remove useless code

broker/src/main/java/io/moquette/BrokerConstants.java

@@ -65,9 +65,6 @@ public final class BrokerConstants {
     public static final String METRICS_LIBRATO_TOKEN_PROPERTY_NAME = "metrics.librato.token";
     public static final String METRICS_LIBRATO_SOURCE_PROPERTY_NAME = "metrics.librato.source";
 
-    public static final String BUGSNAG_ENABLE_PROPERTY_NAME = "use_bugsnag";
-    public static final String BUGSNAG_TOKEN_PROPERTY_NAME = "bugsnag.token";
-
     public static final String STORAGE_CLASS_NAME = "storage_class";
 
     public static final String QINIU_SERVER_URL= "qiniu.server_url";

broker/src/main/java/io/moquette/server/netty/BugSnagErrorsHandler.java

@@ -1,41 +0,0 @@
-/*
- * Copyright (c) 2012-2017 The original author or authors
- * ------------------------------------------------------
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Eclipse Public License v1.0
- * and Apache License v2.0 which accompanies this distribution.
- *
- * The Eclipse Public License is available at
- * http://www.eclipse.org/legal/epl-v10.html
- *
- * The Apache License v2.0 is available at
- * http://www.opensource.org/licenses/apache2.0.php
- *
- * You may elect to redistribute this code under either of these licenses.
- */
-package io.moquette.server.netty;
-
-import com.bugsnag.Bugsnag;
-import io.moquette.server.config.IConfig;
-import io.netty.channel.ChannelHandler.Sharable;
-import io.netty.channel.ChannelHandlerContext;
-import io.netty.channel.ChannelInboundHandlerAdapter;
-
-import static io.moquette.BrokerConstants.BUGSNAG_TOKEN_PROPERTY_NAME;
-
-@Sharable
-public class BugSnagErrorsHandler extends ChannelInboundHandlerAdapter {
-
-    private Bugsnag bugsnag;
-
-    public void init(IConfig props) {
-        final String token = props.getProperty(BUGSNAG_TOKEN_PROPERTY_NAME);
-        this.bugsnag = new Bugsnag(token);
-    }
-
-    @Override
-    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
-        bugsnag.notify(cause);
-        ctx.fireExceptionCaught(cause);
-    }
-}

broker/src/main/java/io/moquette/server/netty/NettyAcceptor.java

@@ -148,14 +148,8 @@ public class NettyAcceptor implements ServerAcceptor {
             this.metrics = Optional.empty();
         }
 
-        final boolean useBugSnag = Boolean.parseBoolean(props.getProperty(BUGSNAG_ENABLE_PROPERTY_NAME, "false"));
-        if (useBugSnag) {
-            BugSnagErrorsHandler bugSnagHandler = new BugSnagErrorsHandler();
-            bugSnagHandler.init(props);
-            this.errorsCather = Optional.of(bugSnagHandler);
-        } else {
-            this.errorsCather = Optional.empty();
-        }
+        this.errorsCather = Optional.empty();
+
         initializePlainTCPTransport(mqttHandler, props);
         initializeWebSocketTransport(mqttHandler, props);
         String sslTcpPortProp = props.getProperty(BrokerConstants.SSL_PORT_PROPERTY_NAME);