Remove the TCP protocol implementation.

Remove the unused DirectTcpReplicationClientFactory class.
Require redis be enabled for workers.
2023-03-15 14:31:26 -04:00 · 2023-03-15 14:31:26 -04:00 · 2023-03-15 14:31:26 -04:00 · 2023-03-15 08:07:20 -04:00 · 2023-03-15 09:25:58 +00:00 · 2023-03-14 17:32:46 +00:00
68 changed files with 1136 additions and 1302 deletions
@@ -4,13 +4,15 @@ name: Build release artifacts

 on:
  # we build on PRs and develop to (hopefully) get early warning
-  # of things breaking (but only build one set of debs)
+  # of things breaking (but only build one set of debs). PRs skip
+  # building wheels on macOS & ARM.
  pull_request:
  push:
    branches: ["develop", "release-*"]

    # we do the full build on tags.
    tags: ["v*"]
+  merge_group:
  workflow_dispatch:

 concurrency:
@@ -4,6 +4,7 @@ on:
  push:
    branches: ["develop", "release-*"]
  pull_request:
+  merge_group:
  workflow_dispatch:

 concurrency:
@@ -323,18 +323,18 @@ checksum = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"

 [[package]]
 name = "serde"
-version = "1.0.152"
+version = "1.0.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bb7d1f0d3021d347a83e556fc4683dea2ea09d87bccdf88ff5c12545d89d5efb"
+checksum = "71f2b4817415c6d4210bfe1c7bfcf4801b2d904cb4d0e1a8fdb651013c9e86b8"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.152"
+version = "1.0.155"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "af487d118eecd09402d70a5d72551860e788df87b464af30e5ea6a38c75c541e"
+checksum = "d071a94a3fac4aff69d023a7f411e33f40f3483f8c5190b1953822b6b76d7630"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -0,0 +1 @@
+Add additional functionality to declaring worker types when starting Complement in worker mode.
@@ -0,0 +1 @@
+Stabilise support for [MSC3966](https://github.com/matrix-org/matrix-spec-proposals/pull/3966): `event_property_contains` push condition.
@@ -0,0 +1 @@
+Implement [MSC3873](https://github.com/matrix-org/matrix-spec-proposals/pull/3873) to fix a long-standing bug where properties with dots were handled ambiguously in push rules.
@@ -0,0 +1 @@
+Improve performance of creating and authenticating events.
@@ -0,0 +1 @@
+Make the `HttpTransactionCache` use the `Requester` in addition of the just the `Request` to build the transaction key.
@@ -0,0 +1 @@
+Improve log lines when purging rooms.
@@ -0,0 +1 @@
+Add a missing endpoint to the workers documentation.
@@ -0,0 +1 @@
+Add topic and name events to group of events that are batch persisted when creating a room.
@@ -0,0 +1 @@
+Improve type hints.
@@ -0,0 +1 @@
+Improve type hints.
@@ -0,0 +1 @@
+Faster joins: Fix a bug introduced in Synapse 1.66 where spurious "Failed to find memberships ..." errors would be logged.
@@ -0,0 +1 @@
+Improve type hints.
@@ -0,0 +1 @@
+Ensure the Dockerfile builds on platforms that don't have a `cryptography` wheel.
@@ -0,0 +1 @@
+Configure GitHub Actions for merge queues.
@@ -0,0 +1 @@
+Add schema comments about the `destinations` and `destination_rooms` tables.
@@ -0,0 +1 @@
+Bump hiredis from 2.2.1 to 2.2.2.
@@ -0,0 +1 @@
+Bump serde from 1.0.152 to 1.0.155.
@@ -0,0 +1 @@
+Bump pysaml2 from 7.2.1 to 7.3.1.
@@ -0,0 +1 @@
+Bump msgpack from 1.0.4 to 1.0.5.
@@ -0,0 +1 @@
+Bump gitpython from 3.1.30 to 3.1.31.
@@ -0,0 +1 @@
+Bump cryptography from 39.0.1 to 39.0.2.
@@ -0,0 +1 @@
+Skip processing of auto-join room behaviour if there are not auto-join rooms configured.
@@ -0,0 +1 @@
+Remove unused store method `_set_destination_retry_timings_emulated`.
@@ -37,9 +37,24 @@ RUN \
  --mount=type=cache,target=/var/cache/apt,sharing=locked \
  --mount=type=cache,target=/var/lib/apt,sharing=locked \
  apt-get update -qq && apt-get install -yqq \
-  build-essential git libffi-dev libssl-dev \
+  build-essential curl git libffi-dev libssl-dev \
  && rm -rf /var/lib/apt/lists/*

+# Install rust and ensure its in the PATH.
+# (Rust may be needed to compile `cryptography`---which is one of poetry's
+# dependencies---on platforms that don't have a `cryptography` wheel.
+ENV RUSTUP_HOME=/rust
+ENV CARGO_HOME=/cargo
+ENV PATH=/cargo/bin:/rust/bin:$PATH
+RUN mkdir /rust /cargo
+
+RUN curl -sSf https://sh.rustup.rs | sh -s -- -y --no-modify-path --default-toolchain stable --profile minimal
+
+# arm64 builds consume a lot of memory if `CARGO_NET_GIT_FETCH_WITH_CLI` is not
+# set to true, so we expose it as a build-arg.
+ARG CARGO_NET_GIT_FETCH_WITH_CLI=false
+ENV CARGO_NET_GIT_FETCH_WITH_CLI=$CARGO_NET_GIT_FETCH_WITH_CLI
+
 # We install poetry in its own build stage to avoid its dependencies conflicting with
 # synapse's dependencies.
 RUN --mount=type=cache,target=/root/.cache/pip \
@@ -51,8 +51,7 @@ if [[ -n "$SYNAPSE_COMPLEMENT_USE_WORKERS" ]]; then
  # -z True if the length of string is zero.
  if [[ -z "$SYNAPSE_WORKER_TYPES" ]]; then
    export SYNAPSE_WORKER_TYPES="\
-      event_persister, \
-      event_persister, \
+      event_persister:2, \
      background_worker, \
      frontend_proxy, \
      event_creator, \
@@ -64,7 +63,8 @@ if [[ -n "$SYNAPSE_COMPLEMENT_USE_WORKERS" ]]; then
      synchrotron, \
      client_reader, \
      appservice, \
-      pusher"
+      pusher, \
+      stream_writers=account_data+presence+receipts+to_device+typing"

  fi
  log "Workers requested: $SYNAPSE_WORKER_TYPES"
@@ -19,8 +19,15 @@
 # The environment variables it reads are:
 #   * SYNAPSE_SERVER_NAME: The desired server_name of the homeserver.
 #   * SYNAPSE_REPORT_STATS: Whether to report stats.
-#   * SYNAPSE_WORKER_TYPES: A comma separated list of worker names as specified in WORKER_CONFIG
-#         below. Leave empty for no workers.
+#   * SYNAPSE_WORKER_TYPES: A comma separated list of worker names as specified in WORKERS_CONFIG
+#         below. Leave empty for no workers. Add a ':' and a number at the end to
+#         multiply that worker. Append multiple worker types with '+' to merge the
+#         worker types into a single worker. Add a name and a '=' to the front of a
+#         worker type to give this instance a name in logs and nginx.
+#         Examples:
+#         SYNAPSE_WORKER_TYPES='event_persister, federation_sender, client_reader'
+#         SYNAPSE_WORKER_TYPES='event_persister:2, federation_sender:2, client_reader'
+#         SYNAPSE_WORKER_TYPES='stream_writers=account_data+presence+typing'
 #   * SYNAPSE_AS_REGISTRATION_DIR: If specified, a directory in which .yaml and .yml files
 #         will be treated as Application Service registration files.
 #   * SYNAPSE_TLS_CERT: Path to a TLS certificate in PEM format.
@@ -40,16 +47,33 @@

 import os
 import platform
+import re
 import subprocess
 import sys
+from collections import defaultdict
+from itertools import chain
 from pathlib import Path
-from typing import Any, Dict, List, Mapping, MutableMapping, NoReturn, Optional, Set
+from typing import (
+    Any,
+    Dict,
+    List,
+    Mapping,
+    MutableMapping,
+    NoReturn,
+    Optional,
+    Set,
+    SupportsIndex,
+)

 import yaml
 from jinja2 import Environment, FileSystemLoader

 MAIN_PROCESS_HTTP_LISTENER_PORT = 8080

+# A simple name used as a placeholder in the WORKERS_CONFIG below. This will be replaced
+# during processing with the name of the worker.
+WORKER_PLACEHOLDER_NAME = "placeholder_name"
+
 # Workers with exposed endpoints needs either "client", "federation", or "media" listener_resources
 # Watching /_matrix/client needs a "client" listener
 # Watching /_matrix/federation needs a "federation" listener
@@ -70,11 +94,13 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "endpoint_patterns": [
            "^/_matrix/client/(api/v1|r0|v3|unstable)/user_directory/search$"
        ],
-        "shared_extra_conf": {"update_user_directory_from_worker": "user_dir1"},
+        "shared_extra_conf": {
+            "update_user_directory_from_worker": WORKER_PLACEHOLDER_NAME
+        },
        "worker_extra_conf": "",
    },
    "media_repository": {
-        "app": "synapse.app.media_repository",
+        "app": "synapse.app.generic_worker",
        "listener_resources": ["media"],
        "endpoint_patterns": [
            "^/_matrix/media/",
@@ -87,7 +113,7 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        # The first configured media worker will run the media background jobs
        "shared_extra_conf": {
            "enable_media_repo": False,
-            "media_instance_running_background_jobs": "media_repository1",
+            "media_instance_running_background_jobs": WORKER_PLACEHOLDER_NAME,
        },
        "worker_extra_conf": "enable_media_repo: true",
    },
@@ -95,7 +121,9 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "app": "synapse.app.generic_worker",
        "listener_resources": [],
        "endpoint_patterns": [],
-        "shared_extra_conf": {"notify_appservices_from_worker": "appservice1"},
+        "shared_extra_conf": {
+            "notify_appservices_from_worker": WORKER_PLACEHOLDER_NAME
+        },
        "worker_extra_conf": "",
    },
    "federation_sender": {
@@ -192,9 +220,9 @@ WORKERS_CONFIG: Dict[str, Dict[str, Any]] = {
        "app": "synapse.app.generic_worker",
        "listener_resources": [],
        "endpoint_patterns": [],
-        # This worker cannot be sharded. Therefore there should only ever be one background
-        # worker, and it should be named background_worker1
-        "shared_extra_conf": {"run_background_tasks_on": "background_worker1"},
+        # This worker cannot be sharded. Therefore, there should only ever be one
+        # background worker. This is enforced for the safety of your database.
+        "shared_extra_conf": {"run_background_tasks_on": WORKER_PLACEHOLDER_NAME},
        "worker_extra_conf": "",
    },
    "event_creator": {
@@ -275,7 +303,7 @@ NGINX_LOCATION_CONFIG_BLOCK = """
 """

 NGINX_UPSTREAM_CONFIG_BLOCK = """
-upstream {upstream_worker_type} {{
+upstream {upstream_worker_base_name} {{
 {body}
 }}
 """
@@ -326,7 +354,7 @@ def convert(src: str, dst: str, **template_vars: object) -> None:

 def add_worker_roles_to_shared_config(
    shared_config: dict,
-    worker_type: str,
+    worker_types_set: Set[str],
    worker_name: str,
    worker_port: int,
 ) -> None:
@@ -334,22 +362,36 @@ def add_worker_roles_to_shared_config(
    append appropriate worker information to it for the current worker_type instance.

    Args:
-        shared_config: The config dict that all worker instances share (after being converted to YAML)
-        worker_type: The type of worker (one of those defined in WORKERS_CONFIG).
+        shared_config: The config dict that all worker instances share (after being
+            converted to YAML)
+        worker_types_set: The type of worker (one of those defined in WORKERS_CONFIG).
+            This list can be a single worker type or multiple.
        worker_name: The name of the worker instance.
        worker_port: The HTTP replication port that the worker instance is listening on.
    """
-    # The instance_map config field marks the workers that write to various replication streams
+    # The instance_map config field marks the workers that write to various replication
+    # streams
    instance_map = shared_config.setdefault("instance_map", {})

-    # Worker-type specific sharding config
-    if worker_type == "pusher":
+    # This is a list of the stream_writers that there can be only one of. Events can be
+    # sharded, and therefore doesn't belong here.
+    singular_stream_writers = [
+        "account_data",
+        "presence",
+        "receipts",
+        "to_device",
+        "typing",
+    ]
+
+    # Worker-type specific sharding config. Now a single worker can fulfill multiple
+    # roles, check each.
+    if "pusher" in worker_types_set:
        shared_config.setdefault("pusher_instances", []).append(worker_name)

-    elif worker_type == "federation_sender":
+    if "federation_sender" in worker_types_set:
        shared_config.setdefault("federation_sender_instances", []).append(worker_name)

-    elif worker_type == "event_persister":
+    if "event_persister" in worker_types_set:
        # Event persisters write to the events stream, so we need to update
        # the list of event stream writers
        shared_config.setdefault("stream_writers", {}).setdefault("events", []).append(
@@ -362,19 +404,154 @@ def add_worker_roles_to_shared_config(
            "port": worker_port,
        }

-    elif worker_type in ["account_data", "presence", "receipts", "to_device", "typing"]:
-        # Update the list of stream writers
-        # It's convenient that the name of the worker type is the same as the stream to write
-        shared_config.setdefault("stream_writers", {}).setdefault(
-            worker_type, []
-        ).append(worker_name)
+    # Update the list of stream writers. It's convenient that the name of the worker
+    # type is the same as the stream to write. Iterate over the whole list in case there
+    # is more than one.
+    for worker in worker_types_set:
+        if worker in singular_stream_writers:
+            shared_config.setdefault("stream_writers", {}).setdefault(
+                worker, []
+            ).append(worker_name)

-        # Map of stream writer instance names to host/ports combos
-        # For now, all stream writers need http replication ports
-        instance_map[worker_name] = {
-            "host": "localhost",
-            "port": worker_port,
-        }
+            # Map of stream writer instance names to host/ports combos
+            # For now, all stream writers need http replication ports
+            instance_map[worker_name] = {
+                "host": "localhost",
+                "port": worker_port,
+            }
+
+
+def merge_worker_template_configs(
+    existing_dict: Dict[str, Any] | None,
+    to_be_merged_dict: Dict[str, Any],
+) -> Dict[str, Any]:
+    """When given an existing dict of worker template configuration consisting with both
+        dicts and lists, merge new template data from WORKERS_CONFIG(or create) and
+        return new dict.
+
+    Args:
+        existing_dict: Either an existing worker template or a fresh blank one.
+        to_be_merged_dict: The template from WORKERS_CONFIGS to be merged into
+            existing_dict.
+    Returns: The newly merged together dict values.
+    """
+    new_dict: Dict[str, Any] = {}
+    if not existing_dict:
+        # It doesn't exist yet, just use the new dict(but take a copy not a reference)
+        new_dict = to_be_merged_dict.copy()
+    else:
+        for i in to_be_merged_dict.keys():
+            if (i == "endpoint_patterns") or (i == "listener_resources"):
+                # merge the two lists, remove duplicates
+                new_dict[i] = list(set(existing_dict[i] + to_be_merged_dict[i]))
+            elif i == "shared_extra_conf":
+                # merge dictionary's, the worker name will be replaced later
+                new_dict[i] = {**existing_dict[i], **to_be_merged_dict[i]}
+            elif i == "worker_extra_conf":
+                # There is only one worker type that has a 'worker_extra_conf' and it is
+                # the media_repo. Since duplicate worker types on the same worker don't
+                # work, this is fine.
+                new_dict[i] = existing_dict[i] + to_be_merged_dict[i]
+            else:
+                # Everything else should be identical, like "app", which only works
+                # because all apps are now generic_workers.
+                new_dict[i] = to_be_merged_dict[i]
+    return new_dict
+
+
+def insert_worker_name_for_worker_config(
+    existing_dict: Dict[str, Any], worker_name: str
+) -> Dict[str, Any]:
+    """Insert a given worker name into the worker's configuration dict.
+
+    Args:
+        existing_dict: The worker_config dict that is imported into shared_config.
+        worker_name: The name of the worker to insert.
+    Returns: Copy of the dict with newly inserted worker name
+    """
+    dict_to_edit = existing_dict.copy()
+    for k, v in dict_to_edit["shared_extra_conf"].items():
+        # Only proceed if it's the placeholder name string
+        if v == WORKER_PLACEHOLDER_NAME:
+            dict_to_edit["shared_extra_conf"][k] = worker_name
+    return dict_to_edit
+
+
+def apply_requested_multiplier_for_worker(worker_types: List[str]) -> List[str]:
+    """
+    Apply multiplier(if found) by returning a new expanded list with some basic error
+    checking.
+
+    Args:
+        worker_types: The unprocessed List of requested workers
+    Returns:
+        A new list with all requested workers expanded.
+    """
+    # Checking performed:
+    # 1. if worker:2 or more is declared, it will create additional workers up to number
+    # 2. if worker:1, it will create a single copy of this worker as if no number was
+    #   given
+    # 3. if worker:0 is declared, this worker will be ignored. This is to allow for
+    #   scripting and automated expansion and is intended behaviour.
+    # 4. if worker:NaN or is a negative number, it will error and log it.
+    new_worker_types = []
+    for worker_type in worker_types:
+        if ":" in worker_type:
+            worker_type_components = split_and_strip_string(worker_type, ":", 1)
+            worker_count = 0
+            # Should only be 2 components, a type of worker(s) and an integer as a
+            # string. Cast the number as an int then it can be used as a counter.
+            try:
+                worker_count = int(worker_type_components[1])
+            except ValueError:
+                error(
+                    f"Bad number in worker count for '{worker_type}': "
+                    f"'{worker_type_components[1]}' is not an integer"
+                )
+
+            # As long as there are more than 0, we add one to the list to make below.
+            for _ in range(worker_count):
+                new_worker_types.append(worker_type_components[0])
+
+        else:
+            # If it's not a real worker_type, it will error out later.
+            new_worker_types.append(worker_type)
+    return new_worker_types
+
+
+def is_sharding_allowed_for_worker_type(worker_type: str) -> bool:
+    """Helper to check to make sure worker types that cannot have multiples do not.
+
+    Args:
+        worker_type: The type of worker to check against.
+    Returns: True if allowed, False if not
+    """
+    return worker_type not in [
+        "background_worker",
+        "account_data",
+        "presence",
+        "receipts",
+        "typing",
+        "to_device",
+    ]
+
+
+def split_and_strip_string(
+    given_string: str, split_char: str, max_split: SupportsIndex = -1
+) -> List[str]:
+    """
+    Helper to split a string on split_char and strip whitespace from each end of each
+        element.
+    Args:
+        given_string: The string to split
+        split_char: The character to split the string on
+        max_split: kwarg for split() to limit how many times the split() happens
+    Returns:
+        A List of strings
+    """
+    # Removes whitespace from ends of result strings before adding to list. Allow for
+    # overriding 'maxsplit' kwarg, default being -1 to signify no maximum.
+    return [x.strip() for x in given_string.split(split_char, maxsplit=max_split)]


 def generate_base_homeserver_config() -> None:
@@ -389,29 +566,153 @@ def generate_base_homeserver_config() -> None:
    subprocess.run(["/usr/local/bin/python", "/start.py", "migrate_config"], check=True)


