Since Systemd v256 the Range header must not end with a trailing colon.
We relied on this undocumented feature when following logs, and the
frontend or CLI may still use it in requests. To fix the requests
failing with new Systemd version, intercept the header and fill in the
num_entries to maximum possible value, which avoids the journal-gatewayd
returning the response prematurely and also works on older Systemd
versions.
The journal-gatewayd would still return response if follow flag is used
along with num_entries, but this behavior is unchanged and would be
better fixed in the backend.
Link: https://github.com/systemd/systemd/issues/37172
* Add blockbuster library and find I/O from unit tests
* Fix lint and test issue
* Fixes from feedback
* Avoid modifying webapp object in executor
* Split su options validation and only validate timezone on change
When developing/testing in a Supervised environment, the
systemd-journal-gatewayd socket is actually available. Mock the
socket Path file to make the test independent of the pytest
environment.
If no cursor is specified and negative num_skip is used, we're pointing
one record back from the last one, so host logs always returned 101
lines as the default. This was also the case of the lines query argument
that used the number directly as num_skip. Instead of doing that, point
N-1 records to the back and then get N records. Handle 1 record and
invalid numbers silently to avoid the need for error handling in
unpractical edge cases.
Since headers are clumsy considering the Core proxy between the frontend
and Supervisor, add a way to adjust number of lines and verbose log
format using query parameters as well. If both query parameters and
headers are supplied, prefer the former, as it's more prominent when
reading through the request logs.
* Use Systemd Journal API for all logs endpoints in API
Replace all logs endpoints using container logs with wrapped
advanced_logs function, adding possibility to get logs from previous
boots and following the logs. Supervisor logs are an excetion where
Docker logs are still used - in case an exception is raised while
accessing the Systemd logs, they're used as fallback - otherwise we
wouldn't have an easy way to see what went wrong.
* Refactor testing of advanced logs endpoints to a common method
* Send error while fetching Supervisor logs to Sentry; minor cleanup
* Properly handle errors and use consistent content type in logs endpoints
* Replace api_process_custom with reworked api_process_raw per @mdegat01 suggestion
* Unsupported if wrong image used on virtualization
* Add generic-aarch64 as supported image
* Add virtualization field to API
* Change startup to setup in check
* Use Journal Export Format for host (advanced) logs
Add methods for handling Journal Export Format and use it for fetching
of host logs. This is foundation for colored streaming logs for other
endpoints as well.
* Make pylint happier - remove extra pass statement
* Rewrite journal gateway tests to mock ClientResponse's StreamReader
* Handle connection refused error when connecting to journal-gatewayd
* Use SYSTEMD_JOURNAL_GATEWAYD_SOCKET global path also for connection
* Use parsing algorithm suggested by @agners in review
* Fix timestamps in formatting, always use UTC for now
* Add tests for Accept header in host logs
* Apply suggestions from @agners
Co-authored-by: Stefan Agner <stefan@agner.ch>
* Bail out of parsing earlier if field is not in required fields
* Fix parsing issue discovered in the wild and add test case
* Make verbose formatter more tolerant
* Use some bytes' native functions for some minor optimizations
* Move MalformedBinaryEntryError to exceptions module, add test for it
---------
Co-authored-by: Stefan Agner <stefan@agner.ch>
* Add udisks2 dbus support
* assert mountpoints
* Comment
* Add reference links
* docstring
* fix type
* fix type
* add typing extensions as import
* isort
* additional changes
* Simplify classes and conversions, fix bugs
* More simplification
* Fix imports
* fix pip
* Add additional properties and fix requirements
* fix tests maybe
* Handle optionality of certain configuration details
* black
* connect to devices before returning them
* Refactor for latest dbus work
* Not .items
* fix mountpoints logic
* use variants
* Use variants for options too
* isort
* Switch to dbus fast
* Move import to parent
* Add some fixture data
* Add another fixture and reduce the block devices list
* Implement changes discussed with mike
* Add property fixtures
* update object path
* Fix get_block_devices call
* Tests and refactor to minimize dbus reconnects
* Call super init in DBusInterfaceProxy
* Fix permissions on introspection files
---------
Co-authored-by: Mike Degatano <michael.degatano@gmail.com>
* Add enhanced logging REST endpoints using systemd-journal-gatewayd
Add /host/logs/entries and /host/logs/{identifier}/entries to expose log
entries from systemd-journald running on the host. Use
systemd-journal-gatewayd which exposes the logs to the Supervisor via
Unix socket.
Current two query string parameters are allowed: "boot" and "follow".
The first will only return logs since last boot. The second will keep
the HTTP request open and send new log entries as they get added to the
systemd-journal.
* Allow Range header
Forward the Range header to systemd-journal-gatewayd. This allows to
select only a certain amount of log data. The Range header is a standard
header to select only partial amount of data. However, the "entries="
prefix is custom for systemd-journal-gatewayd, denoting that the numbers
following represent log entries (as opposed to bytes or other metrics).
* Avoid connecting if systemd-journal-gatewayd is not available
* Use path for all options
* Add pytests
* Address pylint issues
* Boot ID offsets and slug to identifier
* Fix tests
* API refactor from feedback
* fix tests and add identifiers
* stop isort and pylint fighting
* fix tests
* Update default log identifiers
* Only modify /host/logs endpoints
* Fix bad import
* Load log caches asynchronously at startup
* Allow task to complete in fixture
* Boot IDs and identifiers loaded on demand
* Add suggested identifiers
* Fix tests around boot ids
Co-authored-by: Mike Degatano <michael.degatano@gmail.com>
