Initial push of Neutron interface
[controller.git] / opendaylight / networkconfiguration / neutron / implementation / src / main / java / org / opendaylight / controller / networkconfig / neutron / implementation / NeutronNetworkInterface.java
diff --git a/opendaylight/networkconfiguration/neutron/implementation/src/main/java/org/opendaylight/controller/networkconfig/neutron/implementation/NeutronNetworkInterface.java b/opendaylight/networkconfiguration/neutron/implementation/src/main/java/org/opendaylight/controller/networkconfig/neutron/implementation/NeutronNetworkInterface.java
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+/*\r
+ * Copyright IBM Corporation, 2013.  All rights reserved.\r
+ *\r
+ * This program and the accompanying materials are made available under the\r
+ * terms of the Eclipse Public License v1.0 which accompanies this distribution,\r
+ * and is available at http://www.eclipse.org/legal/epl-v10.html\r
+ */\r
+\r
+package org.opendaylight.controller.networkconfig.neutron.implementation;\r
+\r
+import java.lang.reflect.Method;\r
+import java.util.ArrayList;\r
+import java.util.Dictionary;\r
+import java.util.EnumSet;\r
+import java.util.HashSet;\r
+import java.util.Iterator;\r
+import java.util.List;\r
+import java.util.Set;\r
+import java.util.Map.Entry;\r
+import java.util.concurrent.ConcurrentMap;\r
+\r
+import org.apache.felix.dm.Component;\r
+import org.opendaylight.controller.clustering.services.CacheConfigException;\r
+import org.opendaylight.controller.clustering.services.CacheExistException;\r
+import org.opendaylight.controller.clustering.services.IClusterContainerServices;\r
+import org.opendaylight.controller.clustering.services.IClusterServices;\r
+import org.opendaylight.controller.networkconfig.neutron.INeutronNetworkCRUD;\r
+import org.opendaylight.controller.networkconfig.neutron.NeutronNetwork;\r
+import org.slf4j.Logger;\r
+import org.slf4j.LoggerFactory;\r
+\r
+public class NeutronNetworkInterface implements INeutronNetworkCRUD {\r
+    private static final Logger logger = LoggerFactory.getLogger(NeutronNetworkInterface.class);\r
+    private String containerName = null;\r
+\r
+    private ConcurrentMap<String, NeutronNetwork> networkDB;\r
+    private IClusterContainerServices clusterContainerService = null;\r
+\r
+    // methods needed for creating caches\r
+\r
+    void setClusterContainerService(IClusterContainerServices s) {\r
+        logger.debug("Cluster Service set");\r
+        this.clusterContainerService = s;\r
+    }\r
+\r
+    void unsetClusterContainerService(IClusterContainerServices s) {\r
+        if (this.clusterContainerService == s) {\r
+            logger.debug("Cluster Service removed!");\r
+            this.clusterContainerService = null;\r
+        }\r
+    }\r
+\r
+    @SuppressWarnings("deprecation")\r
+    private void allocateCache() {\r
+        if (this.clusterContainerService == null) {\r
+            logger.error("un-initialized clusterContainerService, can't create cache");\r
+            return;\r
+        }\r
+        logger.debug("Creating Cache for Neutron Networks");\r
+        try {\r
+            // neutron caches\r
+            this.clusterContainerService.createCache("neutronNetworks",\r
+                    EnumSet.of(IClusterServices.cacheMode.NON_TRANSACTIONAL));\r
+        } catch (CacheConfigException cce) {\r
+            logger.error("Cache couldn't be created for Neutron Networks -  check cache mode");\r
+        } catch (CacheExistException cce) {\r
+            logger.error("Cache for Neutron Networks already exists, destroy and recreate");\r
+        }\r
+        logger.debug("Cache successfully created for Neutron Networks");\r
+    }\r
+\r
+    @SuppressWarnings({ "unchecked", "deprecation" })\r
+    private void retrieveCache() {\r
+        if (this.clusterContainerService == null) {\r
+            logger.error("un-initialized clusterContainerService, can't retrieve cache");\r
+            return;\r
+        }\r
+        logger.debug("Retrieving cache for Neutron Networks");\r
+        networkDB = (ConcurrentMap<String, NeutronNetwork>) this.clusterContainerService.getCache("neutronNetworks");\r
+        if (networkDB == null) {\r
+            logger.error("Cache couldn't be retrieved for Neutron Networks");\r
+        }\r
+        logger.debug("Cache was successfully retrieved for Neutron Networks");\r
+    }\r
+\r
+    private void startUp() {\r
+        allocateCache();\r
+        retrieveCache();\r
+    }\r
+\r
+    /**\r
+     * Function called by the dependency manager when all the required\r
+     * dependencies are satisfied\r
+     *\r
+     */\r
+    void init(Component c) {\r
