Add support for deployment name. (#13)

cmd/opencensus-operator/main.go

@@ -23,11 +23,12 @@ import (
 	"net/http"
 	"os"
 	"path"
+	"regexp"
 	"strconv"
 
-	"contrib.go.opencensus.io/resource/resourcekeys"
+	"go.opencensus.io/resource/resourcekeys"
 	"go.opencensus.io/resource"
-	kingpin "gopkg.in/alecthomas/kingpin.v2"
+	"gopkg.in/alecthomas/kingpin.v2"
 	admission "k8s.io/api/admission/v1beta1"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -181,6 +182,7 @@ type patchOperation struct {
 
 func createPatch(clusterName, namespace, podName string, pod *corev1.Pod) ([]byte, error) {
 	var patch []patchOperation
+	dName := ""
 
 	// If no pod name is known yet, we set it ourselves based on the generate name.
 	// The API server applies exactly the same logic otherwise.
@@ -197,6 +199,13 @@ func createPatch(clusterName, namespace, podName string, pod *corev1.Pod) ([]byt
 			return nil, errors.New("unable to configure pod without name or generate name")
 		}
 	}
+	// Extract deployment name from the pod name. Pod name is created using
+	// format: [deployment-name]-[Random-String-For-ReplicaSet]-[Random-String-For-Pod]
+	dRegex, _ := regexp.Compile(`^(.*)-([0-9a-zA-Z]*)-([0-9a-zA-Z]*)$`)
+	parts := dRegex.FindStringSubmatch(podName)
+	if len(parts) == 4 {
+		dName = parts[1]
+	}
 
 	// Set the OpenCensus resource environment variables for each container.
 	for i, c := range pod.Spec.Containers {
@@ -219,27 +228,31 @@ func createPatch(clusterName, namespace, podName string, pod *corev1.Pod) ([]byt
 				Path: path + "/env/-",
 				Value: corev1.EnvVar{
 					Name:  resource.EnvVarType,
-					Value: resourcekeys.K8STypeContainer,
+					Value: resourcekeys.ContainerType,
 				},
 			},
 			patchOperation{
 				Op:   "add",
 				Path: path + "/env/-",
 				Value: corev1.EnvVar{
 					Name:  resource.EnvVarLabels,
-					Value: buildResourceTags(clusterName, namespace, podName, c.Name),
+					Value: buildResourceTags(clusterName, namespace, podName, c.Name, dName),
 				},
 			},
 		)
 	}
 	return json.Marshal(patch)
 }
 
-func buildResourceTags(cluster, namespace, pod, container string) string {
-	return resource.EncodeLabels(map[string]string{
-		resourcekeys.K8SKeyClusterName:   cluster,
-		resourcekeys.K8SKeyNamespaceName: namespace,
-		resourcekeys.K8SKeyPodName:       pod,
-		resourcekeys.K8SKeyContainerName: container,
-	})
+func buildResourceTags(cluster, namespace, pod, container, dName string) string {
+	labels := map[string]string{
+		resourcekeys.K8SKeyClusterName:    cluster,
+		resourcekeys.K8SKeyNamespaceName:  namespace,
+		resourcekeys.K8SKeyPodName:        pod,
+		resourcekeys.ContainerKeyName:     container,
+	}
+	if dName != "" {
+		labels[resourcekeys.K8SKeyDeploymentName] = dName
+	}
+	return resource.EncodeLabels(labels)
 }

go.mod

@@ -1,17 +1,20 @@
 module contrib.go.opencensus.io/kubernetes-operator
 
 require (
-	contrib.go.opencensus.io/resource v0.0.0-20181029153415-93626b81974b
 	github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc // indirect
 	github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/gogo/protobuf v1.2.0 // indirect
 	github.com/google/gofuzz v0.0.0-20170612174753-24818f796faf // indirect
 	github.com/json-iterator/go v1.1.5 // indirect
 	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
 	github.com/modern-go/reflect2 v1.0.1 // indirect
-	go.opencensus.io v0.19.0
+	github.com/spf13/pflag v1.0.3 // indirect
+	github.com/stretchr/testify v1.3.0 // indirect
+	go.opencensus.io v0.22.1-0.20190619184131-df42942ad08f
 	gopkg.in/alecthomas/kingpin.v2 v2.2.6
 	gopkg.in/inf.v0 v0.9.1 // indirect
+	gopkg.in/yaml.v2 v2.2.2 // indirect
 	k8s.io/api v0.0.0-20190126160303-ccdd560a045f
 	k8s.io/apimachinery v0.0.0-20190126155707-0e6dcdd1b5ce
 	k8s.io/apiserver v0.0.0-20190126163141-df67e6c3edfa

go.sum

@@ -1,78 +1,79 @@
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-git.apache.org/thrift.git v0.0.0-20181218151757-9b75e4fe745a/go.mod h1:fPE2ZNJGynbRyZ4dJvy6G277gSllfV2HJqblrnkyeyg=
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