From 973fa31b6743a3ea84c86ab7671349cc70a69142 Mon Sep 17 00:00:00 2001
From: Alan Pearce
Date: Sat, 29 Jun 2024 21:27:35 +0200
Subject: enable filtered debug logging via DEBUG="component.*"

---
 internal/builder/builder.go   | 18 ++++++------
 internal/config/config.go     |  2 +-
 internal/content/posts.go     | 16 +++++++----
 internal/listenfd/listenfd.go | 11 ++++++--
 internal/log/log.go           | 66 +++++++++++++++++++++++++++++--------------
 internal/server/dev.go        | 19 +++++++------
 internal/server/logging.go    |  2 +-
 internal/server/mime.go       |  6 +---
 internal/server/server.go     | 32 ++++++++++++---------
 internal/server/tcp.go        |  2 +-
 internal/server/tls.go        |  7 +++--
 internal/vcs/repository.go    | 13 +++++----
 internal/website/filemap.go   |  2 +-
 internal/website/mux.go       | 12 ++++----
 14 files changed, 125 insertions(+), 83 deletions(-)

(limited to 'internal')

diff --git a/internal/builder/builder.go b/internal/builder/builder.go
index 0d4b1fc..b6da17d 100644
--- a/internal/builder/builder.go
+++ b/internal/builder/builder.go
@@ -93,7 +93,7 @@ func joinSourcePath(src string) func(string) string {
 	}
 }
 
-func build(ioConfig *IOConfig, config *config.Config) (*Result, error) {
+func build(ioConfig *IOConfig, config *config.Config, log *log.Logger) (*Result, error) {
 	outDir := ioConfig.Destination
 	joinSource := joinSourcePath(ioConfig.Source)
 	log.Debug("output", "dir", outDir)
@@ -110,7 +110,11 @@ func build(ioConfig *IOConfig, config *config.Config) (*Result, error) {
 		return nil, errors.WithMessage(err, "could not create post output directory")
 	}
 	log.Debug("reading posts")
-	posts, tags, err := content.ReadPosts(joinSource("content"), "post", outDir)
+	posts, tags, err := content.ReadPosts(&content.Config{
+		Root:      joinSource("content"),
+		InputDir:  "post",
+		OutputDir: outDir,
+	}, log.Named("content"))
 	if err != nil {
 		return nil, err
 	}
@@ -254,13 +258,9 @@ func build(ioConfig *IOConfig, config *config.Config) (*Result, error) {
 	return r, nil
 }
 
-func BuildSite(ioConfig *IOConfig, cfg *config.Config) (*Result, error) {
+func BuildSite(ioConfig *IOConfig, cfg *config.Config, log *log.Logger) (*Result, error) {
 	if cfg == nil {
-		var err error
-		cfg, err = config.GetConfig(ioConfig.Source)
-		if err != nil {
-			return nil, errors.WithMessage(err, "could not get config")
-		}
+		return nil, errors.New("config is nil")
 	}
 	cfg.InjectLiveReload = ioConfig.Development
 	compressFiles = !ioConfig.Development
@@ -268,5 +268,5 @@ func BuildSite(ioConfig *IOConfig, cfg *config.Config) (*Result, error) {
 	templates.Setup()
 	loadCSS(ioConfig.Source)
 
-	return build(ioConfig, cfg)
+	return build(ioConfig, cfg, log)
 }
diff --git a/internal/config/config.go b/internal/config/config.go
index 5e568cd..42e36d7 100644
--- a/internal/config/config.go
+++ b/internal/config/config.go
@@ -51,7 +51,7 @@ type Config struct {
 	Menus map[string][]MenuItem
 }
 
-func GetConfig(dir string) (*Config, error) {
+func GetConfig(dir string, log *log.Logger) (*Config, error) {
 	config := Config{}
 	filename := filepath.Join(dir, "config.toml")
 	log.Debug("reading config", "filename", filename)
diff --git a/internal/content/posts.go b/internal/content/posts.go
index 000cd98..dd14d1e 100644
--- a/internal/content/posts.go
+++ b/internal/content/posts.go
@@ -13,11 +13,11 @@ import (
 
