我正在尝试使用OpenCensus从Go应用程序将自定义指标发送到Stackdriver。
我遵循了guide,因此设置了视图和导出器:
import (
"context"
"contrib.go.opencensus.io/exporter/stackdriver"
"github.com/pkg/errors"
"go.opencensus.io/stats"
"go.opencensus.io/stats/view"
"time"
)
var (
apiRequestDurationMs = stats.Int64("api_request_duration", "API request duration in milliseconds", stats.UnitMilliseconds)
)
func NewMetricsExporter() (*stackdriver.Exporter, error) {
v := &view.View{
Name: "api_request_durations",
Measure: apiRequestDurationMs,
Description: "The distribution of request durations",
Aggregation: view.Distribution(0, 100, 200, 400, 1000, 2000, 4000),
}
if registerError := view.Register(v); registerError != nil {
return nil, errors.Wrapf(registerError, "failed to register request duration view")
}
exporter, exporterError := stackdriver.NewExporter(stackdriver.Options{ProjectID: "project-ID"})
if exporterError != nil {
return nil, errors.Wrapf(exporterError, "failed to create stackdriver exporter")
}
if startError := exporter.StartMetricsExporter(); startError != nil {
return nil, errors.Wrapf(startError, "failed to create stackdriver exporter")
}
return exporter, nil
}
然后我使用以下方式发送指标:
func RequestDuration(d time.Duration) {
stats.Record(context.Background(), apiRequestDurationMs.M(int64(d)))
}
但是我发送的自定义指标没有出现在Stackdriver的Metrics Explorer中。
我想念什么?
答案 0 :(得分:0)
问题出在用户指南中。 实际上,您必须注册出口商并设置报告间隔:
view.RegisterExporter(exporter)
view.SetReportingPeriod(60 * time.Second)