* Alerting: Fix duplicated silences in remote primary mode bug
* test that a new silence id returned by calling CreateSilence() on the internal Alertmanager is ignored
* Alerting: Implement GetStatus in the remote Alertmanager struct
* update tests
* fix tests, extract AlertmanagerConfig from PostableConfig
* get the remote AM config instead of the Grafana one from the remote AM
* pass grafana AM config in test
* return error in GetStatus instead of logging it (internal AM)
* Alerting: Implement SaveAndApplyConfiguration in the forked Alertmanager struct
* call SaveAndApplyConfig on the remote first, log errors for the internal
* add comments explaining why we ignore errors in the internal AM
* restore go.work.sum
* Alerting: Implement SaveAndApplyDefaultConfig in the forked Alertmanager (remote primary)
* log the error for the internal AM instead of returning it
* Alerting: Implement ApplyConfig for remote primary mode (forked AM)
* add TODO for saving the config hash in other config-related methods
* fix bad method receiver name (m -> am)
* tests
* add mutex
* remove sync loop
* Alerting: Send configuration and state to the remote Alertmanager on shutdown
* Alerting: Add a sync interval for ApplyConfig in remote secondary mode
* add routine to sync states and configs
* pass a cancellable context to syncRoutine(), remove tests for ApplyConfig, cache last config in memory
* extract logic to update config and state in the remote Alertmanager
* get latest config from the database
* avoid using separate goroutine for updating state and config
* clean up PR
* refactor, comments, tests
* update tests
* remove canceled context from calls to StopAndWait()
* create context with timeout and send config and state to remote Alertmanager
* update tests
* address code review comments
* Alerting: Add a sync interval for ApplyConfig in remote secondary mode
* add routine to sync states and configs
* pass a cancellable context to syncRoutine(), remove tests for ApplyConfig, cache last config in memory
* extract logic to update config and state in the remote Alertmanager
* get latest config from the database
* avoid using separate goroutine for updating state and config
* clean up PR
* refactor, comments, tests
* update tests
* add config struct for remote secondary forked Alertmanager
* use errgroups for sync operations
* use waitgroup instead of errgroup
* remove helper method to sync AMs
* check for errors instead of bool syncErr
* Alerting: Add a sync interval for ApplyConfig in remote secondary mode
* remove out of scope code
* remove parentheses after CleanUp for consistency in test comments
* Add comment to ApplyConfig
* Alerting: Add an empty Forked Alertmanager
* Alerting: Add methods for silences to the forked Alertmanager
* check for errors in tests
* make linter happy
* Alerting: Add methods for alerts to the forked Alertmanager
* Alerting: Add methods for receivers to the forked Alertmanager
* Alerting: Add TestTemplate method to the forked Alertmanager
* make linter happy
* separate into both forked AMs
* fix tests
* Alerting: Add lifecycle methods to the forked Alertmanager
* Alerting: Add an empty Forked Alertmanager
* Alerting: Add methods for silences to the forked Alertmanager
* check for errors in tests
* make linter happy
* Alerting: Add methods for alerts to the forked Alertmanager
* Alerting: Add methods for receivers to the forked Alertmanager
* Alerting: Add TestTemplate method to the forked Alertmanager
* make linter happy
* separate into both forked AMs
* fix tests
* Alerting: Add an empty Forked Alertmanager
* Alerting: Add methods for silences to the forked Alertmanager
* check for errors in tests
* make linter happy
* Alerting: Add methods for alerts to the forked Alertmanager
* Alerting: Add methods for receivers to the forked Alertmanager
* make linter happy
* separate into both forked AMs
* fix tests
* rename testErr -> expErr
* Alerting: Add an empty Forked Alertmanager
* Alerting: Add methods for silences to the forked Alertmanager
* check for errors in tests
* make linter happy
* Alerting: Add methods for alerts to the forked Alertmanager
* make linter happy
* separate into both forked AMs
* rename testErr -> expErr
* Alerting: Add an empty Forked Alertmanager
* Alerting: Add methods for silences to the forked Alertmanager
* check for errors in tests
* make linter happy
* make linter happy
* Alerting: Add methods for silences to the forked Alertmanager
Fayzal Ghantiwala
Santiago