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90 lines
2.2 KiB
Go
90 lines
2.2 KiB
Go
// Copyright GoFrame gf Author(https://goframe.org). All Rights Reserved.
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//
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// This Source Code Form is subject to the terms of the MIT License.
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// If a copy of the MIT was not distributed with this file,
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// You can obtain one at https://github.com/gogf/gf.
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package main
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import (
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"context"
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"go.opentelemetry.io/otel/exporters/prometheus"
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"github.com/gogf/gf/v2/frame/g"
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"github.com/gogf/gf/v2/os/gctx"
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"github.com/gogf/gf/v2/os/gmetric"
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"github.com/gogf/gf/contrib/metric/otelmetric/v2"
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)
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const (
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instrument = "github.com/gogf/gf/example/metric/basic"
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instrumentVersion = "v1.0"
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)
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var (
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meter = gmetric.GetGlobalProvider().Meter(gmetric.MeterOption{
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Instrument: instrument,
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InstrumentVersion: instrumentVersion,
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Attributes: gmetric.Attributes{
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gmetric.NewAttribute("meter_label_1", 1),
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gmetric.NewAttribute("meter_label_2", 2),
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},
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})
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counter = meter.MustCounter(
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"goframe.metric.demo.counter",
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gmetric.MetricOption{
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Help: "This is a simple demo for Counter usage",
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Unit: "bytes",
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Attributes: gmetric.Attributes{
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gmetric.NewAttribute("const_attr_1", 1),
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},
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},
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)
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observableCounter = meter.MustObservableCounter(
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"goframe.metric.demo.observable_counter",
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gmetric.MetricOption{
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Help: "This is a simple demo for ObservableCounter usage",
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Unit: "%",
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Attributes: gmetric.Attributes{
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gmetric.NewAttribute("const_attr_2", 2),
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},
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},
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)
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)
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func main() {
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var ctx = gctx.New()
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// Callback for observable metrics.
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meter.MustRegisterCallback(func(ctx context.Context, obs gmetric.Observer) error {
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obs.Observe(observableCounter, 10)
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return nil
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}, observableCounter)
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// Prometheus exporter to export metrics as Prometheus format.
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exporter, err := prometheus.New(
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prometheus.WithoutCounterSuffixes(),
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prometheus.WithoutUnits(),
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)
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if err != nil {
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g.Log().Fatal(ctx, err)
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}
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// OpenTelemetry provider.
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provider := otelmetric.MustProvider(
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otelmetric.WithReader(exporter),
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otelmetric.WithBuiltInMetrics(),
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)
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provider.SetAsGlobal()
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defer provider.Shutdown(ctx)
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// Counter.
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counter.Inc(ctx)
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counter.Add(ctx, 10)
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// HTTP Server for metrics exporting.
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otelmetric.StartPrometheusMetricsServer(8000, "/metrics")
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}
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