+def parse_worker_types(
+    requested_worker_types: List[str],
+) -> Dict[str, Set[str]]:
+    """Read the desired list of requested workers and prepare the data for use in
+        generating worker config files while also checking for potential gotchas.
+
+    Args:
+        requested_worker_types: The list formed from the split environment variable
+            containing the unprocessed requests for workers.
+
+    Returns: A dict of worker names to set of worker types. Format:
+        {'worker_name':
+            {'worker_type', 'worker_type2'}
+        }
+    """
+    # A counter of worker_base_name -> int. Used for determining the name for a given
+    # worker when generating its config file, as each worker's name is just
+    # worker_base_name followed by instance number
+    worker_base_name_counter: Dict[str, int] = defaultdict(int)
+
+    # Similar to above, but more finely grained. This is used to determine we don't have
+    # more than a single worker for cases where multiples would be bad(e.g. presence).
+    worker_type_shard_counter: Dict[str, int] = defaultdict(int)
+
+    # The final result of all this processing
+    dict_to_return: Dict[str, Set[str]] = {}
+
+    # Handle any multipliers requested for given workers.
+    multiple_processed_worker_types = apply_requested_multiplier_for_worker(
+        requested_worker_types
+    )
+
+    # Process each worker_type_string
+    # Examples of expected formats:
+    #  - requested_name=type1+type2+type3
+    #  - synchrotron
+    #  - event_creator+event_persister
+    for worker_type_string in multiple_processed_worker_types:
+        # First, if a name is requested, use that — otherwise generate one.
+        worker_base_name: str = ""
+        if "=" in worker_type_string:
+            # Split on "=", remove extra whitespace from ends then make list
+            worker_type_split = split_and_strip_string(worker_type_string, "=")
+            if len(worker_type_split) > 2:
+                error(
+                    "There should only be one '=' in the worker type string. "
+                    f"Please fix: {worker_type_string}"
+                )
+
+            # Assign the name
+            worker_base_name = worker_type_split[0]
+
+            if not re.match(r"^[a-zA-Z0-9_+-]*[a-zA-Z_+-]$", worker_base_name):
+                # Apply a fairly narrow regex to the worker names. Some characters
+                # aren't safe for use in file paths or nginx configurations.
+                # Don't allow to end with a number because we'll add a number
+                # ourselves in a moment.
+                error(
+                    "Invalid worker name; please choose a name consisting of "
+                    "alphanumeric letters, _ + -, but not ending with a digit: "
+                    f"{worker_base_name!r}"
+                )
+
+            # Continue processing the remainder of the worker_type string
+            # with the name override removed.
+            worker_type_string = worker_type_split[1]
+
+        # Split the worker_type_string on "+", remove whitespace from ends then make
+        # the list a set so it's deduplicated.
+        worker_types_set: Set[str] = set(
+            split_and_strip_string(worker_type_string, "+")
+        )
+
+        if not worker_base_name:
+            # No base name specified: generate one deterministically from set of
+            # types
+            worker_base_name = "+".join(sorted(worker_types_set))
+
+        # At this point, we have:
+        #   worker_base_name which is the name for the worker, without counter.
+        #   worker_types_set which is the set of worker types for this worker.
+
+        # Validate worker_type and make sure we don't allow sharding for a worker type
+        # that doesn't support it. Will error and stop if it is a problem,
+        # e.g. 'background_worker'.
+        for worker_type in worker_types_set:
+            # Verify this is a real defined worker type. If it's not, stop everything so
+            # it can be fixed.
+            if worker_type not in WORKERS_CONFIG:
+                error(
+                    f"{worker_type} is an unknown worker type! Was found in "
+                    f"'{worker_type_string}'. Please fix!"
+                )
+
+            if worker_type in worker_type_shard_counter:
+                if not is_sharding_allowed_for_worker_type(worker_type):
+                    error(
+                        f"There can be only a single worker with {worker_type} "
+                        "type. Please recount and remove."
+                    )
+            # Not in shard counter, must not have seen it yet, add it.
+            worker_type_shard_counter[worker_type] += 1
+
+        # Generate the number for the worker using incrementing counter
+        worker_base_name_counter[worker_base_name] += 1
+        worker_number = worker_base_name_counter[worker_base_name]
+        worker_name = f"{worker_base_name}{worker_number}"
+
+        if worker_number > 1:
+            # If this isn't the first worker, check that we don't have a confusing
+            # mixture of worker types with the same base name.
+            first_worker_with_base_name = dict_to_return[f"{worker_base_name}1"]
+            if first_worker_with_base_name != worker_types_set:
+                error(
+                    f"Can not use worker_name: '{worker_name}' for worker_type(s): "
+                    f"{worker_types_set!r}. It is already in use by "
+                    f"worker_type(s): {first_worker_with_base_name!r}"
+                )
+
+        dict_to_return[worker_name] = worker_types_set
+
+    return dict_to_return
+
+
 def generate_worker_files(
-    environ: Mapping[str, str], config_path: str, data_dir: str
+    environ: Mapping[str, str],
+    config_path: str,
+    data_dir: str,
+    requested_worker_types: Dict[str, Set[str]],
 ) -> None:
-    """Read the desired list of workers from environment variables and generate
-    shared homeserver, nginx and supervisord configs.
+    """Read the desired workers(if any) that is passed in and generate shared
+        homeserver, nginx and supervisord configs.

    Args:
        environ: os.environ instance.
        config_path: The location of the generated Synapse main worker config file.
        data_dir: The location of the synapse data directory. Where log and
            user-facing config files live.
+        requested_worker_types: A Dict containing requested workers in the format of
+            {'worker_name1': {'worker_type', ...}}
    """
    # Note that yaml cares about indentation, so care should be taken to insert lines
    # into files at the correct indentation below.

-    # shared_config is the contents of a Synapse config file that will be shared amongst
-    # the main Synapse process as well as all workers.
-    # It is intended mainly for disabling functionality when certain workers are spun up,
-    # and adding a replication listener.
-
-    # First read the original config file and extract the listeners block. Then we'll add
-    # another listener for replication. Later we'll write out the result to the shared
-    # config file.
+    # First read the original config file and extract the listeners block. Then we'll
+    # add another listener for replication. Later we'll write out the result to the
+    # shared config file.
    listeners = [
        {
            "port": 9093,
@@ -427,9 +728,9 @@ def generate_worker_files(
            listeners += original_listeners

    # The shared homeserver config. The contents of which will be inserted into the
-    # base shared worker jinja2 template.
-    #
-    # This config file will be passed to all workers, included Synapse's main process.
+    # base shared worker jinja2 template. This config file will be passed to all
+    # workers, included Synapse's main process. It is intended mainly for disabling
+    # functionality when certain workers are spun up, and adding a replication listener.
    shared_config: Dict[str, Any] = {"listeners": listeners}

    # List of dicts that describe workers.
@@ -437,31 +738,20 @@ def generate_worker_files(
    # program blocks.
    worker_descriptors: List[Dict[str, Any]] = []

-    # Upstreams for load-balancing purposes. This dict takes the form of a worker type to the
-    # ports of each worker. For example:
+    # Upstreams for load-balancing purposes. This dict takes the form of the worker
+    # type to the ports of each worker. For example:
    # {
    #   worker_type: {1234, 1235, ...}}
    # }
    # and will be used to construct 'upstream' nginx directives.
    nginx_upstreams: Dict[str, Set[int]] = {}

-    # A map of: {"endpoint": "upstream"}, where "upstream" is a str representing what will be
-    # placed after the proxy_pass directive. The main benefit to representing this data as a
-    # dict over a str is that we can easily deduplicate endpoints across multiple instances
-    # of the same worker.
-    #
-    # An nginx site config that will be amended to depending on the workers that are
-    # spun up. To be placed in /etc/nginx/conf.d.
-    nginx_locations = {}
-
-    # Read the desired worker configuration from the environment
-    worker_types_env = environ.get("SYNAPSE_WORKER_TYPES", "").strip()
-    if not worker_types_env:
-        # No workers, just the main process
-        worker_types = []
-    else:
-        # Split type names by comma, ignoring whitespace.
-        worker_types = [x.strip() for x in worker_types_env.split(",")]
+    # A map of: {"endpoint": "upstream"}, where "upstream" is a str representing what
+    # will be placed after the proxy_pass directive. The main benefit to representing
+    # this data as a dict over a str is that we can easily deduplicate endpoints
+    # across multiple instances of the same worker. The final rendering will be combined
+    # with nginx_upstreams and placed in /etc/nginx/conf.d.
+    nginx_locations: Dict[str, str] = {}

    # Create the worker configuration directory if it doesn't already exist
    os.makedirs("/conf/workers", exist_ok=True)
@@ -469,66 +759,57 @@ def generate_worker_files(
    # Start worker ports from this arbitrary port
    worker_port = 18009

-    # A counter of worker_type -> int. Used for determining the name for a given
-    # worker type when generating its config file, as each worker's name is just
-    # worker_type + instance #
-    worker_type_counter: Dict[str, int] = {}
-
    # A list of internal endpoints to healthcheck, starting with the main process
    # which exists even if no workers do.
    healthcheck_urls = ["http://localhost:8080/health"]

-    # For each worker type specified by the user, create config values
-    for worker_type in worker_types:
-        worker_config = WORKERS_CONFIG.get(worker_type)
-        if worker_config:
-            worker_config = worker_config.copy()
-        else:
-            error(worker_type + " is an unknown worker type! Please fix!")
+    # Get the set of all worker types that we have configured
+    all_worker_types_in_use = set(chain(*requested_worker_types.values()))
+    # Map locations to upstreams (corresponding to worker types) in Nginx
+    # but only if we use the appropriate worker type
+    for worker_type in all_worker_types_in_use:
+        for endpoint_pattern in WORKERS_CONFIG[worker_type]["endpoint_patterns"]:
+            nginx_locations[endpoint_pattern] = f"http://{worker_type}"

-        new_worker_count = worker_type_counter.setdefault(worker_type, 0) + 1
-        worker_type_counter[worker_type] = new_worker_count
+    # For each worker type specified by the user, create config values and write it's
+    # yaml config file
+    for worker_name, worker_types_set in requested_worker_types.items():
+        # The collected and processed data will live here.
+        worker_config: Dict[str, Any] = {}
+
+        # Merge all worker config templates for this worker into a single config
+        for worker_type in worker_types_set:
+            copy_of_template_config = WORKERS_CONFIG[worker_type].copy()
+
+            # Merge worker type template configuration data. It's a combination of lists
+            # and dicts, so use this helper.
+            worker_config = merge_worker_template_configs(
+                worker_config, copy_of_template_config
+            )
+
+        # Replace placeholder names in the config template with the actual worker name.
+        worker_config = insert_worker_name_for_worker_config(worker_config, worker_name)

-        # Name workers by their type concatenated with an incrementing number
-        # e.g. federation_reader1
-        worker_name = worker_type + str(new_worker_count)
        worker_config.update(
            {"name": worker_name, "port": str(worker_port), "config_path": config_path}
        )

-        # Update the shared config with any worker-type specific options
-        shared_config.update(worker_config["shared_extra_conf"])
+        # Update the shared config with any worker_type specific options. The first of a
+        # given worker_type needs to stay assigned and not be replaced.
+        worker_config["shared_extra_conf"].update(shared_config)
+        shared_config = worker_config["shared_extra_conf"]

        healthcheck_urls.append("http://localhost:%d/health" % (worker_port,))

-        # Check if more than one instance of this worker type has been specified
-        worker_type_total_count = worker_types.count(worker_type)
-
        # Update the shared config with sharding-related options if necessary
        add_worker_roles_to_shared_config(
-            shared_config, worker_type, worker_name, worker_port
+            shared_config, worker_types_set, worker_name, worker_port
        )

        # Enable the worker in supervisord
        worker_descriptors.append(worker_config)

-        # Add nginx location blocks for this worker's endpoints (if any are defined)
-        for pattern in worker_config["endpoint_patterns"]:
-            # Determine whether we need to load-balance this worker
-            if worker_type_total_count > 1:
-                # Create or add to a load-balanced upstream for this worker
-                nginx_upstreams.setdefault(worker_type, set()).add(worker_port)
-
-                # Upstreams are named after the worker_type
-                upstream = "http://" + worker_type
-            else:
-                upstream = "http://localhost:%d" % (worker_port,)
-
-            # Note that this endpoint should proxy to this upstream
-            nginx_locations[pattern] = upstream
-
        # Write out the worker's logging config file
-
        log_config_filepath = generate_worker_log_config(environ, worker_name, data_dir)

        # Then a worker config file
@@ -539,6 +820,10 @@ def generate_worker_files(
            worker_log_config_filepath=log_config_filepath,
        )

+        # Save this worker's port number to the correct nginx upstreams
+        for worker_type in worker_types_set:
+            nginx_upstreams.setdefault(worker_type, set()).add(worker_port)
+
        worker_port += 1

    # Build the nginx location config blocks
@@ -551,15 +836,14 @@ def generate_worker_files(

    # Determine the load-balancing upstreams to configure
    nginx_upstream_config = ""
-
-    for upstream_worker_type, upstream_worker_ports in nginx_upstreams.items():
+    for upstream_worker_base_name, upstream_worker_ports in nginx_upstreams.items():
        body = ""
        for port in upstream_worker_ports:
-            body += "    server localhost:%d;\n" % (port,)
+            body += f"    server localhost:{port};\n"

        # Add to the list of configured upstreams
        nginx_upstream_config += NGINX_UPSTREAM_CONFIG_BLOCK.format(
-            upstream_worker_type=upstream_worker_type,
+            upstream_worker_base_name=upstream_worker_base_name,
            body=body,
        )

@@ -580,7 +864,7 @@ def generate_worker_files(
            if reg_path.suffix.lower() in (".yaml", ".yml")
        ]

-    workers_in_use = len(worker_types) > 0
+    workers_in_use = len(requested_worker_types) > 0

    # Shared homeserver config
    convert(
@@ -678,13 +962,26 @@ def main(args: List[str], environ: MutableMapping[str, str]) -> None:
        generate_base_homeserver_config()
    else:
        log("Base homeserver config exists—not regenerating")
-    # This script may be run multiple times (mostly by Complement, see note at top of file).
-    # Don't re-configure workers in this instance.
+    # This script may be run multiple times (mostly by Complement, see note at top of
+    # file). Don't re-configure workers in this instance.
    mark_filepath = "/conf/workers_have_been_configured"
    if not os.path.exists(mark_filepath):
+        # Collect and validate worker_type requests
+        # Read the desired worker configuration from the environment
+        worker_types_env = environ.get("SYNAPSE_WORKER_TYPES", "").strip()
+        # Only process worker_types if they exist
+        if not worker_types_env:
+            # No workers, just the main process
+            worker_types = []
+            requested_worker_types: Dict[str, Any] = {}
+        else:
+            # Split type names by comma, ignoring whitespace.
+            worker_types = split_and_strip_string(worker_types_env, ",")
+            requested_worker_types = parse_worker_types(worker_types)
+
        # Always regenerate all other config files
        log("Generating worker config files")
-        generate_worker_files(environ, config_path, data_dir)
+        generate_worker_files(environ, config_path, data_dir, requested_worker_types)

        # Mark workers as being configured
        with open(mark_filepath, "w") as f:
@@ -231,6 +231,7 @@ information.
    ^/_matrix/client/(api/v1|r0|v3|unstable)/rooms/.*/event/
    ^/_matrix/client/(api/v1|r0|v3|unstable)/joined_rooms$
    ^/_matrix/client/v1/rooms/.*/timestamp_to_event$
+    ^/_matrix/client/(api/v1|r0|v3|unstable/.*)/rooms/.*/aliases
    ^/_matrix/client/(api/v1|r0|v3|unstable)/search$
    ^/_matrix/client/(r0|v3|unstable)/user/.*/filter(/|$)

