Turn FileAkkaConfigurationReader into a component

[controller.git] / opendaylight / md-sal / sal-clustering-commons / src / main / java / org / opendaylight / controller / cluster / common / actor / FileAkkaConfigurationReader.java

diff --git a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/common/actor/FileAkkaConfigurationReader.java b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/common/actor/FileAkkaConfigurationReader.java
index 1e3adf9d391051ef2173de187004c3c6edaa6e40..7951f5d3cc887113adaf8d5120e96415af251087 100644 (file)
--- a/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/common/actor/FileAkkaConfigurationReader.java
+++ b/opendaylight/md-sal/sal-clustering-commons/src/main/java/org/opendaylight/controller/cluster/common/actor/FileAkkaConfigurationReader.java
@@ -5,28 +5,49 @@
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
  */
-
 package org.opendaylight.controller.cluster.common.actor;
 
-import com.google.common.base.Preconditions;
+import static com.google.common.base.Preconditions.checkState;
+
 import com.typesafe.config.Config;
 import com.typesafe.config.ConfigFactory;
 import java.io.File;
+import javax.inject.Singleton;
+import org.kohsuke.MetaInfServices;
+import org.osgi.service.component.annotations.Activate;
+import org.osgi.service.component.annotations.Component;
+import org.osgi.service.component.annotations.Deactivate;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+@Component(immediate = true)
+@MetaInfServices
+@Singleton
 public class FileAkkaConfigurationReader implements AkkaConfigurationReader {
+    private static final Logger LOG = LoggerFactory.getLogger(FileAkkaConfigurationReader.class);
     private static final String CUSTOM_AKKA_CONF_PATH = "./configuration/initial/akka.conf";
     private static final String FACTORY_AKKA_CONF_PATH = "./configuration/factory/akka.conf";
 
     @Override
     public Config read() {
         File customConfigFile = new File(CUSTOM_AKKA_CONF_PATH);
-        Preconditions.checkState(customConfigFile.exists(), "%s is missing", customConfigFile);
+        checkState(customConfigFile.exists(), "%s is missing", customConfigFile);
 
         File factoryConfigFile = new File(FACTORY_AKKA_CONF_PATH);
-        if(factoryConfigFile.exists()) {
+        if (factoryConfigFile.exists()) {
             return ConfigFactory.parseFile(customConfigFile).withFallback(ConfigFactory.parseFile(factoryConfigFile));
         }
 
         return ConfigFactory.parseFile(customConfigFile);
     }
+
+    @Activate
+    void activate() {
+        LOG.info("File-based Akka configuration reader enabled");
+    }
+
+    @Deactivate
+    void deactivate() {
+        LOG.info("File-based Akka configuration reader disabled");
+    }
 }