28 lines
896 B
Go
28 lines
896 B
Go
// Package jsonlog provides helper functions to parse and print time (time.Time) as JSON.
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package jsonlog
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import (
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"errors"
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"time"
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)
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const (
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// RFC3339NanoFixed is our own version of RFC339Nano because we want one
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// that pads the nano seconds part with zeros to ensure
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// the timestamps are aligned in the logs.
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RFC3339NanoFixed = "2006-01-02T15:04:05.000000000Z07:00"
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// JSONFormat is the format used by FastMarshalJSON
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JSONFormat = `"` + time.RFC3339Nano + `"`
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)
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// FastTimeMarshalJSON avoids one of the extra allocations that
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// time.MarshalJSON is making.
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func FastTimeMarshalJSON(t time.Time) (string, error) {
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if y := t.Year(); y < 0 || y >= 10000 {
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// RFC 3339 is clear that years are 4 digits exactly.
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// See golang.org/issue/4556#c15 for more discussion.
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return "", errors.New("time.MarshalJSON: year outside of range [0,9999]")
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}
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return t.Format(JSONFormat), nil
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}
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