refactor monitoring modules

Signed-off-by: huanggze <loganhuang@yunify.com>

pkg/apiserver/monitoring/monitoring.go

@@ -33,13 +33,13 @@ func MonitorPod(request *restful.Request, response *restful.Response) {
 		var res *metrics.FormatedMetric
 		if !nullRule {
 			metricsStr := prometheus.SendMonitoringRequest(prometheus.PrometheusEndpoint, queryType, params)
-			res = metrics.ReformatJson(metricsStr, metricName, map[string]string{"pod_name": ""})
+			res = metrics.ReformatJson(metricsStr, metricName, map[string]string{metrics.MetricLevelPodName: ""})
 		}
 		response.WriteAsJson(res)
 
 	} else {
 		// multiple
-		rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelPod)
+		rawMetrics := metrics.GetPodLevelMetrics(requestParams)
 		// sorting
 		sortedMetrics, maxMetricCount := metrics.Sort(requestParams.SortMetricName, requestParams.SortType, rawMetrics)
 		// paging
@@ -52,7 +52,7 @@ func MonitorContainer(request *restful.Request, response *restful.Response) {
 	requestParams := prometheus.ParseMonitoringRequestParams(request)
 	metricName := requestParams.MetricsName
 	if requestParams.MetricsFilter != "" {
-		rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelContainer)
+		rawMetrics := metrics.GetContainerLevelMetrics(requestParams)
 		// sorting
 		sortedMetrics, maxMetricCount := metrics.Sort(requestParams.SortMetricName, requestParams.SortType, rawMetrics)
 		// paging
@@ -70,7 +70,7 @@ func MonitorContainer(request *restful.Request, response *restful.Response) {
 func MonitorWorkload(request *restful.Request, response *restful.Response) {
 	requestParams := prometheus.ParseMonitoringRequestParams(request)
 
-	rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelWorkload)
+	rawMetrics := metrics.GetWorkloadLevelMetrics(requestParams)
 
 	// sorting
 	sortedMetrics, maxMetricCount := metrics.Sort(requestParams.SortMetricName, requestParams.SortType, rawMetrics)
@@ -89,7 +89,7 @@ func MonitorAllWorkspaces(request *restful.Request, response *restful.Response)
 	tp := requestParams.Tp
 	if tp == "statistics" {
 		// merge multiple metric: all-devops, all-roles, all-projects...this api is designed for admin
-		res := metrics.MonitorAllWorkspacesStatistics()
+		res := metrics.GetAllWorkspacesStatistics()
 		response.WriteAsJson(res)
 
 	} else if tp == "rank" {
@@ -114,7 +114,7 @@ func MonitorOneWorkspace(request *restful.Request, response *restful.Response) {
 	tp := requestParams.Tp
 	if tp == "rank" {
 		// multiple
-		rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelWorkspace)
+		rawMetrics := metrics.GetWorkspaceLevelMetrics(requestParams)
 
 		// sorting
 		sortedMetrics, maxMetricCount := metrics.Sort(requestParams.SortMetricName, requestParams.SortType, rawMetrics)
@@ -130,7 +130,7 @@ func MonitorOneWorkspace(request *restful.Request, response *restful.Response) {
 		res := metrics.MonitorOneWorkspaceStatistics(wsName)
 		response.WriteAsJson(res)
 	} else {
-		res := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelWorkspace)
+		res := metrics.GetWorkspaceLevelMetrics(requestParams)
 		response.WriteAsJson(res)
 	}
 }
@@ -138,7 +138,7 @@ func MonitorOneWorkspace(request *restful.Request, response *restful.Response) {
 func MonitorNamespace(request *restful.Request, response *restful.Response) {
 	requestParams := prometheus.ParseMonitoringRequestParams(request)
 	// multiple
-	rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelNamespace)
+	rawMetrics := metrics.GetNamespaceLevelMetrics(requestParams)
 