 	"github.com/adrg/frontmatter"
 	mapset "github.com/deckarep/golang-set/v2"
-	"gitlab.com/tozd/go/errors"
 	fences "github.com/stefanfritsch/goldmark-fences"
 	"github.com/yuin/goldmark"
 	"github.com/yuin/goldmark/extension"
 	htmlrenderer "github.com/yuin/goldmark/renderer/html"
+	"gitlab.com/tozd/go/errors"
 )
 
 type PostMatter struct {
@@ -80,16 +80,22 @@ func RenderMarkdown(content []byte) (string, error) {
 	return buf.String(), nil
 }
 
-func ReadPosts(root string, inputDir string, outputDir string) ([]Post, Tags, error) {
+type Config struct {
+	Root      string
+	InputDir  string
+	OutputDir string
+}
+
+func ReadPosts(config *Config, log *log.Logger) ([]Post, Tags, error) {
 	tags := mapset.NewSet[string]()
 	posts := []Post{}
-	subdir := filepath.Join(root, inputDir)
+	subdir := filepath.Join(config.Root, config.InputDir)
 	files, err := os.ReadDir(subdir)
 	if err != nil {
 		return nil, nil, errors.WithMessagef(err, "could not read post directory %s", subdir)
 	}
-	outputReplacer := strings.NewReplacer(root, outputDir, ".md", "/index.html")
-	urlReplacer := strings.NewReplacer(root, "", ".md", "/")
+	outputReplacer := strings.NewReplacer(config.Root, config.OutputDir, ".md", "/index.html")
+	urlReplacer := strings.NewReplacer(config.Root, "", ".md", "/")
 	for _, f := range files {
 		pathFromRoot := filepath.Join(subdir, f.Name())
 		if !f.IsDir() && path.Ext(pathFromRoot) == ".md" {
diff --git a/internal/listenfd/listenfd.go b/internal/listenfd/listenfd.go
index 4e8c007..8c723eb 100644
--- a/internal/listenfd/listenfd.go
+++ b/internal/listenfd/listenfd.go
@@ -13,7 +13,7 @@ import (
 
 const fdStart = 3
 
-func GetListener(i uint64, addr string) (l net.Listener, err error) {
+func GetListener(i uint64, addr string, log *log.Logger) (l net.Listener, err error) {
 	l, err = getFDSocket(i)
 	if err != nil {
 		log.Warn("could not create listener from listenfd", "error", err)
@@ -30,8 +30,13 @@ func GetListener(i uint64, addr string) (l net.Listener, err error) {
 	return
 }
 
-func GetListenerTLS(i uint64, addr string, config *tls.Config) (l net.Listener, err error) {
-	l, err = GetListener(i, addr)
+func GetListenerTLS(
+	i uint64,
+	addr string,
+	config *tls.Config,
+	log *log.Logger,
+) (l net.Listener, err error) {
+	l, err = GetListener(i, addr, log)
 	if err != nil {
 		return nil, err
 	}
diff --git a/internal/log/log.go b/internal/log/log.go
index a0f5ba7..f644e6b 100644
--- a/internal/log/log.go
+++ b/internal/log/log.go
@@ -7,30 +7,43 @@ import (
 	prettyconsole "github.com/thessem/zap-prettyconsole"
 	"go.uber.org/zap"
 	"go.uber.org/zap/zapcore"
+	"moul.io/zapfilter"
 )
 
-var logger *zap.SugaredLogger
+type Logger struct {
+	logger *zap.SugaredLogger
+}
 
