feat(alerting): moved alerting models back to alerting package, models is more for storage dtos

pkg/tsdb/executor.go

@@ -0,0 +1,24 @@
+package tsdb
+
+type Executor interface {
+	Execute(queries QuerySlice, context *QueryContext) *BatchResult
+}
+
+var registry map[string]GetExecutorFn
+
+type GetExecutorFn func(dsInfo *DataSourceInfo) Executor
+
+func init() {
+	registry = make(map[string]GetExecutorFn)
+}
+
+func getExecutorFor(dsInfo *DataSourceInfo) Executor {
+	if fn, exists := registry[dsInfo.Type]; exists {
+		return fn(dsInfo)
+	}
+	return nil
+}
+
+func RegisterExecutor(dsType string, fn GetExecutorFn) {
+	registry[dsType] = fn
+}