 	// sorting
 	sortedMetrics, maxMetricCount := metrics.Sort(requestParams.SortMetricName, requestParams.SortType, rawMetrics)
@@ -155,12 +155,12 @@ func MonitorCluster(request *restful.Request, response *restful.Response) {
 		// single
 		queryType, params := metrics.AssembleClusterMetricRequestInfo(requestParams, metricName)
 		metricsStr := prometheus.SendMonitoringRequest(prometheus.PrometheusEndpoint, queryType, params)
-		res := metrics.ReformatJson(metricsStr, metricName, map[string]string{"cluster": "local"})
+		res := metrics.ReformatJson(metricsStr, metricName, map[string]string{metrics.MetricLevelCluster: "local"})
 
 		response.WriteAsJson(res)
 	} else {
 		// multiple
-		res := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelCluster)
+		res := metrics.GetClusterLevelMetrics(requestParams)
 		response.WriteAsJson(res)
 	}
 }
@@ -173,7 +173,7 @@ func MonitorNode(request *restful.Request, response *restful.Response) {
 		// single
 		queryType, params := metrics.AssembleNodeMetricRequestInfo(requestParams, metricName)
 		metricsStr := prometheus.SendMonitoringRequest(prometheus.PrometheusEndpoint, queryType, params)
-		res := metrics.ReformatJson(metricsStr, metricName, map[string]string{"node": ""})
+		res := metrics.ReformatJson(metricsStr, metricName, map[string]string{metrics.MetricLevelNode: ""})
 		// The raw node-exporter result doesn't include ip address information
 		// Thereby, append node ip address to .data.result[].metric
 
@@ -183,7 +183,7 @@ func MonitorNode(request *restful.Request, response *restful.Response) {
 		response.WriteAsJson(res)
 	} else {
 		// multiple
-		rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelNode)
+		rawMetrics := metrics.GetNodeLevelMetrics(requestParams)
 		nodeAddress := metrics.GetNodeAddressInfo()
 
 		for i := 0; i < len(rawMetrics.Results); i++ {
@@ -206,7 +206,7 @@ func MonitorComponent(request *restful.Request, response *restful.Response) {
 		requestParams.MetricsFilter = requestParams.ComponentName + "_.*"
 	}
 
-	rawMetrics := metrics.MonitorAllMetrics(requestParams, metrics.MetricLevelComponent)
+	rawMetrics := metrics.GetComponentLevelMetrics(requestParams)
 
 	response.WriteAsJson(rawMetrics)
 }

pkg/models/metrics/metrics.go

@@ -294,7 +294,7 @@ func AddNodeAddressMetric(nodeMetric *FormatedMetric, nodeAddress *map[string][]
 		metricDesc := nodeMetric.Data.Result[i][ResultItemMetric]
 		metricDescMap, ensure := metricDesc.(map[string]interface{})
 		if ensure {
-			if nodeId, exist := metricDescMap["resource_name"]; exist {
+			if nodeId, exist := metricDescMap[ResultItemMetricResourceName]; exist {
 				addr, exist := (*nodeAddress)[nodeId.(string)]
 				if exist {
 					metricDescMap["address"] = addr
@@ -307,7 +307,7 @@ func AddNodeAddressMetric(nodeMetric *FormatedMetric, nodeAddress *map[string][]
 func MonitorContainer(monitoringRequest *client.MonitoringRequestParams, metricName string) *FormatedMetric {
 	queryType, params := AssembleContainerMetricRequestInfo(monitoringRequest, metricName)
 	metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-	res := ReformatJson(metricsStr, metricName, map[string]string{"container_name": ""})
+	res := ReformatJson(metricsStr, metricName, map[string]string{MetricLevelContainerName: ""})
 	return res
 }
 
@@ -481,8 +481,7 @@ func collectWorkspaceMetric(monitoringRequest *client.MonitoringRequestParams, w
 
 			queryType, params := AssembleSpecificWorkspaceMetricRequestInfo(monitoringRequest, namespaceArray, metricName)
 			metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-			ch <- ReformatJson(metricsStr, metricName, map[string]string{"resource_name": ws}) // It's adding "resource_name" field
-
+			ch <- ReformatJson(metricsStr, metricName, map[string]string{ResultItemMetricResourceName: ws})
 			wg.Done()
 		}(metricName)
 	}
@@ -508,7 +507,7 @@ func collectWorkspaceMetric(monitoringRequest *client.MonitoringRequestParams, w
 	wsAllch <- &metricsArray
 }
 
