sneak
b57afeddbd
Introduce the Go backend (netwatch-server) with an HTTP API that accepts telemetry reports and persists them as zstd-compressed JSONL files. Reports are buffered in memory and flushed to disk when the buffer reaches 10 MiB or every 60 seconds.
86 lines
1.6 KiB
Go
86 lines
1.6 KiB
Go
// Package logger provides a configured slog.Logger with TTY
|
|
// detection for development vs production output.
|
|
package logger
|
|
|
|
import (
|
|
"log/slog"
|
|
"os"
|
|
|
|
"sneak.berlin/go/netwatch/internal/globals"
|
|
|
|
"go.uber.org/fx"
|
|
)
|
|
|
|
// Params defines the dependencies for Logger.
|
|
type Params struct {
|
|
fx.In
|
|
|
|
Globals *globals.Globals
|
|
}
|
|
|
|
// Logger wraps slog.Logger with dynamic level control.
|
|
type Logger struct {
|
|
log *slog.Logger
|
|
level *slog.LevelVar
|
|
params Params
|
|
}
|
|
|
|
// New creates a Logger with TTY-aware output formatting.
|
|
func New(_ fx.Lifecycle, params Params) (*Logger, error) {
|
|
l := new(Logger)
|
|
l.level = new(slog.LevelVar)
|
|
l.level.Set(slog.LevelInfo)
|
|
l.params = params
|
|
|
|
tty := false
|
|
|
|
if fileInfo, _ := os.Stdout.Stat(); fileInfo != nil {
|
|
if (fileInfo.Mode() & os.ModeCharDevice) != 0 {
|
|
tty = true
|
|
}
|
|
}
|
|
|
|
var handler slog.Handler
|
|
if tty {
|
|
handler = slog.NewTextHandler(
|
|
os.Stdout,
|
|
&slog.HandlerOptions{
|
|
Level: l.level,
|
|
AddSource: true,
|
|
},
|
|
)
|
|
} else {
|
|
handler = slog.NewJSONHandler(
|
|
os.Stdout,
|
|
&slog.HandlerOptions{
|
|
Level: l.level,
|
|
AddSource: true,
|
|
},
|
|
)
|
|
}
|
|
|
|
l.log = slog.New(handler)
|
|
|
|
return l, nil
|
|
}
|
|
|
|
// EnableDebugLogging sets the log level to debug.
|
|
func (l *Logger) EnableDebugLogging() {
|
|
l.level.Set(slog.LevelDebug)
|
|
l.log.Debug("debug logging enabled", "debug", true)
|
|
}
|
|
|
|
// Get returns the underlying slog.Logger.
|
|
func (l *Logger) Get() *slog.Logger {
|
|
return l.log
|
|
}
|
|
|
|
// Identify logs the application's build-time metadata.
|
|
func (l *Logger) Identify() {
|
|
l.log.Info("starting",
|
|
"appname", l.params.Globals.Appname,
|
|
"version", l.params.Globals.Version,
|
|
"buildarch", l.params.Globals.Buildarch,
|
|
)
|
|
}
|