Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017-present Open Networking Laboratory |
| 3 | * |
| 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 |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 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. |
| 15 | */ |
Yuta HIGUCHI | e3ae821 | 2017-04-20 10:18:41 -0700 | [diff] [blame] | 16 | package org.onosproject.netconf.ctl.impl; |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 17 | |
| 18 | import java.io.BufferedReader; |
| 19 | import java.io.EOFException; |
| 20 | import java.io.IOException; |
| 21 | import java.io.InputStream; |
| 22 | import java.io.InputStreamReader; |
| 23 | import java.io.OutputStream; |
| 24 | import java.io.PrintWriter; |
Andrea Campanella | 7bbe7b1 | 2017-05-03 16:03:38 -0700 | [diff] [blame^] | 25 | import java.nio.Buffer; |
| 26 | import java.nio.ByteBuffer; |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 27 | import java.util.Collection; |
| 28 | import java.util.Optional; |
| 29 | import java.util.concurrent.ExecutorService; |
| 30 | import java.util.concurrent.Future; |
| 31 | |
| 32 | import org.apache.sshd.common.NamedFactory; |
Andrea Campanella | 7bbe7b1 | 2017-05-03 16:03:38 -0700 | [diff] [blame^] | 33 | import org.apache.sshd.common.util.threads.ThreadUtils; |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 34 | import org.apache.sshd.server.Command; |
| 35 | import org.apache.sshd.server.Environment; |
| 36 | import org.apache.sshd.server.ExitCallback; |
| 37 | import org.apache.sshd.server.SessionAware; |
| 38 | import org.apache.sshd.server.session.ServerSession; |
Yuta HIGUCHI | e3ae821 | 2017-04-20 10:18:41 -0700 | [diff] [blame] | 39 | import org.onosproject.netconf.ctl.impl.NetconfStreamThread.NetconfMessageState; |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 40 | import org.slf4j.Logger; |
| 41 | import org.slf4j.LoggerFactory; |
| 42 | |
| 43 | /** |
| 44 | * Mocks a NETCONF Device to test the NETCONF Southbound Interface etc. |
| 45 | * |
| 46 | * Implements the 'netconf' subsystem on Apache SSH (Mina). |
| 47 | * See SftpSubsystem for an example of another subsystem |
| 48 | */ |
| 49 | public class NetconfSshdTestSubsystem extends Thread implements Command, Runnable, SessionAware { |
| 50 | |
| 51 | protected final Logger log = LoggerFactory.getLogger(getClass()); |
| 52 | |
| 53 | public static class Factory implements NamedFactory<Command> { |
| 54 | |
| 55 | public static final String NAME = "netconf"; |
| 56 | |
| 57 | private final ExecutorService executors; |
| 58 | private final boolean shutdownExecutor; |
| 59 | |
| 60 | public Factory() { |
| 61 | this(null); |
| 62 | } |
| 63 | |
| 64 | /** |
| 65 | * @param executorService The {@link ExecutorService} to be used by |
| 66 | * the {@link SftpSubsystem} command when starting execution. If |
| 67 | * {@code null} then a single-threaded ad-hoc service is used. |
| 68 | * <B>Note:</B> the service will <U>not</U> be shutdown when the |
| 69 | * subsystem is closed - unless it is the ad-hoc service, which will be |
| 70 | * shutdown regardless |
| 71 | * @see Factory(ExecutorService, boolean)} |
| 72 | */ |
| 73 | public Factory(ExecutorService executorService) { |
| 74 | this(executorService, false); |
| 75 | } |
| 76 | |
| 77 | /** |
| 78 | * @param executorService The {@link ExecutorService} to be used by |
| 79 | * the {@link SftpSubsystem} command when starting execution. If |
| 80 | * {@code null} then a single-threaded ad-hoc service is used. |
| 81 | * @param shutdownOnExit If {@code true} the {@link ExecutorService#shutdownNow()} |
| 82 | * will be called when subsystem terminates - unless it is the ad-hoc |
| 83 | * service, which will be shutdown regardless |
| 84 | */ |
| 85 | public Factory(ExecutorService executorService, boolean shutdownOnExit) { |
| 86 | executors = executorService; |
| 87 | shutdownExecutor = shutdownOnExit; |
| 88 | } |
| 89 | |
| 90 | public ExecutorService getExecutorService() { |
| 91 | return executors; |
| 92 | } |
| 93 | |
| 94 | public boolean isShutdownOnExit() { |
| 95 | return shutdownExecutor; |
| 96 | } |
| 97 | |
Yuta HIGUCHI | e3ae821 | 2017-04-20 10:18:41 -0700 | [diff] [blame] | 98 | @Override |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 99 | public Command create() { |
| 100 | return new NetconfSshdTestSubsystem(getExecutorService(), isShutdownOnExit()); |
| 101 | } |
| 102 | |
