fix(shipping): use `log.NewSyncWriter` in example
Replace the use of `serializedLogger` with `log.NewSyncWriter` which
provides similar functionality.
`SyncWriter` is chosen over `SyncLogger` to reduce the amount of work
contained within a lock.
Terin Stock
6 years ago
| 6 | 6 | "net/http" |
| 7 | 7 | "os" |
| 8 | 8 | "os/signal" |
| 9 | "sync" | |
| 10 | 9 | "syscall" |
| 11 | 10 | "time" |
| 12 | 11 | |
| 45 | 44 | flag.Parse() |
| 46 | 45 | |
| 47 | 46 | var logger log.Logger |
| 48 | logger = log.NewLogfmtLogger(os.Stderr) | |
| 49 | logger = &serializedLogger{Logger: logger} | |
| 47 | logger = log.NewLogfmtLogger(log.NewSyncWriter(os.Stderr)) | |
| 50 | 48 | logger = log.With(logger, "ts", log.DefaultTimestampUTC) |
| 51 | 49 | |
| 52 | 50 | var ( |
| 199 | 197 | panic(err) |
| 200 | 198 | } |
| 201 | 199 | } |
| 202 | ||
| 203 | type serializedLogger struct { | |
| 204 | mtx sync.Mutex | |
| 205 | log.Logger | |
| 206 | } | |
| 207 | ||
| 208 | func (l *serializedLogger) Log(keyvals ...interface{}) error { | |
| 209 | l.mtx.Lock() | |
| 210 | defer l.mtx.Unlock() | |
| 211 | return l.Logger.Log(keyvals...) | |
| 212 | } | |