Added logLevel option (#171)

Author: devgianlu

api/src/main/java/xyz/gianlu/librespot/api/Main.java

@@ -1,5 +1,6 @@
 package xyz.gianlu.librespot.api;
 
+import org.apache.log4j.LogManager;
 import xyz.gianlu.librespot.AbsConfiguration;
 import xyz.gianlu.librespot.FileConfiguration;
 import xyz.gianlu.librespot.core.AuthConfiguration;
@@ -17,6 +18,7 @@ public class Main {
 
     public static void main(String[] args) throws IOException, MercuryClient.MercuryException, GeneralSecurityException, Session.SpotifyAuthenticationException {
         AbsConfiguration conf = new FileConfiguration(args);
+        LogManager.getRootLogger().setLevel(conf.loggingLevel());
 
         SessionWrapper wrapper;
         if (conf.authStrategy() == AuthConfiguration.Strategy.ZEROCONF)

core/src/main/java/xyz/gianlu/librespot/AbsConfiguration.java

@@ -1,6 +1,7 @@
 package xyz.gianlu.librespot;
 
 import com.spotify.connectstate.Connect;
+import org.apache.log4j.Level;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import xyz.gianlu.librespot.api.ApiConfiguration;
@@ -24,4 +25,7 @@ public abstract class AbsConfiguration implements ApiConfiguration, Session.Prox
 
     @NotNull
     public abstract String preferredLocale();
+
+    @NotNull
+    public abstract Level loggingLevel();
 }

core/src/main/java/xyz/gianlu/librespot/FileConfiguration.java

@@ -12,6 +12,7 @@
 import com.electronwill.nightconfig.core.io.ConfigWriter;
 import com.electronwill.nightconfig.toml.TomlParser;
 import com.spotify.connectstate.Connect;
+import org.apache.log4j.Level;
 import org.apache.log4j.Logger;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
@@ -311,6 +312,12 @@ public boolean stopPlaybackOnChunkError() {
         return config.get("preferredLocale");
     }
 
+    @Override
+    public @NotNull Level loggingLevel() {
+        String str = config.get("logLevel");
+        return Level.toLevel(str);
+    }
+
     @Override
     public @Nullable String authUsername() {
         return config.get("auth.username");

core/src/main/java/xyz/gianlu/librespot/Main.java

@@ -1,5 +1,6 @@
 package xyz.gianlu.librespot;
 
+import org.apache.log4j.LogManager;
 import xyz.gianlu.librespot.core.AuthConfiguration;
 import xyz.gianlu.librespot.core.Session;
 import xyz.gianlu.librespot.core.ZeroconfServer;
@@ -15,6 +16,7 @@ public class Main {
 
     public static void main(String[] args) throws IOException, GeneralSecurityException, Session.SpotifyAuthenticationException, MercuryClient.MercuryException {
         AbsConfiguration conf = new FileConfiguration(args);
+        LogManager.getRootLogger().setLevel(conf.loggingLevel());
         if (conf.authStrategy() == AuthConfiguration.Strategy.ZEROCONF) {
             ZeroconfServer.create(conf);
         } else {

core/src/main/resources/default.toml

@@ -1,6 +1,7 @@
 deviceName = "librespot-java" ### Device name ###
 deviceType = "COMPUTER" ### Device type (COMPUTER, TABLET, SMARTPHONE, SPEAKER, TV, AVR, STB, AUDIO_DONGLE, GAME_CONSOLE, CAST_VIDEO, CAST_AUDIO, AUTOMOBILE, WEARABLE, UNKNOWN_SPOTIFY, CAR_THING, UNKNOWN) ###
 preferredLocale = "en" ### Preferred locale ###
+logLevel = "TRACE" ### Log level (OFF, FATAL, ERROR, WARN, INFO, DEBUG, TRACE, ALL) ###
 
 [auth] ### Authentication ###
 strategy = "ZEROCONF" # Strategy (USER_PASS, ZEROCONF, BLOB, FACEBOOK)