-func DPanic(msg string, rest ...any) {
-	logger.DPanicw(msg, rest...)
+func (l Logger) DPanic(msg string, rest ...any) {
+	l.logger.DPanicw(msg, rest...)
 }
-func Debug(msg string, rest ...any) {
-	logger.Debugw(msg, rest...)
+func (l Logger) Debug(msg string, rest ...any) {
+	l.logger.Debugw(msg, rest...)
 }
-func Info(msg string, rest ...any) {
-	logger.Infow(msg, rest...)
+func (l Logger) Info(msg string, rest ...any) {
+	l.logger.Infow(msg, rest...)
 }
-func Warn(msg string, rest ...any) {
-	logger.Warnw(msg, rest...)
+func (l Logger) Warn(msg string, rest ...any) {
+	l.logger.Warnw(msg, rest...)
 }
-func Error(msg string, rest ...any) {
-	logger.Errorw(msg, rest...)
+func (l Logger) Error(msg string, rest ...any) {
+	l.logger.Errorw(msg, rest...)
 }
-func Panic(msg string, rest ...any) {
-	logger.Panicw(msg, rest...)
+func (l Logger) Panic(msg string, rest ...any) {
+	l.logger.Panicw(msg, rest...)
 }
-func Fatal(msg string, rest ...any) {
-	logger.Fatalw(msg, rest...)
+func (l Logger) Fatal(msg string, rest ...any) {
+	l.logger.Fatalw(msg, rest...)
+}
+
+func (l Logger) Named(name string) *Logger {
+	return &Logger{
+		logger: l.logger.Named(name),
+	}
+}
+
+func (l Logger) GetLogger() *zap.Logger {
+	return l.logger.Desugar()
 }
 
 func getLevelFromEnv() (zapcore.Level, error) {
@@ -43,7 +56,7 @@ func getLevelFromEnv() (zapcore.Level, error) {
 	return zap.InfoLevel, nil
 }
 
-func Configure(isProduction bool) {
+func Configure(isProduction bool) *Logger {
 	var l *zap.Logger
 	level, err := getLevelFromEnv()
 	if err != nil {
@@ -54,10 +67,21 @@ func Configure(isProduction bool) {
 		cfg.TimeKey = ""
 		l = zap.New(zapcore.NewCore(zaplogfmt.NewEncoder(cfg), os.Stderr, level))
 	} else {
-		cfg := prettyconsole.NewConfig()
-		cfg.EncoderConfig.TimeKey = ""
-		cfg.Level.SetLevel(level)
-		l = zap.Must(cfg.Build())
+		cfg := prettyconsole.NewEncoderConfig()
+		cfg.TimeKey = ""
+		var filter zapfilter.FilterFunc
+		if debug := os.Getenv("DEBUG"); debug != "" {
+			filter = zapfilter.Any(zapfilter.MinimumLevel(level), zapfilter.ByNamespaces(debug))
+		} else {
+			filter = zapfilter.MinimumLevel(level)
+		}
+		l = zap.New(zapfilter.NewFilteringCore(
+			zapcore.NewCore(prettyconsole.NewEncoder(cfg), os.Stderr, zap.DebugLevel),
+			filter,
+		))
+	}
+
+	return &Logger{
+		logger: l.WithOptions(zap.AddCallerSkip(1)).Sugar(),
 	}
-	logger = l.WithOptions(zap.AddCallerSkip(1)).Sugar()
 }
diff --git a/internal/server/dev.go b/internal/server/dev.go
index e83201a..4db9465 100644
--- a/internal/server/dev.go
+++ b/internal/server/dev.go
@@ -3,7 +3,6 @@ package server
 import (
 	"fmt"
 	"io/fs"
-	"log/slog"
 	"os"
 	"path"
 	"path/filepath"
@@ -21,6 +20,7 @@ type FileWatcher struct {
 }
 
 var (
+	l       *log.Logger
 	ignores = []string{
 		"*.templ",
 		"*.go",
@@ -32,7 +32,7 @@ func matches(name string) func(string) bool {
 	return func(pattern string) bool {
 		matched, err := path.Match(pattern, name)
 		if err != nil {
-			log.Warn("error checking watcher ignores", "error", err)
+			l.Warn("error checking watcher ignores", "error", err)
 		}
 
 		return matched
@@ -43,23 +43,24 @@ func ignored(pathname string) bool {
 	return slices.ContainsFunc(ignores, matches(path.Base(pathname)))
 }
 
