SDN-R add updated devicemanager
[ccsdk/features.git] / sdnr / wt / devicemanager / provider / src / main / java / org / onap / ccsdk / features / sdnr / wt / devicemanager / impl / DeviceManagerNetconfConnectHandler.java
diff --git a/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerNetconfConnectHandler.java b/sdnr/wt/devicemanager/provider/src/main/java/org/onap/ccsdk/features/sdnr/wt/devicemanager/impl/DeviceManagerNetconfConnectHandler.java
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+/*******************************************************************************
+ * ============LICENSE_START========================================================================
+ * ONAP : ccsdk feature sdnr wt
+ * =================================================================================================
+ * Copyright (C) 2019 highstreet technologies GmbH Intellectual Property. All rights reserved.
+ * =================================================================================================
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software distributed under the License
+ * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
+ * or implied. See the License for the specific language governing permissions and limitations under
+ * the License.
+ * ============LICENSE_END==========================================================================
+ ******************************************************************************/
+
+package org.onap.ccsdk.features.sdnr.wt.devicemanager.impl;
+
+import java.util.List;
+import java.util.Optional;
+import java.util.concurrent.ConcurrentHashMap;
+import org.eclipse.jdt.annotation.NonNull;
+import org.onap.ccsdk.features.sdnr.wt.common.HtAssert;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.devicemonitor.impl.DeviceMonitor;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.impl.handler.ODLEventListenerHandler;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.ne.factory.NetworkElementFactory;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.ne.service.NetworkElement;
+import org.onap.ccsdk.features.sdnr.wt.devicemanager.service.DeviceManagerServiceProvider;
+import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.NetconfAccessor;
+import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.NetconfNodeConnectListener;
+import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.NetconfNodeStateListener;
+import org.onap.ccsdk.features.sdnr.wt.netconfnodestateservice.NetconfNodeStateService;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNode;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.netconf.node.topology.rev150114.NetconfNodeConnectionStatus.ConnectionStatus;
+import org.opendaylight.yang.gen.v1.urn.tbd.params.xml.ns.yang.network.topology.rev131021.NodeId;
+import org.opendaylight.yangtools.concepts.ListenerRegistration;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class DeviceManagerNetconfConnectHandler implements NetconfNodeConnectListener, NetconfNodeStateListener {
+
+    private static final Logger LOG = LoggerFactory.getLogger(DeviceManagerNetconfConnectHandler.class);
+
+    private final @NonNull ListenerRegistration<DeviceManagerNetconfConnectHandler> registerNetconfNodeConnectListener;
+    private final @NonNull ListenerRegistration<NetconfNodeStateListener> registerNetconfNodeStateListener;
+
+    private final @NonNull ODLEventListenerHandler odlEventListenerHandler;
+    private final @NonNull DeviceMonitor deviceMonitor;
+    private final @NonNull List<MyNetworkElementFactory<? extends NetworkElementFactory>> factoryList;
+    private final @NonNull DeviceManagerServiceProvider serviceProvider;
+
+    private final Object networkelementLock;
+    private final ConcurrentHashMap<String, NetworkElement> networkElementRepresentations;
+
+    public DeviceManagerNetconfConnectHandler(@NonNull NetconfNodeStateService netconfNodeStateService,
+            @NonNull ODLEventListenerHandler odlEventListenerHandler, @NonNull DeviceMonitor deviceMonitor,
+            @NonNull DeviceManagerServiceProvider serviceProvider,
+            @NonNull List<MyNetworkElementFactory<? extends NetworkElementFactory>> factoryList) {
+
+        HtAssert.nonnull(netconfNodeStateService, this.odlEventListenerHandler = odlEventListenerHandler,
+                this.deviceMonitor = deviceMonitor, this.serviceProvider = serviceProvider,
+                this.factoryList = factoryList);
+
+        this.networkelementLock = new Object();
+        this.networkElementRepresentations = new ConcurrentHashMap<>();
+
+        this.registerNetconfNodeConnectListener = netconfNodeStateService.registerNetconfNodeConnectListener(this);
+        this.registerNetconfNodeStateListener = netconfNodeStateService.registerNetconfNodeStateListener(this);
+    }
+
+    @Override
+    public void onEnterConnected(@NonNull NetconfAccessor acessor) {
+        //@NonNull NodeId nNodeId, @NonNull NetconfNode netconfNode,
+        //@NonNull MountPoint mountPoint, @NonNull DataBroker netconfNodeDataBroker
+        String mountPointNodeName = acessor.getNodeId().getValue();
+        LOG.info("onEnterConnected - starting Event listener on Netconf for mountpoint {}", mountPointNodeName);
+
+        LOG.info("Master mountpoint {}", mountPointNodeName);
+
+        // It is master for mountpoint and all data are available.