Yuta HIGUCHI | e3ae821 | 2017-04-20 10:18:41 -0700 | [diff] [blame] | 103 | @Override |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 104 | public String getName() { |
| 105 | return NAME; |
| 106 | } |
| 107 | } |
| 108 | |
| 109 | /** |
| 110 | * Properties key for the maximum of available open handles per session. |
| 111 | */ |
| 112 | private static final String CLOSE_SESSION = "<close-session"; |
| 113 | private static final String END_PATTERN = "]]>]]>"; |
| 114 | |
| 115 | private ExecutorService executors; |
| 116 | private boolean shutdownExecutor; |
| 117 | private ExitCallback callback; |
| 118 | private ServerSession session; |
| 119 | private InputStream in; |
| 120 | private OutputStream out; |
| 121 | private OutputStream err; |
| 122 | private Environment env; |
| 123 | private Future<?> pendingFuture; |
| 124 | private boolean closed = false; |
| 125 | private NetconfMessageState state; |
| 126 | private PrintWriter outputStream; |
| 127 | |
| 128 | public NetconfSshdTestSubsystem() { |
| 129 | this(null); |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * @param executorService The {@link ExecutorService} to be used by |
| 134 | * the {@link SftpSubsystem} command when starting execution. If |
| 135 | * {@code null} then a single-threaded ad-hoc service is used. |
| 136 | * <b>Note:</b> the service will <U>not</U> be shutdown when the |
| 137 | * subsystem is closed - unless it is the ad-hoc service |
| 138 | * @see #SftpSubsystem(ExecutorService, boolean) |
| 139 | */ |
| 140 | public NetconfSshdTestSubsystem(ExecutorService executorService) { |
| 141 | this(executorService, false); |
| 142 | } |
| 143 | |
| 144 | /** |
| 145 | * @param executorService The {@link ExecutorService} to be used by |
| 146 | * the {@link SftpSubsystem} command when starting execution. If |
| 147 | * {@code null} then a single-threaded ad-hoc service is used. |
| 148 | * @param shutdownOnExit If {@code true} the {@link ExecutorService#shutdownNow()} |
| 149 | * will be called when subsystem terminates - unless it is the ad-hoc |
| 150 | * service, which will be shutdown regardless |
| 151 | * @see ThreadUtils#newSingleThreadExecutor(String) |
| 152 | */ |
| 153 | public NetconfSshdTestSubsystem(ExecutorService executorService, boolean shutdownOnExit) { |
| 154 | executors = executorService; |
| 155 | if (executorService == null) { |
| 156 | executors = ThreadUtils.newSingleThreadExecutor(getClass().getSimpleName()); |
| 157 | shutdownExecutor = true; // we always close the ad-hoc executor service |
| 158 | } else { |
| 159 | shutdownExecutor = shutdownOnExit; |
| 160 | } |
| 161 | } |
| 162 | |
| 163 | @Override |
| 164 | public void setSession(ServerSession session) { |
| 165 | this.session = session; |
| 166 | } |
| 167 | |
| 168 | @Override |
| 169 | public void run() { |
| 170 | BufferedReader bufferReader = new BufferedReader(new InputStreamReader(in)); |
| 171 | boolean socketClosed = false; |
| 172 | try { |
| 173 | StringBuilder deviceRequestBuilder = new StringBuilder(); |
| 174 | while (!socketClosed) { |
| 175 | int cInt = bufferReader.read(); |
| 176 | if (cInt == -1) { |
| 177 | log.info("Netconf client sent error"); |
| 178 | socketClosed = true; |
| 179 | } |
| 180 | char c = (char) cInt; |
| 181 | state = state.evaluateChar(c); |
| 182 | deviceRequestBuilder.append(c); |
| 183 | if (state == NetconfMessageState.END_PATTERN) { |
| 184 | String deviceRequest = deviceRequestBuilder.toString(); |
| 185 | if (deviceRequest.equals(END_PATTERN)) { |
| 186 | socketClosed = true; |
| 187 | this.interrupt(); |
| 188 | } else { |
| 189 | deviceRequest = deviceRequest.replace(END_PATTERN, ""); |
| 190 | Optional<Integer> messageId = NetconfStreamThread.getMsgId(deviceRequest); |
| 191 | log.info("Client Request on session {}. MsgId {}: {}", |
Andrea Campanella | 7bbe7b1 | 2017-05-03 16:03:38 -0700 | [diff] [blame^] | 192 | session.getSessionId(), messageId, deviceRequest); |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 193 | synchronized (outputStream) { |
| 194 | if (NetconfSessionImplTest.HELLO_REQ_PATTERN.matcher(deviceRequest).matches()) { |
| 195 | String helloReply = |
Andrea Campanella | 7bbe7b1 | 2017-05-03 16:03:38 -0700 | [diff] [blame^] | 196 | NetconfSessionImplTest.getTestHelloReply(Optional.of(ByteBuffer.wrap( |
| 197 | session.getSessionId()).asLongBuffer().get())); |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 198 | outputStream.write(helloReply + END_PATTERN); |
| 199 | outputStream.flush(); |