@@ -48,9 +48,6 @@ warn_unused_ignores = False
 [mypy-synapse.util.caches.treecache]
 disallow_untyped_defs = False

-[mypy-synapse.storage.database]
-disallow_untyped_defs = False
-
 [mypy-tests.util.caches.test_descriptors]
 disallow_untyped_defs = False

@@ -74,11 +71,6 @@ ignore_missing_imports = True
 [mypy-msgpack]
 ignore_missing_imports = True

-# Note: WIP stubs available at
-# https://github.com/microsoft/python-type-stubs/tree/64934207f523ad6b611e6cfe039d85d7175d7d0d/netaddr
-[mypy-netaddr]
-ignore_missing_imports = True
-
 [mypy-parameterized.*]
 ignore_missing_imports = True

@@ -352,35 +352,35 @@ files = [

 [[package]]
 name = "cryptography"
-version = "39.0.1"
+version = "39.0.2"
 description = "cryptography is a package which provides cryptographic recipes and primitives to Python developers."
 category = "main"
 optional = false
 python-versions = ">=3.6"
 files = [
-    {file = "cryptography-39.0.1-cp36-abi3-macosx_10_12_universal2.whl", hash = "sha256:6687ef6d0a6497e2b58e7c5b852b53f62142cfa7cd1555795758934da363a965"},
-    {file = "cryptography-39.0.1-cp36-abi3-macosx_10_12_x86_64.whl", hash = "sha256:706843b48f9a3f9b9911979761c91541e3d90db1ca905fd63fee540a217698bc"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_24_aarch64.whl", hash = "sha256:5d2d8b87a490bfcd407ed9d49093793d0f75198a35e6eb1a923ce1ee86c62b41"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_17_aarch64.manylinux2014_aarch64.whl", hash = "sha256:83e17b26de248c33f3acffb922748151d71827d6021d98c70e6c1a25ddd78505"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_17_x86_64.manylinux2014_x86_64.whl", hash = "sha256:e124352fd3db36a9d4a21c1aa27fd5d051e621845cb87fb851c08f4f75ce8be6"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_24_x86_64.whl", hash = "sha256:5aa67414fcdfa22cf052e640cb5ddc461924a045cacf325cd164e65312d99502"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_28_aarch64.whl", hash = "sha256:35f7c7d015d474f4011e859e93e789c87d21f6f4880ebdc29896a60403328f1f"},
-    {file = "cryptography-39.0.1-cp36-abi3-manylinux_2_28_x86_64.whl", hash = "sha256:f24077a3b5298a5a06a8e0536e3ea9ec60e4c7ac486755e5fb6e6ea9b3500106"},
-    {file = "cryptography-39.0.1-cp36-abi3-musllinux_1_1_aarch64.whl", hash = "sha256:f0c64d1bd842ca2633e74a1a28033d139368ad959872533b1bab8c80e8240a0c"},
-    {file = "cryptography-39.0.1-cp36-abi3-musllinux_1_1_x86_64.whl", hash = "sha256:0f8da300b5c8af9f98111ffd512910bc792b4c77392a9523624680f7956a99d4"},
-    {file = "cryptography-39.0.1-cp36-abi3-win32.whl", hash = "sha256:fe913f20024eb2cb2f323e42a64bdf2911bb9738a15dba7d3cce48151034e3a8"},
-    {file = "cryptography-39.0.1-cp36-abi3-win_amd64.whl", hash = "sha256:ced4e447ae29ca194449a3f1ce132ded8fcab06971ef5f618605aacaa612beac"},
-    {file = "cryptography-39.0.1-pp38-pypy38_pp73-macosx_10_12_x86_64.whl", hash = "sha256:807ce09d4434881ca3a7594733669bd834f5b2c6d5c7e36f8c00f691887042ad"},
-    {file = "cryptography-39.0.1-pp38-pypy38_pp73-manylinux_2_28_aarch64.whl", hash = "sha256:c5caeb8188c24888c90b5108a441c106f7faa4c4c075a2bcae438c6e8ca73cef"},
-    {file = "cryptography-39.0.1-pp38-pypy38_pp73-manylinux_2_28_x86_64.whl", hash = "sha256:4789d1e3e257965e960232345002262ede4d094d1a19f4d3b52e48d4d8f3b885"},
-    {file = "cryptography-39.0.1-pp38-pypy38_pp73-win_amd64.whl", hash = "sha256:96f1157a7c08b5b189b16b47bc9db2332269d6680a196341bf30046330d15388"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-macosx_10_12_x86_64.whl", hash = "sha256:e422abdec8b5fa8462aa016786680720d78bdce7a30c652b7fadf83a4ba35336"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-manylinux_2_17_aarch64.manylinux2014_aarch64.manylinux_2_24_aarch64.whl", hash = "sha256:b0afd054cd42f3d213bf82c629efb1ee5f22eba35bf0eec88ea9ea7304f511a2"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-manylinux_2_24_x86_64.whl", hash = "sha256:6f8ba7f0328b79f08bdacc3e4e66fb4d7aab0c3584e0bd41328dce5262e26b2e"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-manylinux_2_28_aarch64.whl", hash = "sha256:ef8b72fa70b348724ff1218267e7f7375b8de4e8194d1636ee60510aae104cd0"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-manylinux_2_28_x86_64.whl", hash = "sha256:aec5a6c9864be7df2240c382740fcf3b96928c46604eaa7f3091f58b878c0bb6"},
-    {file = "cryptography-39.0.1-pp39-pypy39_pp73-win_amd64.whl", hash = "sha256:fdd188c8a6ef8769f148f88f859884507b954cc64db6b52f66ef199bb9ad660a"},
-    {file = "cryptography-39.0.1.tar.gz", hash = "sha256:d1f6198ee6d9148405e49887803907fe8962a23e6c6f83ea7d98f1c0de375695"},
+    {file = "cryptography-39.0.2-cp36-abi3-macosx_10_12_universal2.whl", hash = "sha256:2725672bb53bb92dc7b4150d233cd4b8c59615cd8288d495eaa86db00d4e5c06"},
+    {file = "cryptography-39.0.2-cp36-abi3-macosx_10_12_x86_64.whl", hash = "sha256:23df8ca3f24699167daf3e23e51f7ba7334d504af63a94af468f468b975b7dd7"},
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-description = "GitPython is a python library used to interact with Git repositories"
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+    {file = "msgpack-1.0.5-cp39-cp39-win32.whl", hash = "sha256:ac9dd47af78cae935901a9a500104e2dea2e253207c924cc95de149606dc43cc"},
+    {file = "msgpack-1.0.5-cp39-cp39-win_amd64.whl", hash = "sha256:06f5174b5f8ed0ed919da0e62cbd4ffde676a374aba4020034da05fab67b9164"},
+    {file = "msgpack-1.0.5.tar.gz", hash = "sha256:c075544284eadc5cddc70f4757331d99dcbc16b2bbd4849d15f8aae4cf36d31c"},
 ]

 [[package]]
@@ -1777,26 +1788,25 @@ files = [

 [[package]]
 name = "pysaml2"
-version = "7.2.1"
+version = "7.3.1"
 description = "Python implementation of SAML Version 2 Standard"
 category = "main"
 optional = true
-python-versions = "<4,>=3.6"
+python-versions = ">=3.6.2,<4.0.0"
 files = [
-    {file = "pysaml2-7.2.1-py2.py3-none-any.whl", hash = "sha256:2ca155f4eeb1471b247a7b0cc79ccfd5780046d33d0b201e1199a00698dce795"},
-    {file = "pysaml2-7.2.1.tar.gz", hash = "sha256:f40f9576dce9afef156469179277ffeeca36829248be333252af0517a26d0b1f"},
+    {file = "pysaml2-7.3.1-py3-none-any.whl", hash = "sha256:2cc66e7a371d3f5ff9601f0ed93b5276cca816fce82bb38447d5a0651f2f5193"},
+    {file = "pysaml2-7.3.1.tar.gz", hash = "sha256:eab22d187c6dd7707c58b5bb1688f9b8e816427667fc99d77f54399e15cd0a0a"},
 ]

 [package.dependencies]
 cryptography = ">=3.1"
 defusedxml = "*"
+importlib-metadata = {version = ">=1.7.0", markers = "python_version < \"3.8\""}
 importlib-resources = {version = "*", markers = "python_version < \"3.9\""}
-pyOpenSSL = "*"
+pyopenssl = "*"
 python-dateutil = "*"
 pytz = "*"
-requests = ">=1.0.0"
-setuptools = "*"
-six = "*"
+requests = ">=2,<3"
 xmlschema = ">=1.2.1"

 [package.extras]
@@ -2597,6 +2607,18 @@ files = [
    {file = "types_jsonschema-4.17.0.5-py3-none-any.whl", hash = "sha256:79ac8a7763fe728947af90a24168b91621edf7e8425bf3670abd4ea0d4758fba"},
 ]

+[[package]]
+name = "types-netaddr"
+version = "0.8.0.6"
+description = "Typing stubs for netaddr"
+category = "dev"
+optional = false
+python-versions = "*"
+files = [
+    {file = "types-netaddr-0.8.0.6.tar.gz", hash = "sha256:e5048640c2412e7ea2d3eb02c94ae1b50442b2c7a50a7c48e957676139cdf19b"},
+    {file = "types_netaddr-0.8.0.6-py3-none-any.whl", hash = "sha256:d4d40d1ba35430a4e4c929596542cd37e6831f5d08676b33dc84e06e01a840f6"},
+]
+
 [[package]]
 name = "types-opentracing"
 version = "2.4.10.3"
@@ -2990,4 +3012,4 @@ user-search = ["pyicu"]
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.7.1"
-content-hash = "7bcffef7b6e6d4b1113222e2ca152b3798c997872789c8a1ea01238f199d56fe"
+content-hash = "de2c4c8de336593478ce02581a5336afe2544db93ea82f3955b34c3653c29a26"
@@ -321,6 +321,7 @@ mypy-zope = "*"
 types-bleach = ">=4.1.0"
 types-commonmark = ">=0.9.2"
 types-jsonschema = ">=3.2.0"
+types-netaddr = ">=0.8.0.6"
 types-opentracing = ">=2.4.2"
 types-Pillow = ">=8.3.4"
 types-psycopg2 = ">=2.9.9"
@@ -52,7 +52,6 @@ fn bench_match_exact(b: &mut Bencher) {
        true,
        vec![],
        false,
-        false,
    )
    .unwrap();

@@ -98,7 +97,6 @@ fn bench_match_word(b: &mut Bencher) {
        true,
        vec![],
        false,
-        false,
    )
    .unwrap();

@@ -144,7 +142,6 @@ fn bench_match_word_miss(b: &mut Bencher) {
        true,
        vec![],
        false,
-        false,
    )
    .unwrap();

@@ -190,7 +187,6 @@ fn bench_eval_message(b: &mut Bencher) {
        true,
        vec![],
        false,
-        false,
    )
    .unwrap();

@@ -71,7 +71,7 @@ pub const BASE_APPEND_OVERRIDE_RULES: &[PushRule] = &[
        priority_class: 5,
        conditions: Cow::Borrowed(&[Condition::Known(KnownCondition::EventMatch(
            EventMatchCondition {
-                key: Cow::Borrowed("content.m.relates_to.rel_type"),
+                key: Cow::Borrowed("content.m\\.relates_to.rel_type"),
                pattern: Cow::Borrowed("m.replace"),
            },
        ))]),
@@ -146,7 +146,7 @@ pub const BASE_APPEND_OVERRIDE_RULES: &[PushRule] = &[
        priority_class: 5,
        conditions: Cow::Borrowed(&[Condition::Known(
            KnownCondition::ExactEventPropertyContainsType(EventPropertyIsTypeCondition {
-                key: Cow::Borrowed("content.org.matrix.msc3952.mentions.user_ids"),
+                key: Cow::Borrowed("content.org\\.matrix\\.msc3952\\.mentions.user_ids"),
                value_type: Cow::Borrowed(&EventMatchPatternType::UserId),
            }),
        )]),
@@ -167,7 +167,7 @@ pub const BASE_APPEND_OVERRIDE_RULES: &[PushRule] = &[
        priority_class: 5,
        conditions: Cow::Borrowed(&[
            Condition::Known(KnownCondition::EventPropertyIs(EventPropertyIsCondition {
-                key: Cow::Borrowed("content.org.matrix.msc3952.mentions.room"),
+                key: Cow::Borrowed("content.org\\.matrix\\.msc3952\\.mentions.room"),
                value: Cow::Borrowed(&SimpleJsonValue::Bool(true)),
            })),
            Condition::Known(KnownCondition::SenderNotificationPermission {
@@ -96,9 +96,6 @@ pub struct PushRuleEvaluator {
    /// If MSC3931 (room version feature flags) is enabled. Usually controlled by the same
    /// flag as MSC1767 (extensible events core).
    msc3931_enabled: bool,
-
-    /// If MSC3966 (exact_event_property_contains push rule condition) is enabled.
-    msc3966_exact_event_property_contains: bool,
 }

 #[pymethods]
@@ -116,7 +113,6 @@ impl PushRuleEvaluator {
        related_event_match_enabled: bool,
        room_version_feature_flags: Vec<String>,
        msc3931_enabled: bool,
-        msc3966_exact_event_property_contains: bool,
    ) -> Result<Self, Error> {
        let body = match flattened_keys.get("content.body") {
            Some(JsonValue::Value(SimpleJsonValue::Str(s))) => s.clone(),
@@ -134,7 +130,6 @@ impl PushRuleEvaluator {
            related_event_match_enabled,
            room_version_feature_flags,
            msc3931_enabled,
-            msc3966_exact_event_property_contains,
        })
    }

@@ -301,8 +296,8 @@ impl PushRuleEvaluator {
                    Some(Cow::Borrowed(pattern)),
                )?
            }
-            KnownCondition::ExactEventPropertyContains(event_property_is) => self
-                .match_exact_event_property_contains(
+            KnownCondition::EventPropertyContains(event_property_is) => self
+                .match_event_property_contains(
                    event_property_is.key.clone(),
                    event_property_is.value.clone(),
                )?,
@@ -321,7 +316,7 @@ impl PushRuleEvaluator {
                    EventMatchPatternType::UserLocalpart => get_localpart_from_id(user_id)?,
                };

-                self.match_exact_event_property_contains(
+                self.match_event_property_contains(
                    exact_event_match.key.clone(),
                    Cow::Borrowed(&SimpleJsonValue::Str(pattern.to_string())),
                )?
@@ -454,17 +449,12 @@ impl PushRuleEvaluator {
        }
    }

-    /// Evaluates a `exact_event_property_contains` condition. (MSC3966)
-    fn match_exact_event_property_contains(
+    /// Evaluates a `event_property_contains` condition.
+    fn match_event_property_contains(
        &self,
        key: Cow<str>,
        value: Cow<SimpleJsonValue>,
    ) -> Result<bool, Error> {
-        // First check if the feature is enabled.
-        if !self.msc3966_exact_event_property_contains {
-            return Ok(false);
-        }
-
        let haystack = if let Some(JsonValue::Array(haystack)) = self.flattened_keys.get(&*key) {
            haystack
        } else {
@@ -515,7 +505,6 @@ fn push_rule_evaluator() {
        true,
        vec![],
        true,
-        true,
    )
    .unwrap();

@@ -545,7 +534,6 @@ fn test_requires_room_version_supports_condition() {
        false,
        flags,
        true,
-        true,
    )
    .unwrap();

@@ -337,13 +337,9 @@ pub enum KnownCondition {
    // Identical to related_event_match but gives predefined patterns. Cannot be added by users.
    #[serde(skip_deserializing, rename = "im.nheko.msc3664.related_event_match")]
    RelatedEventMatchType(RelatedEventMatchTypeCondition),
-    #[serde(rename = "org.matrix.msc3966.exact_event_property_contains")]
-    ExactEventPropertyContains(EventPropertyIsCondition),
+    EventPropertyContains(EventPropertyIsCondition),
    // Identical to exact_event_property_contains but gives predefined patterns. Cannot be added by users.
-    #[serde(
-        skip_deserializing,
-        rename = "org.matrix.msc3966.exact_event_property_contains"
-    )]
+    #[serde(skip_deserializing, rename = "event_property_contains")]
    ExactEventPropertyContainsType(EventPropertyIsTypeCondition),
    ContainsDisplayName,
    RoomMemberCount {
@@ -65,7 +65,6 @@ class PushRuleEvaluator:
        related_event_match_enabled: bool,
        room_version_feature_flags: Tuple[str, ...],
        msc3931_enabled: bool,
-        msc3966_exact_event_property_contains: bool,
    ): ...
    def run(
        self,
@@ -166,20 +166,9 @@ class ExperimentalConfig(Config):
        # MSC3391: Removing account data.
        self.msc3391_enabled = experimental.get("msc3391_enabled", False)

-        # MSC3873: Disambiguate event_match keys.
-        self.msc3873_escape_event_match_key = experimental.get(
-            "msc3873_escape_event_match_key", False
-        )
-
-        # MSC3966: exact_event_property_contains push rule condition.
-        self.msc3966_exact_event_property_contains = experimental.get(
-            "msc3966_exact_event_property_contains", False
-        )
-
        # MSC3952: Intentional mentions, this depends on MSC3966.
-        self.msc3952_intentional_mentions = (
-            experimental.get("msc3952_intentional_mentions", False)
-            and self.msc3966_exact_event_property_contains
+        self.msc3952_intentional_mentions = experimental.get(
+            "msc3952_intentional_mentions", False
        )

        # MSC3959: Do not generate notifications for edits.
@@ -187,10 +176,5 @@ class ExperimentalConfig(Config):
            "msc3958_supress_edit_notifs", False
        )

