* Add limit query parameter
* Drop copy paste comment
* Extend history query limit to 30 days and 250 entries
* Fix history log entries ordering
* Update no history message, add empty history test
---------
Co-authored-by: Konrad Lalik <konrad.lalik@grafana.com>
* Remove private labels
* No longer index by instance labels
* Labels are now invariant, only build them once
* Remove bucketing since everything is in a single stream
* Refactor statesToStreams to only return a single unified log stream
* Don't query on labels that no longer exist
* Move selector logic to loki layer, genericize client to work in terms of straight logQL
* Add support for line-level label filters in query
* Combine existing selector tests for better parallelism
* Tests for logQL construction
* Underscore instead of dot for unwrapping labels in logql
* Encode with snappy, always
* JSON encoder type
* Headers
* Copy labels formatter from promtail
* Implement snappy-proto encoding
* Create encoder interface, test both encoders, choose snappy-proto by default
* Make encoder configurable at the LokiCfg level
* Export both encoders
* Touch up comment and tests
* Drop unnecessary conversions after move to plain strings to appease linter
* Create historian metrics and dependency inject
* Record counter for total number of state transitions logged
* Track write failures
* Track current number of active write goroutines
* Record histogram of how long it takes to write history data
* Don't copy the registerer
* Adjust naming of write failures metric
* Introduce WritesTotal to complement WritesFailedTotal
* Measure TransitionsFailedTotal to complement TransitionsTotal
* Rename all to state_history
* Remove redundant Total suffix
* Increment totals all the time, not just on success
* Drop ActiveWriteGoroutines
* Drop PersistDuration in favor of WriteDuration
* Drop unused gauge
* Make writes and writesFailed per org
* Add metric indicating backend and a spot for future metadata
* Drop _batch_ from names and update help
* Add metric for bytes written
* Better pairing of total + failure metric updates
* Few tweaks to wording and naming
* Record info metric during composition
* Create fakeRequester and simple happy path test using it
* Blocking test for the full historian and test for happy path metrics
* Add tests for failure case metrics
* Smoke test for full annotation persistence
* Create test for metrics on annotation persistence, both happy and failing paths
* Address linter complaints
* More linter complaints
* Remove unnecessary whitespace
* Consistency improvements to help texts
* Update tests to match new descs
* Loki backend and client depend on a requester
* Instrument all requests to loki using weaveworks TimedClient
* Construct collector in metrics package
* Use existing row struct instead of [2]string, add deserialization helper
* Replace Stream struct with stream struct which is exactly the same
* Drop unused status field
* Don't export queryRes and queryData
* Tests for custom marshalling
* Rename row fields to T and V for consistency with prometheus samples
* Rename row to sample
* Alerting: implement loki query for alert state history
* extract selector building
* add unit tests for selector creation
* backup
* give selectors their own type
* build dataframe
* add some tests
* small changes after manual testing
* use struct client
* golint
* more golint
* Make RuleUID optional for Loki implementation
* Drop initial assumption that we only have one series
* Pare down to three columns, fix timestamp overflows, improve failure cases in loki responses
* Embed structred log lines in the dataframe as objects rather than json strings
* Include state history label filter
* Remove dead code
---------
Co-authored-by: Alex Weaver <weaver.alex.d@gmail.com>
* Implement push endpoint
* Drop duplicated struct
* Genericize auth/tenant headers and improve logging in error case
* Flesh out the data model
* Drop dead code
* Drop log line entirely
* Drop unused arg
* Rename a few type manipulation functions
* Extract label keys as constants
* Improve logs when loki responds with error
* Inline lokiRepresentation function