-func MonitorAllMetrics(monitoringRequest *client.MonitoringRequestParams, resourceType string) *FormatedLevelMetric {
+func GetClusterLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
 	metricsFilter := monitoringRequest.MetricsFilter
 	if metricsFilter == "" {
 		metricsFilter = ".*"
@@ -517,275 +516,180 @@ func MonitorAllMetrics(monitoringRequest *client.MonitoringRequestParams, resour
 	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
 	var wg sync.WaitGroup
 
-	switch resourceType {
-	case MetricLevelCluster:
-		{
-			for _, metricName := range ClusterMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-						queryType, params := AssembleClusterMetricRequestInfo(monitoringRequest, metricName)
-						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-						ch <- ReformatJson(metricsStr, metricName, map[string]string{"cluster": "local"})
-						wg.Done()
-					}(metricName)
-				}
-			}
+	for _, metricName := range ClusterMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+				queryType, params := AssembleClusterMetricRequestInfo(monitoringRequest, metricName)
+				metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+				ch <- ReformatJson(metricsStr, metricName, map[string]string{MetricLevelCluster: "local"})
+				wg.Done()
+			}(metricName)
 		}
-	case MetricLevelNode:
-		{
-			for _, metricName := range NodeMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-						queryType, params := AssembleNodeMetricRequestInfo(monitoringRequest, metricName)
-						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-						ch <- ReformatJson(metricsStr, metricName, map[string]string{"node": ""})
-						wg.Done()
-					}(metricName)
-				}
-			}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
 		}
-	case MetricLevelWorkspace:
-		{
-			// a specific workspace's metrics
-			if monitoringRequest.WsName != "" {
-				namespaceArray, err := workspaces.WorkspaceNamespaces(monitoringRequest.WsName)
-				if err != nil {
-					glog.Errorln(err.Error())
-				}
-				namespaceArray = filterNamespace(monitoringRequest.ResourcesFilter, namespaceArray)
+	}
 
-				if monitoringRequest.Tp == "rank" {
-					for _, metricName := range NamespaceMetricsNames {
-						if metricName == MetricNameWorkspaceAllProjectCount {
-							continue
-						}
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelCluster,
+		Results:      metricsArray,
+	}
+}
 
-						matched, err := regexp.MatchString(metricsFilter, metricName)
-						if err != nil || !matched {
-							continue
-						}
+func GetNodeLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
 
-						wg.Add(1)
-						go func(metricName string) {
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
 