-func NewFileWatcher() (*FileWatcher, error) {
+func NewFileWatcher(log *log.Logger) (*FileWatcher, error) {
 	watcher, err := fsnotify.NewWatcher()
 	if err != nil {
 		return nil, errors.WithMessage(err, "could not create watcher")
 	}
+	l = log
 
 	return &FileWatcher{watcher}, nil
 }
 
 func (watcher FileWatcher) AddRecursive(from string) error {
-	log.Debug("walking directory tree", "root", from)
+	l.Debug("walking directory tree", "root", from)
 	err := filepath.WalkDir(from, func(path string, entry fs.DirEntry, err error) error {
 		if err != nil {
 			return errors.WithMessagef(err, "could not walk directory %s", path)
 		}
 		if entry.IsDir() {
-			log.Debug("adding directory to watcher", "path", path)
+			l.Debug("adding directory to watcher", "path", path)
 			if err = watcher.Add(path); err != nil {
 				return errors.WithMessagef(err, "could not add directory %s to watcher", path)
 			}
@@ -77,17 +78,17 @@ func (watcher FileWatcher) Start(callback func(string)) {
 		select {
 		case event := <-watcher.Events:
 			if !ignored(event.Name) {
-				log.Debug("watcher event", "name", event.Name, "op", event.Op.String())
+				l.Debug("watcher event", "name", event.Name, "op", event.Op.String())
 				if event.Has(fsnotify.Create) || event.Has(fsnotify.Rename) {
 					f, err := os.Stat(event.Name)
 					if err != nil {
-						slog.Error(
+						l.Error(
 							fmt.Sprintf("error handling %s event: %v", event.Op.String(), err),
 						)
 					} else if f.IsDir() {
 						err = watcher.Add(event.Name)
 						if err != nil {
-							slog.Error(fmt.Sprintf("error adding new folder to watcher: %v", err))
+							l.Error(fmt.Sprintf("error adding new folder to watcher: %v", err))
 						}
 					}
 				}
@@ -102,7 +103,7 @@ func (watcher FileWatcher) Start(callback func(string)) {
 				}
 			}
 		case err := <-watcher.Errors:
-			slog.Error(fmt.Sprintf("error in watcher: %v", err))
+			l.Error("error in watcher", "error", err)
 		}
 	}
 }
diff --git a/internal/server/logging.go b/internal/server/logging.go
index 20f0a92..6393099 100644
--- a/internal/server/logging.go
+++ b/internal/server/logging.go
@@ -23,7 +23,7 @@ func NewLoggingResponseWriter(w http.ResponseWriter) *LoggingResponseWriter {
 	return &LoggingResponseWriter{w, http.StatusOK}
 }
 
-func wrapHandlerWithLogging(wrappedHandler http.Handler) http.Handler {
+func wrapHandlerWithLogging(wrappedHandler http.Handler, log *log.Logger) http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		lw := NewLoggingResponseWriter(w)
 		wrappedHandler.ServeHTTP(lw, r)
diff --git a/internal/server/mime.go b/internal/server/mime.go
index 3a1ec8a..340e4c5 100644
--- a/internal/server/mime.go
+++ b/internal/server/mime.go
@@ -10,14 +10,10 @@ var newMIMEs = map[string]string{
 	".xsl": "text/xsl",
 }
 
-func fixupMIMETypes() {
+func fixupMIMETypes(log *log.Logger) {
 	for ext, newType := range newMIMEs {
 		if err := mime.AddExtensionType(ext, newType); err != nil {
 			log.Error("could not update mime type", "ext", ext, "mime", newType)
 		}
 	}
 }
-
-func init() {
-	fixupMIMETypes()
-}
diff --git a/internal/server/server.go b/internal/server/server.go
index dfb0f8c..f01f939 100644
--- a/internal/server/server.go
+++ b/internal/server/server.go
@@ -49,6 +49,7 @@ type Server struct {
 	redirectServer *http.Server
 	runtimeConfig  *Config
 	config         *cfg.Config
+	log            *log.Logger
 }
 
 func applyDevModeOverrides(config *cfg.Config, runtimeConfig *Config) {
@@ -87,8 +88,8 @@ func serverHeaderHandler(wrappedHandler http.Handler) http.Handler {
 	})
 }
 