-        # MSC3966: exact_event_property_contains push rule condition.
-        self.msc3966_exact_event_property_contains = experimental.get(
-            "msc3966_exact_event_property_contains", False
-        )
-
        # MSC3967: Do not require UIA when first uploading cross signing keys
        self.msc3967_enabled = experimental.get("msc3967_enabled", False)
@@ -168,13 +168,24 @@ async def check_state_independent_auth_rules(
        return

    # 2. Reject if event has auth_events that: ...
-    auth_events = await store.get_events(
-        event.auth_event_ids(),
-        redact_behaviour=EventRedactBehaviour.as_is,
-        allow_rejected=True,
-    )
    if batched_auth_events:
-        auth_events.update(batched_auth_events)
+        # Copy the batched auth events to avoid mutating them.
+        auth_events = dict(batched_auth_events)
+        needed_auth_event_ids = set(event.auth_event_ids()) - batched_auth_events.keys()
+        if needed_auth_event_ids:
+            auth_events.update(
+                await store.get_events(
+                    needed_auth_event_ids,
+                    redact_behaviour=EventRedactBehaviour.as_is,
+                    allow_rejected=True,
+                )
+            )
+    else:
+        auth_events = await store.get_events(
+            event.auth_event_ids(),
+            redact_behaviour=EventRedactBehaviour.as_is,
+            allow_rejected=True,
+        )

    room_id = event.room_id
    auth_dict: MutableStateMap[str] = {}
@@ -293,6 +293,7 @@ class EventContext(UnpersistedEventContextBase):
            Maps a (type, state_key) to the event ID of the state event matching
            this tuple.
        """
+
        assert self.state_group_before_event is not None
        return await self._storage.state.get_state_ids_for_group(
            self.state_group_before_event, state_filter
@@ -63,9 +63,18 @@ class EventAuthHandler:
            self._store, event, batched_auth_events
        )
        auth_event_ids = event.auth_event_ids()
-        auth_events_by_id = await self._store.get_events(auth_event_ids)
+
        if batched_auth_events:
-            auth_events_by_id.update(batched_auth_events)
+            # Copy the batched auth events to avoid mutating them.
+            auth_events_by_id = dict(batched_auth_events)
+            needed_auth_event_ids = set(auth_event_ids) - set(batched_auth_events)
+            if needed_auth_event_ids:
+                auth_events_by_id.update(
+                    await self._store.get_events(needed_auth_event_ids)
+                )
+        else:
+            auth_events_by_id = await self._store.get_events(auth_event_ids)
+
        check_state_dependent_auth_rules(event, auth_events_by_id.values())

    def compute_auth_events(
@@ -683,7 +683,7 @@ class PaginationHandler:

                    await self._storage_controllers.purge_events.purge_room(room_id)

-            logger.info("complete")
+            logger.info("purge complete for room_id %s", room_id)
            self._delete_by_id[delete_id].status = DeleteStatus.STATUS_COMPLETE
        except Exception:
            f = Failure()
@@ -596,14 +596,20 @@ class RegistrationHandler:
        Args:
            user_id: The user to join
        """
+        # If there are no rooms to auto-join, just bail.
+        if not self.hs.config.registration.auto_join_rooms:
+            return
+
        # auto-join the user to any rooms we're supposed to dump them into

        # try to create the room if we're the first real user on the server. Note
        # that an auto-generated support or bot user is not a real user and will never be
        # the user to create the room
        should_auto_create_rooms = False
-        is_real_user = await self.store.is_real_user(user_id)
-        if self.hs.config.registration.autocreate_auto_join_rooms and is_real_user:
+        if (
+            self.hs.config.registration.autocreate_auto_join_rooms
+            and await self.store.is_real_user(user_id)
+        ):
            count = await self.store.count_real_users()
            should_auto_create_rooms = count == 1

@@ -569,7 +569,7 @@ class RoomCreationHandler:
            new_room_id,
            # we expect to override all the presets with initial_state, so this is
            # somewhat arbitrary.
-            preset_config=RoomCreationPreset.PRIVATE_CHAT,
+            room_config={"preset": RoomCreationPreset.PRIVATE_CHAT},
            invite_list=[],
            initial_state=initial_state,
            creation_content=creation_content,
@@ -904,13 +904,6 @@ class RoomCreationHandler:
                check_membership=False,
            )

-        preset_config = config.get(
-            "preset",
-            RoomCreationPreset.PRIVATE_CHAT
-            if visibility == "private"
-            else RoomCreationPreset.PUBLIC_CHAT,
-        )
-
        raw_initial_state = config.get("initial_state", [])

        initial_state = OrderedDict()
@@ -929,7 +922,7 @@ class RoomCreationHandler:
        ) = await self._send_events_for_new_room(
            requester,
            room_id,
-            preset_config=preset_config,
+            room_config=config,
            invite_list=invite_list,
            initial_state=initial_state,
            creation_content=creation_content,
@@ -938,48 +931,6 @@ class RoomCreationHandler:
            creator_join_profile=creator_join_profile,
        )

-        if "name" in config:
-            name = config["name"]
-            (
-                name_event,
-                last_stream_id,
-            ) = await self.event_creation_handler.create_and_send_nonmember_event(
-                requester,
-                {
-                    "type": EventTypes.Name,
-                    "room_id": room_id,
-                    "sender": user_id,
-                    "state_key": "",
-                    "content": {"name": name},
-                },
-                ratelimit=False,
-                prev_event_ids=[last_sent_event_id],
-                depth=depth,
-            )
-            last_sent_event_id = name_event.event_id
-            depth += 1
-
-        if "topic" in config:
-            topic = config["topic"]
-            (
-                topic_event,
-                last_stream_id,
-            ) = await self.event_creation_handler.create_and_send_nonmember_event(
-                requester,
-                {
-                    "type": EventTypes.Topic,
-                    "room_id": room_id,
-                    "sender": user_id,
-                    "state_key": "",
-                    "content": {"topic": topic},
-                },
-                ratelimit=False,
-                prev_event_ids=[last_sent_event_id],
-                depth=depth,
-            )
-            last_sent_event_id = topic_event.event_id
-            depth += 1
-
        # we avoid dropping the lock between invites, as otherwise joins can
        # start coming in and making the createRoom slow.
        #
@@ -1047,7 +998,7 @@ class RoomCreationHandler:
        self,
        creator: Requester,
        room_id: str,
-        preset_config: str,
+        room_config: JsonDict,
        invite_list: List[str],
        initial_state: MutableStateMap,
        creation_content: JsonDict,
@@ -1064,11 +1015,33 @@ class RoomCreationHandler:

        Rate limiting should already have been applied by this point.

+        Args:
+            creator:
+                the user requesting the room creation
+            room_id:
+                room id for the room being created
+            room_config:
+                A dict of configuration options. This will be the body of
+                a /createRoom request; see
+                https://spec.matrix.org/latest/client-server-api/#post_matrixclientv3createroom
+            invite_list:
+                a list of user ids to invite to the room
+            initial_state:
+                A list of state events to set in the new room.
+            creation_content:
+                Extra keys, such as m.federate, to be added to the content of the m.room.create event.
+            room_alias:
+                alias for the room
+            power_level_content_override:
+                The power level content to override in the default power level event.
+            creator_join_profile:
+                Set to override the displayname and avatar for the creating
+                user in this room.
+
        Returns:
            A tuple containing the stream ID, event ID and depth of the last
            event sent to the room.
        """
-
        creator_id = creator.user.to_string()
        event_keys = {"room_id": room_id, "sender": creator_id, "state_key": ""}
        depth = 1
@@ -1079,9 +1052,6 @@ class RoomCreationHandler:
        # created (but not persisted to the db) to determine state for future created events
        # (as this info can't be pulled from the db)
        state_map: MutableStateMap[str] = {}
-        # current_state_group of last event created. Used for computing event context of
-        # events to be batched
-        current_state_group: Optional[int] = None

        def create_event_dict(etype: str, content: JsonDict, **kwargs: Any) -> JsonDict:
            e = {"type": etype, "content": content}
@@ -1123,7 +1093,9 @@ class RoomCreationHandler:
                event_dict,
                prev_event_ids=prev_event,
                depth=depth,
-                state_map=state_map,
+                # Take a copy to ensure each event gets a unique copy of
+                # state_map since it is modified below.
+                state_map=dict(state_map),
                for_batch=for_batch,
            )

@@ -1133,6 +1105,14 @@ class RoomCreationHandler:

            return new_event, new_unpersisted_context

+        visibility = room_config.get("visibility", "private")
+        preset_config = room_config.get(
+            "preset",
+            RoomCreationPreset.PRIVATE_CHAT
+            if visibility == "private"
+            else RoomCreationPreset.PUBLIC_CHAT,
+        )
+
        try:
            config = self._presets_dict[preset_config]
        except KeyError:
@@ -1284,6 +1264,24 @@ class RoomCreationHandler:
            )
            events_to_send.append((encryption_event, encryption_context))

+        if "name" in room_config:
+            name = room_config["name"]
+            name_event, name_context = await create_event(
+                EventTypes.Name,
+                {"name": name},
+                True,
+            )
+            events_to_send.append((name_event, name_context))
+
+        if "topic" in room_config:
+            topic = room_config["topic"]
+            topic_event, topic_context = await create_event(
+                EventTypes.Topic,
+                {"topic": topic},
+                True,
+            )
+            events_to_send.append((topic_event, topic_context))
+
        datastore = self.hs.get_datastores().state
        events_and_context = (
            await UnpersistedEventContext.batch_persist_unpersisted_contexts(
@@ -1226,6 +1226,10 @@ class SyncHandler:
                continue

            event_with_membership_auth = events_with_membership_auth[member]
+            is_create = (
+                event_with_membership_auth.is_state()
+                and event_with_membership_auth.type == EventTypes.Create
+            )
            is_join = (
                event_with_membership_auth.is_state()
                and event_with_membership_auth.type == EventTypes.Member
@@ -1233,9 +1237,10 @@ class SyncHandler:
                and event_with_membership_auth.content.get("membership")
                == Membership.JOIN
            )
-            if not is_join:
+            if not is_create and not is_join:
                # The event must include the desired membership as an auth event, unless
-                # it's the first join event for a given user.
+                # it's the `m.room.create` event for a room or the first join event for
+                # a given user.
                missing_members.add(member)
            auth_event_ids.update(event_with_membership_auth.auth_event_ids())

@@ -268,8 +268,8 @@ class BlacklistingAgentWrapper(Agent):
    def __init__(
        self,
        agent: IAgent,
+        ip_blacklist: IPSet,
        ip_whitelist: Optional[IPSet] = None,
-        ip_blacklist: Optional[IPSet] = None,
    ):
        """
        Args:
@@ -291,7 +291,9 @@ class BlacklistingAgentWrapper(Agent):
        h = urllib.parse.urlparse(uri.decode("ascii"))

        try:
-            ip_address = IPAddress(h.hostname)
+            # h.hostname is Optional[str], None raises an AddrFormatError, so
+            # this is safe even though IPAddress requires a str.
+            ip_address = IPAddress(h.hostname)  # type: ignore[arg-type]
        except AddrFormatError:
            # Not an IP
            pass
@@ -388,8 +390,8 @@ class SimpleHttpClient:
            # by the DNS resolution.
            self.agent = BlacklistingAgentWrapper(
                self.agent,
-                ip_whitelist=self._ip_whitelist,
                ip_blacklist=self._ip_blacklist,
+                ip_whitelist=self._ip_whitelist,
            )

    async def request(
@@ -87,7 +87,7 @@ class MatrixFederationAgent:
        reactor: ISynapseReactor,
        tls_client_options_factory: Optional[FederationPolicyForHTTPS],
        user_agent: bytes,
-        ip_whitelist: IPSet,
+        ip_whitelist: Optional[IPSet],
        ip_blacklist: IPSet,
        _srv_resolver: Optional[SrvResolver] = None,
        _well_known_resolver: Optional[WellKnownResolver] = None,
@@ -273,10 +273,7 @@ class BulkPushRuleEvaluator:
                    related_event_id, allow_none=True
                )
                if related_event is not None:
-                    related_events[relation_type] = _flatten_dict(
-                        related_event,
-                        msc3873_escape_event_match_key=self.hs.config.experimental.msc3873_escape_event_match_key,
-                    )
+                    related_events[relation_type] = _flatten_dict(related_event)

            reply_event_id = (
                event.content.get("m.relates_to", {})
@@ -291,10 +288,7 @@ class BulkPushRuleEvaluator:
                )

                if related_event is not None:
-                    related_events["m.in_reply_to"] = _flatten_dict(
-                        related_event,
-                        msc3873_escape_event_match_key=self.hs.config.experimental.msc3873_escape_event_match_key,
-                    )
+                    related_events["m.in_reply_to"] = _flatten_dict(related_event)

                    # indicate that this is from a fallback relation.
                    if relation_type == "m.thread" and event.content.get(
@@ -401,10 +395,7 @@ class BulkPushRuleEvaluator:
        )

        evaluator = PushRuleEvaluator(
-            _flatten_dict(
-                event,
-                msc3873_escape_event_match_key=self.hs.config.experimental.msc3873_escape_event_match_key,
-            ),
+            _flatten_dict(event),
            has_mentions,
            room_member_count,
            sender_power_level,
@@ -413,7 +404,6 @@ class BulkPushRuleEvaluator:
            self._related_event_match_enabled,
            event.room_version.msc3931_push_features,
            self.hs.config.experimental.msc1767_enabled,  # MSC3931 flag
-            self.hs.config.experimental.msc3966_exact_event_property_contains,
        )

        users = rules_by_user.keys()
@@ -495,8 +485,6 @@ def _flatten_dict(
    d: Union[EventBase, Mapping[str, Any]],
    prefix: Optional[List[str]] = None,
    result: Optional[Dict[str, JsonValue]] = None,
-    *,
-    msc3873_escape_event_match_key: bool = False,
 ) -> Dict[str, JsonValue]:
    """
    Given a JSON dictionary (or event) which might contain sub dictionaries,
@@ -525,11 +513,10 @@ def _flatten_dict(
    if result is None:
        result = {}
    for key, value in d.items():
-        if msc3873_escape_event_match_key:
-            # Escape periods in the key with a backslash (and backslashes with an
-            # extra backslash). This is since a period is used as a separator between
-            # nested fields.
-            key = key.replace("\\", "\\\\").replace(".", "\\.")
+        # Escape periods in the key with a backslash (and backslashes with an
+        # extra backslash). This is since a period is used as a separator between
+        # nested fields.
+        key = key.replace("\\", "\\\\").replace(".", "\\.")

        if _is_simple_value(value):
            result[".".join(prefix + [key])] = value
@@ -537,12 +524,7 @@ def _flatten_dict(
            result[".".join(prefix + [key])] = [v for v in value if _is_simple_value(v)]
        elif isinstance(value, Mapping):
            # do not set `room_version` due to recursion considerations below
-            _flatten_dict(
-                value,
-                prefix=(prefix + [key]),
-                result=result,
-                msc3873_escape_event_match_key=msc3873_escape_event_match_key,
-            )
+            _flatten_dict(value, prefix=(prefix + [key]), result=result)

    # `room_version` should only ever be set when looking at the top level of an event
    if (
@@ -41,7 +41,7 @@ The general interaction of the classes are:
                    v |
            +-------------+
            | Protocols   |
-            | (TCP/redis) |
+            | (Redis)     |
            +-------------+

 Where the ReplicationDataHandler (or subclasses) handles incoming stream
@@ -18,16 +18,12 @@ from typing import TYPE_CHECKING, Dict, Iterable, List, Optional, Set, Tuple

 from twisted.internet import defer
 from twisted.internet.defer import Deferred
-from twisted.internet.interfaces import IAddress, IConnector
-from twisted.internet.protocol import ReconnectingClientFactory
-from twisted.python.failure import Failure

 from synapse.api.constants import EventTypes, Membership, ReceiptTypes
 from synapse.federation import send_queue
 from synapse.federation.sender import FederationSender
 from synapse.logging.context import PreserveLoggingContext, make_deferred_yieldable
 from synapse.metrics.background_process_metrics import run_as_background_process
-from synapse.replication.tcp.protocol import ClientReplicationStreamProtocol
 from synapse.replication.tcp.streams import (
    AccountDataStream,
    DeviceListsStream,
@@ -53,7 +49,6 @@ from synapse.util.async_helpers import Linearizer, timeout_deferred
 from synapse.util.metrics import Measure

 if TYPE_CHECKING:
-    from synapse.replication.tcp.handler import ReplicationCommandHandler
    from synapse.server import HomeServer

 logger = logging.getLogger(__name__)
@@ -62,52 +57,6 @@ logger = logging.getLogger(__name__)
 _WAIT_FOR_REPLICATION_TIMEOUT_SECONDS = 5


-class DirectTcpReplicationClientFactory(ReconnectingClientFactory):
-    """Factory for building connections to the master. Will reconnect if the
-    connection is lost.
-
-    Accepts a handler that is passed to `ClientReplicationStreamProtocol`.
-    """
-
-    initialDelay = 0.1
-    maxDelay = 1  # Try at least once every N seconds
-
-    def __init__(
-        self,
-        hs: "HomeServer",
-        client_name: str,
-        command_handler: "ReplicationCommandHandler",
-    ):
-        self.client_name = client_name
-        self.command_handler = command_handler
-        self.server_name = hs.config.server.server_name
-        self.hs = hs
-        self._clock = hs.get_clock()  # As self.clock is defined in super class
-
-        hs.get_reactor().addSystemEventTrigger("before", "shutdown", self.stopTrying)
-
-    def startedConnecting(self, connector: IConnector) -> None:
-        logger.info("Connecting to replication: %r", connector.getDestination())
-
-    def buildProtocol(self, addr: IAddress) -> ClientReplicationStreamProtocol:
-        logger.info("Connected to replication: %r", addr)
-        return ClientReplicationStreamProtocol(
-            self.hs,
-            self.client_name,
-            self.server_name,
-            self._clock,
-            self.command_handler,
-        )
-
-    def clientConnectionLost(self, connector: IConnector, reason: Failure) -> None:
-        logger.error("Lost replication conn: %r", reason)
-        ReconnectingClientFactory.clientConnectionLost(self, connector, reason)
-
-    def clientConnectionFailed(self, connector: IConnector, reason: Failure) -> None:
-        logger.error("Failed to connect to replication: %r", reason)
-        ReconnectingClientFactory.clientConnectionFailed(self, connector, reason)
-
-
 class ReplicationDataHandler:
    """Handles incoming stream updates from replication.

