2 * Copyright (C) 2013 Red Hat, Inc.
4 * This program and the accompanying materials are made available under the
5 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
6 * and is available at http://www.eclipse.org/legal/epl-v10.html
8 * Authors : Madhu Venugopal, Brent Salisbury, Evan Zeller
10 package org.opendaylight.ovsdb.plugin.impl;
12 import io.netty.channel.ChannelHandler;
14 import java.io.IOException;
15 import java.net.InetAddress;
16 import java.util.ArrayList;
17 import java.util.Collection;
18 import java.util.HashSet;
19 import java.util.List;
22 import java.util.concurrent.ConcurrentHashMap;
23 import java.util.concurrent.ConcurrentMap;
24 import java.util.concurrent.ExecutionException;
26 import org.opendaylight.controller.sal.core.Node;
27 import org.opendaylight.controller.sal.core.Property;
28 import org.opendaylight.controller.sal.utils.Status;
29 import org.opendaylight.controller.sal.utils.StatusCode;
30 import org.opendaylight.ovsdb.lib.MonitorCallBack;
31 import org.opendaylight.ovsdb.lib.OvsdbClient;
32 import org.opendaylight.ovsdb.lib.OvsdbConnection;
33 import org.opendaylight.ovsdb.lib.OvsdbConnectionInfo;
34 import org.opendaylight.ovsdb.lib.OvsdbConnectionListener;
35 import org.opendaylight.ovsdb.lib.message.MonitorRequest;
36 import org.opendaylight.ovsdb.lib.message.MonitorRequestBuilder;
37 import org.opendaylight.ovsdb.lib.message.MonitorSelect;
38 import org.opendaylight.ovsdb.lib.message.TableUpdates;
39 import org.opendaylight.ovsdb.lib.schema.DatabaseSchema;
40 import org.opendaylight.ovsdb.lib.schema.GenericTableSchema;
41 import org.opendaylight.ovsdb.lib.schema.TableSchema;
42 import org.opendaylight.ovsdb.plugin.api.Connection;
43 import org.opendaylight.ovsdb.plugin.api.ConnectionConstants;
44 import org.opendaylight.ovsdb.plugin.internal.IPAddressProperty;
45 import org.opendaylight.ovsdb.plugin.internal.L4PortProperty;
46 import org.opendaylight.ovsdb.plugin.api.OvsdbConnectionService;
47 import org.opendaylight.ovsdb.plugin.api.OvsdbInventoryService;
48 import org.opendaylight.ovsdb.utils.config.ConfigProperties;
49 import org.slf4j.Logger;
50 import org.slf4j.LoggerFactory;
52 import com.google.common.collect.Lists;
56 * Represents the openflow plugin component in charge of programming the flows
57 * the flow programming and relay them to functional modules above SAL.
59 public class ConnectionServiceImpl implements OvsdbConnectionService,
60 OvsdbConnectionListener {
61 protected static final Logger logger = LoggerFactory.getLogger(ConnectionServiceImpl.class);
63 // Properties that can be set in config.ini
64 private static final Integer DEFAULT_OVSDB_PORT = 6640;
65 private static final String OVSDB_LISTENPORT = "ovsdb.listenPort";
68 private ConcurrentMap<String, Connection> ovsdbConnections = new ConcurrentHashMap<String, Connection>();
69 private List<ChannelHandler> handlers = null;
71 private volatile OvsdbInventoryService ovsdbInventoryService;
72 private volatile OvsdbConnection connectionLib;
74 public void setOvsdbInventoryService(OvsdbInventoryService inventoryService) {
75 this.ovsdbInventoryService = inventoryService;
78 public void setOvsdbConnection(OvsdbConnection ovsdbConnection) {
79 this.connectionLib = ovsdbConnection;
86 * Function called by the dependency manager when at least one dependency
87 * become unsatisfied or when the component is shutting down because for
88 * example bundle is being stopped.
