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50 lines
1.3 KiB
50 lines
1.3 KiB
// Copyright GoFrame 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 tracing provides some utility functions for tracing functionality.
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package tracing
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import (
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"math"
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"time"
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"go.opentelemetry.io/otel/trace"
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"github.com/gogf/gf/v2/container/gtype"
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"github.com/gogf/gf/v2/encoding/gbinary"
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"github.com/gogf/gf/v2/util/grand"
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)
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var (
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randomInitSequence = int32(grand.Intn(math.MaxInt32))
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sequence = gtype.NewInt32(randomInitSequence)
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)
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// NewIDs creates and returns a new trace and span ID.
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func NewIDs() (traceID trace.TraceID, spanID trace.SpanID) {
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return NewTraceID(), NewSpanID()
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}
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// NewTraceID creates and returns a trace ID.
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func NewTraceID() (traceID trace.TraceID) {
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var (
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timestampNanoBytes = gbinary.EncodeInt64(time.Now().UnixNano())
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sequenceBytes = gbinary.EncodeInt32(sequence.Add(1))
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randomBytes = grand.B(4)
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)
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copy(traceID[:], timestampNanoBytes)
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copy(traceID[8:], sequenceBytes)
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copy(traceID[12:], randomBytes)
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return
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}
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// NewSpanID creates and returns a span ID.
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func NewSpanID() (spanID trace.SpanID) {
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copy(spanID[:], gbinary.EncodeInt64(time.Now().UnixNano()/1e3))
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copy(spanID[4:], grand.B(4))
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return
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}
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