@@ -114,9 +114,8 @@ class ReplicationCommandHandler:
        self._streams_to_replicate: List[Stream] = []

        for stream in self._streams.values():
-            if hs.config.redis.redis_enabled and stream.NAME == CachesStream.NAME:
-                # All workers can write to the cache invalidation stream when
-                # using redis.
+            if stream.NAME == CachesStream.NAME:
+                # All workers can write to the cache invalidation stream.
                self._streams_to_replicate.append(stream)
                continue

@@ -236,14 +235,9 @@ class ReplicationCommandHandler:
        if self._is_master:
            self._server_notices_sender = hs.get_server_notices_sender()

-        if hs.config.redis.redis_enabled:
-            # If we're using Redis, it's the background worker that should
-            # receive USER_IP commands and store the relevant client IPs.
-            self._should_insert_client_ips = hs.config.worker.run_background_tasks
-        else:
-            # If we're NOT using Redis, this must be handled by the master
-            self._should_insert_client_ips = hs.get_instance_name() == "master"
-
+        # The worker assigned background tasks should handle client IPs.
+        # receive USER_IP commands and store the relevant client IPs.
+        self._should_insert_client_ips = hs.config.worker.run_background_tasks
        if self._is_master or self._should_insert_client_ips:
            self.subscribe_to_channel("USER_IP")

@@ -11,82 +11,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-"""This module contains the implementation of both the client and server
-protocols.
-
-The basic structure of the protocol is line based, where the initial word of
-each line specifies the command. The rest of the line is parsed based on the
-command. For example, the `RDATA` command is defined as::
-
-    RDATA <stream_name> <token> <row_json>
-
-(Note that `<row_json>` may contains spaces, but cannot contain newlines.)
-
-Blank lines are ignored.
-
-# Example
-
-An example iteraction is shown below. Each line is prefixed with '>' or '<' to
-indicate which side is sending, these are *not* included on the wire::
-
-    * connection established *
-    > SERVER localhost:8823
-    > PING 1490197665618
-    < NAME synapse.app.appservice
-    < PING 1490197665618
-    < REPLICATE
-    > POSITION events 1
-    > POSITION backfill 1
-    > POSITION caches 1
-    > RDATA caches 2 ["get_user_by_id",["@01register-user:localhost:8823"],1490197670513]
-    > RDATA events 14 ["ev", ["$149019767112vOHxz:localhost:8823",
-        "!AFDCvgApUmpdfVjIXm:localhost:8823","m.room.guest_access","",null]]
-    < PING 1490197675618
-    > ERROR server stopping
-    * connection closed by server *
-"""
-import fcntl
-import logging
-import struct
-from inspect import isawaitable
-from typing import TYPE_CHECKING, Any, Collection, List, Optional
-
 from prometheus_client import Counter
-from zope.interface import Interface, implementer
+from zope.interface import Interface

-from twisted.internet import task
-from twisted.internet.tcp import Connection
-from twisted.protocols.basic import LineOnlyReceiver
-from twisted.python.failure import Failure
-
-from synapse.logging.context import PreserveLoggingContext
-from synapse.metrics import LaterGauge
-from synapse.metrics.background_process_metrics import (
-    BackgroundProcessLoggingContext,
-    run_as_background_process,
-)
-from synapse.replication.tcp.commands import (
-    VALID_CLIENT_COMMANDS,
-    VALID_SERVER_COMMANDS,
-    Command,
-    ErrorCommand,
-    NameCommand,
-    PingCommand,
-    ReplicateCommand,
-    ServerCommand,
-    parse_command_from_line,
-)
-from synapse.util import Clock
-from synapse.util.stringutils import random_string
-
-if TYPE_CHECKING:
-    from synapse.replication.tcp.handler import ReplicationCommandHandler
-    from synapse.server import HomeServer
-
-
-connection_close_counter = Counter(
-    "synapse_replication_tcp_protocol_close_reason", "", ["reason_type"]
-)
+from synapse.replication.tcp.commands import Command

 tcp_inbound_commands_counter = Counter(
    "synapse_replication_tcp_protocol_inbound_commands",
@@ -100,484 +28,9 @@ tcp_outbound_commands_counter = Counter(
    ["command", "name"],
 )

-# A list of all connected protocols. This allows us to send metrics about the
-# connections.
-connected_connections: "List[BaseReplicationStreamProtocol]" = []
-
-
-logger = logging.getLogger(__name__)
-
-
-PING_TIME = 5000
-PING_TIMEOUT_MULTIPLIER = 5
-PING_TIMEOUT_MS = PING_TIME * PING_TIMEOUT_MULTIPLIER
-
-
-class ConnectionStates:
-    CONNECTING = "connecting"
-    ESTABLISHED = "established"
-    PAUSED = "paused"
-    CLOSED = "closed"
-

 class IReplicationConnection(Interface):
    """An interface for replication connections."""

    def send_command(cmd: Command) -> None:
        """Send the command down the connection"""
-
-
-@implementer(IReplicationConnection)
-class BaseReplicationStreamProtocol(LineOnlyReceiver):
-    """Base replication protocol shared between client and server.
-
-    Reads lines (ignoring blank ones) and parses them into command classes,
-    asserting that they are valid for the given direction, i.e. server commands
-    are only sent by the server.
-
-    On receiving a new command it calls `on_<COMMAND_NAME>` with the parsed
-    command before delegating to `ReplicationCommandHandler.on_<COMMAND_NAME>`.
-    `ReplicationCommandHandler.on_<COMMAND_NAME>` can optionally return a coroutine;
-    if so, that will get run as a background process.
-
-    It also sends `PING` periodically, and correctly times out remote connections
-    (if they send a `PING` command)
-    """
-
-    # The transport is going to be an ITCPTransport, but that doesn't have the
-    # (un)registerProducer methods, those are only on the implementation.
-    transport: Connection
-
-    delimiter = b"\n"
-
-    # Valid commands we expect to receive
-    VALID_INBOUND_COMMANDS: Collection[str] = []
-
-    # Valid commands we can send
-    VALID_OUTBOUND_COMMANDS: Collection[str] = []
-
-    max_line_buffer = 10000
-
-    def __init__(self, clock: Clock, handler: "ReplicationCommandHandler"):
-        self.clock = clock
-        self.command_handler = handler
-
-        self.last_received_command = self.clock.time_msec()
-        self.last_sent_command = 0
-        # When we requested the connection be closed
-        self.time_we_closed: Optional[int] = None
-
-        self.received_ping = False  # Have we received a ping from the other side
-
-        self.state = ConnectionStates.CONNECTING
-
-        self.name = "anon"  # The name sent by a client.
-        self.conn_id = random_string(5)  # To dedupe in case of name clashes.
-
-        # List of pending commands to send once we've established the connection
-        self.pending_commands: List[Command] = []
-
-        # The LoopingCall for sending pings.
-        self._send_ping_loop: Optional[task.LoopingCall] = None
-
-        # a logcontext which we use for processing incoming commands. We declare it as a
-        # background process so that the CPU stats get reported to prometheus.
-        with PreserveLoggingContext():
-            # thanks to `PreserveLoggingContext()`, the new logcontext is guaranteed to
-            # capture the sentinel context as its containing context and won't prevent
-            # GC of / unintentionally reactivate what would be the current context.
-            self._logging_context = BackgroundProcessLoggingContext(
-                "replication-conn", self.conn_id
-            )
-
-    def connectionMade(self) -> None:
-        logger.info("[%s] Connection established", self.id())
-
-        self.state = ConnectionStates.ESTABLISHED
-
-        connected_connections.append(self)  # Register connection for metrics
-
-        assert self.transport is not None
-        self.transport.registerProducer(self, True)  # For the *Producing callbacks
-
-        self._send_pending_commands()
-
-        # Starts sending pings
-        self._send_ping_loop = self.clock.looping_call(self.send_ping, 5000)
-
-        # Always send the initial PING so that the other side knows that they
-        # can time us out.
-        self.send_command(PingCommand(str(self.clock.time_msec())))
-
-        self.command_handler.new_connection(self)
-
-    def send_ping(self) -> None:
-        """Periodically sends a ping and checks if we should close the connection
-        due to the other side timing out.
-        """
-        now = self.clock.time_msec()
-
-        if self.time_we_closed:
-            if now - self.time_we_closed > PING_TIMEOUT_MS:
-                logger.info(
-                    "[%s] Failed to close connection gracefully, aborting", self.id()
-                )
-                assert self.transport is not None
-                self.transport.abortConnection()
-        else:
-            if now - self.last_sent_command >= PING_TIME:
-                self.send_command(PingCommand(str(now)))
-
-            if (
-                self.received_ping
-                and now - self.last_received_command > PING_TIMEOUT_MS
-            ):
-                logger.info(
-                    "[%s] Connection hasn't received command in %r ms. Closing.",
-                    self.id(),
-                    now - self.last_received_command,
-                )
-                self.send_error("ping timeout")
-
-    def lineReceived(self, line: bytes) -> None:
-        """Called when we've received a line"""
-        with PreserveLoggingContext(self._logging_context):
-            self._parse_and_dispatch_line(line)
-
-    def _parse_and_dispatch_line(self, line: bytes) -> None:
-        if line.strip() == b"":
-            # Ignore blank lines
-            return
-
-        linestr = line.decode("utf-8")
-
-        try:
-            cmd = parse_command_from_line(linestr)
-        except Exception as e:
-            logger.exception("[%s] failed to parse line: %r", self.id(), linestr)
-            self.send_error("failed to parse line: %r (%r):" % (e, linestr))
-            return
-
-        if cmd.NAME not in self.VALID_INBOUND_COMMANDS:
-            logger.error("[%s] invalid command %s", self.id(), cmd.NAME)
-            self.send_error("invalid command: %s", cmd.NAME)
-            return
-
-        self.last_received_command = self.clock.time_msec()
-
-        tcp_inbound_commands_counter.labels(cmd.NAME, self.name).inc()
-
-        self.handle_command(cmd)
-
-    def handle_command(self, cmd: Command) -> None:
-        """Handle a command we have received over the replication stream.
-
-        First calls `self.on_<COMMAND>` if it exists, then calls
-        `self.command_handler.on_<COMMAND>` if it exists (which can optionally
-        return an Awaitable).
-
-        This allows for protocol level handling of commands (e.g. PINGs), before
-        delegating to the handler.
-
-        Args:
-            cmd: received command
-        """
-        handled = False
-
-        # First call any command handlers on this instance. These are for TCP
-        # specific handling.
-        cmd_func = getattr(self, "on_%s" % (cmd.NAME,), None)
-        if cmd_func:
-            cmd_func(cmd)
-            handled = True
-
-        # Then call out to the handler.
-        cmd_func = getattr(self.command_handler, "on_%s" % (cmd.NAME,), None)
-        if cmd_func:
-            res = cmd_func(self, cmd)
-
-            # the handler might be a coroutine: fire it off as a background process
-            # if so.
-
-            if isawaitable(res):
-                run_as_background_process(
-                    "replication-" + cmd.get_logcontext_id(), lambda: res
-                )
-
-            handled = True
-
-        if not handled:
-            logger.warning("Unhandled command: %r", cmd)
-
-    def close(self) -> None:
-        logger.warning("[%s] Closing connection", self.id())
-        self.time_we_closed = self.clock.time_msec()
-        assert self.transport is not None
-        self.transport.loseConnection()
-        self.on_connection_closed()
-
-    def send_error(self, error_string: str, *args: Any) -> None:
-        """Send an error to remote and close the connection."""
-        self.send_command(ErrorCommand(error_string % args))
-        self.close()
-
-    def send_command(self, cmd: Command, do_buffer: bool = True) -> None:
-        """Send a command if connection has been established.
-
-        Args:
-            cmd
-            do_buffer: Whether to buffer the message or always attempt
-                to send the command. This is mostly used to send an error
-                message if we're about to close the connection due our buffers
-                becoming full.
-        """
-        if self.state == ConnectionStates.CLOSED:
-            logger.debug("[%s] Not sending, connection closed", self.id())
-            return
-
-        if do_buffer and self.state != ConnectionStates.ESTABLISHED:
-            self._queue_command(cmd)
-            return
-
-        tcp_outbound_commands_counter.labels(cmd.NAME, self.name).inc()
-
-        string = "%s %s" % (cmd.NAME, cmd.to_line())
-        if "\n" in string:
-            raise Exception("Unexpected newline in command: %r", string)
-
-        encoded_string = string.encode("utf-8")
-
-        if len(encoded_string) > self.MAX_LENGTH:
-            raise Exception(
-                "Failed to send command %s as too long (%d > %d)"
-                % (cmd.NAME, len(encoded_string), self.MAX_LENGTH)
-            )
-
-        self.sendLine(encoded_string)
-
-        self.last_sent_command = self.clock.time_msec()
-
-    def _queue_command(self, cmd: Command) -> None:
-        """Queue the command until the connection is ready to write to again."""
-        logger.debug("[%s] Queueing as conn %r, cmd: %r", self.id(), self.state, cmd)
-        self.pending_commands.append(cmd)
-
-        if len(self.pending_commands) > self.max_line_buffer:
-            # The other side is failing to keep up and out buffers are becoming
-            # full, so lets close the connection.
-            # XXX: should we squawk more loudly?
-            logger.error("[%s] Remote failed to keep up", self.id())
-            self.send_command(ErrorCommand("Failed to keep up"), do_buffer=False)
-            self.close()
-
-    def _send_pending_commands(self) -> None:
-        """Send any queued commandes"""
-        pending = self.pending_commands
-        self.pending_commands = []
-        for cmd in pending:
-            self.send_command(cmd)
-
-    def on_PING(self, cmd: PingCommand) -> None:
-        self.received_ping = True
-
-    def on_ERROR(self, cmd: ErrorCommand) -> None:
-        logger.error("[%s] Remote reported error: %r", self.id(), cmd.data)
-
-    def pauseProducing(self) -> None:
-        """This is called when both the kernel send buffer and the twisted
-        tcp connection send buffers have become full.
-
-        We don't actually have any control over those sizes, so we buffer some
-        commands ourselves before knifing the connection due to the remote
-        failing to keep up.
-        """
-        logger.info("[%s] Pause producing", self.id())
-        self.state = ConnectionStates.PAUSED
-
-    def resumeProducing(self) -> None:
-        """The remote has caught up after we started buffering!"""
-        logger.info("[%s] Resume producing", self.id())
-        self.state = ConnectionStates.ESTABLISHED
-        self._send_pending_commands()
-
-    def stopProducing(self) -> None:
-        """We're never going to send any more data (normally because either
-        we or the remote has closed the connection)
-        """
-        logger.info("[%s] Stop producing", self.id())
-        self.on_connection_closed()
-
-    def connectionLost(self, reason: Failure) -> None:  # type: ignore[override]
-        logger.info("[%s] Replication connection closed: %r", self.id(), reason)
-        if isinstance(reason, Failure):
-            assert reason.type is not None
-            connection_close_counter.labels(reason.type.__name__).inc()
-        else:
-            connection_close_counter.labels(reason.__class__.__name__).inc()  # type: ignore[unreachable]
-
-        try:
-            # Remove us from list of connections to be monitored
-            connected_connections.remove(self)
-        except ValueError:
-            pass
-
-        # Stop the looping call sending pings.
-        if self._send_ping_loop and self._send_ping_loop.running:
-            self._send_ping_loop.stop()
-
-        self.on_connection_closed()
-
-    def on_connection_closed(self) -> None:
-        logger.info("[%s] Connection was closed", self.id())
-
-        self.state = ConnectionStates.CLOSED
-        self.pending_commands = []
-
-        self.command_handler.lost_connection(self)
-
-        if self.transport:
-            self.transport.unregisterProducer()
-
-        # mark the logging context as finished by triggering `__exit__()`
-        with PreserveLoggingContext():
-            with self._logging_context:
-                pass
-            # the sentinel context is now active, which may not be correct.
-            # PreserveLoggingContext() will restore the correct logging context.
-
-    def __str__(self) -> str:
-        addr = None
-        if self.transport:
-            addr = str(self.transport.getPeer())
-        return "ReplicationConnection<name=%s,conn_id=%s,addr=%s>" % (
-            self.name,
-            self.conn_id,
-            addr,
-        )
-
-    def id(self) -> str:
-        return "%s-%s" % (self.name, self.conn_id)
-
-    def lineLengthExceeded(self, line: str) -> None:
-        """Called when we receive a line that is above the maximum line length"""
-        self.send_error("Line length exceeded")
-
-
-class ServerReplicationStreamProtocol(BaseReplicationStreamProtocol):
-    VALID_INBOUND_COMMANDS = VALID_CLIENT_COMMANDS
-    VALID_OUTBOUND_COMMANDS = VALID_SERVER_COMMANDS
-
-    def __init__(
-        self, server_name: str, clock: Clock, handler: "ReplicationCommandHandler"
-    ):
-        super().__init__(clock, handler)
-
-        self.server_name = server_name
-
-    def connectionMade(self) -> None:
-        self.send_command(ServerCommand(self.server_name))
-        super().connectionMade()
-
-    def on_NAME(self, cmd: NameCommand) -> None:
-        logger.info("[%s] Renamed to %r", self.id(), cmd.data)
-        self.name = cmd.data
-
-
-class ClientReplicationStreamProtocol(BaseReplicationStreamProtocol):
-    VALID_INBOUND_COMMANDS = VALID_SERVER_COMMANDS
-    VALID_OUTBOUND_COMMANDS = VALID_CLIENT_COMMANDS
-
-    def __init__(
-        self,
-        hs: "HomeServer",
-        client_name: str,
-        server_name: str,
-        clock: Clock,
-        command_handler: "ReplicationCommandHandler",
-    ):
-        super().__init__(clock, command_handler)
-
-        self.client_name = client_name
-        self.server_name = server_name
-
-    def connectionMade(self) -> None:
-        self.send_command(NameCommand(self.client_name))
-        super().connectionMade()
-
-        # Once we've connected subscribe to the necessary streams
-        self.replicate()
-
-    def on_SERVER(self, cmd: ServerCommand) -> None:
-        if cmd.data != self.server_name:
-            logger.error("[%s] Connected to wrong remote: %r", self.id(), cmd.data)
-            self.send_error("Wrong remote")
-
-    def replicate(self) -> None:
-        """Send the subscription request to the server"""
-        logger.info("[%s] Subscribing to replication streams", self.id())
-
-        self.send_command(ReplicateCommand())
-
-
-# The following simply registers metrics for the replication connections
-
-pending_commands = LaterGauge(
-    "synapse_replication_tcp_protocol_pending_commands",
-    "",
-    ["name"],
-    lambda: {(p.name,): len(p.pending_commands) for p in connected_connections},
-)
-
-
-def transport_buffer_size(protocol: BaseReplicationStreamProtocol) -> int:
-    if protocol.transport:
-        size = len(protocol.transport.dataBuffer) + protocol.transport._tempDataLen
-        return size
-    return 0
-
-
-transport_send_buffer = LaterGauge(
-    "synapse_replication_tcp_protocol_transport_send_buffer",
-    "",
-    ["name"],
-    lambda: {(p.name,): transport_buffer_size(p) for p in connected_connections},
-)
-
-
-def transport_kernel_read_buffer_size(
-    protocol: BaseReplicationStreamProtocol, read: bool = True
-) -> int:
-    SIOCINQ = 0x541B
-    SIOCOUTQ = 0x5411
-
-    if protocol.transport:
-        fileno = protocol.transport.getHandle().fileno()
-        if read:
-            op = SIOCINQ
-        else:
-            op = SIOCOUTQ
-        size = struct.unpack("I", fcntl.ioctl(fileno, op, b"\0\0\0\0"))[0]
-        return size
-    return 0
-
-
-tcp_transport_kernel_send_buffer = LaterGauge(
-    "synapse_replication_tcp_protocol_transport_kernel_send_buffer",
-    "",
-    ["name"],
-    lambda: {
-        (p.name,): transport_kernel_read_buffer_size(p, False)
-        for p in connected_connections
-    },
-)
-
-
-tcp_transport_kernel_read_buffer = LaterGauge(
-    "synapse_replication_tcp_protocol_transport_kernel_read_buffer",
-    "",
-    ["name"],
-    lambda: {
-        (p.name,): transport_kernel_read_buffer_size(p, True)
-        for p in connected_connections
-    },
-)
@@ -12,7 +12,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 from http import HTTPStatus
-from typing import TYPE_CHECKING, Awaitable, Optional, Tuple
+from typing import TYPE_CHECKING, Optional, Tuple

