woodpecker/agent/updater.go
2016-05-23 14:35:58 -07:00

91 lines
2 KiB
Go

package agent
import (
"encoding/json"
"fmt"
"io"
"sync"
"time"
"github.com/Sirupsen/logrus"
"github.com/drone/drone/build"
"github.com/drone/drone/client"
"github.com/drone/drone/queue"
)
// UpdateFunc handles buid pipeline status updates.
type UpdateFunc func(*queue.Work)
// LoggerFunc handles buid pipeline logging updates.
type LoggerFunc func(*build.Line)
var NoopUpdateFunc = func(*queue.Work) {}
var TermLoggerFunc = func(line *build.Line) {
fmt.Println(line)
}
// NewClientUpdater returns an updater that sends updated build details
// to the drone server.
func NewClientUpdater(client client.Client) UpdateFunc {
return func(w *queue.Work) {
for {
err := client.Push(w)
if err == nil {
return
}
logrus.Errorf("Error updating %s/%s#%d.%d. Retry in 30s. %s",
w.Repo.Owner, w.Repo.Name, w.Build.Number, w.Job.Number, err)
logrus.Infof("Retry update in 30s")
time.Sleep(time.Second * 30)
}
}
}
func NewStreamLogger(stream client.StreamWriter, w io.Writer, limit int64) LoggerFunc {
var err error
var size int64
return func(line *build.Line) {
if size > limit {
return
}
// TODO remove this double-serialization
linejson, _ := json.Marshal(line)
w.Write(linejson)
w.Write([]byte{'\n'})
if err = stream.WriteJSON(line); err != nil {
logrus.Errorf("Error streaming build logs. %s", err)
}
size += int64(len(line.Out))
}
}
func NewClientLogger(client client.Client, id int64, rc io.ReadCloser, wc io.WriteCloser, limit int64) LoggerFunc {
var once sync.Once
var size int64
return func(line *build.Line) {
// annoying hack to only start streaming once the first line is written
once.Do(func() {
go func() {
err := client.Stream(id, rc)
if err != nil && err != io.ErrClosedPipe {
logrus.Errorf("Error streaming build logs. %s", err)
}
}()
})
if size > limit {
return
}
linejson, _ := json.Marshal(line)
wc.Write(linejson)
wc.Write([]byte{'\n'})
size += int64(len(line.Out))
}
}