-func rebuild(builderConfig *builder.IOConfig, config *cfg.Config) error {
-	r, err := builder.BuildSite(builderConfig, config)
+func rebuild(builderConfig *builder.IOConfig, config *cfg.Config, log *log.Logger) error {
+	r, err := builder.BuildSite(builderConfig, config, log.Named("builder"))
 	if err != nil {
 		return errors.WithMessage(err, "could not build site")
 	}
@@ -97,7 +98,7 @@ func rebuild(builderConfig *builder.IOConfig, config *cfg.Config) error {
 	return nil
 }
 
-func New(runtimeConfig *Config) (*Server, error) {
+func New(runtimeConfig *Config, log *log.Logger) (*Server, error) {
 	builderConfig := &builder.IOConfig{
 		Destination: runtimeConfig.Root,
 		Development: runtimeConfig.Development,
@@ -109,7 +110,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 		if err != nil {
 			return nil, err
 		}
-		_, err = vcs.CloneOrUpdate(vcsConfig)
+		_, err = vcs.CloneOrUpdate(vcsConfig, log.Named("vcs"))
 		if err != nil {
 			return nil, err
 		}
@@ -125,7 +126,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 		runtimeConfig.Root = publicDir
 	}
 
-	config, err := cfg.GetConfig(builderConfig.Source)
+	config, err := cfg.GetConfig(builderConfig.Source, log.Named("config"))
 	if err != nil {
 		return nil, errors.WithMessage(err, "error parsing configuration file")
 	}
@@ -136,16 +137,18 @@ func New(runtimeConfig *Config) (*Server, error) {
 	listenAddress := net.JoinHostPort(runtimeConfig.ListenAddress, strconv.Itoa(runtimeConfig.Port))
 	top := http.NewServeMux()
 
-	err = rebuild(builderConfig, config)
+	err = rebuild(builderConfig, config, log)
 	if err != nil {
 		return nil, err
 	}
 
+	fixupMIMETypes(log)
+
 	if runtimeConfig.Development {
 		liveReload := livereload.New()
 		top.Handle("/_/reload", liveReload)
 		liveReload.Start()
-		fw, err := NewFileWatcher()
+		fw, err := NewFileWatcher(log.Named("watcher"))
 		if err != nil {
 			return nil, errors.WithMessage(err, "could not create file watcher")
 		}
@@ -165,7 +168,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 		}
 		go fw.Start(func(filename string) {
 			log.Info("rebuilding site", "changed_file", filename)
-			err := rebuild(builderConfig, config)
+			err := rebuild(builderConfig, config, log)
 			if err != nil {
 				log.Error("error rebuilding site", "error", err)
 			}
@@ -173,7 +176,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 	}
 
 	loggingMux := http.NewServeMux()
-	mux, err := website.NewMux(config, runtimeConfig.Root)
+	mux, err := website.NewMux(config, runtimeConfig.Root, log.Named("website"))
 	if err != nil {
 		return nil, errors.Wrap(err, "could not create website mux")
 	}
@@ -193,7 +196,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 
 	top.Handle("/",
 		serverHeaderHandler(
-			wrapHandlerWithLogging(loggingMux),
+			wrapHandlerWithLogging(loggingMux, log),
 		),
 	)
 