 from synapse.api.constants import EventTypes
 from synapse.api.errors import NotFoundError, SynapseError
@@ -23,10 +23,10 @@ from synapse.http.servlet import (
    parse_json_object_from_request,
 )
 from synapse.http.site import SynapseRequest
-from synapse.rest.admin import assert_requester_is_admin
-from synapse.rest.admin._base import admin_patterns
+from synapse.logging.opentracing import set_tag
+from synapse.rest.admin._base import admin_patterns, assert_user_is_admin
 from synapse.rest.client.transactions import HttpTransactionCache
-from synapse.types import JsonDict, UserID
+from synapse.types import JsonDict, Requester, UserID

 if TYPE_CHECKING:
    from synapse.server import HomeServer
@@ -70,10 +70,13 @@ class SendServerNoticeServlet(RestServlet):
            self.__class__.__name__,
        )

-    async def on_POST(
-        self, request: SynapseRequest, txn_id: Optional[str] = None
+    async def _do(
+        self,
+        request: SynapseRequest,
+        requester: Requester,
+        txn_id: Optional[str],
    ) -> Tuple[int, JsonDict]:
-        await assert_requester_is_admin(self.auth, request)
+        await assert_user_is_admin(self.auth, requester)
        body = parse_json_object_from_request(request)
        assert_params_in_dict(body, ("user_id", "content"))
        event_type = body.get("type", EventTypes.Message)
@@ -106,9 +109,18 @@ class SendServerNoticeServlet(RestServlet):

        return HTTPStatus.OK, {"event_id": event.event_id}

-    def on_PUT(
+    async def on_POST(
+        self,
+        request: SynapseRequest,
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
+        return await self._do(request, requester, None)
+
+    async def on_PUT(
        self, request: SynapseRequest, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, txn_id
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
+        set_tag("txn_id", txn_id)
+        return await self.txns.fetch_or_execute_request(
+            request, requester, self._do, request, requester, txn_id
        )
@@ -57,7 +57,7 @@ from synapse.metrics.background_process_metrics import run_as_background_process
 from synapse.rest.client._base import client_patterns
 from synapse.rest.client.transactions import HttpTransactionCache
 from synapse.streams.config import PaginationConfig
-from synapse.types import JsonDict, StreamToken, ThirdPartyInstanceID, UserID
+from synapse.types import JsonDict, Requester, StreamToken, ThirdPartyInstanceID, UserID
 from synapse.types.state import StateFilter
 from synapse.util import json_decoder
 from synapse.util.cancellation import cancellable
@@ -151,15 +151,22 @@ class RoomCreateRestServlet(TransactionRestServlet):
        PATTERNS = "/createRoom"
        register_txn_path(self, PATTERNS, http_server)

-    def on_PUT(
+    async def on_PUT(
        self, request: SynapseRequest, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
        set_tag("txn_id", txn_id)
-        return self.txns.fetch_or_execute_request(request, self.on_POST, request)
+        return await self.txns.fetch_or_execute_request(
+            request, requester, self._do, request, requester
+        )

    async def on_POST(self, request: SynapseRequest) -> Tuple[int, JsonDict]:
        requester = await self.auth.get_user_by_req(request)
+        return await self._do(request, requester)

+    async def _do(
+        self, request: SynapseRequest, requester: Requester
+    ) -> Tuple[int, JsonDict]:
        room_id, _, _ = await self._room_creation_handler.create_room(
            requester, self.get_room_config(request)
        )
@@ -172,9 +179,9 @@ class RoomCreateRestServlet(TransactionRestServlet):


 # TODO: Needs unit testing for generic events
-class RoomStateEventRestServlet(TransactionRestServlet):
+class RoomStateEventRestServlet(RestServlet):
    def __init__(self, hs: "HomeServer"):
-        super().__init__(hs)
+        super().__init__()
        self.event_creation_handler = hs.get_event_creation_handler()
        self.room_member_handler = hs.get_room_member_handler()
        self.message_handler = hs.get_message_handler()
@@ -324,16 +331,16 @@ class RoomSendEventRestServlet(TransactionRestServlet):
    def register(self, http_server: HttpServer) -> None:
        # /rooms/$roomid/send/$event_type[/$txn_id]
        PATTERNS = "/rooms/(?P<room_id>[^/]*)/send/(?P<event_type>[^/]*)"
-        register_txn_path(self, PATTERNS, http_server, with_get=True)
+        register_txn_path(self, PATTERNS, http_server)

-    async def on_POST(
+    async def _do(
        self,
        request: SynapseRequest,
+        requester: Requester,
        room_id: str,
        event_type: str,
-        txn_id: Optional[str] = None,
+        txn_id: Optional[str],
    ) -> Tuple[int, JsonDict]:
-        requester = await self.auth.get_user_by_req(request, allow_guest=True)
        content = parse_json_object_from_request(request)

        event_dict: JsonDict = {
@@ -362,18 +369,30 @@ class RoomSendEventRestServlet(TransactionRestServlet):
        set_tag("event_id", event_id)
        return 200, {"event_id": event_id}

-    def on_GET(
-        self, request: SynapseRequest, room_id: str, event_type: str, txn_id: str
-    ) -> Tuple[int, str]:
-        return 200, "Not implemented"
+    async def on_POST(
+        self,
+        request: SynapseRequest,
+        room_id: str,
+        event_type: str,
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
+        return await self._do(request, requester, room_id, event_type, None)

-    def on_PUT(
+    async def on_PUT(
        self, request: SynapseRequest, room_id: str, event_type: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
        set_tag("txn_id", txn_id)

-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, room_id, event_type, txn_id
+        return await self.txns.fetch_or_execute_request(
+            request,
+            requester,
+            self._do,
+            request,
+            requester,
+            room_id,
+            event_type,
+            txn_id,
        )


@@ -389,14 +408,13 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):
        PATTERNS = "/join/(?P<room_identifier>[^/]*)"
        register_txn_path(self, PATTERNS, http_server)

-    async def on_POST(
+    async def _do(
        self,
        request: SynapseRequest,
+        requester: Requester,
        room_identifier: str,
-        txn_id: Optional[str] = None,
+        txn_id: Optional[str],
    ) -> Tuple[int, JsonDict]:
-        requester = await self.auth.get_user_by_req(request, allow_guest=True)
-
        content = parse_json_object_from_request(request, allow_empty_body=True)

        # twisted.web.server.Request.args is incorrectly defined as Optional[Any]
@@ -420,22 +438,31 @@ class JoinRoomAliasServlet(ResolveRoomIdMixin, TransactionRestServlet):

        return 200, {"room_id": room_id}

-    def on_PUT(
+    async def on_POST(
+        self,
+        request: SynapseRequest,
+        room_identifier: str,
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
+        return await self._do(request, requester, room_identifier, None)
+
+    async def on_PUT(
        self, request: SynapseRequest, room_identifier: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
        set_tag("txn_id", txn_id)

-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, room_identifier, txn_id
+        return await self.txns.fetch_or_execute_request(
+            request, requester, self._do, request, requester, room_identifier, txn_id
        )


 # TODO: Needs unit testing
-class PublicRoomListRestServlet(TransactionRestServlet):
+class PublicRoomListRestServlet(RestServlet):
    PATTERNS = client_patterns("/publicRooms$", v1=True)

    def __init__(self, hs: "HomeServer"):
-        super().__init__(hs)
+        super().__init__()
        self.hs = hs
        self.auth = hs.get_auth()

@@ -907,22 +934,25 @@ class RoomForgetRestServlet(TransactionRestServlet):
        PATTERNS = "/rooms/(?P<room_id>[^/]*)/forget"
        register_txn_path(self, PATTERNS, http_server)

-    async def on_POST(
-        self, request: SynapseRequest, room_id: str, txn_id: Optional[str] = None
-    ) -> Tuple[int, JsonDict]:
-        requester = await self.auth.get_user_by_req(request, allow_guest=False)
-
+    async def _do(self, requester: Requester, room_id: str) -> Tuple[int, JsonDict]:
        await self.room_member_handler.forget(user=requester.user, room_id=room_id)

        return 200, {}

-    def on_PUT(
+    async def on_POST(
+        self, request: SynapseRequest, room_id: str
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=False)
+        return await self._do(requester, room_id)
+
+    async def on_PUT(
        self, request: SynapseRequest, room_id: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=False)
        set_tag("txn_id", txn_id)

-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, room_id, txn_id
+        return await self.txns.fetch_or_execute_request(
+            request, requester, self._do, requester, room_id
        )


@@ -941,15 +971,14 @@ class RoomMembershipRestServlet(TransactionRestServlet):
        )
        register_txn_path(self, PATTERNS, http_server)

-    async def on_POST(
+    async def _do(
        self,
        request: SynapseRequest,
+        requester: Requester,
        room_id: str,
        membership_action: str,
-        txn_id: Optional[str] = None,
+        txn_id: Optional[str],
    ) -> Tuple[int, JsonDict]:
-        requester = await self.auth.get_user_by_req(request, allow_guest=True)
-
        if requester.is_guest and membership_action not in {
            Membership.JOIN,
            Membership.LEAVE,
@@ -1014,13 +1043,30 @@ class RoomMembershipRestServlet(TransactionRestServlet):

        return 200, return_value

-    def on_PUT(
+    async def on_POST(
+        self,
+        request: SynapseRequest,
+        room_id: str,
+        membership_action: str,
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
+        return await self._do(request, requester, room_id, membership_action, None)
+
+    async def on_PUT(
        self, request: SynapseRequest, room_id: str, membership_action: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request, allow_guest=True)
        set_tag("txn_id", txn_id)

-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, room_id, membership_action, txn_id
+        return await self.txns.fetch_or_execute_request(
+            request,
+            requester,
+            self._do,
+            request,
+            requester,
+            room_id,
+            membership_action,
+            txn_id,
        )


@@ -1036,14 +1082,14 @@ class RoomRedactEventRestServlet(TransactionRestServlet):
        PATTERNS = "/rooms/(?P<room_id>[^/]*)/redact/(?P<event_id>[^/]*)"
        register_txn_path(self, PATTERNS, http_server)

-    async def on_POST(
+    async def _do(
        self,
        request: SynapseRequest,
+        requester: Requester,
        room_id: str,
        event_id: str,
-        txn_id: Optional[str] = None,
+        txn_id: Optional[str],
    ) -> Tuple[int, JsonDict]:
-        requester = await self.auth.get_user_by_req(request)
        content = parse_json_object_from_request(request)

        try:
@@ -1094,13 +1140,23 @@ class RoomRedactEventRestServlet(TransactionRestServlet):
        set_tag("event_id", event_id)
        return 200, {"event_id": event_id}

-    def on_PUT(
+    async def on_POST(
+        self,
+        request: SynapseRequest,
+        room_id: str,
+        event_id: str,
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
+        return await self._do(request, requester, room_id, event_id, None)
+
+    async def on_PUT(
        self, request: SynapseRequest, room_id: str, event_id: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
+    ) -> Tuple[int, JsonDict]:
+        requester = await self.auth.get_user_by_req(request)
        set_tag("txn_id", txn_id)

-        return self.txns.fetch_or_execute_request(
-            request, self.on_POST, request, room_id, event_id, txn_id
+        return await self.txns.fetch_or_execute_request(
+            request, requester, self._do, request, requester, room_id, event_id, txn_id
        )


@@ -1224,7 +1280,6 @@ def register_txn_path(
    servlet: RestServlet,
    regex_string: str,
    http_server: HttpServer,
-    with_get: bool = False,
 ) -> None:
    """Registers a transaction-based path.

@@ -1236,7 +1291,6 @@ def register_txn_path(
        regex_string: The regex string to register. Must NOT have a
            trailing $ as this string will be appended to.
        http_server: The http_server to register paths with.
-        with_get: True to also register respective GET paths for the PUTs.
    """
    on_POST = getattr(servlet, "on_POST", None)
    on_PUT = getattr(servlet, "on_PUT", None)
@@ -1254,18 +1308,6 @@ def register_txn_path(
        on_PUT,
        servlet.__class__.__name__,
    )
-    on_GET = getattr(servlet, "on_GET", None)
-    if with_get:
-        if on_GET is None:
-            raise RuntimeError(
-                "register_txn_path called with with_get = True, but no on_GET method exists"
-            )
-        http_server.register_paths(
-            "GET",
-            client_patterns(regex_string + "/(?P<txn_id>[^/]*)$", v1=True),
-            on_GET,
-            servlet.__class__.__name__,
-        )


 class TimestampLookupRestServlet(RestServlet):
@@ -13,7 +13,7 @@
 # limitations under the License.

 import logging
-from typing import TYPE_CHECKING, Awaitable, Tuple
+from typing import TYPE_CHECKING, Tuple

 from synapse.http import servlet
 from synapse.http.server import HttpServer
@@ -21,7 +21,7 @@ from synapse.http.servlet import assert_params_in_dict, parse_json_object_from_r
 from synapse.http.site import SynapseRequest
 from synapse.logging.opentracing import set_tag
 from synapse.rest.client.transactions import HttpTransactionCache
-from synapse.types import JsonDict
+from synapse.types import JsonDict, Requester

 from ._base import client_patterns

@@ -43,19 +43,26 @@ class SendToDeviceRestServlet(servlet.RestServlet):
        self.txns = HttpTransactionCache(hs)
        self.device_message_handler = hs.get_device_message_handler()

-    def on_PUT(
-        self, request: SynapseRequest, message_type: str, txn_id: str
-    ) -> Awaitable[Tuple[int, JsonDict]]:
-        set_tag("txn_id", txn_id)
-        return self.txns.fetch_or_execute_request(
-            request, self._put, request, message_type, txn_id
-        )
-
-    async def _put(
+    async def on_PUT(
        self, request: SynapseRequest, message_type: str, txn_id: str
    ) -> Tuple[int, JsonDict]:
        requester = await self.auth.get_user_by_req(request, allow_guest=True)
+        set_tag("txn_id", txn_id)
+        return await self.txns.fetch_or_execute_request(
+            request,
+            requester,
+            self._put,
+            request,
+            requester,
+            message_type,
+        )

+    async def _put(
+        self,
+        request: SynapseRequest,
+        requester: Requester,
+        message_type: str,
+    ) -> Tuple[int, JsonDict]:
        content = parse_json_object_from_request(request)
        assert_params_in_dict(content, ("messages",))

@@ -15,16 +15,16 @@
 """This module contains logic for storing HTTP PUT transactions. This is used
 to ensure idempotency when performing PUTs using the REST API."""
 import logging
-from typing import TYPE_CHECKING, Awaitable, Callable, Dict, Tuple
+from typing import TYPE_CHECKING, Awaitable, Callable, Dict, Hashable, Tuple

 from typing_extensions import ParamSpec

 from twisted.internet.defer import Deferred
 from twisted.python.failure import Failure
-from twisted.web.server import Request
+from twisted.web.iweb import IRequest

 from synapse.logging.context import make_deferred_yieldable, run_in_background
-from synapse.types import JsonDict
+from synapse.types import JsonDict, Requester
 from synapse.util.async_helpers import ObservableDeferred

 if TYPE_CHECKING:
@@ -41,53 +41,47 @@ P = ParamSpec("P")
 class HttpTransactionCache:
    def __init__(self, hs: "HomeServer"):
        self.hs = hs
-        self.auth = self.hs.get_auth()
        self.clock = self.hs.get_clock()
        # $txn_key: (ObservableDeferred<(res_code, res_json_body)>, timestamp)
        self.transactions: Dict[
-            str, Tuple[ObservableDeferred[Tuple[int, JsonDict]], int]
+            Hashable, Tuple[ObservableDeferred[Tuple[int, JsonDict]], int]
        ] = {}
        # Try to clean entries every 30 mins. This means entries will exist
        # for at *LEAST* 30 mins, and at *MOST* 60 mins.
        self.cleaner = self.clock.looping_call(self._cleanup, CLEANUP_PERIOD_MS)

-    def _get_transaction_key(self, request: Request) -> str:
+    def _get_transaction_key(self, request: IRequest, requester: Requester) -> Hashable:
        """A helper function which returns a transaction key that can be used
        with TransactionCache for idempotent requests.

