| // Copyright 2018, OpenCensus 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 stackdriver_test |
| |
| import ( |
| "log" |
| "net/http" |
| "os" |
| |
| "cloud.google.com/go/compute/metadata" |
| "contrib.go.opencensus.io/exporter/stackdriver" |
| "contrib.go.opencensus.io/exporter/stackdriver/propagation" |
| "go.opencensus.io/plugin/ochttp" |
| "go.opencensus.io/stats/view" |
| "go.opencensus.io/trace" |
| "google.golang.org/genproto/googleapis/api/monitoredres" |
| ) |
| |
| func Example_defaults() { |
| exporter, err := stackdriver.NewExporter(stackdriver.Options{ProjectID: "google-project-id"}) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| // Export to Stackdriver Monitoring. |
| view.RegisterExporter(exporter) |
| |
| // Subscribe views to see stats in Stackdriver Monitoring. |
| if err := view.Register( |
| ochttp.ClientLatencyView, |
| ochttp.ClientResponseBytesView, |
| ); err != nil { |
| log.Fatal(err) |
| } |
| |
| // Export to Stackdriver Trace. |
| trace.RegisterExporter(exporter) |
| |
| // Automatically add a Stackdriver trace header to outgoing requests: |
| client := &http.Client{ |
| Transport: &ochttp.Transport{ |
| Propagation: &propagation.HTTPFormat{}, |
| }, |
| } |
| _ = client // use client |
| |
| // All outgoing requests from client will include a Stackdriver Trace header. |
| // See the ochttp package for how to handle incoming requests. |
| } |
| |
| func Example_gKE() { |
| |
| // This example shows how to set up a Stackdriver exporter suitable for |
| // monitoring a GKE container. |
| |
| instanceID, err := metadata.InstanceID() |
| if err != nil { |
| log.Println("Error getting instance ID:", err) |
| instanceID = "unknown" |
| } |
| zone, err := metadata.Zone() |
| if err != nil { |
| log.Println("Error getting zone:", err) |
| zone = "unknown" |
| } |
| |
| exporter, err := stackdriver.NewExporter(stackdriver.Options{ |
| ProjectID: "google-project-id", |
| // Set a MonitoredResource that represents a GKE container. |
| Resource: &monitoredres.MonitoredResource{ |
| Type: "gke_container", |
| Labels: map[string]string{ |
| "project_id": "google-project-id", |
| "cluster_name": "my-cluster-name", |
| "instance_id": instanceID, |
| "zone": zone, |
| |
| // See: https://kubernetes.io/docs/tasks/inject-data-application/environment-variable-expose-pod-information/ |
| "namespace_id": os.Getenv("MY_POD_NAMESPACE"), |
| "pod_id": os.Getenv("MY_POD_NAME"), |
| "container_name": os.Getenv("MY_CONTAINER_NAME"), |
| }, |
| }, |
| // Set DefaultMonitoringLabels to avoid getting the default "opencensus_task" |
| // label. For this to be valid, this exporter should be the only writer |
| // to the metrics against this gke_container MonitoredResource. In this case, |
| // it means you should only have one process writing to Stackdriver from this |
| // container. |
| DefaultMonitoringLabels: &stackdriver.Labels{}, |
| }) |
| if err != nil { |
| log.Fatal(err) |
| } |
| |
| // Register so that views are exported. |
| view.RegisterExporter(exporter) |
| } |