-							var chForOneMetric = make(chan *FormatedMetric, ChannelMaxCapacity)
-							var wgForOneMetric sync.WaitGroup
-
-							for _, ns := range namespaceArray {
-								wgForOneMetric.Add(1)
-								go func(metricName string, namespace string) {
-
-									queryType, params := AssembleNamespaceMetricRequestInfoByNamesapce(monitoringRequest, namespace, metricName)
-									metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-									chForOneMetric <- ReformatJson(metricsStr, metricName, map[string]string{"resource_name": namespace})
-									wgForOneMetric.Done()
-								}(metricName, ns)
-							}
-
-							wgForOneMetric.Wait()
-							close(chForOneMetric)
-
-							// ranking is for vector type result only
-							aggregatedResult := FormatedMetric{MetricName: metricName, Status: "success", Data: FormatedMetricData{Result: []map[string]interface{}{}, ResultType: ResultTypeVector}}
-
-							for oneMetric := range chForOneMetric {
-
-								if oneMetric != nil {
-
-									// wrapper layer 1: append .data.result[0]
-									if len(oneMetric.Data.Result) > 0 {
-										aggregatedResult.Data.Result = append(aggregatedResult.Data.Result, oneMetric.Data.Result[0])
-									}
-								}
-							}
-
-							ch <- &aggregatedResult
-							wg.Done()
-						}(metricName)
-
-					}
-
-				} else {
-
-					workspace := monitoringRequest.WsName
-
-					for _, metricName := range WorkspaceMetricsNames {
-
-						if metricName == MetricNameWorkspaceAllProjectCount {
-							continue
-						}
-
-						matched, err := regexp.MatchString(metricsFilter, metricName)
-						if err == nil && matched {
-							wg.Add(1)
-							go func(metricName string, workspace string) {
-								queryType, params := AssembleSpecificWorkspaceMetricRequestInfo(monitoringRequest, namespaceArray, metricName)
-								metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-								ch <- ReformatJson(metricsStr, metricName, map[string]string{"resource_name": workspace})
-								wg.Done()
-							}(metricName, workspace)
-						}
-					}
-				}
-			} else {
-				// sum all workspaces
-
-				for _, metricName := range WorkspaceMetricsNames {
-					matched, err := regexp.MatchString(metricsFilter, metricName)
-					if err == nil && matched {
-
-						wg.Add(1)
-
-						go func(metricName string) {
-							queryType, params := AssembleAllWorkspaceMetricRequestInfo(monitoringRequest, nil, metricName)
-							metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-							ch <- ReformatJson(metricsStr, metricName, map[string]string{"workspace": "workspaces"})
-
-							wg.Done()
-						}(metricName)
-					}
-				}
-			}
+	for _, metricName := range NodeMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+				queryType, params := AssembleNodeMetricRequestInfo(monitoringRequest, metricName)
+				metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+				ch <- ReformatJson(metricsStr, metricName, map[string]string{MetricLevelNode: ""})
+				wg.Done()
+			}(metricName)
 		}
-	case MetricLevelNamespace:
-		{
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelNode,
+		Results:      metricsArray,
+	}
+}
+
+func GetWorkspaceLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	// a specific workspace's metrics
+	if monitoringRequest.WsName != "" {
+		namespaceArray, err := workspaces.WorkspaceNamespaces(monitoringRequest.WsName)
+		if err != nil {
+			glog.Errorln(err.Error())
+		}
+		namespaceArray = filterNamespace(monitoringRequest.ResourcesFilter, namespaceArray)
+
+		if monitoringRequest.Tp == "rank" {
 			for _, metricName := range NamespaceMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-
-						queryType, params := AssembleNamespaceMetricRequestInfo(monitoringRequest, metricName)
-						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-
-						rawResult := ReformatJson(metricsStr, metricName, map[string]string{"namespace": ""})
-						ch <- rawResult
-
-						wg.Done()
-					}(metricName)
+				if metricName == MetricNameWorkspaceAllProjectCount {
+					continue
 				}
-			}
-		}
-	case MetricLevelWorkload:
-		{
-			if monitoringRequest.WorkloadName == "" {
-				for _, metricName := range WorkloadMetricsNames {
-					matched, err := regexp.MatchString(metricsFilter, metricName)
-					if err == nil && matched {
-						wg.Add(1)
-						go func(metricName string) {
-							queryType, params := AssembleAllWorkloadMetricRequestInfo(monitoringRequest, metricName)
+
+				matched, err := regexp.MatchString(metricsFilter, metricName)
+				if err != nil || !matched {
+					continue
+				}
+
+				wg.Add(1)
+				go func(metricName string) {
+
+					var chForOneMetric = make(chan *FormatedMetric, ChannelMaxCapacity)
+					var wgForOneMetric sync.WaitGroup
+
+					for _, ns := range namespaceArray {
+						wgForOneMetric.Add(1)
+						go func(metricName string, namespace string) {
+
+							queryType, params := AssembleNamespaceMetricRequestInfoByNamesapce(monitoringRequest, namespace, metricName)
 							metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-							reformattedResult := ReformatJson(metricsStr, metricName, map[string]string{"workload": ""})
-							// no need to append a null result
-							ch <- reformattedResult
-							wg.Done()
-						}(metricName)
+							chForOneMetric <- ReformatJson(metricsStr, metricName, map[string]string{ResultItemMetricResourceName: namespace})
+							wgForOneMetric.Done()
+						}(metricName, ns)
 					}
-				}
-			} else {
-				for _, metricName := range WorkloadMetricsNames {
-					bol, err := regexp.MatchString(metricsFilter, metricName)
-					if err == nil && bol {
-						wg.Add(1)
-						go func(metricName string) {
-							metricName = strings.TrimLeft(metricName, "workload_")
-							queryType, params, nullRule := AssembleSpecificWorkloadMetricRequestInfo(monitoringRequest, metricName)
-							if !nullRule {
-								metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-								fmtMetrics := ReformatJson(metricsStr, metricName, map[string]string{"pod_name": ""})
-								unifyMetricHistoryTimeRange(fmtMetrics)
-								ch <- fmtMetrics
-							}
-							wg.Done()
-						}(metricName)
-					}
-				}
-			}
-		}
-	case MetricLevelPod:
-		{
-			for _, metricName := range PodMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-						queryType, params, nullRule := AssemblePodMetricRequestInfo(monitoringRequest, metricName)
-						if !nullRule {
-							metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-							ch <- ReformatJson(metricsStr, metricName, map[string]string{"pod_name": ""})
-						} else {
-							ch <- nil
-						}
-						wg.Done()
-					}(metricName)
-				}
-			}
-		}
-	case MetricLevelContainer:
-		{
-			for _, metricName := range ContainerMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-						queryType, params := AssembleContainerMetricRequestInfo(monitoringRequest, metricName)
-						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
-						ch <- ReformatJson(metricsStr, metricName, map[string]string{"container_name": ""})
-						wg.Done()
-					}(metricName)
-				}
-			}
-		}
-	case MetricLevelComponent:
-		{
-			for _, metricName := range ComponentMetricsNames {
-				matched, err := regexp.MatchString(metricsFilter, metricName)
-				if err == nil && matched {
-					wg.Add(1)
-					go func(metricName string) {
-						queryType, params := AssembleComponentRequestInfo(monitoringRequest, metricName)
-						metricsStr := client.SendMonitoringRequest(client.SecondaryPrometheusEndpoint, queryType, params)
-						formattedJson := ReformatJson(metricsStr, metricName, map[string]string{"resource_name": monitoringRequest.ComponentName})
 
