英文:
Zap logger add UUID to all logs in golang
问题
我有一个在lambda中使用的方法：
import ("os""go.uber.org/zap""go.uber.org/zap/zapcore")func InitLogger() *zap.Logger {config := zap.NewProductionEncoderConfig()config.EncodeTime = zapcore.RFC3339TimeEncoderconsoleEncoder := zapcore.NewJSONEncoder(config)core := zapcore.NewTee(zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), zapcore.InfoLevel))return zap.New(core).With()}
在我的lambda处理程序中，我有：
var (log *zap.Logger)func init() {log = u.InitLogger()}func handler(r events.APIGatewayProxyRequest) (*events.APIGatewayProxyResponse, error) {out, err := exec.Command("uuidgen").Output()uuid := strings.ReplaceAll(string(out), "\n", "")if err != nil {log.Error(err.Error())}log.Info("PRINT_1", zap.Any("uuid", uuid), zap.Any("Request", r.Body))}
我有一个问题，是否可以在不逐个添加的情况下将UUID添加到所有日志中？因为在每个需要打印的日志中，我都需要添加zap.Any("uuid", uuid)。
问题是我需要将UUID作为参数传递给所有方法，以便在日志信息或错误中打印它。
英文:
I have this method used in a lambda:
import ("os""go.uber.org/zap""go.uber.org/zap/zapcore")func InitLogger() *zap.Logger {config := zap.NewProductionEncoderConfig()config.EncodeTime = zapcore.RFC3339TimeEncoderconsoleEncoder := zapcore.NewJSONEncoder(config)core := zapcore.NewTee(zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), zapcore.InfoLevel))return zap.New(core).With()}
And in my lambda Handler i have:
var (log *zap.Logger)func init() {log = u.InitLogger()}func handler(r events.APIGatewayProxyRequest) (*events.APIGatewayProxyResponse, error) {out, err := exec.Command("uuidgen").Output()uuid := strings.ReplaceAll(string(out), "\n", "")if err != nil {log.Error(err.Error())}log.Info("PRINT_1", zap.Any("uuid", uuid), zap.Any("Request", r.Body))}
I have a question, is possible add the UUID to all logs without adding one by one?, because in each log that I need print something, I need add zap.Any("uuid", uuid)
The problem is that I need pass as parameter to all methods the UUID to print it in the log info, or error.
答案1
得分: 0
你需要稍微调整一下你的代码，因为你只是在处理程序中创建了UUID，这意味着它是特定于请求的，而日志记录器是全局的...
但是，针对该库的要点是，你必须创建一个子记录器（实际上你已经在做了：你只需要将字段传递给它）。任何后续对子记录器的日志写入都将包含这些字段。
例如：
func main() {logger := InitLogger(zap.String("foo", "bar"))logger.Info("First message with our `foo` key")logger.Info("Second message with our `foo` key")}func InitLogger(fields ...zap.Field) *zap.Logger {config := zap.NewProductionEncoderConfig()config.EncodeTime = zapcore.RFC3339TimeEncoderconsoleEncoder := zapcore.NewJSONEncoder(config)core := zapcore.NewTee(zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), zapcore.InfoLevel))return zap.New(core).With(fields...)}
输出：
{"level":"info","ts":"2022-11-24T18:30:45+01:00","msg":"First message with our `foo` key","foo":"bar"}{"level":"info","ts":"2022-11-24T18:30:45+01:00","msg":"Second message with our `foo` key","foo":"bar"}
英文:
You will have to slightly re-arrange your code since you're only creating the UUID in the handler, which implies it's request-specific whilst the logger is global...
But the gist, specific to the library, is that you've got to create a child logger (which you are, in fact, already doing: you just need to pass the fields there). Any subsequent log writes to the child logger will include those fields.
For example:
func main() {logger := InitLogger(zap.String("foo", "bar"))logger.Info("First message with our `foo` key")logger.Info("Second message with our `foo` key")}func InitLogger(fields ...zap.Field) *zap.Logger {config := zap.NewProductionEncoderConfig()config.EncodeTime = zapcore.RFC3339TimeEncoderconsoleEncoder := zapcore.NewJSONEncoder(config)core := zapcore.NewTee(zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), zapcore.InfoLevel))return zap.New(core).With(fields...)}
Output:
{"level":"info","ts":"2022-11-24T18:30:45+01:00","msg":"First message with our `foo` key","foo":"bar"}{"level":"info","ts":"2022-11-24T18:30:45+01:00","msg":"Second message with our `foo` key","foo":"bar"}
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