94 * Function called by dependency manager after "init ()" is called and after
95 * the services provided by the class are registered in the service registry
98 /* Start ovsdb server before getting connection clients */
99 String portString = ConfigProperties.getProperty(OvsdbConnectionService.class, OVSDB_LISTENPORT);
100 int ovsdbListenPort = DEFAULT_OVSDB_PORT;
101 if (portString != null) {
102 ovsdbListenPort = Integer.decode(portString).intValue();
105 if (!connectionLib.startOvsdbManager(ovsdbListenPort)) {
106 logger.warn("Start OVSDB manager call from ConnectionService was not necessary");
109 /* Then get connection clients */
110 Collection<OvsdbClient> connections = connectionLib.getConnections();
111 for (OvsdbClient client : connections) {
112 logger.info("CONNECT start connected clients client = {}", client);
113 this.connected(client);
118 * Function called by the dependency manager before the services exported by
119 * the component are unregistered, this will be followed by a "destroy ()"
123 for (Connection connection : ovsdbConnections.values()) {
124 connection.disconnect();
128 public Status disconnect(Node node) {
129 String identifier = (String) node.getID();
130 Connection connection = ovsdbConnections.get(identifier);
131 if (connection != null) {
132 ovsdbConnections.remove(identifier);
133 connection.disconnect();
134 ovsdbInventoryService.removeNode(node);
135 return new Status(StatusCode.SUCCESS);
137 return new Status(StatusCode.NOTFOUND);
141 public Node connect(String identifier, Map<ConnectionConstants, String> params) {
146 address = InetAddress.getByName(params.get(ConnectionConstants.ADDRESS));
147 } catch (Exception e) {
148 logger.error("Unable to resolve " + params.get(ConnectionConstants.ADDRESS), e);
153 port = Integer.parseInt(params.get(ConnectionConstants.PORT));
154 if (port == 0) port = DEFAULT_OVSDB_PORT;
155 } catch (Exception e) {
156 port = DEFAULT_OVSDB_PORT;
160 OvsdbClient client = connectionLib.connect(address, port);
161 return handleNewConnection(identifier, client);
162 } catch (InterruptedException e) {
163 logger.error("Thread was interrupted during connect", e);
164 } catch (ExecutionException e) {
165 logger.error("ExecutionException in handleNewConnection for identifier " + identifier, e);
170 public List<ChannelHandler> getHandlers() {
174 public void setHandlers(List<ChannelHandler> handlers) {
175 this.handlers = handlers;
179 public Connection getConnection(Node node) {
180 String identifier = (String) node.getID();
181 return ovsdbConnections.get(identifier);
185 public List<Node> getNodes() {
186 List<Node> nodes = new ArrayList<Node>();
187 for (Connection connection : ovsdbConnections.values()) {
188 nodes.add(connection.getNode());
193 private Node handleNewConnection(String identifier, OvsdbClient client) throws InterruptedException, ExecutionException {
194 Connection connection = new Connection(identifier, client);
195 Node node = connection.getNode();
196 ovsdbConnections.put(identifier, connection);
197 List<String> dbs = client.getDatabases().get();
198 for (String db : dbs) {
199 client.getSchema(db).get();
201 // Keeping the Initial inventory update(s) on its own thread.
