Revert: DataSource: Support config CRUD from apiservers (#106996) (#110342)

Revert "DataSource: Support config CRUD from apiservers (#106996)"

This reverts commit eda94a6434.

pkg/registry/apis/datasource/querier.go

@@ -4,10 +4,13 @@ import (
 	"context"
 
 	"github.com/grafana/grafana-plugin-sdk-go/backend"
+	"github.com/grafana/grafana/pkg/apimachinery/identity"
 	"github.com/grafana/grafana/pkg/apimachinery/utils"
+	"github.com/grafana/grafana/pkg/apis/datasource/v0alpha1"
 	"github.com/grafana/grafana/pkg/plugins"
 	"github.com/grafana/grafana/pkg/services/apiserver/endpoints/request"
 	"github.com/grafana/grafana/pkg/services/datasources"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
 type QuerierFactoryFunc func(ctx context.Context, ri utils.ResourceInfo, pj plugins.JSONData) (Querier, error)
@@ -45,6 +48,10 @@ type Querier interface {
 	Health(ctx context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error)
 	// Resource gets a resource plugin.
 	Resource(ctx context.Context, req *backend.CallResourceRequest, sender backend.CallResourceResponseSender) error
+	// Datasource gets all data source plugins (with elevated permissions).
+	Datasource(ctx context.Context, name string) (*v0alpha1.DataSourceConnection, error)
+	// Datasources lists all data sources (with elevated permissions).
+	Datasources(ctx context.Context) (*v0alpha1.DataSourceConnectionList, error)
 }
 
 type DefaultQuerier struct {
@@ -94,3 +101,47 @@ func (q *DefaultQuerier) Health(ctx context.Context, query *backend.CheckHealthR
 	}
 	return q.pluginClient.CheckHealth(ctx, query)
 }
+
+func (q *DefaultQuerier) Datasource(ctx context.Context, name string) (*v0alpha1.DataSourceConnection, error) {
+	info, err := request.NamespaceInfoFrom(ctx, true)
+	if err != nil {
+		return nil, err
+	}
+	user, err := identity.GetRequester(ctx)
+	if err != nil {
+		return nil, err
+	}
+	ds, err := q.dsCache.GetDatasourceByUID(ctx, name, user, false)
+	if err != nil {
+		return nil, err
+	}
+	return asConnection(ds, info.Value)
+}
+
+func (q *DefaultQuerier) Datasources(ctx context.Context) (*v0alpha1.DataSourceConnectionList, error) {
+	info, err := request.NamespaceInfoFrom(ctx, true)
+	if err != nil {
+		return nil, err
+	}
+
+	ds, err := q.dsService.GetDataSourcesByType(ctx, &datasources.GetDataSourcesByTypeQuery{
+		OrgID: info.OrgID,
+		Type:  q.pluginJSON.ID,
+	})
+	if err != nil {
+		return nil, err
+	}
+	return asConnectionList(q.connectionResourceInfo.TypeMeta(), ds, info.Value)
+}
+
+func asConnectionList(typeMeta metav1.TypeMeta, dss []*datasources.DataSource, ns string) (*v0alpha1.DataSourceConnectionList, error) {
+	result := &v0alpha1.DataSourceConnectionList{
+		Items: []v0alpha1.DataSourceConnection{},
+	}
+	for _, ds := range dss {
+		v, _ := asConnection(ds, ns)
+		result.Items = append(result.Items, *v)
+	}
+
+	return result, nil
+}