Add option to disable access logging (#107)

For an internally-facing and/or test/qa deployment, web access logs may
be a waste of stackdriver/cloudwatch quota. :)

build/config.yaml

@@ -5,6 +5,7 @@ RedisHost: localhost:6379 # If using the redis backend, a host:port combination
 RedisPassword: replace me # if using the redis backend, a conneciton password.
 DataDir: ./data # Contains: the database and the private key
 EnableDebugMode: true # Activates more detailed logging
+EnableAccessLogs: true # Enable GIN access logs (default is true; set to false to disable access logging)
 EnableColorLogs: true # Enables/disables ANSI color sequences in log output; default is true
 ShortedIDLength: 10 # Length of the random generated ID which is used for new shortened URLs
 AuthBackend: oauth # Can be 'oauth' or 'proxy'

handlers/handlers.go

@@ -134,11 +134,15 @@ func (h *Handler) setHandlers() error {
 	if err := h.addTemplatesFromFS([]string{"token.html", "protected.html"}); err != nil {
 		return errors.Wrap(err, "could not add templates from FS")
 	}
-	if !util.GetConfig().EnableDebugMode {
+	// only do web access logs if enabled
+	if util.GetConfig().EnableAccessLogs {
+		if util.GetConfig().EnableDebugMode {
+			// in debug mode, log everything including healthchecks
+			h.engine.Use(Ginrus(logrus.StandardLogger(), time.RFC3339, false))
+		} else {
 			// if we are not in debug mode, do not log healthchecks
 			h.engine.Use(Ginrus(logrus.StandardLogger(), time.RFC3339, false, "/ok"))
-	} else {
+		}
-		h.engine.Use(Ginrus(logrus.StandardLogger(), time.RFC3339, false))
 	}
 	protected := h.engine.Group("/api/v1/protected")
 	if util.GetConfig().AuthBackend == "oauth" {

util/config.go

@@ -23,6 +23,7 @@ type Configuration struct {
 	AuthBackend      string        `yaml:"AuthBackend" env:"AUTH_BACKEND"`
 	UseSSL           bool          `yaml:"EnableSSL" env:"USE_SSL"`
 	EnableDebugMode  bool          `yaml:"EnableDebugMode" env:"ENABLE_DEBUG_MODE"`
+	EnableAccessLogs bool          `yaml:"EnableAccessLogs" env:"ENABLE_ACCESS_LOGS"`
 	EnableColorLogs  bool          `yaml:"EnableColorLogs" env:"ENABLE_COLOR_LOGS"`
 	ShortedIDLength  int           `yaml:"ShortedIDLength" env:"SHORTED_ID_LENGTH"`
 	Google           oAuthConf     `yaml:"Google" env:"GOOGLE"`
@@ -49,6 +50,7 @@ var Config = Configuration{
 	DataDir:          "data",
 	Backend:          "boltdb",
 	EnableDebugMode:  false,
+	EnableAccessLogs: true,
 	EnableColorLogs:  true,
 	UseSSL:           false,
 	ShortedIDLength:  4,