-						if metricName == "etcd_server_list" {
+					wgForOneMetric.Wait()
+					close(chForOneMetric)
 
-							nodeMap := make(map[string]string, 0)
+					// ranking is for vector type result only
+					aggregatedResult := FormatedMetric{MetricName: metricName, Status: MetricStatusSuccess, Data: FormatedMetricData{Result: []map[string]interface{}{}, ResultType: ResultTypeVector}}
 
-							nodeAddress := GetNodeAddressInfo()
-							for nodeName, nodeInfo := range *nodeAddress {
+					for oneMetric := range chForOneMetric {
 
-								var nodeIp string
-								for _, item := range nodeInfo {
-									if item.Type == v1.NodeInternalIP {
-										nodeIp = item.Address
-										break
-									}
-								}
+						if oneMetric != nil {
 
-								nodeMap[nodeIp] = nodeName
-							}
-
-							// add node_name label to metrics
-							for i := 0; i < len(formattedJson.Data.Result); i++ {
-								metricDesc := formattedJson.Data.Result[i][ResultItemMetric]
-								metricDescMap, ensure := metricDesc.(map[string]interface{})
-								if ensure {
-									if nodeIp, exist := metricDescMap[ResultItemMetricNodeIp]; exist {
-										metricDescMap[ResultItemMetricNodeName] = nodeMap[nodeIp.(string)]
-									}
-								}
+							// append .data.result[0]
+							if len(oneMetric.Data.Result) > 0 {
+								aggregatedResult.Data.Result = append(aggregatedResult.Data.Result, oneMetric.Data.Result[0])
 							}
 						}
+					}
 
-						ch <- formattedJson
-						wg.Done()
-					}(metricName)
+					ch <- &aggregatedResult
+					wg.Done()
+				}(metricName)
+
+			}
+
+		} else {
+
+			workspace := monitoringRequest.WsName
+
+			for _, metricName := range WorkspaceMetricsNames {
+
+				if metricName == MetricNameWorkspaceAllProjectCount {
+					continue
 				}
+
+				matched, err := regexp.MatchString(metricsFilter, metricName)
+				if err == nil && matched {
+					wg.Add(1)
+					go func(metricName string, workspace string) {
+						queryType, params := AssembleSpecificWorkspaceMetricRequestInfo(monitoringRequest, namespaceArray, metricName)
+						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+						ch <- ReformatJson(metricsStr, metricName, map[string]string{ResultItemMetricResourceName: workspace})
+						wg.Done()
+					}(metricName, workspace)
+				}
+			}
+		}
+	} else {
+		// sum all workspaces
+		for _, metricName := range WorkspaceMetricsNames {
+			matched, err := regexp.MatchString(metricsFilter, metricName)
+			if err == nil && matched {
+
+				wg.Add(1)
+
+				go func(metricName string) {
+					queryType, params := AssembleAllWorkspaceMetricRequestInfo(monitoringRequest, nil, metricName)
+					metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+					ch <- ReformatJson(metricsStr, metricName, map[string]string{MetricLevelWorkspace: "workspaces"})
+
+					wg.Done()
+				}(metricName)
 			}
 		}
 	}
@@ -801,14 +705,270 @@ func MonitorAllMetrics(monitoringRequest *client.MonitoringRequestParams, resour
 		}
 	}
 
