45 lines
847 B
Go
45 lines
847 B
Go
package jsonlog
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import (
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"encoding/json"
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"fmt"
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"io"
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"log"
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"time"
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)
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type JSONLog struct {
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Log string `json:"log,omitempty"`
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Stream string `json:"stream,omitempty"`
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Created time.Time `json:"time"`
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}
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func (jl *JSONLog) Format(format string) (string, error) {
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if format == "" {
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return jl.Log, nil
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}
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if format == "json" {
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m, err := json.Marshal(jl)
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return string(m), err
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}
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return fmt.Sprintf("[%s] %s", jl.Created.Format(format), jl.Log), nil
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}
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func WriteLog(src io.Reader, dst io.Writer, format string) error {
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dec := json.NewDecoder(src)
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for {
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l := &JSONLog{}
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if err := dec.Decode(l); err == io.EOF {
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return nil
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} else if err != nil {
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log.Printf("Error streaming logs: %s", err)
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return err
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}
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line, err := l.Format(format)
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if err != nil {
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return err
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}
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fmt.Fprintf(dst, "%s", line)
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}
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}
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