InfluxDB: Use database input for SQL configuration instead of metadata (#79579)

* introduce constants file

* update frontend to use database field

* use dbName field instead of metadata

* use secureGrpc

* betterer

pkg/tsdb/influxdb/fsql/fsql.go

@@ -98,17 +98,9 @@ func runnerFromDataSource(dsInfo *models.DatasourceInfo) (*runner, error) {
 	}
 
 	md := metadata.MD{}
-	for _, m := range dsInfo.Metadata {
-		for k, v := range m {
-			if _, ok := md[k]; ok {
-				return nil, fmt.Errorf("metadata: duplicate key: %s", k)
-			}
-			if k != "" {
-				md.Set(k, v)
-			}
-		}
+	if dsInfo.DbName != "" {
+		md.Set("database", dsInfo.DbName)
 	}
-
 	if dsInfo.Token != "" {
 		md.Set("Authorization", fmt.Sprintf("Bearer %s", dsInfo.Token))
 	}

pkg/tsdb/influxdb/fsql/fsql_test.go

@@ -63,11 +63,6 @@ func (suite *FSQLTestSuite) TestIntegration_QueryData() {
 				DbName:     "influxdb",
 				Version:    "test",
 				HTTPMode:   "proxy",
-				Metadata: []map[string]string{
-					{
-						"bucket": "bucket",
-					},
-				},
 				SecureGrpc: false,
 			},
 			backend.QueryDataRequest{

pkg/tsdb/influxdb/influxdb.go

@@ -81,7 +81,6 @@ func newInstanceSettings(httpClientProvider httpclient.Provider) datasource.Inst
 			TimeInterval:  jsonData.TimeInterval,
 			DefaultBucket: jsonData.DefaultBucket,
 			Organization:  jsonData.Organization,
-			Metadata:      jsonData.Metadata,
 			MaxSeries:     maxSeries,
 			SecureGrpc:    true,
 			Token:         settings.DecryptedSecureJSONData["token"],

pkg/tsdb/influxdb/models/datasource_info.go

@@ -18,8 +18,6 @@ type DatasourceInfo struct {
 	Organization  string `json:"organization"`
 	MaxSeries     int    `json:"maxSeries"`
 
-	// Flight SQL metadata
-	Metadata []map[string]string `json:"metadata"`
 	// FlightSQL grpc connection
 	SecureGrpc bool `json:"secureGrpc"`
 }