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91e58afa55
We get some useful features in later versions; update so as to not pin downstream consumers (extensions) to an older version.
83 lines
2.7 KiB
Go
83 lines
2.7 KiB
Go
// Copyright 2017, OpenCensus Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// Command stackdriver is an example program that collects data for
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// video size. Collected data is exported to
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// Stackdriver Monitoring.
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package main
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import (
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"context"
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"fmt"
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"log"
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"time"
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"go.opencensus.io/exporter/stackdriver"
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"go.opencensus.io/stats"
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"go.opencensus.io/stats/view"
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)
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// Create measures. The program will record measures for the size of
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// processed videos and the nubmer of videos marked as spam.
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var videoSize = stats.Int64("my.org/measure/video_size", "size of processed videos", stats.UnitBytes)
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func main() {
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ctx := context.Background()
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// Collected view data will be reported to Stackdriver Monitoring API
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// via the Stackdriver exporter.
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//
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// In order to use the Stackdriver exporter, enable Stackdriver Monitoring API
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// at https://console.cloud.google.com/apis/dashboard.
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//
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// Once API is enabled, you can use Google Application Default Credentials
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// to setup the authorization.
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// See https://developers.google.com/identity/protocols/application-default-credentials
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// for more details.
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exporter, err := stackdriver.NewExporter(stackdriver.Options{
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ProjectID: "project-id", // Google Cloud Console project ID.
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})
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if err != nil {
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log.Fatal(err)
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}
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view.RegisterExporter(exporter)
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// Set reporting period to report data at every second.
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view.SetReportingPeriod(1 * time.Second)
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// Create view to see the processed video size cumulatively.
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// Subscribe will allow view data to be exported.
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// Once no longer need, you can unsubscribe from the view.
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if err := view.Register(&view.View{
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Name: "my.org/views/video_size_cum",
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Description: "processed video size over time",
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Measure: videoSize,
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Aggregation: view.Distribution(0, 1<<16, 1<<32),
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}); err != nil {
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log.Fatalf("Cannot subscribe to the view: %v", err)
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}
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processVideo(ctx)
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// Wait for a duration longer than reporting duration to ensure the stats
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// library reports the collected data.
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fmt.Println("Wait longer than the reporting duration...")
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time.Sleep(1 * time.Minute)
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}
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func processVideo(ctx context.Context) {
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// Do some processing and record stats.
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stats.Record(ctx, videoSize.M(25648))
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}
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