Fixed few sonar warnings.

[controller.git] / opendaylight / config / config-manager / src / main / java / org / opendaylight / controller / config / manager / impl / osgi / ModuleFactoryBundleTracker.java

diff --git a/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/ModuleFactoryBundleTracker.java b/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/ModuleFactoryBundleTracker.java
index 05ca43c3e2d88e01ea9458fc15bc621a0cd9daa4..8ca5da282511b88ee4cf5e7ea2887ecfba634b4b 100644 (file)
--- a/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/ModuleFactoryBundleTracker.java
+++ b/opendaylight/config/config-manager/src/main/java/org/opendaylight/controller/config/manager/impl/osgi/ModuleFactoryBundleTracker.java
@@ -7,13 +7,11 @@
  */
 package org.opendaylight.controller.config.manager.impl.osgi;
 
-import static java.lang.String.format;
-
-import java.io.InputStream;
+import com.google.common.annotations.VisibleForTesting;
+import com.google.common.io.Resources;
+import java.io.IOException;
 import java.net.URL;
-import java.util.List;
-
-import org.apache.commons.io.IOUtils;
+import java.nio.charset.StandardCharsets;
 import org.opendaylight.controller.config.spi.ModuleFactory;
 import org.osgi.framework.Bundle;
 import org.osgi.framework.BundleEvent;
@@ -22,7 +20,6 @@ import org.osgi.util.tracker.BundleTrackerCustomizer;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-
 /**
  * OSGi extender that listens for bundle activation events. Reads file
  * META-INF/services/org.opendaylight.controller.config.spi.ModuleFactory, each
@@ -32,52 +29,57 @@ import org.slf4j.LoggerFactory;
  * the services are unregistered automatically.
  * Code based on http://www.toedter.com/blog/?p=236
  */
-public class ModuleFactoryBundleTracker implements BundleTrackerCustomizer<Object> {
+public class ModuleFactoryBundleTracker implements BundleTrackerCustomizer<Boolean> {
     private final BlankTransactionServiceTracker blankTransactionServiceTracker;
-    private static final Logger logger = LoggerFactory.getLogger(ModuleFactoryBundleTracker.class);
+    private static final Logger LOG = LoggerFactory.getLogger(ModuleFactoryBundleTracker.class);
 
     public ModuleFactoryBundleTracker(BlankTransactionServiceTracker blankTransactionServiceTracker) {
         this.blankTransactionServiceTracker = blankTransactionServiceTracker;
     }
 
     @Override
-    public Object addingBundle(Bundle bundle, BundleEvent event) {
+    public Boolean addingBundle(Bundle bundle, BundleEvent event) {
         URL resource = bundle.getEntry("META-INF/services/" + ModuleFactory.class.getName());
-        logger.trace("Got addingBundle event of bundle {}, resource {}, event {}",
+        LOG.trace("Got addingBundle event of bundle {}, resource {}, event {}",
                 bundle, resource, event);
         if (resource != null) {
-            try (InputStream inputStream = resource.openStream()) {
-                List<String> lines = IOUtils.readLines(inputStream);
-                for (String factoryClassName : lines) {
+            try {
+                for (String factoryClassName : Resources.readLines(resource, StandardCharsets.UTF_8)) {
                     registerFactory(factoryClassName, bundle);
                 }
-            } catch (Exception e) {
-                logger.error("Error while reading {}", resource, e);
+
+                return Boolean.TRUE;
+            } catch (IOException e) {
+                LOG.error("Error while reading {}", resource, e);
                 throw new RuntimeException(e);
             }
         }
-        return bundle;
+
+        return Boolean.FALSE;
     }
 
     @Override
-    public void modifiedBundle(Bundle bundle, BundleEvent event, Object object) {
+    public void modifiedBundle(Bundle bundle, BundleEvent event, Boolean hasFactory) {
         // NOOP
     }
 
     @Override
-    public void removedBundle(Bundle bundle, BundleEvent event, Object object) {
-        // workaround for service tracker not getting removed service event
-        blankTransactionServiceTracker.blankTransaction();
+    public void removedBundle(Bundle bundle, BundleEvent event, Boolean hasFactory) {
+        if(hasFactory) {
+            // workaround for service tracker not getting removed service event
+            blankTransactionServiceTracker.blankTransactionSync();
+        }
     }
 
-    // TODO:test
-    private static ServiceRegistration<?> registerFactory(String factoryClassName, Bundle bundle) {
+    @VisibleForTesting
+    protected static ServiceRegistration<?> registerFactory(String factoryClassName, Bundle bundle) {
         String errorMessage;
+        Exception ex = null;
         try {
             Class<?> clazz = bundle.loadClass(factoryClassName);
             if (ModuleFactory.class.isAssignableFrom(clazz)) {
                 try {
-                    logger.debug("Registering {} in bundle {}",
+                    LOG.debug("Registering {} in bundle {}",
                             clazz.getName(), bundle);
                     return bundle.getBundleContext().registerService(
                             ModuleFactory.class.getName(), clazz.newInstance(),
@@ -86,10 +88,12 @@ public class ModuleFactoryBundleTracker implements BundleTrackerCustomizer<Objec
                     errorMessage = logMessage(
                             "Could not instantiate {} in bundle {}, reason {}",
                             factoryClassName, bundle, e);
+                    ex = e;
                 } catch (IllegalAccessException e) {
                     errorMessage = logMessage(
-                            "Illegal access during instatiation of class {} in bundle {}, reason {}",
+                            "Illegal access during instantiation of class {} in bundle {}, reason {}",
                             factoryClassName, bundle, e);
+                    ex = e;
                 }
             } else {
                 errorMessage = logMessage(
@@ -98,15 +102,17 @@ public class ModuleFactoryBundleTracker implements BundleTrackerCustomizer<Objec
             }
         } catch (ClassNotFoundException e) {
             errorMessage = logMessage(
-                    "Could not find class {} in bunde {}, reason {}",
+                    "Could not find class {} in bundle {}, reason {}",
                     factoryClassName, bundle, e);
+            ex = e;
         }
-        throw new IllegalStateException(errorMessage);
+
+        throw ex == null ? new IllegalStateException(errorMessage) : new IllegalStateException(errorMessage, ex);
     }
 
     public static String logMessage(String slfMessage, Object... params) {
-        logger.info(slfMessage, params);
+        LOG.info(slfMessage, params);
         String formatMessage = slfMessage.replaceAll("\\{\\}", "%s");
-        return format(formatMessage, params);
+        return String.format(formatMessage, params);
     }
 }