Define endpoint state

pkg/neg/metrics/neg_metrics_collector.go

@@ -27,11 +27,16 @@ import (
 
 type SyncerMetricsCollector interface {
 	UpdateSyncer(key negtypes.NegSyncerKey, result *negtypes.NegSyncResult)
+	SetSyncerEPMetrics(key negtypes.NegSyncerKey, epState *negtypes.SyncerEPStat)
 }
 
 type SyncerMetrics struct {
 	// syncerStatusMap tracks the status of each syncer
 	syncerStatusMap map[negtypes.NegSyncerKey]string
+	// syncerEndpointStateMap is a map between syncer and endpoint state counts
+	syncerEndpointStateMap map[negtypes.NegSyncerKey]negtypes.StateCountMap
+	// syncerEPSStateMap is a map between syncer and endpoint slice state counts
+	syncerEPSStateMap map[negtypes.NegSyncerKey]negtypes.StateCountMap
 	// mu avoid race conditions and ensure correctness of metrics
 	mu sync.Mutex
 	// duration between metrics exports
@@ -43,9 +48,11 @@ type SyncerMetrics struct {
 // NewNEGMetricsCollector initializes SyncerMetrics and starts a go routine to compute and export metrics periodically.
 func NewNegMetricsCollector(exportInterval time.Duration, logger klog.Logger) *SyncerMetrics {
 	return &SyncerMetrics{
-		syncerStatusMap: make(map[negtypes.NegSyncerKey]string),
-		metricsInterval: exportInterval,
-		logger:          logger.WithName("NegMetricsCollector"),
+		syncerStatusMap:        make(map[negtypes.NegSyncerKey]string),
+		syncerEndpointStateMap: make(map[negtypes.NegSyncerKey]negtypes.StateCountMap),
+		syncerEPSStateMap:      make(map[negtypes.NegSyncerKey]negtypes.StateCountMap),
+		metricsInterval:        exportInterval,
+		logger:                 logger.WithName("NegMetricsCollector"),
 	}
 }
 
@@ -82,3 +89,20 @@ func (sm *SyncerMetrics) UpdateSyncer(key negtypes.NegSyncerKey, syncResult *neg
 	}
 	sm.syncerStatusMap[key] = syncResult.Result
 }
+
+// SetSyncerEPMetrics update the endpoint count based on the endpointStat
+func (sm *SyncerMetrics) SetSyncerEPMetrics(key negtypes.NegSyncerKey, endpointStat *negtypes.SyncerEPStat) {
+	sm.mu.Lock()
+	defer sm.mu.Unlock()
+	if sm.syncerEndpointStateMap == nil {
+		sm.syncerEndpointStateMap = make(map[negtypes.NegSyncerKey]negtypes.StateCountMap)
+		sm.logger.V(3).Info("Syncer Metrics failed to initialize correctly, reinitializing syncerEPStateMap: %v", sm.syncerEndpointStateMap)
+	}
+	sm.syncerEndpointStateMap[key] = endpointStat.EndpointStateCount
+
+	if sm.syncerEPSStateMap == nil {
+		sm.syncerEPSStateMap = make(map[negtypes.NegSyncerKey]negtypes.StateCountMap)
+		sm.logger.V(3).Info("Syncer Metrics failed to initialize correctly, reinitializing syncerEPSStateMap: %v", sm.syncerEPSStateMap)
+	}
+	sm.syncerEPSStateMap[key] = endpointStat.EndpointSliceStateCount
+}

pkg/neg/types/endpoint_stat.go

@@ -0,0 +1,51 @@
+/*
+Copyright 2023 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+   http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package types
+
+type State string
+
+const (
+	EPMissingNodeName = State("EndpointMissingNodeName")
+	EPMissingPod      = State("EndpointMissingPod")
+	EPMissingZone     = State("EndpointMissingZone")
+	EPMissingField    = State("EndpointMissingField")
+	EPDuplicate       = State("EndpointDuplicate")
+	EPTotal           = State("EndpointTotal")
+
+	EPSWithMissingNodeName = State("EndpointsliceWithMissingNodeNameEP")
+	EPSWithMissingPod      = State("EndpointsliceWithMissingPodEP")
+	EPSWithMissingZone     = State("EndpointsliceWithMissingZoneEP")
+	EPSWithMissingField    = State("EndpointsliceWithMissingFieldEP")
+	EPSWithDuplicate       = State("EndpointsliceWithDuplicateEP")
+	EPSTotal               = State("EndpointsliceTotal")
+)
+
+// SyncerEPStat contains endpoint and endpointslice status related to a syncer
+type SyncerEPStat struct {
+	EndpointStateCount      StateCountMap
+	EndpointSliceStateCount StateCountMap
+}
+
+// StateCountMap collect the count of instances in different states
+type StateCountMap map[State]int
+
+func NewSyncerEPStat() *SyncerEPStat {
+	return &SyncerEPStat{
+		EndpointStateCount:      make(map[State]int),
+		EndpointSliceStateCount: make(map[State]int),
+	}
+}