@@ -218,6 +221,7 @@ func New(runtimeConfig *Config) (*Server, error) {
 			Addr:              listenAddress,
 			Handler:           rMux,
 		},
+		log:           log,
 		config:        config,
 		runtimeConfig: runtimeConfig,
 	}, nil
@@ -240,19 +244,19 @@ func (s *Server) Start() error {
 }
 
 func (s *Server) Stop() chan struct{} {
-	log.Debug("stop called")
+	s.log.Debug("stop called")
 
 	idleConnsClosed := make(chan struct{})
 
 	go func() {
-		log.Debug("shutting down server")
+		s.log.Debug("shutting down server")
 		ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
 		defer cancel()
 		err := s.Server.Shutdown(ctx)
-		log.Debug("server shut down")
+		s.log.Debug("server shut down")
 		if err != nil {
 			// Error from closing listeners, or context timeout:
-			log.Warn("HTTP server Shutdown", "error", err)
+			s.log.Warn("HTTP server Shutdown", "error", err)
 		}
 		close(idleConnsClosed)
 	}()
diff --git a/internal/server/tcp.go b/internal/server/tcp.go
index 4efde7d..12fdeb2 100644
--- a/internal/server/tcp.go
+++ b/internal/server/tcp.go
@@ -5,7 +5,7 @@ import (
 )
 
 func (s *Server) serveTCP() error {
-	l, err := listenfd.GetListener(0, s.Addr)
+	l, err := listenfd.GetListener(0, s.Addr, s.log.Named("tcp.listenfd"))
 	if err != nil {
 		return err
 	}
diff --git a/internal/server/tls.go b/internal/server/tls.go
index 6c48f86..655455c 100644
--- a/internal/server/tls.go
+++ b/internal/server/tls.go
@@ -8,7 +8,6 @@ import (
 	"strconv"
 
 	"go.alanpearce.eu/website/internal/listenfd"
-	"go.alanpearce.eu/website/internal/log"
 
 	"github.com/ardanlabs/conf/v3"
 	"github.com/caddyserver/caddy/v2"
@@ -27,10 +26,10 @@ type redisConfig struct {
 
 func (s *Server) serveTLS() (err error) {
 	var issuer *certmagic.ACMEIssuer
+	log := s.log.Named("tls")
 
 	// setting cfg.Logger is too late somehow
-	certmagic.Default.Logger = log.GetLogger().
-		Named("certmagic")
+	certmagic.Default.Logger = log.GetLogger().Named("certmagic")
 	cfg := certmagic.NewDefault()
 	cfg.DefaultServerName = s.config.Domains[0]
 
@@ -97,6 +96,7 @@ func (s *Server) serveTLS() (err error) {
 	ln, err := listenfd.GetListener(
 		1,
 		net.JoinHostPort(s.runtimeConfig.ListenAddress, strconv.Itoa(s.runtimeConfig.Port)),
+		log.Named("listenfd"),
 	)
 	if err != nil {
 		return errors.Wrap(err, "could not bind plain socket")
@@ -127,6 +127,7 @@ func (s *Server) serveTLS() (err error) {
 		0,
 		net.JoinHostPort(s.runtimeConfig.ListenAddress, strconv.Itoa(s.runtimeConfig.TLSPort)),
 		tlsConfig,
+		log.Named("listenfd"),
 	)
 	if err != nil {
 		return errors.Wrap(err, "could not bind tls socket")
diff --git a/internal/vcs/repository.go b/internal/vcs/repository.go
index 1dbf783..017b3d8 100644
--- a/internal/vcs/repository.go
+++ b/internal/vcs/repository.go
@@ -18,9 +18,10 @@ type Config struct {
 
 type Repository struct {
 	repo *git.Repository
+	log  *log.Logger
 }
 
-func CloneOrUpdate(cfg *Config) (*Repository, error) {
+func CloneOrUpdate(cfg *Config, log *log.Logger) (*Repository, error) {
 	gr, err := git.PlainClone(cfg.LocalPath, false, &git.CloneOptions{
 		URL:      cfg.RemoteURL.String(),
 		Progress: os.Stdout,
@@ -35,6 +36,7 @@ func CloneOrUpdate(cfg *Config) (*Repository, error) {
 		}
 		repo := &Repository{
 			repo: gr,
+			log:  log,
 		}
 		_, err := repo.Update()
 		if err != nil {
@@ -46,18 +48,19 @@ func CloneOrUpdate(cfg *Config) (*Repository, error) {
 
