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* Switch all references to github.com/containers/libpod -> podmanDaniel J Walsh2020-07-28
| | | | Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* events endpoint: fix panic and race conditionValentin Rothberg2020-07-20
| | | | | | | | | | | | | | | | | | | | | Fix a potential panic in the events endpoint when parsing the filters parameter. Values of the filters map might be empty, so we need to account for that instead of uncondtitionally accessing the first item. Also apply a similar for race conditions as done in commit f4a2d25c0fca: Fix a race that could cause read errors to be masked. Masking such errors is likely to report red herrings since users don't see that reading failed for some reasons but that a given event could not be found. Another race was the handler closing event channel, which could lead to two kinds of panics: double close, send to close channel. The backend takes care of that. However, make sure that the backend stops working in case the context has been cancelled. Fixes: #6899 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Remove all instances of named return "err" from LibpodMatthew Heon2020-07-09
| | | | | | | | | | | | | | | | | This was inspired by https://github.com/cri-o/cri-o/pull/3934 and much of the logic for it is contained there. However, in brief, a named return called "err" can cause lots of code confusion and encourages using the wrong err variable in defer statements, which can make them work incorrectly. Using a separate name which is not used elsewhere makes it very clear what the defer should be doing. As part of this, remove a large number of named returns that were not used anywhere. Most of them were once needed, but are no longer necessary after previous refactors (but were accidentally retained). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* move go module to v2Valentin Rothberg2020-07-06
| | | | | | | | | | | | | | | With the advent of Podman 2.0.0 we crossed the magical barrier of go modules. While we were able to continue importing all packages inside of the project, the project could not be vendored anymore from the outside. Move the go module to new major version and change all imports to `github.com/containers/libpod/v2`. The renaming of the imports was done via `gomove` [1]. [1] https://github.com/KSubedi/gomove Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* Fix `system service` panic from early hangup in eventsMatthew Heon2020-07-02
| | | | | | | | | | | | We weren't actually halting the goroutine that sent events, so it would continue sending even when the channel closed (the most notable cause being early hangup - e.g. Control-c on a curl session). Use a context to cancel the events goroutine and stop sending events. Fixes #6805 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Poll on events for file readingBrent Baude2020-06-19
| | | | | | | | When multiple connections are monitoring events via the remote API, the inotify in the hpcloud library seems unable to consistently send events. Switching from inotify to poll seems to clear this up. Fixes: #6664 Signed-off-by: Brent Baude <bbaude@redhat.com>
* Turn on More lintersDaniel J Walsh2020-06-15
| | | | | | | | | - misspell - prealloc - unparam - nakedret Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
* auto updatesValentin Rothberg2020-03-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to auto-update containers running in systemd units as generated with `podman generate systemd --new`. `podman auto-update` looks up containers with a specified "io.containers.autoupdate" label (i.e., the auto-update policy). If the label is present and set to "image", Podman reaches out to the corresponding registry to check if the image has been updated. We consider an image to be updated if the digest in the local storage is different than the one of the remote image. If an image must be updated, Podman pulls it down and restarts the container. Note that the restarting sequence relies on systemd. At container-creation time, Podman looks up the "PODMAN_SYSTEMD_UNIT" environment variables and stores it verbatim in the container's label. This variable is now set by all systemd units generated by `podman-generate-systemd` and is set to `%n` (i.e., the name of systemd unit starting the container). This data is then being used in the auto-update sequence to instruct systemd (via DBUS) to restart the unit and hence to restart the container. Note that this implementation of auto-updates relies on systemd and requires a fully-qualified image reference to be used to create the container. This enforcement is necessary to know which image to actually check and pull. If we used an image ID, we would not know which image to check/pull anymore. Fixes: #3575 Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* update systemd & dbus dependenciesValentin Rothberg2020-03-10
| | | | | | | | Update the outdated systemd and dbus dependencies which are now provided as go modules. This will further tighten our dependencies and releases and pave the way for the upcoming auto-update feature. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* make lint: enable gocriticValentin Rothberg2020-01-13
| | | | | | | `gocritic` is a powerful linter that helps in preventing certain kinds of errors as well as enforcing a coding style. Signed-off-by: Valentin Rothberg <rothberg@redhat.com>
* codespell: spelling correctionsDmitry Smirnov2019-11-13
| | | | Signed-off-by: Dmitry Smirnov <onlyjob@member.fsf.org>
* events: make sure the write channel is always closedGiuseppe Scrivano2019-11-06
| | | | | | | | | in case of errors, the channel is not closed, blocking the reader indefinitely. Closes: https://bugzilla.redhat.com/show_bug.cgi?id=1767663 Signed-off-by: Giuseppe Scrivano <gscrivan@redhat.com>
* performance fix for podman events with large journaldsbaude2019-08-14