        Idempotency is based on the returned key being the same for separate
        requests to the same endpoint. The key is formed from the HTTP request
-        path and the access_token for the requesting user.
+        path and attributes from the requester: the access_token_id for regular users,
+        the user ID for guest users, and the appservice ID for appservice users.

        Args:
-            request: The incoming request. Must contain an access_token.
+            request: The incoming request.
+            requester: The requester doing the request.
        Returns:
            A transaction key
        """
        assert request.path is not None
-        token = self.auth.get_access_token_from_request(request)
-        return request.path.decode("utf8") + "/" + token
+        path: str = request.path.decode("utf8")
+        if requester.is_guest:
+            assert requester.user is not None, "Guest requester must have a user ID set"
+            return (path, "guest", requester.user)
+        elif requester.app_service is not None:
+            return (path, "appservice", requester.app_service.id)
+        else:
+            assert (
+                requester.access_token_id is not None
+            ), "Requester must have an access_token_id"
+            return (path, "user", requester.access_token_id)

    def fetch_or_execute_request(
        self,
-        request: Request,
-        fn: Callable[P, Awaitable[Tuple[int, JsonDict]]],
-        *args: P.args,
-        **kwargs: P.kwargs,
-    ) -> Awaitable[Tuple[int, JsonDict]]:
-        """A helper function for fetch_or_execute which extracts
-        a transaction key from the given request.
-
-        See:
-            fetch_or_execute
-        """
-        return self.fetch_or_execute(
-            self._get_transaction_key(request), fn, *args, **kwargs
-        )
-
-    def fetch_or_execute(
-        self,
-        txn_key: str,
+        request: IRequest,
+        requester: Requester,
        fn: Callable[P, Awaitable[Tuple[int, JsonDict]]],
        *args: P.args,
        **kwargs: P.kwargs,
@@ -96,14 +90,15 @@ class HttpTransactionCache:
        to produce a response for this transaction.

        Args:
-            txn_key: A key to ensure idempotency should fetch_or_execute be
-                called again at a later point in time.
+            request:
+            requester:
            fn: A function which returns a tuple of (response_code, response_dict).
            *args: Arguments to pass to fn.
            **kwargs: Keyword arguments to pass to fn.
        Returns:
            Deferred which resolves to a tuple of (response_code, response_dict).
        """
+        txn_key = self._get_transaction_key(request, requester)
        if txn_key in self.transactions:
            observable = self.transactions[txn_key][0]
        else:
@@ -23,6 +23,8 @@ import functools
 import logging
 from typing import TYPE_CHECKING, Callable, Dict, List, Optional, TypeVar, cast

+from typing_extensions import TypeAlias
+
 from twisted.internet.interfaces import IOpenSSLContextFactory
 from twisted.internet.tcp import Port
 from twisted.web.iweb import IPolicyForHTTPS
@@ -142,10 +144,31 @@ if TYPE_CHECKING:
    from synapse.handlers.saml import SamlHandler


-T = TypeVar("T")
+# The annotation for `cache_in_self` used to be
+#     def (builder: Callable[["HomeServer"],T]) -> Callable[["HomeServer"],T]
+# which mypy was happy with.
+#
+# But PyCharm was confused by this. If `foo` was decorated by `@cache_in_self`, then
+# an expression like `hs.foo()`
+#
+# - would erroneously warn that we hadn't provided a `hs` argument to foo (PyCharm
+#   confused about boundmethods and unbound methods?), and
+# - would be considered to have type `Any`, making for a poor autocomplete and
+#   cross-referencing experience.
+#
+# Instead, use a typevar `F` to express that `@cache_in_self` returns exactly the
+# same type it receives. This isn't strictly true [*], but it's more than good
+# enough to keep PyCharm and mypy happy.
+#
+# [*]: (e.g. `builder` could be an object with a __call__ attribute rather than a
+#      types.FunctionType instance, whereas the return value is always a
+#      types.FunctionType instance.)
+
+T: TypeAlias = object
+F = TypeVar("F", bound=Callable[["HomeServer"], T])


-def cache_in_self(builder: Callable[["HomeServer"], T]) -> Callable[["HomeServer"], T]:
+def cache_in_self(builder: F) -> F:
    """Wraps a function called e.g. `get_foo`, checking if `self.foo` exists and
    returning if so. If not, calls the given function and sets `self.foo` to it.

@@ -183,7 +206,7 @@ def cache_in_self(builder: Callable[["HomeServer"], T]) -> Callable[["HomeServer

        return dep

-    return _get
+    return cast(F, _get)


 class HomeServer(metaclass=abc.ABCMeta):
@@ -16,6 +16,7 @@ import itertools
 import logging
 from typing import TYPE_CHECKING, Set

+from synapse.logging.context import nested_logging_context
 from synapse.storage.databases import Databases

 if TYPE_CHECKING:
@@ -33,8 +34,9 @@ class PurgeEventsStorageController:
    async def purge_room(self, room_id: str) -> None:
        """Deletes all record of a room"""

-        state_groups_to_delete = await self.stores.main.purge_room(room_id)
-        await self.stores.state.purge_room_state(room_id, state_groups_to_delete)
+        with nested_logging_context(room_id):
+            state_groups_to_delete = await self.stores.main.purge_room(room_id)
+            await self.stores.state.purge_room_state(room_id, state_groups_to_delete)

    async def purge_history(
        self, room_id: str, token: str, delete_local_events: bool
@@ -51,15 +53,17 @@ class PurgeEventsStorageController:
                (instead of just marking them as outliers and deleting their
                state groups).
        """
-        state_groups = await self.stores.main.purge_history(
-            room_id, token, delete_local_events
-        )
+        with nested_logging_context(room_id):
+            state_groups = await self.stores.main.purge_history(
+                room_id, token, delete_local_events
+            )

-        logger.info("[purge] finding state groups that can be deleted")
+            logger.info("[purge] finding state groups that can be deleted")
+            sg_to_delete = await self._find_unreferenced_groups(state_groups)

-        sg_to_delete = await self._find_unreferenced_groups(state_groups)
-
-        await self.stores.state.purge_unreferenced_state_groups(room_id, sg_to_delete)
+            await self.stores.state.purge_unreferenced_state_groups(
+                room_id, sg_to_delete
+            )

    async def _find_unreferenced_groups(self, state_groups: Set[int]) -> Set[int]:
        """Used when purging history to figure out which state groups can be
@@ -34,6 +34,7 @@ from typing import (
    Tuple,
    Type,
    TypeVar,
+    Union,
    cast,
    overload,
 )
@@ -100,6 +101,15 @@ UNIQUE_INDEX_BACKGROUND_UPDATES = {
 }


+class _PoolConnection(Connection):
+    """
+    A Connection from twisted.enterprise.adbapi.Connection.
+    """
+
+    def reconnect(self) -> None:
+        ...
+
+
 def make_pool(
    reactor: IReactorCore,
    db_config: DatabaseConnectionConfig,
@@ -856,7 +866,8 @@ class DatabasePool:
            try:
                with opentracing.start_active_span(f"db.{desc}"):
                    result = await self.runWithConnection(
-                        self.new_transaction,
+                        # mypy seems to have an issue with this, maybe a bug?
+                        self.new_transaction,  # type: ignore[arg-type]
                        desc,
                        after_callbacks,
                        async_after_callbacks,
@@ -892,7 +903,7 @@ class DatabasePool:

    async def runWithConnection(
        self,
-        func: Callable[..., R],
+        func: Callable[Concatenate[LoggingDatabaseConnection, P], R],
        *args: Any,
        db_autocommit: bool = False,
        isolation_level: Optional[int] = None,
@@ -926,7 +937,7 @@ class DatabasePool:

        start_time = monotonic_time()

-        def inner_func(conn, *args, **kwargs):
+        def inner_func(conn: _PoolConnection, *args: P.args, **kwargs: P.kwargs) -> R:
            # We shouldn't be in a transaction. If we are then something
            # somewhere hasn't committed after doing work. (This is likely only
            # possible during startup, as `run*` will ensure changes are
@@ -1019,7 +1030,7 @@ class DatabasePool:
        decoder: Optional[Callable[[Cursor], R]],
        query: str,
        *args: Any,
-    ) -> R:
+    ) -> Union[List[Tuple[Any, ...]], R]:
        """Runs a single query for a result set.

        Args:
@@ -1032,7 +1043,7 @@ class DatabasePool:
            The result of decoder(results)
        """

-        def interaction(txn):
+        def interaction(txn: LoggingTransaction) -> Union[List[Tuple[Any, ...]], R]:
            txn.execute(query, args)
            if decoder:
                return decoder(txn)
@@ -325,6 +325,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
        # We then run the same purge a second time without this isolation level to
        # purge any of those rows which were added during the first.

+        logger.info("[purge] Starting initial main purge of [1/2]")
        state_groups_to_delete = await self.db_pool.runInteraction(
            "purge_room",
            self._purge_room_txn,
@@ -332,6 +333,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
            isolation_level=IsolationLevel.READ_COMMITTED,
        )

+        logger.info("[purge] Starting secondary main purge of [2/2]")
        state_groups_to_delete.extend(
            await self.db_pool.runInteraction(
                "purge_room",
@@ -339,6 +341,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
                room_id=room_id,
            ),
        )
+        logger.info("[purge] Done with main purge")

        return state_groups_to_delete

@@ -376,7 +379,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
        )
        referenced_chain_id_tuples = list(txn)

-        logger.info("[purge] removing events from event_auth_chain_links")
+        logger.info("[purge] removing from event_auth_chain_links")
        txn.executemany(
            """
            DELETE FROM event_auth_chain_links WHERE
@@ -399,7 +402,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
            "rejections",
            "state_events",
        ):
-            logger.info("[purge] removing %s from %s", room_id, table)
+            logger.info("[purge] removing from %s", table)

            txn.execute(
                """
@@ -454,7 +457,7 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
            # happy
            "rooms",
        ):
-            logger.info("[purge] removing %s from %s", room_id, table)
+            logger.info("[purge] removing from %s", table)
            txn.execute("DELETE FROM %s WHERE room_id=?" % (table,), (room_id,))

        # Other tables we do NOT need to clear out:
@@ -486,6 +489,4 @@ class PurgeEventsStore(StateGroupWorkerStore, CacheInvalidationWorkerStore):
        #   that already exist.
        self._invalidate_cache_and_stream(txn, self.have_seen_event, (room_id,))

-        logger.info("[purge] done")
-
        return state_groups
@@ -224,7 +224,7 @@ class TransactionWorkerStore(CacheInvalidationWorkerStore):

        await self.db_pool.runInteraction(
            "set_destination_retry_timings",
-            self._set_destination_retry_timings_native,
+            self._set_destination_retry_timings_txn,
            destination,
            failure_ts,
            retry_last_ts,
@@ -232,7 +232,7 @@ class TransactionWorkerStore(CacheInvalidationWorkerStore):
            db_autocommit=True,  # Safe as it's a single upsert
        )

-    def _set_destination_retry_timings_native(
+    def _set_destination_retry_timings_txn(
        self,
        txn: LoggingTransaction,
        destination: str,
@@ -266,58 +266,6 @@ class TransactionWorkerStore(CacheInvalidationWorkerStore):
            txn, self.get_destination_retry_timings, (destination,)
        )

-    def _set_destination_retry_timings_emulated(
-        self,
-        txn: LoggingTransaction,
-        destination: str,
-        failure_ts: Optional[int],
-        retry_last_ts: int,
-        retry_interval: int,
-    ) -> None:
-        self.database_engine.lock_table(txn, "destinations")
-
-        # We need to be careful here as the data may have changed from under us
-        # due to a worker setting the timings.
-
-        prev_row = self.db_pool.simple_select_one_txn(
-            txn,
-            table="destinations",
-            keyvalues={"destination": destination},
-            retcols=("failure_ts", "retry_last_ts", "retry_interval"),
-            allow_none=True,
-        )
-
-        if not prev_row:
-            self.db_pool.simple_insert_txn(
-                txn,
-                table="destinations",
-                values={
-                    "destination": destination,
-                    "failure_ts": failure_ts,
-                    "retry_last_ts": retry_last_ts,
-                    "retry_interval": retry_interval,
-                },
-            )
-        elif (
-            retry_interval == 0
-            or prev_row["retry_interval"] is None
-            or prev_row["retry_interval"] < retry_interval
-        ):
-            self.db_pool.simple_update_one_txn(
-                txn,
-                "destinations",
-                keyvalues={"destination": destination},
-                updatevalues={
-                    "failure_ts": failure_ts,
-                    "retry_last_ts": retry_last_ts,
-                    "retry_interval": retry_interval,
-                },
-            )
-
-        self._invalidate_cache_and_stream(
-            txn, self.get_destination_retry_timings, (destination,)
-        )
-
    async def store_destination_rooms_entries(
        self,
        destinations: Iterable[str],
@@ -805,12 +805,14 @@ class StateGroupDataStore(StateBackgroundUpdateStore, SQLBaseStore):
            state_groups_to_delete: State groups to delete
        """

+        logger.info("[purge] Starting state purge")
        await self.db_pool.runInteraction(
            "purge_room_state",
            self._purge_room_state_txn,
            room_id,
            state_groups_to_delete,
        )
+        logger.info("[purge] Done with state purge")

    def _purge_room_state_txn(
        self,
@@ -0,0 +1,52 @@
+/* Copyright 2023 The Matrix.org Foundation C.I.C
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *    http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+--- destinations
+COMMENT ON TABLE destinations IS
+    'Information about remote homeservers and the health of our connection to them.';
+
+COMMENT ON COLUMN destinations.destination IS 'server name of remote homeserver in question';
+
+COMMENT ON COLUMN destinations.last_successful_stream_ordering IS
+$$Stream ordering of the most recently successfully sent PDU to this server, sent through normal send (not e.g. backfill).
+In Catch-Up Mode, the original PDU persisted by us is represented here, even if we sent a later forward extremity in its stead.
+See `destination_rooms` for more information about catch-up.$$;
+
+COMMENT ON COLUMN destinations.retry_last_ts IS
+$$The last time we tried and failed to reach the remote server, in ms.
+This field is reset to `0` when we succeed in connecting again.$$;
+
+COMMENT ON COLUMN destinations.retry_interval IS
+$$How long, in milliseconds, to wait since the last time we tried to reach the remote server before trying again.
+This field is reset to `0` when we succeed in connecting again.$$;
+
+COMMENT ON COLUMN destinations.failure_ts IS
+$$The first time we tried and failed to reach the remote server, in ms.
+This field is reset to `NULL` when we succeed in connecting again.$$;
+
+
+
+--- destination_rooms
+COMMENT ON TABLE destination_rooms IS
+    'Information about transmission of PDUs in a given room to a given remote homeserver.';
+
+COMMENT ON COLUMN destination_rooms.destination IS 'server name of remote homeserver in question';
+
+COMMENT ON COLUMN destination_rooms.room_id IS 'room ID in question';
+
+COMMENT ON COLUMN destination_rooms.stream_ordering IS
+$$`stream_ordering` of the most recent PDU in this room that needs to be sent (by us) to this homeserver.
+This can only be pointing to our own PDU because we are only responsible for sending our own PDUs.$$;
@@ -210,8 +210,8 @@ class BlacklistingAgentTest(TestCase):
        """Apply the blacklisting agent and ensure it properly blocks connections to particular IPs."""
        agent = BlacklistingAgentWrapper(
            Agent(self.reactor),
-            ip_whitelist=self.ip_whitelist,
            ip_blacklist=self.ip_blacklist,
+            ip_whitelist=self.ip_whitelist,
        )

