unistore: add kv based storage backend (#107305)

* Add datastore

* too many slashes

* lint

* add metadata store

* simplify meta

* Add eventstore

* golint

* lint

* Add datastore

* too many slashes

* lint

* pr comments

* extract ParseKey

* readcloser

* remove get prefix

* use dedicated keys

* parsekey

* sameresource

* unrelated

* name

* renmae tests

* add key validation

* fix tests

* refactor a bit

* lint

* allow empty ns

* get keys instead of list

* rename the functions

* refactor yield candidate

* update test

* unistore: add LastResourceVersion to datastore

* lint

* use map string

* missing err check

* fix

* Add storage backend

* remove hasmore

* fix tests

* small refactor

* pre-alloc

* extract the folder

* lint

* refactor

* handle context canceled in ListHistory to pass the tests

* fix the resource test

* unistore: provide generic tests for the kv interface (#107443)

unistore: move the kv tests to the testing package

* Update pkg/storage/unified/resource/storage_backend_test.go

Co-authored-by: Peter Štibraný <pstibrany@gmail.com>

* address comments

* comments

* comments

* comments

* normalise the names and add helper method

* events comments

* rename function

---------

Co-authored-by: Peter Štibraný <pstibrany@gmail.com>

pkg/storage/unified/testing/storage_backend.go

@@ -55,10 +55,6 @@ func GenerateRandomNSPrefix() string {
 
 // RunStorageBackendTest runs the storage backend test suite
 func RunStorageBackendTest(t *testing.T, newBackend NewBackendFunc, opts *TestOptions) {
-	if testing.Short() {
-		t.Skip("skipping integration test")
-	}
-
 	if opts == nil {
 		opts = &TestOptions{}
 	}
@@ -987,10 +983,10 @@ func runTestIntegrationBackendCreateNewResource(t *testing.T, backend resource.S
 		Key: &resourcepb.ResourceKey{
 			Namespace: "default",
 			Group:     "test.grafana",
-			Resource:  "Test",
+			Resource:  "tests",
 			Name:      "test",
 		},
-		Value: []byte(`{"apiVersion":"test.grafana/v0alpha1","kind":"Test","metadata":{"name":"test","namespace":"default"}}`),
+		Value: []byte(`{"apiVersion":"test.grafana/v0alpha1","kind":"Test","metadata":{"name":"test","namespace":"default","uid":"test-uid-123"}}`),
 	}
 
 	response, err := server.Create(ctx, request)