-	// wrapper layer 2:
 	return &FormatedLevelMetric{
-		MetricsLevel: resourceType,
+		MetricsLevel: MetricLevelWorkspace,
 		Results:      metricsArray,
 	}
 }
 
-func MonitorAllWorkspacesStatistics() *FormatedLevelMetric {
+func GetNamespaceLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	for _, metricName := range NamespaceMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+
+				queryType, params := AssembleNamespaceMetricRequestInfo(monitoringRequest, metricName)
+				metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+
+				rawResult := ReformatJson(metricsStr, metricName, map[string]string{MetricLevelNamespace: ""})
+				ch <- rawResult
+
+				wg.Done()
+			}(metricName)
+		}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelNamespace,
+		Results:      metricsArray,
+	}
+}
+
+func GetWorkloadLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	if monitoringRequest.WorkloadName == "" {
+		for _, metricName := range WorkloadMetricsNames {
+			matched, err := regexp.MatchString(metricsFilter, metricName)
+			if err == nil && matched {
+				wg.Add(1)
+				go func(metricName string) {
+					queryType, params := AssembleAllWorkloadMetricRequestInfo(monitoringRequest, metricName)
+					metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+					reformattedResult := ReformatJson(metricsStr, metricName, map[string]string{MetricLevelWorkload: ""})
+					// no need to append a null result
+					ch <- reformattedResult
+					wg.Done()
+				}(metricName)
+			}
+		}
+	} else {
+		for _, metricName := range WorkloadMetricsNames {
+			bol, err := regexp.MatchString(metricsFilter, metricName)
+			if err == nil && bol {
+				wg.Add(1)
+				go func(metricName string) {
+					metricName = strings.TrimLeft(metricName, "workload_")
+					queryType, params, nullRule := AssembleSpecificWorkloadMetricRequestInfo(monitoringRequest, metricName)
+					if !nullRule {
+						metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+						fmtMetrics := ReformatJson(metricsStr, metricName, map[string]string{MetricLevelPodName: ""})
+						unifyMetricHistoryTimeRange(fmtMetrics)
+						ch <- fmtMetrics
+					}
+					wg.Done()
+				}(metricName)
+			}
+		}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelWorkload,
+		Results:      metricsArray,
+	}
+}
+
+func GetPodLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	for _, metricName := range PodMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+				queryType, params, nullRule := AssemblePodMetricRequestInfo(monitoringRequest, metricName)
+				if !nullRule {
+					metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+					ch <- ReformatJson(metricsStr, metricName, map[string]string{MetricLevelPodName: ""})
+				} else {
+					ch <- nil
+				}
+				wg.Done()
+			}(metricName)
+		}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelPod,
+		Results:      metricsArray,
+	}
+}
+
+func GetContainerLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	for _, metricName := range ContainerMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+				queryType, params := AssembleContainerMetricRequestInfo(monitoringRequest, metricName)
+				metricsStr := client.SendMonitoringRequest(client.PrometheusEndpoint, queryType, params)
+				ch <- ReformatJson(metricsStr, metricName, map[string]string{MetricLevelContainerName: ""})
+				wg.Done()
+			}(metricName)
+		}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelContainer,
+		Results:      metricsArray,
+	}
+}
+
+func GetComponentLevelMetrics(monitoringRequest *client.MonitoringRequestParams) *FormatedLevelMetric {
+	metricsFilter := monitoringRequest.MetricsFilter
+	if metricsFilter == "" {
+		metricsFilter = ".*"
+	}
+
+	var ch = make(chan *FormatedMetric, ChannelMaxCapacity)
+	var wg sync.WaitGroup
+
+	for _, metricName := range ComponentMetricsNames {
+		matched, err := regexp.MatchString(metricsFilter, metricName)
+		if err == nil && matched {
+			wg.Add(1)
+			go func(metricName string) {
+				queryType, params := AssembleComponentRequestInfo(monitoringRequest, metricName)
+				metricsStr := client.SendMonitoringRequest(client.SecondaryPrometheusEndpoint, queryType, params)
+				formattedJson := ReformatJson(metricsStr, metricName, map[string]string{ResultItemMetricResourceName: monitoringRequest.ComponentName})
+
+				if metricName == EtcdServerList {
+
+					nodeMap := make(map[string]string, 0)
+
+					nodeAddress := GetNodeAddressInfo()
+					for nodeName, nodeInfo := range *nodeAddress {
+
+						var nodeIp string
+						for _, item := range nodeInfo {
+							if item.Type == v1.NodeInternalIP {
+								nodeIp = item.Address
+								break
+							}
+						}
+
+						nodeMap[nodeIp] = nodeName
+					}
+
+					// add node_name label to metrics
+					for i := 0; i < len(formattedJson.Data.Result); i++ {
+						metricDesc := formattedJson.Data.Result[i][ResultItemMetric]
+						metricDescMap, ensure := metricDesc.(map[string]interface{})
+						if ensure {
+							if nodeIp, exist := metricDescMap[ResultItemMetricNodeIp]; exist {
+								metricDescMap[ResultItemMetricNodeName] = nodeMap[nodeIp.(string)]
+							}
+						}
+					}
+				}
+
+				ch <- formattedJson
+				wg.Done()
+			}(metricName)
+		}
+	}
+
+	wg.Wait()
+	close(ch)
+
+	var metricsArray []FormatedMetric
+
+	for oneMetric := range ch {
+		if oneMetric != nil {
+			metricsArray = append(metricsArray, *oneMetric)
+		}
+	}
+
+	return &FormatedLevelMetric{
+		MetricsLevel: MetricLevelComponent,
+		Results:      metricsArray,
+	}
+}
+
+func GetAllWorkspacesStatistics() *FormatedLevelMetric {
 
