Pull request 2242: 7079-log-enabled

Updates #7079.

Squashed commit of the following:

commit 477c5ed29c8066dc9cb175809572f613b2a0dfa0
Merge: d3c64e03a 647214092
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Jun 20 19:31:54 2024 +0300

    Merge branch 'master' into 7079-log-enabled

commit d3c64e03a514e39d70e6b79209be1f8cf052a25d
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Jun 20 16:02:42 2024 +0300

    home: imp docs

commit 7658c9b107f109c391b6bd5407098e8e53754842
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Jun 20 14:17:08 2024 +0300

    all: log enabled

CHANGELOG.md

@@ -27,6 +27,11 @@ See also the [v0.107.52 GitHub milestone][ms-v0.107.52].
 NOTE: Add new changes BELOW THIS COMMENT.
 -->
 
+### Added
+
+- The ability to disable logging using the new `log.enabled` configuration
+  property ([#7079]).
+
 ### Changed
 
 - Frontend rewritten in TypeScript.
@@ -59,6 +64,7 @@ NOTE: Add new changes BELOW THIS COMMENT.
 [#7053]: https://github.com/AdguardTeam/AdGuardHome/issues/7053
 [#7069]: https://github.com/AdguardTeam/AdGuardHome/issues/7069
 [#7076]: https://github.com/AdguardTeam/AdGuardHome/issues/7076
+[#7079]: https://github.com/AdguardTeam/AdGuardHome/issues/7079
 
 [install-script]: https://github.com/AdguardTeam/AdGuardHome/?tab=readme-ov-file#automated-install-linux-and-mac
 

internal/home/config.go

@@ -32,6 +32,9 @@ const dataDir = "data"
 
 // logSettings are the logging settings part of the configuration file.
 type logSettings struct {
+	// Enabled indicates whether logging is enabled.
+	Enabled bool `yaml:"enabled"`
+
 	// File is the path to the log file.  If empty, logs are written to stdout.
 	// If "syslog", logs are written to syslog.
 	File string `yaml:"file"`
@@ -454,11 +457,14 @@ var config = &configuration{
 		},
 	},
 	Log: logSettings{
-		Compress:   false,
-		LocalTime:  false,
+		Enabled:    true,
+		File:       "",
 		MaxBackups: 0,
 		MaxSize:    100,
 		MaxAge:     3,
+		Compress:   false,
+		LocalTime:  false,
+		Verbose:    false,
 	},
 	OSConfig:      &osConfig{},
 	SchemaVersion: configmigrate.LastSchemaVersion,

internal/home/log.go

@@ -21,7 +21,9 @@ func configureLogger(opts options) (err error) {
 	ls := getLogSettings(opts)
 
 	// Configure logger level.
-	if ls.Verbose {
+	if !ls.Enabled {
+		log.SetLevel(log.OFF)
+	} else if ls.Verbose {
 		log.SetLevel(log.DEBUG)
 	}
 
@@ -91,7 +93,14 @@ func getLogSettings(opts options) (ls *logSettings) {
 // separate method in order to configure logger before the actual configuration
 // is parsed and applied.
 func readLogSettings() (ls *logSettings) {
-	conf := &configuration{}
+	// TODO(s.chzhen):  Add a helper function that returns default parameters
+	// for this structure and for the global configuration structure [config].
+	conf := &configuration{
+		Log: logSettings{
+			// By default, it is true if the property does not exist.
+			Enabled: true,
+		},
+	}
 
 	yamlFile, err := readConfigFile()
 	if err != nil {