mirror of
https://github.com/Luzifer/nginx-sso.git
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105 lines
3 KiB
Go
105 lines
3 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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package exporter // import "go.opencensus.io/examples/exporter"
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import (
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"encoding/hex"
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"fmt"
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"regexp"
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"time"
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"go.opencensus.io/stats/view"
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"go.opencensus.io/trace"
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)
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// indent these many spaces
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const indent = " "
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// reZero provides a simple way to detect an empty ID
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var reZero = regexp.MustCompile(`^0+$`)
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// PrintExporter is a stats and trace exporter that logs
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// the exported data to the console.
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//
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// The intent is help new users familiarize themselves with the
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// capabilities of opencensus.
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//
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// This should NOT be used for production workloads.
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type PrintExporter struct{}
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// ExportView logs the view data.
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func (e *PrintExporter) ExportView(vd *view.Data) {
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for _, row := range vd.Rows {
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fmt.Printf("%v %-45s", vd.End.Format("15:04:05"), vd.View.Name)
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switch v := row.Data.(type) {
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case *view.DistributionData:
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fmt.Printf("distribution: min=%.1f max=%.1f mean=%.1f", v.Min, v.Max, v.Mean)
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case *view.CountData:
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fmt.Printf("count: value=%v", v.Value)
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case *view.SumData:
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fmt.Printf("sum: value=%v", v.Value)
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case *view.LastValueData:
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fmt.Printf("last: value=%v", v.Value)
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}
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fmt.Println()
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for _, tag := range row.Tags {
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fmt.Printf("%v- %v=%v\n", indent, tag.Key.Name(), tag.Value)
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}
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}
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}
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// ExportSpan logs the trace span.
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func (e *PrintExporter) ExportSpan(vd *trace.SpanData) {
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var (
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traceID = hex.EncodeToString(vd.SpanContext.TraceID[:])
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spanID = hex.EncodeToString(vd.SpanContext.SpanID[:])
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parentSpanID = hex.EncodeToString(vd.ParentSpanID[:])
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)
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fmt.Println()
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fmt.Println("#----------------------------------------------")
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fmt.Println()
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fmt.Println("TraceID: ", traceID)
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fmt.Println("SpanID: ", spanID)
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if !reZero.MatchString(parentSpanID) {
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fmt.Println("ParentSpanID:", parentSpanID)
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}
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fmt.Println()
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fmt.Printf("Span: %v\n", vd.Name)
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fmt.Printf("Status: %v [%v]\n", vd.Status.Message, vd.Status.Code)
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fmt.Printf("Elapsed: %v\n", vd.EndTime.Sub(vd.StartTime).Round(time.Millisecond))
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if len(vd.Annotations) > 0 {
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fmt.Println()
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fmt.Println("Annotations:")
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for _, item := range vd.Annotations {
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fmt.Print(indent, item.Message)
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for k, v := range item.Attributes {
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fmt.Printf(" %v=%v", k, v)
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}
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fmt.Println()
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}
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}
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if len(vd.Attributes) > 0 {
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fmt.Println()
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fmt.Println("Attributes:")
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for k, v := range vd.Attributes {
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fmt.Printf("%v- %v=%v\n", indent, k, v)
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}
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}
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}
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