 	wg := sync.WaitGroup{}
 	var metricsArray []FormatedMetric

pkg/models/metrics/metricsruleconst.go

@@ -14,19 +14,20 @@ limitations under the License.
 package metrics
 
 const (
-	ResultTypeVector         = "vector"
-	ResultTypeMatrix         = "matrix"
-	MetricStatus             = "status"
-	MetricStatusError        = "error"
-	MetricStatusSuccess      = "success"
-	ResultItemMetric         = "metric"
-	ResultItemMetricResource = "resource"
-	ResultItemMetricNodeIp   = "node_ip"
-	ResultItemMetricNodeName = "node_name"
-	ResultItemValue          = "value"
-	ResultItemValues         = "values"
-	ResultSortTypeDesc       = "desc"
-	ResultSortTypeAsc        = "asc"
+	ResultTypeVector             = "vector"
+	ResultTypeMatrix             = "matrix"
+	MetricStatus                 = "status"
+	MetricStatusError            = "error"
+	MetricStatusSuccess          = "success"
+	ResultItemMetric             = "metric"
+	ResultItemMetricResource     = "resource"
+	ResultItemMetricResourceName = "resource_name"
+	ResultItemMetricNodeIp       = "node_ip"
+	ResultItemMetricNodeName     = "node_name"
+	ResultItemValue              = "value"
+	ResultItemValues             = "values"
+	ResultSortTypeDesc           = "desc"
+	ResultSortTypeAsc            = "asc"
 )
 
 const (
@@ -90,6 +91,12 @@ const (
 	WorkspaceJoinedKey = "label_kubesphere_io_workspace"
 )
 
+// The metrics need to include extra info out of prometheus
+// eg. add node name info to the etcd_server_list metric
+const (
+	EtcdServerList = "etcd_server_list"
+)
+
 type MetricMap map[string]string
 
 var ClusterMetricsNames = []string{

pkg/models/metrics/namespaces.go

@@ -41,14 +41,14 @@ func GetNamespacesWithMetrics(namespaces []*v1.Namespace) []*v1.Namespace {
 		MetricsFilter:   "namespace_cpu_usage|namespace_memory_usage_wo_cache|namespace_pod_count",
 	}
 
