[breaking-change] Remove the log-level config option.

This reverts commit 351d0a0c85.

This option does not have any effect at the moment and may potentially
confuse users. It can be easily reintroduced later (by reverting this
commit) once we start logging at any level other than `info`.

conf/config.example.toml

@@ -2,7 +2,6 @@
 # as the intrinsic default value.
 
 log-format = "text"
-log-level = "info"
 
 [server]
 # Use "-" to disable the handler.

src/config.go

@@ -63,7 +63,6 @@ type Config struct {
 	Insecure      bool                `toml:"-" env:"insecure"`
 	Features      []string            `toml:"features"`
 	LogFormat     string              `toml:"log-format" default:"text"`
-	LogLevel      string              `toml:"log-level" default:"info"`
 	Server        ServerConfig        `toml:"server"`
 	Wildcard      []WildcardConfig    `toml:"wildcard"`
 	Fallback      FallbackConfig      `toml:"fallback"`

src/observe.go

@@ -13,7 +13,6 @@ import (
 	"os"
 	"runtime/debug"
 	"strconv"
-	"strings"
 	"sync"
 	"time"
 
@@ -62,29 +61,15 @@ func InitObservability() {
 
 	logHandlers := []slog.Handler{}
 
-	logLevel := slog.LevelInfo
-	switch strings.ToLower(config.LogLevel) {
-	case "debug":
-		logLevel = slog.LevelDebug
-	case "info":
-		logLevel = slog.LevelInfo
-	case "warn":
-		logLevel = slog.LevelWarn
-	case "error":
-		logLevel = slog.LevelError
-	default:
-		log.Println("unknown log level", config.LogLevel)
-	}
-
 	switch config.LogFormat {
 	case "none":
 		// nothing to do
 	case "text":
 		logHandlers = append(logHandlers,
-			slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{Level: logLevel}))
+			slog.NewTextHandler(os.Stderr, &slog.HandlerOptions{}))
 	case "json":
 		logHandlers = append(logHandlers,
-			slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{Level: logLevel}))
+			slog.NewJSONHandler(os.Stderr, &slog.HandlerOptions{}))
 	default:
 		log.Println("unknown log format", config.LogFormat)
 	}
@@ -93,7 +78,6 @@ func InitObservability() {
 		var err error
 		syslogHandler, err = syslog.NewHandler(&syslog.HandlerOptions{
 			Address:          syslogAddr,
-			Level:            logLevel,
 			AppName:          "git-pages",
 			StructuredDataID: "git-pages",
 		})
@@ -154,7 +138,6 @@ func InitObservability() {
 		if enableLogs {
 			logHandlers = append(logHandlers, sentryslog.Option{
 				AddSource: true,
-				LogLevel:  levelsFromMinimum(logLevel),
 			}.NewSentryHandler(context.Background()))
 		}
 	}
@@ -162,18 +145,6 @@ func InitObservability() {
 	slog.SetDefault(slog.New(slogmulti.Fanout(logHandlers...)))
 }
 
-// From sentryslog, because for some reason they don't make it public.
-func levelsFromMinimum(minLevel slog.Level) []slog.Level {
-	allLevels := []slog.Level{slog.LevelDebug, slog.LevelInfo, slog.LevelWarn, slog.LevelError, sentryslog.LevelFatal}
-	var result []slog.Level
-	for _, level := range allLevels {
-		if level >= minLevel {
-			result = append(result, level)
-		}
-	}
-	return result
-}
-
 func FiniObservability() {
 	var wg sync.WaitGroup
 	timeout := 2 * time.Second