| | | | | | | | | in the case where the host has a large journald, iterating the journal without using a Match is very poor performance. this might be a temporary fix while we figure out why the systemd library does not seem to behave properly. Signed-off-by: baude <bbaude@redhat.com>
* Small optimization - only store exit code when nonzeroMatthew Heon2019-08-12
| | | | | | | JSON optimizes it out in that case anyways, so don't waste cycles doing an Itoa (and Atoi on the decode side). Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Fix container exit code with Journald backendMatthew Heon2019-08-12
| | | | | | | | | | We weren't actually storing this, so we'd lose the exit code for containers run with --rm or force-removed while running if the journald backend for events was in use. Fixes #3795 Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* systemd library conflict with seektail and addmatchbaude2019-08-06
| | | | | | | | | it looks like the core-os systemd library has some issue when using seektail and add match. this patch works around that shortcoming for the time being. Fixes: #3616 Signed-off-by: baude <bbaude@redhat.com>
* Merge pull request #3171 from QiWang19/events_jsonOpenShift Merge Robot2019-08-05
|\ | | | | podman events format json
| * podman events format jsonQi Wang2019-08-02
| | | | | | | | | | | | Enable podman events to format the output as jsonline Signed-off-by: Qi Wang <qiwan@redhat.com>
* | add eventlogger to infobaude2019-08-02
|/ | | | | | | to help with future debugging, we now display the type of event logger being used inside podman info -> host. Signed-off-by: baude <bbaude@redhat.com>
* Use "none" instead of "null" for the null eventerMatthew Heon2019-08-01
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* System events are valid, don't error on themMatthew Heon2019-07-31
| | | | | | The logfile driver was not aware that system events existed. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Expose Null eventer and allow its use in the Podman CLIMatthew Heon2019-07-31
| | | | | | | | We need this specifically for tests, but others may find it useful if they don't explicitly need events and don't want the performance implications of using them. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add a flag to set events logger typeMatthew Heon2019-07-31
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* golangci-lint pass number 2baude2019-07-11
| | | | | | clean up and prepare to migrate to the golangci-linter Signed-off-by: baude <bbaude@redhat.com>
* get last container eventbaude2019-07-07
| | | | | | | | an internal change in libpod will soon required the ability to lookup the last container event using the continer name or id and the type of event. this pr is in preperation for that need. Signed-off-by: baude <bbaude@redhat.com>
* set default event logger based on build tagsbaude2019-05-14
| | | | | | | once the default event logger was removed from libpod.conf, we need to set the default based on whether the systemd build tag is used or not. Signed-off-by: baude <bbaude@redhat.com>
* Add `systemd` build tagSascha Grunert2019-05-13
| | | | | | | | | | | | If the systemd development files are not present on the system which builds podman, then `podman events` will error on runtime creation. Beside this, a warning will be printed when compiling podman. This commit mainly exists because projects which depend on libpod would not need the podman event support and therefore do not need to rely on the systemd headers. Signed-off-by: Sascha Grunert <sgrunert@suse.com>
* Fix 'restart' event in journaldMatthew Heon2019-05-03
| | | | | | | Ensure that we can decode the restart event with the new journald events. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add a restart event, and make one during restart policyMatthew Heon2019-05-03
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Do not hard fail on non-decodable eventsMatthew Heon2019-04-26
| | | | Signed-off-by: Matthew Heon <mheon@redhat.com>
* Add System event type and renumber, refresh eventsMatthew Heon2019-04-25
| | | | | | | Also, re-add locking to file eventer Write() to protect against concurrent events. Signed-off-by: Matthew Heon <mheon@redhat.com>
* journald event loggingbaude2019-04-24
| | | | | | | | | add the ability for podman to read and write events to journald instead of just a logfile. This can be controlled in libpod.conf with the `events_logger` attribute of `journald` or `file`. The default will be set to `journald`. Signed-off-by: baude <bbaude@redhat.com>
* Merge pull request #2801 from mheon/remove_wait_eventOpenShift Merge Robot2019-03-29
|\ | | | | Remove wait event
| * Remove wait eventMatthew Heon2019-03-29
| | | | | | | | | | | | | | It's not necessary to log an event for a read-only operation like wait. Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* | Add locking to ensure events file is concurrency-safeMatthew Heon2019-03-29
|/ | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add "died" eventbaude2019-03-25
| | | | | | | | | | We have a new event for container 'Exited' which has been renamed to 'died'. also removed the stream bool from the varlink endpoint for events because it can be determined by the varlink more value. Signed-off-by: baude <bbaude@redhat.com>
* Add event on container deathMatthew Heon2019-03-13
| | | | Signed-off-by: Matthew Heon <matthew.heon@pm.me>
* Add event logging to libpod, even display to podmanbaude2019-03-11
In lipod, we now log major events that occurr. These events can be displayed using the `podman events` command. Each event contains: * Type (container, image, volume, pod...) * Status (create, rm, stop, kill, ....) * Timestamp in RFC3339Nano format * Name (if applicable) * Image (if applicable) The format of the event and the varlink endpoint are to not be considered stable until cockpit has done its enablement. Signed-off-by: baude <bbaude@redhat.com>
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