Add workflow type tag when emitting workflow completion metrics (cadence-workflow#3670)

Author: yycptt

service/history/execution/context.go

@@ -799,8 +799,9 @@ func (c *contextImpl) UpdateWorkflowExecutionWithNew(
 	// emit workflow completion stats if any
 	if currentWorkflow.ExecutionInfo.State == persistence.WorkflowStateCompleted {
 		if event, err := c.mutableState.GetCompletionEvent(ctx); err == nil {
+			workflowType := currentWorkflow.ExecutionInfo.WorkflowTypeName
 			taskList := currentWorkflow.ExecutionInfo.TaskList
-			emitWorkflowCompletionStats(c.metricsClient, domainName, taskList, event)
+			emitWorkflowCompletionStats(c.metricsClient, domainName, workflowType, taskList, event)
 		}
 	}
 

service/history/execution/context_util.go

@@ -110,6 +110,7 @@ func emitSessionUpdateStats(
 func emitWorkflowCompletionStats(
 	metricsClient metrics.Client,
 	domainName string,
+	workflowType string,
 	taskList string,
 	event *workflow.HistoryEvent,
 ) {
@@ -121,6 +122,7 @@ func emitWorkflowCompletionStats(
 	scope := metricsClient.Scope(
 		metrics.WorkflowCompletionStatsScope,
 		metrics.DomainTag(domainName),
+		metrics.WorkflowTypeTag(workflowType),
 		metrics.TaskListTag(taskList),
 	)