Reverts element-hq/synapse#17448
We hit a bug when deploying with synctl:
```
Traceback (most recent call last):
File "/home/synapse/env-python311/bin/synctl", line 33, in <module>
sys.exit(load_entry_point('matrix-synapse', 'console_scripts', 'synctl')())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/bin/synctl", line 25, in importlib_load_entry_point
return next(matches).load()
^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/importlib/metadata/__init__.py", line 202, in load
module = import_module(match.group('module'))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/importlib/__init__.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 940, in exec_module
File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
File "/home/synapse/src/synapse/_scripts/synctl.py", line 37, in <module>
from synapse.config import find_config_files
File "/home/synapse/src/synapse/config/__init__.py", line 22, in <module>
from ._base import ConfigError, find_config_files
File "/home/synapse/src/synapse/config/_base.py", line 49, in <module>
import pkg_resources
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 3282, in <module>
@_call_aside
^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 3266, in _call_aside
f(*args, **kwargs)
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 3295, in _initialize_master_working_set
working_set = _declare_state('object', 'working_set', WorkingSet._build_master())
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 589, in _build_master
ws.require(__requires__)
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 926, in require
needed = self.resolve(parse_requirements(requirements))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 787, in resolve
dist = self._resolve_dist(
^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 816, in _resolve_dist
env = Environment(self.entries)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 1014, in __init__
self.scan(search_path)
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 1046, in scan
for dist in find_distributions(item):
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 2091, in find_on_path
yield from factory(fullpath)
^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 2183, in resolve_egg_link
return next(dist_groups, ())
^^^^^^^^^^^^^^^^^^^^^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 2179, in <genexpr>
resolved_paths = (
^
File "/home/synapse/env-python311/lib/python3.11/site-packages/pkg_resources/__init__.py", line 2167, in non_empty_lines
for line in _read_utf8_with_fallback(path).splitlines():
^^^^^^^^^^^^^^^^^^^^^^^^
NameError: name '_read_utf8_with_fallback' is not defined
```
Prior to this PR, remote downloads which did not provide a
`content-length` were decremented from the remote download ratelimiter
at the max allowable size, leading to excessive ratelimiting - see
https://github.com/element-hq/synapse/issues/17394.
This PR adds a linearizer to limit concurrent remote downloads to 6 per
IP address, and decrements remote downloads without a `content-length`
from the ratelimiter *after* the download is complete and the response
length is known.
Also adds logic to ensure that responses with a known length respect the
`max_download_size`.
This removes the `enable_media_repo` attribute on the server config in
favour of always using the `can_load_media_repo` in the media config.
This should avoid issues like in #17420 in the future
Add room subscriptions to Sliding Sync `/sync`
Based on
[MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575):
Sliding Sync
Currently, you can only subscribe to rooms you have had *any* membership
in before.
In the future, we will allow `world_readable` rooms to be subscribed to
without joining.
We can only fetch room types for rooms the server is in, so we need to
only filter rooms that we're joined to.
Also includes a perf fix to bulk fetch room types.
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This looks like a copy/paste error: the function doesn't reject
anything, but instead allows the action count to go through regardless.
The remainder of the function's documentation appears correct.
Added RHEL/Rocky install instructions (PyPI). Instructions cover
versions 8 and 9 which are the only supported ones - except for RHEL7
which is now on extended life cycle support phase.
Large part of the guide is for installing Python 3.11 or 3.12. RHEL8
ships with Python 3.6 and RHEL9 ships with 3.9. Newer Python versions
can be installed easily as they don't interfere with OS software that
still relies on the default Python version.
I was first planning to add prerequisites part to the prerequisites
section and then install instructions on the top of the page but that
section is for pre-built packages so it just didn't sound right. So I
just dumped everything to the PyPI section of the page. But suggestions
to change are welcome.
I also didn't combine these with Fedora section. I haven't tested those
packages on RHEL and Fedora ships with Python 3.12 out-of-box.
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We don't necessarily have `instance_name` for old events (before we
support multiple event persisters). We treat those as if the
`instance_name` was "master".
---------
Co-authored-by: Eric Eastwood <eric.eastwood@beta.gouv.fr>
`bump_stamp` corresponds to the `stream_ordering` of the latest `DEFAULT_BUMP_EVENT_TYPES` in the room. This helps clients sort more readily without them needing to pull in a bunch of the timeline to determine the last activity. `bump_event_types` is a thing because for example, we don't want display name changes to mark the room as unread and bump it to the top. For encrypted rooms, we just have to consider any activity as a bump because we can't see the content and the client has to figure it out for themselves.
Outside of Synapse, `bump_stamp` is just a free-form counter so other implementations could use `received_ts`or `origin_server_ts` (see the [*Security considerations* section in MSC3575 about the potential pitfalls of using `origin_server_ts`](https://github.com/matrix-org/matrix-spec-proposals/blob/kegan/sync-v3/proposals/3575-sync.md#security-considerations)). It doesn't have any guarantee about always going up. In the Synapse case, it could go down if an event was redacted/removed (or purged in cases of retention policies).
In the future, we could add `bump_event_types` as [MSC3575](https://github.com/matrix-org/matrix-spec-proposals/pull/3575) mentions if people need to customize the event types.
---
In the Sliding Sync proxy, a similar [`timestamp` field was added](https://github.com/matrix-org/sliding-sync/pull/247) for the same purpose but the name is not obvious what it pertains to or what it's for.
The `timestamp` field was also added to Ruma in https://github.com/ruma/ruma/pull/1622
