2 * Copyright (c) 2016 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 package io.fd.vpp.jvpp;
19 import static java.util.Objects.requireNonNull;
21 import io.fd.vpp.jvpp.callback.ControlPingCallback;
22 import io.fd.vpp.jvpp.callback.JVppCallback;
23 import io.fd.vpp.jvpp.dto.ControlPingReply;
24 import java.io.IOException;
25 import java.util.HashMap;
27 import java.util.concurrent.ConcurrentHashMap;
28 import java.util.concurrent.ConcurrentMap;
29 import java.util.logging.Level;
30 import java.util.logging.Logger;
33 * Default implementation of JVppRegistry.
35 public final class JVppRegistryImpl implements JVppRegistry, ControlPingCallback {
37 private static final Logger LOG = Logger.getLogger(JVppRegistryImpl.class.getName());
39 private final VppJNIConnection connection;
40 private final Map<String, JVppCallback> pluginRegistry;
41 private final ConcurrentMap<Integer, ControlPingCallback> pingCalls;
43 public JVppRegistryImpl(final String clientName) throws IOException {
44 connection = new VppJNIConnection(clientName);
46 pluginRegistry = new HashMap<>();
47 pingCalls = new ConcurrentHashMap<>();
51 public VppConnection getConnection() {
56 public synchronized void register(final JVpp jvpp, final JVppCallback callback) {
57 requireNonNull(jvpp, "jvpp should not be null");
58 requireNonNull(callback, "Callback should not be null");
59 final String name = jvpp.getClass().getName();
60 if (pluginRegistry.containsKey(name)) {
61 throw new IllegalArgumentException(
62 String.format("Callback for plugin %s was already registered", name));
64 jvpp.init(this, callback, connection.getConnectionInfo().queueAddress,
65 connection.getConnectionInfo().clientIndex);
66 pluginRegistry.put(name, callback);
70 public synchronized void unregister(final String name) {
71 requireNonNull(name, "Plugin name should not be null");
72 final JVppCallback previous = pluginRegistry.remove(name);
73 assertPluginWasRegistered(name, previous);
77 public synchronized JVppCallback get(final String name) {
78 requireNonNull(name, "Plugin name should not be null");
79 JVppCallback value = pluginRegistry.get(name);
80 assertPluginWasRegistered(name, value);
84 private native int controlPing0() throws VppInvocationException;
87 public synchronized int controlPing(final Class<? extends JVpp> clazz) throws VppInvocationException {
88 connection.checkActive();
89 final String name = clazz.getName();
91 final ControlPingCallback callback = (ControlPingCallback) pluginRegistry.get(clazz.getName());
92 assertPluginWasRegistered(name, callback);
94 int context = controlPing0();
96 throw new VppInvocationException("controlPing", context);
99 pingCalls.put(context, callback);
104 public void onControlPingReply(final ControlPingReply reply) {
105 final ControlPingCallback callback = pingCalls.get(reply.context);
106 if (callback == null) {
107 LOG.log(Level.WARNING, "No callback was registered for reply id={0} ", reply.context);
110 // pass the reply to the callback registered by the ping caller
111 callback.onControlPingReply(reply);
115 public void onError(final VppCallbackException ex) {
116 final int ctxId = ex.getCtxId();
117 final ControlPingCallback callback = pingCalls.get(ctxId);
118 if (callback == null) {
119 LOG.log(Level.WARNING, "No callback was registered for reply id={0} ", ctxId);
122 // pass the error to the callback registered by the ping caller
123 callback.onError(ex);
126 private static void assertPluginWasRegistered(final String name, final JVppCallback value) {
128 throw new IllegalArgumentException(String.format("Callback for plugin %s is not registered", name));
133 public void close() throws Exception {