-	rawMetrics := MonitorAllMetrics(&params, MetricLevelNamespace)
+	rawMetrics := GetNamespaceLevelMetrics(&params)
 
 	for _, result := range rawMetrics.Results {
 		for _, data := range result.Data.Result {
-			metricDescMap, ok := data["metric"].(map[string]interface{})
+			metricDescMap, ok := data[ResultItemMetric].(map[string]interface{})
 			if ok {
-				if ns, exist := metricDescMap["resource_name"]; exist {
-					timeAndValue, ok := data["value"].([]interface{})
+				if ns, exist := metricDescMap[ResultItemMetricResourceName]; exist {
+					timeAndValue, ok := data[ResultItemValue].([]interface{})
 					if ok && len(timeAndValue) == 2 {
 						for i := 0; i < len(namespaces); i++ {
 							if namespaces[i].Name == ns {

pkg/models/metrics/util.go

@@ -89,8 +89,8 @@ func Sort(sortMetricName string, sortType string, rawMetrics *FormatedLevelMetri
 						v1, _ := strconv.ParseFloat(value1[len(value1)-1].(string), 64)
 						v2, _ := strconv.ParseFloat(value2[len(value2)-1].(string), 64)
 						if v1 == v2 {
-							resourceName1 := (*p)[ResultItemMetric].(map[string]interface{})["resource_name"]
-							resourceName2 := (*q)[ResultItemMetric].(map[string]interface{})["resource_name"]
+							resourceName1 := (*p)[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
+							resourceName2 := (*q)[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
 							return resourceName1.(string) < resourceName2.(string)
 						}
 
@@ -105,8 +105,8 @@ func Sort(sortMetricName string, sortType string, rawMetrics *FormatedLevelMetri
 						v2, _ := strconv.ParseFloat(value2[len(value2)-1].(string), 64)
 
 						if v1 == v2 {
-							resourceName1 := (*p)[ResultItemMetric].(map[string]interface{})["resource_name"]
-							resourceName2 := (*q)[ResultItemMetric].(map[string]interface{})["resource_name"]
+							resourceName1 := (*p)[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
+							resourceName2 := (*q)[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
 							return resourceName1.(string) > resourceName2.(string)
 						}
 
@@ -116,8 +116,8 @@ func Sort(sortMetricName string, sortType string, rawMetrics *FormatedLevelMetri
 
 				for _, r := range metricItem.Data.Result {
 					// record the ordering of resource_name to indexMap
-					// example: {"metric":{"resource_name": "Deployment:xxx"},"value":[1541142931.731,"3"]}
-					resourceName, exist := r[ResultItemMetric].(map[string]interface{})["resource_name"]
+					// example: {"metric":{ResultItemMetricResourceName: "Deployment:xxx"},"value":[1541142931.731,"3"]}
+					resourceName, exist := r[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
 					if exist {
 						if _, exist := indexMap[resourceName.(string)]; !exist {
 							indexMap[resourceName.(string)] = i
@@ -129,7 +129,7 @@ func Sort(sortMetricName string, sortType string, rawMetrics *FormatedLevelMetri
 
 			// iterator all metric to find max metricItems length
 			for _, r := range metricItem.Data.Result {
-				k, ok := r[ResultItemMetric].(map[string]interface{})["resource_name"]
+				k, ok := r[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
 				if ok {
 					currentResourceMap[k.(string)] = 1
 				}
@@ -158,7 +158,7 @@ func Sort(sortMetricName string, sortType string, rawMetrics *FormatedLevelMetri
 			sortedMetric := make([]map[string]interface{}, len(indexMap))
 			for j := 0; j < len(re.Data.Result); j++ {
 				r := re.Data.Result[j]
-				k, exist := r[ResultItemMetric].(map[string]interface{})["resource_name"]
+				k, exist := r[ResultItemMetric].(map[string]interface{})[ResultItemMetricResourceName]
 				if exist {
 					index, exist := indexMap[k.(string)]
 					if exist {
@@ -290,9 +290,9 @@ func ReformatJson(metric string, metricsName string, needAddParams map[string]st
 				for n := range needAddParams {
 					if v, ok := metricMap[n]; ok {
 						delete(metricMap, n)
-						metricMap["resource_name"] = v
+						metricMap[ResultItemMetricResourceName] = v
 					} else {
-						metricMap["resource_name"] = needAddParams[n]
+						metricMap[ResultItemMetricResourceName] = needAddParams[n]
 					}
 				}
 			}