+        // Make sure that specific mountPointNodeName is handled only once.
+        // be aware that startListenerOnNodeForConnectedState could be called multiple
+        // times for same mountPointNodeName.
+        // networkElementRepresentations contains handled NEs at master node.
+
+        synchronized (networkelementLock) {
+            if (networkElementRepresentations.containsKey(mountPointNodeName)) {
+                LOG.warn("Mountpoint {} already registered. Leave startup procedure.", mountPointNodeName);
+                return;
+            }
+        }
+        // update db with connect status
+        NetconfNode netconfNode = acessor.getNetconfNode();
+        sendUpdateNotification(mountPointNodeName, netconfNode.getConnectionStatus(), netconfNode);
+
+        for ( MyNetworkElementFactory<? extends NetworkElementFactory> f : factoryList) {
+            Optional<NetworkElement> optionalNe = f.getFactory().create(acessor, serviceProvider);
+            if (optionalNe.isPresent()) {
+                // sendUpdateNotification(mountPointNodeName, nNode.getConnectionStatus(), nNode);
+                NetworkElement inNe = optionalNe.get();
+                LOG.info("NE Management for {} with {}", mountPointNodeName, inNe.getClass().getName());
+                putToNetworkElementRepresentations(mountPointNodeName, inNe);
+                deviceMonitor.deviceConnectMasterIndication(mountPointNodeName, inNe);
+
+                inNe.register();
+                break; // Use the first provided
+            }
+        }
+    }
+
+    @Override
+    public void onLeaveConnected(@NonNull NodeId nNodeId, @NonNull Optional<NetconfNode> optionalNetconfNode) {
+
+        LOG.info("onLeaveConnected {}", nNodeId);
+        String mountPointNodeName = nNodeId.getValue();
+
+        if (optionalNetconfNode.isPresent()) {
+            NetconfNode nNode = optionalNetconfNode.get();
+            ConnectionStatus csts = nNode.getConnectionStatus();
+            sendUpdateNotification(mountPointNodeName, csts, nNode);
+        }
+
+        // Handling if mountpoint exist. connected -> connecting/UnableToConnect
+        stopListenerOnNodeForConnectedState(mountPointNodeName);
+        deviceMonitor.deviceDisconnectIndication(mountPointNodeName);
+    }
+
+    @Override
+    public void onCreated(NodeId nNodeId, NetconfNode netconfNode) {
+        LOG.info("onCreated {}", nNodeId);
+    }
+
+    @Override
+    public void onStateChange(NodeId nNodeId, NetconfNode netconfNode) {
+        LOG.info("onStateChange {}", nNodeId);
+    }
+
+    @Override
+    public void onRemoved(NodeId nNodeId) {
+        String mountPointNodeName = nNodeId.getValue();
+        LOG.info("mountpointNodeRemoved {}", nNodeId.getValue());
+
+        stopListenerOnNodeForConnectedState(mountPointNodeName);
+        deviceMonitor.removeMountpointIndication(mountPointNodeName);
+        odlEventListenerHandler.deRegistration(mountPointNodeName); //Additional indication for log
+    }
+
+    @Override
+    public void close() {
+         registerNetconfNodeConnectListener.close();
+         registerNetconfNodeStateListener.close();
+    }
+
+    /*--------------------------------------------
+     * Private functions
+     */
+
+    /**
+     * Do all tasks necessary to move from mountpoint state connected -> connecting
+     * @param mountPointNodeName provided
+     * @param ne representing the device connected to mountpoint
+     */
+    private void stopListenerOnNodeForConnectedState( String mountPointNodeName) {
+        NetworkElement ne = networkElementRepresentations.remove(mountPointNodeName);
+        if (ne != null) {
+            ne.deregister();
+        }
+    }
+
+    private void putToNetworkElementRepresentations(String mountPointNodeName, NetworkElement ne) {
+        NetworkElement result;
+        synchronized (networkelementLock) {
+            result = networkElementRepresentations.put(mountPointNodeName, ne);
+        }
+        if (result != null) {
+            LOG.warn("NE list was not empty as expected, but contained {} ", result.getNodeId());
+        } else {
+            odlEventListenerHandler.connectIndication(mountPointNodeName, ne.getDeviceType());
+        }
+    }
+
+    private void sendUpdateNotification(String mountPointNodeName, ConnectionStatus csts, NetconfNode nNode) {
+        LOG.info("update ConnectedState for device :: Name : {} ConnectionStatus {}", mountPointNodeName, csts);
+        odlEventListenerHandler.updateRegistration(mountPointNodeName, ConnectionStatus.class.getSimpleName(),
+                    csts != null ? csts.getName() : "null", nNode);
+    }
+
+}