 	return &Repository{
 		repo: gr,
+		log:  log,
 	}, nil
 }
 
 func (r *Repository) Update() (bool, error) {
-	log.Info("updating repository")
+	r.log.Info("updating repository")
 
 	head, err := r.repo.Head()
 	if err != nil {
 		return false, err
 	}
 
-	log.Info("updating from", "rev", head.Hash().String())
+	r.log.Info("updating from", "rev", head.Hash().String())
 	wt, err := r.repo.Worktree()
 	if err != nil {
 		return false, err
@@ -68,7 +71,7 @@ func (r *Repository) Update() (bool, error) {
 	})
 	if err != nil {
 		if errors.Is(err, git.NoErrAlreadyUpToDate) {
-			log.Info("already up-to-date")
+			r.log.Info("already up-to-date")
 
 			return true, nil
 		}
@@ -80,7 +83,7 @@ func (r *Repository) Update() (bool, error) {
 	if err != nil {
 		return false, err
 	}
-	log.Info("updated to", "rev", head.Hash().String())
+	r.log.Info("updated to", "rev", head.Hash().String())
 
 	return true, r.Clean(wt)
 }
diff --git a/internal/website/filemap.go b/internal/website/filemap.go
index 21cd28a..f9ce462 100644
--- a/internal/website/filemap.go
+++ b/internal/website/filemap.go
@@ -79,7 +79,7 @@ func registerFile(urlpath string, fp string) error {
 	return nil
 }
 
-func registerContentFiles(root string) error {
+func registerContentFiles(root string, log *log.Logger) error {
 	err := filepath.WalkDir(root, func(filePath string, f fs.DirEntry, err error) error {
 		if err != nil {
 			return errors.WithMessagef(err, "failed to access path %s", filePath)
diff --git a/internal/website/mux.go b/internal/website/mux.go
index c6992df..ebdf2d0 100644
--- a/internal/website/mux.go
+++ b/internal/website/mux.go
@@ -31,12 +31,14 @@ type webHandler func(http.ResponseWriter, *http.Request) *ihttp.Error
 type WrappedWebHandler struct {
 	config  *config.Config
 	handler webHandler
+	log     *log.Logger
 }
 
-func wrapHandler(cfg *config.Config, webHandler webHandler) WrappedWebHandler {
+func wrapHandler(cfg *config.Config, webHandler webHandler, log *log.Logger) WrappedWebHandler {
 	return WrappedWebHandler{
 		config:  cfg,
 		handler: webHandler,
+		log:     log,
 	}
 }
 
@@ -44,7 +46,7 @@ func (fn WrappedWebHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	defer func() {
 		if fail := recover(); fail != nil {
 			w.WriteHeader(http.StatusInternalServerError)
-			log.Error("runtime panic!", "error", fail)
+			fn.log.Error("runtime panic!", "error", fail)
 		}
 	}()
 	if err := fn.handler(w, r); err != nil {
@@ -60,11 +62,11 @@ func (fn WrappedWebHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func NewMux(cfg *config.Config, root string) (mux *http.ServeMux, err error) {
+func NewMux(cfg *config.Config, root string, log *log.Logger) (mux *http.ServeMux, err error) {
 	mux = &http.ServeMux{}
 
 	log.Debug("registering content files", "root", root)
-	err = registerContentFiles(root)
+	err = registerContentFiles(root, log)
 	if err != nil {
 		return nil, errors.WithMessagef(err, "registering content files")
 	}
@@ -99,7 +101,7 @@ func NewMux(cfg *config.Config, root string) (mux *http.ServeMux, err error) {
 		http.ServeFile(w, r, files[urlPath].alternatives[enc])
 
 		return nil
-	}))
+	}, log))
 
 	var acctResource = "acct:" + cfg.Email
 	me := digit.NewResource(acctResource).
-- 
cgit 1.4.1