8983a9fefa
Replace raw fmt/log calls with structured slog logger (Go) and console-based logger (TypeScript). Add request logging middleware. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
59 lines
1.5 KiB
Go
59 lines
1.5 KiB
Go
package logger
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import (
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"log/slog"
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"net/http"
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"os"
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"strings"
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chimw "github.com/go-chi/chi/v5/middleware"
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"github.com/lmittmann/tint"
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)
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// Init initializes the global slog logger with colored terminal output.
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// Reads LOG_LEVEL env var (debug, info, warn, error). Default: debug.
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func Init() {
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level := parseLevel(os.Getenv("LOG_LEVEL"))
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handler := tint.NewHandler(os.Stderr, &tint.Options{
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Level: level,
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TimeFormat: "15:04:05.000",
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})
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slog.SetDefault(slog.New(handler))
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}
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// NewLogger creates a named slog logger with colored terminal output.
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// Useful for standalone processes (daemon, migrate) that want a component prefix.
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func NewLogger(component string) *slog.Logger {
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level := parseLevel(os.Getenv("LOG_LEVEL"))
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handler := tint.NewHandler(os.Stderr, &tint.Options{
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Level: level,
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TimeFormat: "15:04:05.000",
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})
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return slog.New(handler).With("component", component)
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}
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// RequestAttrs extracts request_id and user_id from an HTTP request
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// for use in handler-level structured logging.
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func RequestAttrs(r *http.Request) []any {
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attrs := make([]any, 0, 4)
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if rid := chimw.GetReqID(r.Context()); rid != "" {
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attrs = append(attrs, "request_id", rid)
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}
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if uid := r.Header.Get("X-User-ID"); uid != "" {
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attrs = append(attrs, "user_id", uid)
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}
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return attrs
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}
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func parseLevel(s string) slog.Level {
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switch strings.ToLower(strings.TrimSpace(s)) {
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case "info":
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return slog.LevelInfo
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case "warn", "warning":
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return slog.LevelWarn
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case "error":
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return slog.LevelError
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default:
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return slog.LevelDebug
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}
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}
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