Add custom logger with source location tracking and remove verbose database logs

- Create internal/logger package with Logger wrapper around slog
- Logger automatically adds source file, line number, and function name to all log entries
- Use golang.org/x/term to properly detect if stdout is a terminal
- Replace all slog.Logger usage with logger.Logger throughout the codebase
- Remove verbose logging from database GetStats() method
- Update all constructors and dependencies to use the new logger

internal/routewatch/app.go

@@ -5,14 +5,13 @@ package routewatch
 import (
 	"context"
 	"fmt"
-	"log/slog"
 	"os"
-	"strings"
 	"sync"
 	"time"
 
 	"git.eeqj.de/sneak/routewatch/internal/config"
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/metrics"
 	"git.eeqj.de/sneak/routewatch/internal/routingtable"
 	"git.eeqj.de/sneak/routewatch/internal/server"
@@ -35,7 +34,7 @@ type Dependencies struct {
 	RoutingTable *routingtable.RoutingTable
 	Streamer     *streamer.Streamer
 	Server       *server.Server
-	Logger       *slog.Logger
+	Logger       *logger.Logger
 	Config       *config.Config
 }
 
@@ -46,7 +45,7 @@ type RouteWatch struct {
 	streamer           *streamer.Streamer
 	server             *server.Server
 	snapshotter        *snapshotter.Snapshotter
-	logger             *slog.Logger
+	logger             *logger.Logger
 	maxRuntime         time.Duration
 	shutdown           bool
 	mu                 sync.Mutex
@@ -229,34 +228,11 @@ func (rw *RouteWatch) logRoutingTableStats(ctx context.Context) {
 	}
 }
 
-// NewLogger creates a structured logger
-func NewLogger() *slog.Logger {
-	level := slog.LevelInfo
-	if debug := os.Getenv("DEBUG"); strings.Contains(debug, "routewatch") {
-		level = slog.LevelDebug
-	}
-
-	opts := &slog.HandlerOptions{
-		Level: level,
-	}
-
-	var handler slog.Handler
-	if os.Stdout.Name() != "/dev/stdout" || os.Getenv("TERM") == "" {
-		// Not a terminal, use JSON
-		handler = slog.NewJSONHandler(os.Stdout, opts)
-	} else {
-		// Terminal, use text
-		handler = slog.NewTextHandler(os.Stdout, opts)
-	}
-
-	return slog.New(handler)
-}
-
 // getModule provides all fx dependencies
 func getModule() fx.Option {
 	return fx.Options(
 		fx.Provide(
-			NewLogger,
+			logger.New,
 			config.New,
 			metrics.New,
 			fx.Annotate(

internal/routewatch/app_integration_test.go

@@ -9,6 +9,7 @@ import (
 
 	"git.eeqj.de/sneak/routewatch/internal/config"
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/metrics"
 	"git.eeqj.de/sneak/routewatch/internal/routingtable"
 	"git.eeqj.de/sneak/routewatch/internal/server"
@@ -164,7 +165,7 @@ func TestRouteWatchLiveFeed(t *testing.T) {
 	mockDB := newMockStore()
 	defer mockDB.Close()
 
-	logger := NewLogger()
+	logger := logger.New()
 
 	// Create metrics tracker
 	metricsTracker := metrics.New()

internal/routewatch/app_test.go

@@ -1,12 +1,3 @@
 package routewatch
 
-import (
-	"testing"
-)
-
-func TestNewLogger(t *testing.T) {
-	logger := NewLogger()
-	if logger == nil {
-		t.Fatal("NewLogger returned nil")
-	}
-}
+// Tests for routewatch package are in app_integration_test.go

internal/routewatch/cli.go

@@ -2,12 +2,12 @@ package routewatch
 
 import (
 	"context"
-	"log/slog"
 	"os"
 	"os/signal"
 	"syscall"
 	"time"
 
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"go.uber.org/fx"
 )
 
@@ -21,7 +21,7 @@ func CLIEntry() {
 	app := fx.New(
 		getModule(),
 		fx.StopTimeout(shutdownTimeout), // Allow 60 seconds for graceful shutdown
-		fx.Invoke(func(lc fx.Lifecycle, rw *RouteWatch, logger *slog.Logger) {
+		fx.Invoke(func(lc fx.Lifecycle, rw *RouteWatch, logger *logger.Logger) {
 			lc.Append(fx.Hook{
 				OnStart: func(_ context.Context) error {
 					go func() {

internal/routewatch/dbhandler.go

@@ -1,9 +1,8 @@
 package routewatch
 
 import (
-	"log/slog"
-
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
 )
 
@@ -15,13 +14,13 @@ const (
 // DatabaseHandler handles BGP messages and stores them in the database
 type DatabaseHandler struct {
 	db     database.Store
-	logger *slog.Logger
+	logger *logger.Logger
 }
 