203 Connection connection;
209 logger.info("Initialize inventory for {}", connection.toString());
210 initializeInventoryForNewNode(connection);
211 } catch (InterruptedException | ExecutionException | IOException e) {
212 logger.error("Failed to initialize inventory for node with identifier " + identifier, e);
213 ovsdbConnections.remove(identifier);
216 public Thread initializeConnectionParams(String identifier, Connection connection) {
217 this.identifier = identifier;
218 this.connection = connection;
221 }.initializeConnectionParams(identifier, connection).start();
225 public void channelClosed(Node node) throws Exception {
226 logger.info("Connection to Node : {} closed", node);
228 ovsdbInventoryService.removeNode(node);
231 private void initializeInventoryForNewNode (Connection connection) throws InterruptedException, ExecutionException, IOException {
232 OvsdbClient client = connection.getClient();
233 InetAddress address = client.getConnectionInfo().getRemoteAddress();
234 int port = client.getConnectionInfo().getRemotePort();
235 IPAddressProperty addressProp = new IPAddressProperty(address);
236 L4PortProperty l4Port = new L4PortProperty(port);
237 Set<Property> props = new HashSet<Property>();
238 props.add(addressProp);
240 logger.info("Add node to ovsdb inventory service {}", connection.getNode().toString());
241 ovsdbInventoryService.addNode(connection.getNode(), props);
243 List<String> databases = client.getDatabases().get();
244 if (databases == null) {
245 logger.error("Unable to get Databases for the ovsdb connection : {}", client.getConnectionInfo());
248 for (String database : databases) {
249 DatabaseSchema dbSchema = client.getSchema(database).get();
250 TableUpdates updates = this.monitorTables(connection.getNode(), dbSchema);
251 ovsdbInventoryService.processTableUpdates(connection.getNode(), dbSchema.getName(), updates);
253 logger.info("Notifying Inventory Listeners for Node Added: {}", connection.getNode().toString());
254 ovsdbInventoryService.notifyNodeAdded(connection.getNode(), address, port);
257 public TableUpdates monitorTables(Node node, DatabaseSchema dbSchema) throws ExecutionException, InterruptedException, IOException {
258 String identifier = (String) node.getID();
259 Connection connection = ovsdbConnections.get(identifier);
260 OvsdbClient client = connection.getClient();
261 if (dbSchema == null) {
262 logger.error("Unable to get Database Schema for the ovsdb connection : {}", client.getConnectionInfo());
265 Set<String> tables = dbSchema.getTables();
266 if (tables == null) {
267 logger.warn("Database {} without any tables. Strange !", dbSchema.getName());
270 List<MonitorRequest<GenericTableSchema>> monitorRequests = Lists.newArrayList();
271 for (String tableName : tables) {
272 GenericTableSchema tableSchema = dbSchema.table(tableName, GenericTableSchema.class);
273 monitorRequests.add(this.getAllColumnsMonitorRequest(tableSchema));
275 return client.monitor(dbSchema, monitorRequests, new UpdateMonitor(node));
279 * As per RFC 7047, section 4.1.5, if a Monitor request is sent without any columns, the update response will not include
281 * ----------------------------------------------------------------------------------------------------------------------------------
282 * Each <monitor-request> specifies one or more columns and the manner in which the columns (or the entire table) are to be monitored.
283 * The "columns" member specifies the columns whose values are monitored. It MUST NOT contain duplicates.
284 * If "columns" is omitted, all columns in the table, except for "_uuid", are monitored.
285 * ----------------------------------------------------------------------------------------------------------------------------------
286 * In order to overcome this limitation, this method
288 * @return MonitorRequest that includes all the Bridge Columns including _uuid
290 public <T extends TableSchema<T>> MonitorRequest<T> getAllColumnsMonitorRequest (T tableSchema) {
291 Set<String> columns = tableSchema.getColumns();
292 MonitorRequestBuilder<T> monitorBuilder = MonitorRequestBuilder.builder(tableSchema);
293 for (String column : columns) {
294 monitorBuilder.addColumn(column);
296 return monitorBuilder.with(new MonitorSelect(true, true, true, true)).build();
299 private class UpdateMonitor implements MonitorCallBack {
301 public UpdateMonitor(Node node) {
306 public void update(TableUpdates result, DatabaseSchema dbSchema) {
307 ovsdbInventoryService.processTableUpdates(node, dbSchema.getName(), result);
311 public void exception(Throwable t) {
312 System.out.println("Exception t = " + t);
316 private String getConnectionIdentifier(OvsdbClient client) {
317 OvsdbConnectionInfo info = client.getConnectionInfo();
318 return info.getRemoteAddress().getHostAddress()+":"+info.getRemotePort();
323 public void connected(OvsdbClient client) {
324 String identifier = getConnectionIdentifier(client);
326 this.handleNewConnection(identifier, client);
327 } catch (InterruptedException | ExecutionException e) {
333 public void disconnected(OvsdbClient client) {
334 Connection connection = ovsdbConnections.get(this.getConnectionIdentifier(client));
335 if (connection == null) return;
336 this.disconnect(connection.getNode());