* Unified Storage: First iteration Dual Write Syncer
Signed-off-by: Maicon Costa <maiconscosta@gmail.com>
Co-authored-by: Leonor Oliveira <9090754+leonorfmartins@users.noreply.github.com>
Co-authored-by: Dan Cech <dcech@grafana.com>
* Compare results when reading/writing between unified_storage and legacy
* Always use name when comparing objects
* Compare on get method
* Update pkg/apiserver/rest/dualwriter.go
Co-authored-by: Dan Cech <dcech@grafana.com>
* Add new metric to count how many times we read from legacy in mode 2
* Move counter
* Add name in mode1
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Co-authored-by: Dan Cech <dcech@grafana.com>
* Pass prometheus registerer to the dual writer
* Fix tests
* Remove unused var
* Fix tests
* Uncomment test
* Remove leading line
* Fix tests. Reuse registerer if there's already one
* Lint
* Improve double registering logic
* Rebase main
* Also call storage on mode1. Add metrics
* Update comment
* Don't use compare function for now
* Remove very important space
* Finish add logging in mode2.
Also call US in mode1 in a non blocking way
* Improve code readability on modes 1 and 2
* Fix tests
* Rename vars
* Lint
* Return error from legacy write
* Renume useless defer
* [REVIEW] improvements
* Pass kind instead of name
* Use kind instead of name in metrics
* Only call latency metrics once
* Return error on writes to legacystore in mode1
* Move accesssor logic into the goroutine as well
