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How to configure Golang log level in Debian system
How to configure Golang log level in Debian system
Apr 12, 2025 pm 08:48 PM
To configure the log level of the Golang application on the Debian system, you need to follow the following steps:
- Select a log library: First, select the appropriate log library. The Go standard library's
logpackages are simple to use, while third-party libraries such aslogrusandzapprovide more powerful features and performance.
- Set log level: Set the corresponding log level according to the selected log library. The settings of different libraries vary.
Use the standard library log
The Go standard library's log package itself does not directly support the log level, but can be simulated by custom output formats. The following example demonstrates how to control output based on preset levels:
package main
import (
"log"
"os"
"time"
)
func main() {
log.SetOutput(os.Stdout)
logLevel := "INFO" // Can be modified to "DEBUG" or "ERROR"
prefix := "[" time.Now().Format(time.RFC3339) "] "
log.SetPrefix(prefix)
switch logLevel {
case "DEBUG":
log.SetFlags(log.LstdFlags | log.Lshortfile)
case "INFO", "ERROR":
log.SetFlags(log.LstdFlags)
}
log.Println("This is an info message")
log.Println("This is a debug message") // Decide whether to output based on logLevel}
Use third-party library logrus
logrus is a popular log library that supports multiple log levels.
Installation:
go get github.com/sirupsen/logrusConfiguration:
package main
import (
"os"
"github.com/sirupsen/logrus"
)
func main() {
logger := logrus.New()
logger.SetLevel(logrus.InfoLevel) // Can be modified to DebugLevel, ErrorLevel, etc. logger.SetFormatter(&logrus.JSONFormatter{})
logger.SetOutput(os.Stdout)
logger.Info("This is an info message")
logger.Debug("This is a debug message") // Decide whether to output based on SetLevel}
Using third-party library zap
zap is another high-performance log library.
Installation:
go get go.uber.org/zapConfiguration:
package main
import (
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
func main() {
logger, err := zap.NewProduction()
if err != nil {
panic(err)
}
defer logger.Sync()
logger = logger.WithOptions(zap.LevelEnforcer(zapcore.InfoLevel)) // The log level can be modified logger.Info("This is an info message")
logger.Debug("This is a debug message") // Decide whether to output based on LevelEnforcer}
Selecting the appropriate log library and referring to its documentation for detailed configuration can effectively manage and control the log output of Golang applied on the Debian system. Remember to choose the right log level according to your needs.
The above is the detailed content of How to configure Golang log level in Debian system. For more information, please follow other related articles on the PHP Chinese website!
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