41 lines
876 B
Go
41 lines
876 B
Go
package types
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import (
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"fmt"
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"strconv"
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)
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// TraceID is a 128 bit number internally stored as 2x uint64 (high & low).
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type TraceID struct {
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High uint64
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Low uint64
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}
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// TraceIDFromHex returns the TraceID from a Hex string.
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func TraceIDFromHex(h string) (t TraceID, err error) {
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if len(h) > 16 {
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if t.High, err = strconv.ParseUint(h[0:len(h)-16], 16, 64); err != nil {
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return
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}
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t.Low, err = strconv.ParseUint(h[len(h)-16:], 16, 64)
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return
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}
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t.Low, err = strconv.ParseUint(h, 16, 64)
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return
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}
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// ToHex outputs the 128-bit traceID as hex string.
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func (t TraceID) ToHex() string {
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if t.High == 0 {
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return strconv.FormatUint(t.Low, 16)
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}
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return fmt.Sprintf(
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"%016s%016s", strconv.FormatUint(t.High, 16), strconv.FormatUint(t.Low, 16),
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)
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}
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// Empty returns if TraceID has zero value
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func (t TraceID) Empty() bool {
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return t.Low == 0 && t.High == 0
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}
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