log

Documentation

Index

• func RequestLogger(logger *Logger) func(next http.Handler) http.Handler
• type ConsoleDestination
  • func (c *ConsoleDestination) Close() error
  • func (c *ConsoleDestination) Write(p []byte) (n int, err error)
• type Field
  • func NewField(key string, value interface{}) Field
• type FileDestination
  • func NewFileDestination(filePath string) (*FileDestination, error)
  • func (f *FileDestination) Close() error
  • func (f *FileDestination) Write(p []byte) (n int, err error)
• type Level
• type Logger
  • func NewLogger(config LoggerConfig) (*Logger, error)
  • func NewSilentLogger() (*Logger, error)
  • func (l *Logger) Debug(msg string, fields ...Field)
  • func (l *Logger) Error(msg string, fields ...Field)
  • func (l *Logger) Fatal(msg string, fields ...Field)
  • func (l *Logger) Flush() error
  • func (l *Logger) Info(msg string, fields ...Field)
  • func (l *Logger) Warn(msg string, fields ...Field)
• type LoggerConfig
• type RemoteDestination
  • func NewRemoteDestination(url string) *RemoteDestination
  • func (r *RemoteDestination) Close() error
  • func (r *RemoteDestination) Write(p []byte) (n int, err error)

Functions

func RequestLogger

func RequestLogger(logger *Logger) func(next http.Handler) http.Handler

RequestLogger is a middleware that logs HTTP requests

Types

type ConsoleDestination

type ConsoleDestination struct{}

ConsoleDestination writes logs to the console

func (*ConsoleDestination) Close

func (c *ConsoleDestination) Close() error

Close closes the console destination (no-op for console)

func (*ConsoleDestination) Write

func (c *ConsoleDestination) Write(p []byte) (n int, err error)

Write writes log entry to console (stdout)

type Field

type Field struct {
	Key   string
	Value interface{}
}

Field represents a key-value pair for structured logging

func NewField

func NewField(key string, value interface{}) Field

type FileDestination

type FileDestination struct {
	// contains filtered or unexported fields
}

FileDestination writes logs to a file

func NewFileDestination

func NewFileDestination(filePath string) (*FileDestination, error)

NewFileDestination initializes a new file destination for logs

func (*FileDestination) Close

func (f *FileDestination) Close() error

Close closes the file

func (*FileDestination) Write

func (f *FileDestination) Write(p []byte) (n int, err error)

Write writes log entry to a file

type Level

type Level int

Level represents the severity of the log message.

const (
	DEBUG Level = iota
	INFO
	WARN
	ERROR
	FATAL
)

type Logger

type Logger struct {
	// contains filtered or unexported fields
}

func NewLogger

func NewLogger(config LoggerConfig) (*Logger, error)

func NewSilentLogger

func NewSilentLogger() (*Logger, error)

NewSilentLogger creates a logger that silences all log output

func (*Logger) Debug

func (l *Logger) Debug(msg string, fields ...Field)

func (*Logger) Error

func (l *Logger) Error(msg string, fields ...Field)

func (*Logger) Fatal

func (l *Logger) Fatal(msg string, fields ...Field)

func (*Logger) Flush

func (l *Logger) Flush() error

func (*Logger) Info

func (l *Logger) Info(msg string, fields ...Field)

func (*Logger) Warn

func (l *Logger) Warn(msg string, fields ...Field)

type LoggerConfig

type LoggerConfig struct {
	Level       Level
	Destination io.WriteCloser
	ServiceName string
}

type RemoteDestination

type RemoteDestination struct {
	// contains filtered or unexported fields
}

RemoteDestination simulates sending logs to a remote aggregator (e.g., Prometheus or Grafana)

func NewRemoteDestination

func NewRemoteDestination(url string) *RemoteDestination

func (*RemoteDestination) Close

func (r *RemoteDestination) Close() error

Close closes the remote destination (no-op for this example)

func (*RemoteDestination) Write

func (r *RemoteDestination) Write(p []byte) (n int, err error)

Write sends log entry to remote destination