+        Dictionary<?, ?> props = c.getServiceProperties();\r
+        if (props != null) {\r
+            this.containerName = (String) props.get("containerName");\r
+            logger.debug("Running containerName: {}", this.containerName);\r
+        } else {\r
+            // In the Global instance case the containerName is empty\r
+            this.containerName = "";\r
+        }\r
+        startUp();\r
+    }\r
+\r
+    @SuppressWarnings("deprecation")\r
+    private void destroyCache() {\r
+        if (this.clusterContainerService == null) {\r
+            logger.error("un-initialized clusterMger, can't destroy cache");\r
+            return;\r
+        }\r
+        logger.debug("Destroying Cache for Neutron Networks");\r
+        this.clusterContainerService.destroyCache("Neutron Networks");\r
+    }\r
+\r
+    /**\r
+     * Function called by the dependency manager when at least one dependency\r
+     * become unsatisfied or when the component is shutting down because for\r
+     * example bundle is being stopped.\r
+     *\r
+     */\r
+    void destroy() {\r
+        destroyCache();\r
+    }\r
+\r
+    /**\r
+     * Function called by dependency manager after "init ()" is called and after\r
+     * the services provided by the class are registered in the service registry\r
+     *\r
+     */\r
+    void start() {\r
+    }\r
+\r
+    /**\r
+     * Function called by the dependency manager before the services exported by\r
+     * the component are unregistered, this will be followed by a "destroy ()"\r
+     * calls\r
+     *\r
+     */\r
+    void stop() {\r
+    }\r
+\r
+    // this method uses reflection to update an object from it's delta.\r
+\r
+    private boolean overwrite(Object target, Object delta) {\r
+        Method[] methods = target.getClass().getMethods();\r
+\r
+        for(Method toMethod: methods){\r
+            if(toMethod.getDeclaringClass().equals(target.getClass())\r
+                    && toMethod.getName().startsWith("set")){\r
+\r
+                String toName = toMethod.getName();\r
+                String fromName = toName.replace("set", "get");\r
+\r
+                try {\r
+                    Method fromMethod = delta.getClass().getMethod(fromName);\r
+                    Object value = fromMethod.invoke(delta, (Object[])null);\r
+                    if(value != null){\r
+                        toMethod.invoke(target, value);\r
+                    }\r
+                } catch (Exception e) {\r
+                    e.printStackTrace();\r
+                    return false;\r
+                }\r
+            }\r
+        }\r
+        return true;\r
+    }\r
+\r
+    // IfNBNetworkCRUD methods\r
+\r
+    public boolean networkExists(String uuid) {\r
+        return networkDB.containsKey(uuid);\r
+    }\r
+\r
+    public NeutronNetwork getNetwork(String uuid) {\r
+        if (!networkExists(uuid))\r
+            return null;\r
+        return networkDB.get(uuid);\r
+    }\r
+\r
+    public List<NeutronNetwork> getAllNetworks() {\r
+        Set<NeutronNetwork> allNetworks = new HashSet<NeutronNetwork>();\r
+        for (Entry<String, NeutronNetwork> entry : networkDB.entrySet()) {\r
+            NeutronNetwork network = entry.getValue();\r
+            allNetworks.add(network);\r
+        }\r
+        logger.debug("Exiting getAllNetworks, Found {} OpenStackNetworks", allNetworks.size());\r
+        List<NeutronNetwork> ans = new ArrayList<NeutronNetwork>();\r
+        ans.addAll(allNetworks);\r
+        return ans;\r
+    }\r
+\r
+    public boolean addNetwork(NeutronNetwork input) {\r
+        if (networkExists(input.getID()))\r
+            return false;\r
+        networkDB.putIfAbsent(input.getID(), input);\r
+      //TODO: add code to find INeutronNetworkAware services and call newtorkCreated on them\r
+        return true;\r
+    }\r
+\r
+    public boolean removeNetwork(String uuid) {\r
+        if (!networkExists(uuid))\r
+            return false;\r
+        networkDB.remove(uuid);\r
+      //TODO: add code to find INeutronNetworkAware services and call newtorkDeleted on them\r
+        return true;\r
+    }\r
+\r
+    public boolean updateNetwork(String uuid, NeutronNetwork delta) {\r
+        if (!networkExists(uuid))\r
+            return false;\r
+        NeutronNetwork target = networkDB.get(uuid);\r
+        return overwrite(target, delta);\r
+    }\r
+\r
+    public boolean networkInUse(String netUUID) {\r
+        if (!networkExists(netUUID))\r
+            return true;\r
+        NeutronNetwork target = networkDB.get(netUUID);\r
+        if (target.getPortsOnNetwork().size() > 0)\r
+            return true;\r
+        return false;\r
+    }\r
+}\r