fix(k8sprocessor): fix metadata enrichment

Signed-off-by: Dominik Rosiek <[email protected]>

CHANGELOG.md

@@ -5,6 +5,15 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [v0.57.2-sumo-1]
+
+### Changed
+
+- fix(k8sprocessor): fix metadata enrichment [#724]
+
+[v0.57.2-sumo-1]: https://github.com/SumoLogic/sumologic-otel-collector/compare/v0.57.2-sumo-0...v0.57.2-sumo-1
+[#724]: https://github.com/SumoLogic/sumologic-otel-collector/pull/724
+
 ## [v0.57.2-sumo-0]
 
 This release deprecates the following features, which will be removed in `v0.60.0`:

pkg/processor/k8sprocessor/kube/client.go

@@ -490,24 +490,28 @@ func (c *WatchClient) addOrUpdatePod(pod *api_v1.Pod) {
 	c.m.Lock()
 	defer c.m.Unlock()
 
-	if pod.UID != "" {
-		c.Pods[PodIdentifier(pod.UID)] = newPod
-	}
-	if pod.Status.PodIP != "" {
-		// compare initial scheduled timestamp for existing pod and new pod with same IP
-		// and only replace old pod if scheduled time of new pod is newer? This should fix
-		// the case where scheduler has assigned the same IP to a new pod but update event for
-		// the old pod came in later.
-		if p, ok := c.Pods[PodIdentifier(pod.Status.PodIP)]; ok {
-			if p.StartTime != nil && pod.Status.StartTime.Before(p.StartTime) {
-				return
-			}
-		}
-		c.Pods[PodIdentifier(pod.Status.PodIP)] = newPod
+	identifiers := []PodIdentifier{
+		PodIdentifier(pod.UID),
+		PodIdentifier(pod.Status.PodIP),
 	}
-	// Use pod_name.namespace_name identifier
+
 	if newPod.Name != "" && newPod.Namespace != "" {
-		c.Pods[generatePodIDFromName(newPod)] = newPod
+		identifiers = append(identifiers, generatePodIDFromName(newPod))
+	}
+
+	for _, identifier := range identifiers {
+		if identifier != "" {
+			// compare initial scheduled timestamp for existing pod and new pod with same identifier
+			// and only replace old pod if scheduled time of new pod is newer or equal.
+			// This should fix the case where scheduler has assigned the same attributes (like IP address)
+			// to a new pod but update event for the old pod came in later.
+			if p, ok := c.Pods[identifier]; ok {
+				if p.StartTime != nil && pod.Status.StartTime.Before(p.StartTime) {
+					continue
+				}
+			}
+			c.Pods[identifier] = newPod
+		}
 	}
 }
 

pkg/processor/k8sprocessor/kube/client_test.go

@@ -239,22 +239,24 @@ func TestPodAddOutOfSync(t *testing.T) {
 
 	pod := &api_v1.Pod{}
 	pod.Name = "podA"
+	pod.Namespace = "namespace"
 	pod.Status.PodIP = "1.1.1.1"
 	startTime := meta_v1.NewTime(time.Now())
 	pod.Status.StartTime = &startTime
 	c.handlePodAdd(pod)
-	assert.Equal(t, len(c.Pods), 1)
+	assert.Equal(t, len(c.Pods), 2)
 	got := c.Pods["1.1.1.1"]
 	assert.Equal(t, got.Address, "1.1.1.1")
 	assert.Equal(t, got.Name, "podA")
 
 	pod2 := &api_v1.Pod{}
 	pod2.Name = "podB"
-	pod.Status.PodIP = "1.1.1.1"
+	pod2.Namespace = "namespace"
+	pod2.Status.PodIP = "1.1.1.1"
 	startTime2 := meta_v1.NewTime(time.Now().Add(-time.Second * 10))
-	pod.Status.StartTime = &startTime2
-	c.handlePodAdd(pod)
-	assert.Equal(t, len(c.Pods), 1)
+	pod2.Status.StartTime = &startTime2
+	c.handlePodAdd(pod2)
+	assert.Equal(t, len(c.Pods), 3)
 	got = c.Pods["1.1.1.1"]
 	assert.Equal(t, got.Address, "1.1.1.1")
 	assert.Equal(t, got.Name, "podA")