        # The unsafe IPs should be rejected.
@@ -228,14 +228,7 @@ class TestBulkPushRuleEvaluator(HomeserverTestCase):
        )
        return len(result) > 0

-    @override_config(
-        {
-            "experimental_features": {
-                "msc3952_intentional_mentions": True,
-                "msc3966_exact_event_property_contains": True,
-            }
-        }
-    )
+    @override_config({"experimental_features": {"msc3952_intentional_mentions": True}})
    def test_user_mentions(self) -> None:
        """Test the behavior of an event which includes invalid user mentions."""
        bulk_evaluator = BulkPushRuleEvaluator(self.hs)
@@ -331,14 +324,7 @@ class TestBulkPushRuleEvaluator(HomeserverTestCase):
            )
        )

-    @override_config(
-        {
-            "experimental_features": {
-                "msc3952_intentional_mentions": True,
-                "msc3966_exact_event_property_contains": True,
-            }
-        }
-    )
+    @override_config({"experimental_features": {"msc3952_intentional_mentions": True}})
    def test_room_mentions(self) -> None:
        """Test the behavior of an event which includes invalid room mentions."""
        bulk_evaluator = BulkPushRuleEvaluator(self.hs)
@@ -51,11 +51,7 @@ class FlattenDictTestCase(unittest.TestCase):

        # If a field has a dot in it, escape it.
        input = {"m.foo": {"b\\ar": "abc"}}
-        self.assertEqual({"m.foo.b\\ar": "abc"}, _flatten_dict(input))
-        self.assertEqual(
-            {"m\\.foo.b\\\\ar": "abc"},
-            _flatten_dict(input, msc3873_escape_event_match_key=True),
-        )
+        self.assertEqual({"m\\.foo.b\\\\ar": "abc"}, _flatten_dict(input))

    def test_non_string(self) -> None:
        """String, booleans, ints, nulls and list of those should be kept while other items are dropped."""
@@ -125,7 +121,7 @@ class FlattenDictTestCase(unittest.TestCase):
            "room_id": "!test:test",
            "sender": "@alice:test",
            "type": "m.room.message",
-            "content.org.matrix.msc1767.markup": [],
+            "content.org\\.matrix\\.msc1767\\.markup": [],
        }
        self.assertEqual(expected, _flatten_dict(event))

@@ -137,7 +133,7 @@ class FlattenDictTestCase(unittest.TestCase):
            "room_id": "!test:test",
            "sender": "@alice:test",
            "type": "m.room.message",
-            "content.org.matrix.msc1767.markup": [],
+            "content.org\\.matrix\\.msc1767\\.markup": [],
        }
        self.assertEqual(expected, _flatten_dict(event))

@@ -173,7 +169,6 @@ class PushRuleEvaluatorTestCase(unittest.TestCase):
            related_event_match_enabled=True,
            room_version_feature_flags=event.room_version.msc3931_push_features,
            msc3931_enabled=True,
-            msc3966_exact_event_property_contains=True,
        )

    def test_display_name(self) -> None:
@@ -526,7 +521,7 @@ class PushRuleEvaluatorTestCase(unittest.TestCase):
        """Check that exact_event_property_contains conditions work as expected."""

        condition = {
-            "kind": "org.matrix.msc3966.exact_event_property_contains",
+            "kind": "event_property_contains",
            "key": "content.value",
            "value": "foobaz",
        }
@@ -39,15 +39,23 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
        self.cache = HttpTransactionCache(self.hs)

        self.mock_http_response = (HTTPStatus.OK, {"result": "GOOD JOB!"})
-        self.mock_key = "foo"
+
+        # Here we make sure that we're setting all the fields that HttpTransactionCache
+        # uses to build the transaction key.
+        self.mock_request = Mock()
+        self.mock_request.path = b"/foo/bar"
+        self.mock_requester = Mock()
+        self.mock_requester.app_service = None
+        self.mock_requester.is_guest = False
+        self.mock_requester.access_token_id = 1234

    @defer.inlineCallbacks
    def test_executes_given_function(
        self,
    ) -> Generator["defer.Deferred[Any]", object, None]:
        cb = Mock(return_value=make_awaitable(self.mock_http_response))
-        res = yield self.cache.fetch_or_execute(
-            self.mock_key, cb, "some_arg", keyword="arg"
+        res = yield self.cache.fetch_or_execute_request(
+            self.mock_request, self.mock_requester, cb, "some_arg", keyword="arg"
        )
        cb.assert_called_once_with("some_arg", keyword="arg")
        self.assertEqual(res, self.mock_http_response)
@@ -58,8 +66,13 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
    ) -> Generator["defer.Deferred[Any]", object, None]:
        cb = Mock(return_value=make_awaitable(self.mock_http_response))
        for i in range(3):  # invoke multiple times
-            res = yield self.cache.fetch_or_execute(
-                self.mock_key, cb, "some_arg", keyword="arg", changing_args=i
+            res = yield self.cache.fetch_or_execute_request(
+                self.mock_request,
+                self.mock_requester,
+                cb,
+                "some_arg",
+                keyword="arg",
+                changing_args=i,
            )
            self.assertEqual(res, self.mock_http_response)
        # expect only a single call to do the work
@@ -77,7 +90,9 @@ class HttpTransactionCacheTestCase(unittest.TestCase):
        @defer.inlineCallbacks
        def test() -> Generator["defer.Deferred[Any]", object, None]:
            with LoggingContext("c") as c1:
-                res = yield self.cache.fetch_or_execute(self.mock_key, cb)
+                res = yield self.cache.fetch_or_execute_request(
+                    self.mock_request, self.mock_requester, cb
+                )
                self.assertIs(current_context(), c1)
                self.assertEqual(res, (1, {}))

@@ -106,12 +121,16 @@ class HttpTransactionCacheTestCase(unittest.TestCase):

        with LoggingContext("test") as test_context:
            try:
-                yield self.cache.fetch_or_execute(self.mock_key, cb)
+                yield self.cache.fetch_or_execute_request(
+                    self.mock_request, self.mock_requester, cb
+                )
            except Exception as e:
                self.assertEqual(e.args[0], "boo")
            self.assertIs(current_context(), test_context)

-            res = yield self.cache.fetch_or_execute(self.mock_key, cb)
+            res = yield self.cache.fetch_or_execute_request(
+                self.mock_request, self.mock_requester, cb
+            )
            self.assertEqual(res, self.mock_http_response)
            self.assertIs(current_context(), test_context)

@@ -134,29 +153,39 @@ class HttpTransactionCacheTestCase(unittest.TestCase):

        with LoggingContext("test") as test_context:
            try:
-                yield self.cache.fetch_or_execute(self.mock_key, cb)
+                yield self.cache.fetch_or_execute_request(
+                    self.mock_request, self.mock_requester, cb
+                )
            except Exception as e:
                self.assertEqual(e.args[0], "boo")
            self.assertIs(current_context(), test_context)

-            res = yield self.cache.fetch_or_execute(self.mock_key, cb)
+            res = yield self.cache.fetch_or_execute_request(
+                self.mock_request, self.mock_requester, cb
+            )
            self.assertEqual(res, self.mock_http_response)
            self.assertIs(current_context(), test_context)

    @defer.inlineCallbacks
    def test_cleans_up(self) -> Generator["defer.Deferred[Any]", object, None]:
        cb = Mock(return_value=make_awaitable(self.mock_http_response))
-        yield self.cache.fetch_or_execute(self.mock_key, cb, "an arg")
+        yield self.cache.fetch_or_execute_request(
+            self.mock_request, self.mock_requester, cb, "an arg"
+        )
        # should NOT have cleaned up yet
        self.clock.advance_time_msec(CLEANUP_PERIOD_MS / 2)

-        yield self.cache.fetch_or_execute(self.mock_key, cb, "an arg")
+        yield self.cache.fetch_or_execute_request(
+            self.mock_request, self.mock_requester, cb, "an arg"
+        )
        # still using cache
        cb.assert_called_once_with("an arg")

        self.clock.advance_time_msec(CLEANUP_PERIOD_MS)

-        yield self.cache.fetch_or_execute(self.mock_key, cb, "an arg")
+        yield self.cache.fetch_or_execute_request(
+            self.mock_request, self.mock_requester, cb, "an arg"
+        )
        # no longer using cache
        self.assertEqual(cb.call_count, 2)
        self.assertEqual(cb.call_args_list, [call("an arg"), call("an arg")])
Author	SHA1	Message	Date
Patrick Cloke	b4d5b0d697	Remove the TCP protocol implementation.	2023-03-15 14:31:26 -04:00
Patrick Cloke	93ee0bc2b3	Remove the unused DirectTcpReplicationClientFactory class.	2023-03-15 14:31:26 -04:00
Patrick Cloke	6a639cbc08	Require redis be enabled for workers.	2023-03-15 14:31:26 -04:00
Patrick Cloke	121fce7500	Enable running tests & release artifacts on merge queue. (#15244 )	2023-03-15 08:07:20 -04:00
reivilibre	63d87c08c8	Add schema comments about the `destinations` and `destination_rooms` tables. (#15247 )	2023-03-15 09:25:58 +00:00
reivilibre	d0fe417f5c	Remove unused store method `_set_destination_retry_timings_emulated`. (#15266 )	2023-03-14 17:32:46 +00:00
Mathieu Velten	de92fb6a28	Merge branch 'master' into develop	2023-03-14 17:43:26 +01:00
Jason Little	003a25ae5c	Additional functionality for declaring worker types in Complement (#14921 ) Co-authored-by: Olivier Wilkinson (reivilibre) <oliverw@matrix.org>	2023-03-14 16:29:33 +00:00
Patrick Cloke	e7b559d2ca	Avoid unneeded work if auto-join rooms aren't configured. (#15262 ) It is not necessary to reach out to the database to check some parameters if the auto-join rooms are not configured, or (in some cases) if auto-create rooms is not configured.	2023-03-14 08:18:49 -04:00
David Robertson	a1c9869394	Merge branch 'release-v1.79' into develop	2023-03-13 18:35:21 +00:00
dependabot[bot]	5e21e15f96	Bump cryptography from 39.0.1 to 39.0.2 (#15257 ) * Bump cryptography from 39.0.1 to 39.0.2 Bumps [cryptography](https://github.com/pyca/cryptography) from 39.0.1 to 39.0.2. - [Release notes](https://github.com/pyca/cryptography/releases) - [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst) - [Commits](https://github.com/pyca/cryptography/compare/39.0.1...39.0.2) --- updated-dependencies: - dependency-name: cryptography dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 14:12:03 +00:00
David Robertson	d4eba4409f	Install rust during Stage 0 of docker build (#15239 ) * Install rust during Stage 0 of docker build Thanks to @atomdmac for spotting the fix. Fixes #15179. * Changelog	2023-03-13 12:12:02 +00:00
dependabot[bot]	408f60540f	Bump hiredis from 2.2.1 to 2.2.2 (#15252 ) * Bump hiredis from 2.2.1 to 2.2.2 Bumps [hiredis](https://github.com/redis/hiredis-py) from 2.2.1 to 2.2.2. - [Release notes](https://github.com/redis/hiredis-py/releases) - [Changelog](https://github.com/redis/hiredis-py/blob/master/CHANGELOG.md) - [Commits](https://github.com/redis/hiredis-py/compare/v2.2.1...v2.2.2) --- updated-dependencies: - dependency-name: hiredis dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 10:28:32 +00:00
dependabot[bot]	023f215c68	Bump serde from 1.0.152 to 1.0.155 (#15253 ) * Bump serde from 1.0.152 to 1.0.155 Bumps [serde](https://github.com/serde-rs/serde) from 1.0.152 to 1.0.155. - [Release notes](https://github.com/serde-rs/serde/releases) - [Commits](https://github.com/serde-rs/serde/compare/v1.0.152...v1.0.155) --- updated-dependencies: - dependency-name: serde dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 10:28:24 +00:00
dependabot[bot]	f167b35de9	Bump pysaml2 from 7.2.1 to 7.3.1 (#15254 ) * Bump pysaml2 from 7.2.1 to 7.3.1 Bumps [pysaml2](https://github.com/IdentityPython/pysaml2) from 7.2.1 to 7.3.1. - [Release notes](https://github.com/IdentityPython/pysaml2/releases) - [Changelog](https://github.com/IdentityPython/pysaml2/blob/v7.3.1/CHANGELOG.md) - [Commits](https://github.com/IdentityPython/pysaml2/compare/v7.2.1...v7.3.1) --- updated-dependencies: - dependency-name: pysaml2 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 10:28:15 +00:00
dependabot[bot]	6326d744c9	Bump msgpack from 1.0.4 to 1.0.5 (#15255 ) * Bump msgpack from 1.0.4 to 1.0.5 Bumps [msgpack](https://github.com/msgpack/msgpack-python) from 1.0.4 to 1.0.5. - [Release notes](https://github.com/msgpack/msgpack-python/releases) - [Changelog](https://github.com/msgpack/msgpack-python/blob/main/ChangeLog.rst) - [Commits](https://github.com/msgpack/msgpack-python/compare/v1.0.4...v1.0.5) --- updated-dependencies: - dependency-name: msgpack dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 10:28:05 +00:00
dependabot[bot]	ff155f7891	Bump gitpython from 3.1.30 to 3.1.31 (#15256 ) * Bump gitpython from 3.1.30 to 3.1.31 Bumps [gitpython](https://github.com/gitpython-developers/GitPython) from 3.1.30 to 3.1.31. - [Release notes](https://github.com/gitpython-developers/GitPython/releases) - [Changelog](https://github.com/gitpython-developers/GitPython/blob/main/CHANGES) - [Commits](https://github.com/gitpython-developers/GitPython/compare/3.1.30...3.1.31) --- updated-dependencies: - dependency-name: gitpython dependency-type: direct:development update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com> * Changelog --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: GitHub Actions <github-actions[bot]@users.noreply.github.com>	2023-03-13 10:27:55 +00:00
David Robertson	ce54477f6f	Give PyCharm some help with `@cache_in_self` (#15238 ) * Give PyCharm some help with `@cache_in_self` * Changelog * Fix import for old python versions	2023-03-09 19:12:09 +00:00
Sean Quah	caf43c3d7c	Faster joins: Fix spurious errors on incremental sync (#15232 ) When pushing events in partial state rooms down incremental /sync, we try to find the `m.room.member` state event for their senders by digging through their auth events, so that we can present the membership to the client. Events usually have a membership event in their auth events, with the exception of the `m.room.create` event and a user's first join into the room. When implementing #13477, we took the case of a user's first join into account, but forgot to handle the `m.room.create` case. This change fixes that. Signed-off-by: Sean Quah <seanq@matrix.org>	2023-03-09 14:18:39 +00:00
Patrick Cloke	3d060eae6c	Add missing type hints to `synapse.storage.database`. (#15230 )	2023-03-09 07:10:09 -05:00
Patrick Cloke	e7c3832ba6	Pull in netaddr type hints. (#15231 ) And fix any issues from having those type hints.	2023-03-09 07:09:49 -05:00
Shay	be4ea209e8	Add topic and name events to group of events that are batch persisted when creating a room. (#15229 )	2023-03-08 19:27:20 -08:00
Patrick Cloke	88efc75bab	Include the room ID in more purge room log lines. (#15222 )	2023-03-08 20:08:56 +00:00
Patrick Cloke	f4fc83ac75	Add a missing endpoint to the workers documentation. (#15223 )	2023-03-08 07:51:34 -05:00
Shay	a368d30c1c	More speedups/fixes to creating batched events (#15195 )	2023-03-07 13:54:39 -08:00
Patrick Cloke	20ed8c926b	Stabilize support for MSC3873: disambuguated event push keys. (#15190 ) This removes the experimental configuration option and always escapes the push rule condition keys. Also escapes any (experimental) push rule condition keys in the base rules which contain dot in a field name.	2023-03-07 11:27:57 -05:00
Quentin Gliech	47bc84dd53	Pass the Requester down to the HttpTransactionCache. (#15200 )	2023-03-07 16:05:22 +00:00
Patrick Cloke	820f02b70b	Stabilize support for MSC3966: event_property_contains push condition. (#15187 ) This removes the configuration flag & updates the identifiers to use the stable version.	2023-03-07 10:06:02 -05:00
				`@@ -0,0 +1 @@`
				`Add additional functionality to declaring worker types when starting Complement in worker mode.`
				`@@ -0,0 +1 @@`
				Stabilise support for [MSC3966](https://github.com/matrix-org/matrix-spec-proposals/pull/3966): `event_property_contains` push condition.
				`@@ -0,0 +1 @@`
				`Implement [MSC3873](https://github.com/matrix-org/matrix-spec-proposals/pull/3873) to fix a long-standing bug where properties with dots were handled ambiguously in push rules.`
				`@@ -0,0 +1 @@`
				`Improve performance of creating and authenticating events.`
				`@@ -0,0 +1 @@`
				Make the `HttpTransactionCache` use the `Requester` in addition of the just the `Request` to build the transaction key.
				`@@ -0,0 +1 @@`
				`Add a missing endpoint to the workers documentation.`
				`@@ -0,0 +1 @@`
				`Add topic and name events to group of events that are batch persisted when creating a room.`
				`@@ -0,0 +1 @@`
				`Faster joins: Fix a bug introduced in Synapse 1.66 where spurious "Failed to find memberships ..." errors would be logged.`
				`@@ -0,0 +1 @@`
				Ensure the Dockerfile builds on platforms that don't have a `cryptography` wheel.