mysql additional decoupling steps (#86168)

* mysql additional decoupling steps

* updated snapshot test

pkg/tests/api/plugins/data/expectedListResp.json

@@ -1118,7 +1118,7 @@
       "keywords": null
     },
     "dependencies": {
-      "grafanaDependency": "",
+      "grafanaDependency": ">=10.4.0",
       "grafanaVersion": "*",
       "plugins": []
     },

pkg/tsdb/mysql/standalone/datasource.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"context"
+
+	"github.com/grafana/grafana-plugin-sdk-go/backend"
+	"github.com/grafana/grafana-plugin-sdk-go/backend/instancemgmt"
+	mysqlds "github.com/grafana/grafana/pkg/tsdb/mysql"
+)
+
+var (
+	_ backend.QueryDataHandler   = (*Datasource)(nil)
+	_ backend.CheckHealthHandler = (*Datasource)(nil)
+)
+
+func NewDatasource(context.Context, backend.DataSourceInstanceSettings) (instancemgmt.Instance, error) {
+	return &Datasource{
+		Service: mysqlds.ProvideService(),
+	}, nil
+}
+
+type Datasource struct {
+	Service *mysqlds.Service
+}
+
+func (d *Datasource) QueryData(ctx context.Context, req *backend.QueryDataRequest) (*backend.QueryDataResponse, error) {
+	return d.Service.QueryData(ctx, req)
+}
+
+func (d *Datasource) CheckHealth(ctx context.Context, req *backend.CheckHealthRequest) (*backend.CheckHealthResult, error) {
+	return d.Service.CheckHealth(ctx, req)
+}

pkg/tsdb/mysql/standalone/main.go

@@ -0,0 +1,23 @@
+package main
+
+import (
+	"os"
+
+	"github.com/grafana/grafana-plugin-sdk-go/backend/datasource"
+	"github.com/grafana/grafana-plugin-sdk-go/backend/log"
+)
+
+func main() {
+	// Start listening to requests sent from Grafana. This call is blocking so
+	// it won't finish until Grafana shuts down the process or the plugin choose
+	// to exit by itself using os.Exit. Manage automatically manages life cycle
+	// of datasource instances. It accepts datasource instance factory as first
+	// argument. This factory will be automatically called on incoming request
+	// from Grafana to create different instances of SampleDatasource (per datasource
+	// ID). When datasource configuration changed Dispose method will be called and
+	// new datasource instance created using NewSampleDatasource factory.
+	if err := datasource.Manage("mysql", NewDatasource, datasource.ManageOpts{}); err != nil {
+		log.DefaultLogger.Error(err.Error())
+		os.Exit(1)
+	}
+}

public/app/plugins/datasource/mysql/plugin.json

@@ -2,6 +2,7 @@
   "type": "datasource",
   "name": "MySQL",
   "id": "mysql",
+  "executable": "gpx_mysql",
   "category": "sql",
 
   "info": {
@@ -13,7 +14,11 @@
     "logos": {
       "small": "img/mysql_logo.svg",
       "large": "img/mysql_logo.svg"
-    }
+    },
+    "version": "%VERSION%"
+  },
+  "dependencies": {
+    "grafanaDependency": ">=10.4.0"
   },
 
   "alerting": true,