Add Karaf 4 features

[controller.git] / opendaylight / config / config-persister-feature4-adapter / src / main / java / org / opendaylight / controller / configpusherfeature / internal / FeatureServiceCustomizer.java

diff --git a/opendaylight/config/config-persister-feature4-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/FeatureServiceCustomizer.java b/opendaylight/config/config-persister-feature4-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/FeatureServiceCustomizer.java
new file mode 100644 (file)
index 0000000..0b3493c
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+++ b/opendaylight/config/config-persister-feature4-adapter/src/main/java/org/opendaylight/controller/configpusherfeature/internal/FeatureServiceCustomizer.java
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
+ *
+ * This program and the accompanying materials are made available under the
+ * 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.configpusherfeature.internal;
+
+import com.google.common.base.Optional;
+import com.google.common.collect.Sets;
+
+import java.util.Set;
+
+import org.apache.karaf.features.Feature;
+import org.apache.karaf.features.FeaturesListener;
+import org.apache.karaf.features.FeaturesService;
+import org.opendaylight.controller.config.persist.api.ConfigPusher;
+import org.opendaylight.controller.config.persist.storage.file.xml.FeatureListProvider;
+import org.opendaylight.controller.config.persist.storage.file.xml.XmlFileStorageAdapter;
+import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.framework.ServiceRegistration;
+import org.osgi.util.tracker.ServiceTrackerCustomizer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class FeatureServiceCustomizer implements ServiceTrackerCustomizer<FeaturesService, FeaturesService>, AutoCloseable {
+    private static final Logger LOG = LoggerFactory.getLogger(FeatureServiceCustomizer.class);
+    private ConfigPusher configPusher = null;
+    private ServiceRegistration<?> registration;
+
+    FeatureServiceCustomizer(ConfigPusher c) {
+        configPusher = c;
+    }
+
+    @Override
+    public FeaturesService addingService(ServiceReference<FeaturesService> reference) {
+        BundleContext bc = reference.getBundle().getBundleContext();
+        final FeaturesService featureService = bc.getService(reference);
+        final Optional<XmlFileStorageAdapter> currentPersister = XmlFileStorageAdapter.getInstance();
+
+        if (XmlFileStorageAdapter.getInstance().isPresent()) {
+            final Set<String> installedFeatureIds = Sets.newHashSet();
+            try {
+                for (final Feature installedFeature : featureService.listInstalledFeatures()) {
+                    installedFeatureIds.add(installedFeature.getId());
+                }
+            } catch (Exception e) {
+                LOG.error("Error listing installed features", e);
+            }
+
+            currentPersister.get().setFeaturesService(new FeatureListProvider() {
+                @Override
+                public Set<String> listFeatures() {
+                    return installedFeatureIds;
+                }
+            });
+        }
+        ConfigFeaturesListener configFeaturesListener = new ConfigFeaturesListener(configPusher, featureService);
+        registration = bc.registerService(FeaturesListener.class.getCanonicalName(), configFeaturesListener, null);
+        return featureService;
+    }
+
+    @Override
+    public void modifiedService(ServiceReference<FeaturesService> reference,
+                                FeaturesService service) {
+        // we don't care if the properties change
+    }
+
+    @Override
+    public void removedService(ServiceReference<FeaturesService> reference,
+                               FeaturesService service) {
+        close();
+    }
+
+    @Override
+    public void close() {
+        if (registration != null) {
+            registration.unregister();
+            registration = null;
+        }
+    }
+}