func log_tailing(conn *scrapinghub.Connection, job_id string) {
var jobs scrapinghub.Jobs
jobinfo, err := jobs.JobInfo(conn, job_id)
if err != nil {
log.Fatalf("%s\n", err)
}
// Number of log lines in the job
offset := jobinfo.Logs
if offset > 0 {
offset -= 1 // start one line before
}
count := 10 // ask for this lines in every call
ls := scrapinghub.LinesStream{Conn: conn, Count: count, Offset: offset}
for {
retrieved := 0
ch_lines, ch_err := ls.LogLines(job_id)
for line := range ch_lines {
retrieved++
fmt.Fprintf(os.Stdout, "%s\n", line)
}
for err := range ch_err {
log.Fatalf("%s\n", err)
}
ls.Offset += retrieved
time.Sleep(time.Second)
}
}
func cmd_log(conn *scrapinghub.Connection, args []string, flags *PFlags) {
if len(args) < 1 {
log.Fatalf("Missing argument: <job_id>\n")
}
job_id := args[0]
count := flags.Count
offset := flags.Offset
if flags.Tailing {
log_tailing(conn, job_id)
} else {
ls := scrapinghub.LinesStream{Conn: conn, Count: count, Offset: offset}
ch_lines, ch_err := ls.LogLines(job_id)
for line := range ch_lines {
print_out(flags, line)
}
for err := range ch_err {
log.Fatalf("log error: %s\n", err)
}
}
}