| 200 | } else if (NetconfSessionImplTest.EDIT_CONFIG_REQ_PATTERN.matcher(deviceRequest).matches() |
Shivani Vaidya | 48df84e | 2017-04-13 13:48:17 -0700 | [diff] [blame] | 201 | || NetconfSessionImplTest.COPY_CONFIG_REQ_PATTERN.matcher(deviceRequest).matches() |
| 202 | || NetconfSessionImplTest.LOCK_REQ_PATTERN.matcher(deviceRequest).matches() |
| 203 | || NetconfSessionImplTest.UNLOCK_REQ_PATTERN.matcher(deviceRequest).matches()) { |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 204 | outputStream.write(NetconfSessionImplTest.getOkReply(messageId) + END_PATTERN); |
| 205 | outputStream.flush(); |
| 206 | } else if (NetconfSessionImplTest.GET_CONFIG_REQ_PATTERN.matcher(deviceRequest).matches() |
| 207 | || NetconfSessionImplTest.GET_REQ_PATTERN.matcher(deviceRequest).matches()) { |
| 208 | outputStream.write(NetconfSessionImplTest.getGetReply(messageId) + END_PATTERN); |
| 209 | outputStream.flush(); |
| 210 | } else if (deviceRequest.contains(CLOSE_SESSION)) { |
| 211 | socketClosed = true; |
| 212 | outputStream.write(NetconfSessionImplTest.getOkReply(messageId) + END_PATTERN); |
| 213 | outputStream.flush(); |
| 214 | } else { |
| 215 | log.error("Unexpected NETCONF message structure on session {} : {}", |
Andrea Campanella | 7bbe7b1 | 2017-05-03 16:03:38 -0700 | [diff] [blame^] | 216 | ByteBuffer.wrap( |
| 217 | session.getSessionId()).asLongBuffer().get(), deviceRequest); |
Sean Condon | d2c8d47 | 2017-02-17 17:09:39 +0000 | [diff] [blame] | 218 | } |
| 219 | } |
| 220 | deviceRequestBuilder.setLength(0); |
| 221 | } |
| 222 | } |
| 223 | } |
| 224 | } catch (Throwable t) { |
| 225 | if (!socketClosed && !(t instanceof EOFException)) { // Ignore |
| 226 | log.error("Exception caught in NETCONF Server subsystem", t.getMessage()); |
| 227 | } |
| 228 | } finally { |
| 229 | try { |
| 230 | bufferReader.close(); |
| 231 | } catch (IOException ioe) { |
| 232 | log.error("Could not close DataInputStream", ioe); |
| 233 | } |
| 234 | |
| 235 | callback.onExit(0); |
| 236 | } |
| 237 | } |
| 238 | |
| 239 | @Override |
| 240 | public void setInputStream(InputStream in) { |
| 241 | this.in = in; |
| 242 | } |
| 243 | |
| 244 | @Override |
| 245 | public void setOutputStream(OutputStream out) { |
| 246 | this.out = out; |
| 247 | } |
| 248 | |
| 249 | @Override |
| 250 | public void setErrorStream(OutputStream err) { |
| 251 | this.err = err; |
| 252 | } |
| 253 | |
| 254 | @Override |
| 255 | public void setExitCallback(ExitCallback callback) { |
| 256 | this.callback = callback; |
| 257 | } |
| 258 | |
| 259 | @Override |
| 260 | public void start(Environment env) throws IOException { |
| 261 | this.env = env; |
| 262 | state = NetconfMessageState.NO_MATCHING_PATTERN; |
| 263 | outputStream = new PrintWriter(out, false); |
| 264 | try { |
| 265 | pendingFuture = executors.submit(this); |
| 266 | } catch (RuntimeException e) { // e.g., RejectedExecutionException |
| 267 | log.error("Failed (" + e.getClass().getSimpleName() + ") to start command: " + e.getMessage(), e); |
| 268 | throw new IOException(e); |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | @Override |
| 273 | public void interrupt() { |
| 274 | // if thread has not completed, cancel it |
| 275 | if ((pendingFuture != null) && (!pendingFuture.isDone())) { |
| 276 | boolean result = pendingFuture.cancel(true); |
| 277 | // TODO consider waiting some reasonable (?) amount of time for cancellation |
| 278 | if (log.isDebugEnabled()) { |
| 279 | log.debug("interrupt() - cancel pending future=" + result); |
| 280 | } |
| 281 | } |
| 282 | |
| 283 | pendingFuture = null; |
| 284 | |
| 285 | if ((executors != null) && shutdownExecutor) { |
| 286 | Collection<Runnable> runners = executors.shutdownNow(); |
| 287 | if (log.isDebugEnabled()) { |
| 288 | log.debug("interrupt() - shutdown executor service - runners count=" + |
| 289 | runners.size()); |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | executors = null; |
| 294 | |
| 295 | if (!closed) { |
| 296 | if (log.isDebugEnabled()) { |
| 297 | log.debug("interrupt() - mark as closed"); |
| 298 | } |
| 299 | |
| 300 | closed = true; |
| 301 | } |
| 302 | outputStream.close(); |
| 303 | } |
| 304 | |
| 305 | @Override |
| 306 | public void destroy() { |
| 307 | //Handled by interrupt |
| 308 | } |
| 309 | |
| 310 | protected void process(Buffer buffer) throws IOException { |
| 311 | log.warn("Receieved buffer:" + buffer); |
| 312 | } |
| 313 | } |