// Start runs the coprocess
func (coprocess *Coprocess) Start() {
log.Debugf("coprocess[%s].Start", coprocess.Name)
fields := log.Fields{"process": "coprocess", "coprocess": coprocess.Name}
stdout := utils.NewLogWriter(fields, log.InfoLevel)
stderr := utils.NewLogWriter(fields, log.DebugLevel)
coprocess.logWriters = []io.WriteCloser{stdout, stderr}
defer coprocess.closeLogs()
// always reset restartsRemain when we load the config
coprocess.restartsRemain = coprocess.restartLimit
for {
if coprocess.restartLimit != unlimitedRestarts &&
coprocess.restartsRemain <= haltRestarts {
break
}
cmd := utils.ArgsToCmd(coprocess.Args)
coprocess.cmd = cmd
cmd.Stdout = stdout
cmd.Stderr = stderr
if _, err := utils.ExecuteAndWait(cmd); err != nil {
log.Errorf("coprocess[%s] exited: %s", coprocess.Name, err)
}
log.Debugf("coprocess[%s] exited", coprocess.Name)
if !coprocess.restart {
break
}
coprocess.restartsRemain--
}
}
func (c *Command) setUpCmd(fields log.Fields) {
cmd := ArgsToCmd(c.Exec, c.Args)
if fields != nil {
stdout := utils.NewLogWriter(fields, log.InfoLevel)
stderr := utils.NewLogWriter(fields, log.DebugLevel)
c.logWriters = []io.WriteCloser{stdout, stderr}
cmd.Stdout = stdout
cmd.Stderr = stderr
}
c.Cmd = cmd
}
// PollAction runs the task
func (t *Task) PollAction() {
log.Debugf("task[%s].PollAction", t.Name)
cmd := utils.ArgsToCmd(t.Args)
t.cmd = cmd
fields := log.Fields{"process": "task", "task": t.Name}
stdout := utils.NewLogWriter(fields, log.InfoLevel)
stderr := utils.NewLogWriter(fields, log.DebugLevel)
t.logWriters = []io.WriteCloser{stdout, stderr}
cmd.Stdout = stdout
cmd.Stderr = stderr
defer t.closeLogs()
log.Debugf("task[%s].PollAction start", t.Name)
if err := cmd.Start(); err != nil {
log.Errorf("Unable to start task %s: %v", t.Name, err)
return
}
t.run(cmd)
log.Debugf("task[%s].PollAction complete", t.Name)
}