Merge pull request #158 from wu-sheng/fix/140

fix #140 ,add log bridge from slf4j to log4j that could see logs from http sever start.

skywalking-collector/pom.xml

@@ -36,6 +36,16 @@
             <artifactId>log4j-api</artifactId>
             <version>${log4j.version}</version>
         </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-slf4j-impl</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.apache.logging.log4j</groupId>
+            <artifactId>log4j-jcl</artifactId>
+            <version>${log4j.version}</version>
+        </dependency>
         <dependency>
             <groupId>com.typesafe.akka</groupId>
             <artifactId>akka-testkit_2.11</artifactId>

skywalking-collector/skywalking-collector-cluster/src/main/java/com/a/eye/skywalking/collector/AkkaSystem.java

@@ -18,8 +18,11 @@ public enum AkkaSystem {
 
     public ActorSystem create() {
         final Config config = ConfigFactory.parseString("akka.remote.netty.tcp.HOSTNAME=" + ClusterConfig.Cluster.Current.HOSTNAME).
-            withFallback(ConfigFactory.parseString("akka.remote.netty.tcp.PORT=" + ClusterConfig.Cluster.Current.PORT)).
-            withFallback(ConfigFactory.load("application.conf"));
+                withFallback(ConfigFactory.parseString("akka.remote.netty.tcp.PORT=" + ClusterConfig.Cluster.Current.PORT)).
+                withFallback(ConfigFactory.parseString("akka.loggers=[\"akka.event.slf4j.Slf4jLogger\"]")).
+                withFallback(ConfigFactory.parseString("akka.loglevel=\"ERROR\"")).
+
+                withFallback(ConfigFactory.load("application.conf"));
         if (!StringUtil.isEmpty(ClusterConfig.Cluster.SEED_NODES)) {
             config.withFallback(ConfigFactory.parseString("akka.cluster.seed-nodes=" + generateSeedNodes()));
         }