 // NewDatabaseHandler creates a new database handler
 func NewDatabaseHandler(
 	db database.Store,
-	logger *slog.Logger,
+	logger *logger.Logger,
 ) *DatabaseHandler {
 	return &DatabaseHandler{
 		db:     db,

internal/routewatch/dbhandler_batched.go

@@ -1,11 +1,11 @@
 package routewatch
 
 import (
-	"log/slog"
 	"sync"
 	"time"
 
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
 )
 
@@ -23,7 +23,7 @@ const (
 // BatchedDatabaseHandler handles BGP messages and stores them in the database using batched operations
 type BatchedDatabaseHandler struct {
 	db     database.Store
-	logger *slog.Logger
+	logger *logger.Logger
 
 	// Batching
 	mu           sync.Mutex
@@ -54,7 +54,7 @@ type peeringOp struct {
 // NewBatchedDatabaseHandler creates a new batched database handler
 func NewBatchedDatabaseHandler(
 	db database.Store,
-	logger *slog.Logger,
+	logger *logger.Logger,
 ) *BatchedDatabaseHandler {
 	h := &BatchedDatabaseHandler{
 		db:           db,

internal/routewatch/handler.go

@@ -1,19 +1,23 @@
 package routewatch
 
 import (
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
-	"log/slog"
 )
 
 // SimpleHandler is a basic implementation of streamer.MessageHandler
 type SimpleHandler struct {
-	logger       *slog.Logger
+	logger       *logger.Logger
 	messageTypes []string
 	callback     func(*ristypes.RISMessage)
 }
 
 // NewSimpleHandler creates a handler that accepts specific message types
-func NewSimpleHandler(logger *slog.Logger, messageTypes []string, callback func(*ristypes.RISMessage)) *SimpleHandler {
+func NewSimpleHandler(
+	logger *logger.Logger,
+	messageTypes []string,
+	callback func(*ristypes.RISMessage),
+) *SimpleHandler {
 	return &SimpleHandler{
 		logger:       logger,
 		messageTypes: messageTypes,

internal/routewatch/peerhandler.go

@@ -1,10 +1,10 @@
 package routewatch
 
 import (
-	"log/slog"
 	"strconv"
 
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
 )
 
@@ -16,11 +16,11 @@ const (
 // PeerHandler tracks BGP peers from all message types
 type PeerHandler struct {
 	db     database.Store
-	logger *slog.Logger
+	logger *logger.Logger
 }
 
 // NewPeerHandler creates a new peer tracking handler
-func NewPeerHandler(db database.Store, logger *slog.Logger) *PeerHandler {
+func NewPeerHandler(db database.Store, logger *logger.Logger) *PeerHandler {
 	return &PeerHandler{
 		db:     db,
 		logger: logger,

internal/routewatch/peerhandler_batched.go

@@ -1,12 +1,12 @@
 package routewatch
 
 import (
-	"log/slog"
 	"strconv"
 	"sync"
 	"time"
 
 	"git.eeqj.de/sneak/routewatch/internal/database"
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
 )
 
@@ -24,7 +24,7 @@ const (
 // BatchedPeerHandler tracks BGP peers from all message types using batched operations
 type BatchedPeerHandler struct {
 	db     database.Store
-	logger *slog.Logger
+	logger *logger.Logger
 
 	// Batching
 	mu        sync.Mutex
@@ -42,7 +42,7 @@ type peerUpdate struct {
 }
 
 // NewBatchedPeerHandler creates a new batched peer tracking handler
-func NewBatchedPeerHandler(db database.Store, logger *slog.Logger) *BatchedPeerHandler {
+func NewBatchedPeerHandler(db database.Store, logger *logger.Logger) *BatchedPeerHandler {
 	h := &BatchedPeerHandler{
 		db:        db,
 		logger:    logger,

internal/routewatch/routingtablehandler.go

@@ -1,9 +1,9 @@
 package routewatch
 
 import (
-	"log/slog"
 	"strconv"
 
+	"git.eeqj.de/sneak/routewatch/internal/logger"
 	"git.eeqj.de/sneak/routewatch/internal/ristypes"
 	"git.eeqj.de/sneak/routewatch/internal/routingtable"
 	"github.com/google/uuid"
@@ -17,11 +17,11 @@ const (
 // RoutingTableHandler handles BGP messages and updates the in-memory routing table
 type RoutingTableHandler struct {
 	rt     *routingtable.RoutingTable
-	logger *slog.Logger
+	logger *logger.Logger
 }
 
 // NewRoutingTableHandler creates a new routing table handler
-func NewRoutingTableHandler(rt *routingtable.RoutingTable, logger *slog.Logger) *RoutingTableHandler {
+func NewRoutingTableHandler(rt *routingtable.RoutingTable, logger *logger.Logger) *RoutingTableHandler {
 	return &RoutingTableHandler{
 		rt:     rt,
 		logger: logger,