Secrets: Implement basic unified secret store service (#45804)

* wip: Implement kvstore for secrets

* wip: Refactor kvstore for secrets

* wip: Add format key function to secrets kvstore sql

* wip: Add migration for secrets kvstore

* Remove unused Key field from secrets kvstore

* Remove secret values from debug logs

* Integrate unified secrets with datasources

* Fix minor issues and tests for kvstore

* Create test service helper for secret store

* Remove encryption tests from datasources

* Move secret operations after datasources

* Fix datasource proxy tests

* Fix legacy data tests

* Add Name to all delete data source commands

* Implement decryption cache on sql secret store

* Fix minor issue with cache and tests

* Use secret type on secret store datasource operations

* Add comments to make create and update clear

* Rename itemFound variable to isFound

* Improve secret deletion and cache management

* Add base64 encoding to sql secret store

* Move secret retrieval to decrypted values function

* Refactor decrypt secure json data functions

* Fix expr tests

* Fix datasource tests

* Fix plugin proxy tests

* Fix query tests

* Fix metrics api tests

* Remove unused fake secrets service from query tests

* Add rename function to secret store

* Add check for error renaming secret

* Remove bus from tests to fix merge conflicts

* Add background secrets migration to datasources

* Get datasource secure json fields from secrets

* Move migration to secret store

* Revert "Move migration to secret store"

This reverts commit 7c3f872072.

* Add secret service to datasource service on tests

* Fix datasource tests

* Remove merge conflict on wire

* Add ctx to data source http transport on prometheus stats collector

* Add ctx to data source http transport on stats collector test

pkg/expr/service.go

@@ -7,7 +7,7 @@ import (
 	"github.com/grafana/grafana/pkg/components/simplejson"
 	"github.com/grafana/grafana/pkg/models"
 	"github.com/grafana/grafana/pkg/plugins"
-	"github.com/grafana/grafana/pkg/services/secrets"
+	"github.com/grafana/grafana/pkg/services/datasources"
 	"github.com/grafana/grafana/pkg/setting"
 )
 
@@ -36,16 +36,16 @@ func IsDataSource(uid string) bool {
 
 // Service is service representation for expression handling.
 type Service struct {
-	cfg            *setting.Cfg
-	dataService    backend.QueryDataHandler
-	secretsService secrets.Service
+	cfg               *setting.Cfg
+	dataService       backend.QueryDataHandler
+	dataSourceService datasources.DataSourceService
 }
 
-func ProvideService(cfg *setting.Cfg, pluginClient plugins.Client, secretsService secrets.Service) *Service {
+func ProvideService(cfg *setting.Cfg, pluginClient plugins.Client, dataSourceService datasources.DataSourceService) *Service {
 	return &Service{
-		cfg:            cfg,
-		dataService:    pluginClient,
-		secretsService: secretsService,
+		cfg:               cfg,
+		dataService:       pluginClient,
+		dataSourceService: dataSourceService,
 	}
 }