61 lines
986 B
Go
61 lines
986 B
Go
package containerd
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import (
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"encoding/json"
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"os"
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"path/filepath"
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"sync"
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"github.com/Sirupsen/logrus"
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)
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type entry struct {
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Event *Event `json:"event"`
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}
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func newJournal(path string) (*journal, error) {
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if err := os.MkdirAll(filepath.Dir(path), 0755); err != nil {
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return nil, err
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}
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f, err := os.OpenFile(path, os.O_CREATE|os.O_RDWR|os.O_APPEND, 0755)
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if err != nil {
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return nil, err
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}
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j := &journal{
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f: f,
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enc: json.NewEncoder(f),
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wc: make(chan *Event, 2048),
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}
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j.wg.Add(1)
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go j.start()
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return j, nil
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}
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type journal struct {
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f *os.File
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enc *json.Encoder
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wc chan *Event
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wg sync.WaitGroup
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}
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func (j *journal) start() {
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defer j.wg.Done()
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for e := range j.wc {
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et := &entry{
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Event: e,
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}
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if err := j.enc.Encode(et); err != nil {
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logrus.WithField("error", err).Error("write event to journal")
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}
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}
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}
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func (j *journal) write(e *Event) {
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j.wc <- e
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}
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func (j *journal) Close() error {
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close(j.wc)
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j.wg.Wait()
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return j.f.Close()
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}
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