opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/netconf/ssh/osgi/NetconfSSHActivator.java

   1 /*
   2  * Copyright (c) 2013 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   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
   7  */
   8 package org.opendaylight.controller.netconf.ssh.osgi;
   9
  10 import static com.google.common.base.Preconditions.checkState;
  11
  12 import com.google.common.base.Optional;
  13 import com.google.common.base.Strings;
  14 import io.netty.channel.local.LocalAddress;
  15 import io.netty.channel.nio.NioEventLoopGroup;
  16 import java.io.IOException;
  17 import java.net.InetSocketAddress;
  18 import java.util.concurrent.ExecutorService;
  19 import java.util.concurrent.Executors;
  20 import java.util.concurrent.ScheduledExecutorService;
  21 import java.util.concurrent.ThreadFactory;
  22 import org.apache.commons.io.FilenameUtils;
  23 import org.apache.sshd.common.util.ThreadUtils;
  24 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  25 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  26 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
  27 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
  28 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil.InfixProp;
  29 import org.osgi.framework.BundleActivator;
  30 import org.osgi.framework.BundleContext;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 public class NetconfSSHActivator implements BundleActivator {
  35     private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
  36
  37     private static final java.lang.String ALGORITHM = "RSA";
  38     private static final int KEY_SIZE = 4096;
  39     public static final int POOL_SIZE = 8;
  40     private static final int DEFAULT_IDLE_TIMEOUT = Integer.MAX_VALUE;
  41
  42     private ScheduledExecutorService minaTimerExecutor;
  43     private NioEventLoopGroup clientGroup;
  44     private ExecutorService nioExecutor;
  45     private AuthProviderTracker authProviderTracker;
  46
  47     private SshProxyServer server;
  48
  49     @Override
  50     public void start(final BundleContext bundleContext) throws IOException {
  51         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
  52             @Override
  53             public Thread newThread(final Runnable r) {
  54                 return new Thread(r, "netconf-ssh-server-mina-timers");
  55             }
  56         });
  57         clientGroup = new NioEventLoopGroup();
  58         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  59         server = startSSHServer(bundleContext);
  60     }
  61
  62     @Override
  63     public void stop(final BundleContext context) throws IOException {
  64         if (server != null) {
  65             server.close();
  66         }
  67
  68         if(authProviderTracker != null) {
  69             authProviderTracker.stop();
  70         }
  71
  72         if(nioExecutor!=null) {
  73             nioExecutor.shutdownNow();
  74         }
  75
  76         if(clientGroup != null) {
  77             clientGroup.shutdownGracefully();
  78         }
  79
  80         if(minaTimerExecutor != null) {
  81             minaTimerExecutor.shutdownNow();
  82         }
  83     }
  84
  85     private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
  86         final Optional<InetSocketAddress> maybeSshSocketAddress = NetconfConfigUtil.extractNetconfServerAddress(bundleContext, InfixProp.ssh);
  87
  88         if (maybeSshSocketAddress.isPresent() == false) {
  89             LOG.trace("SSH bridge not configured");
  90             return null;
  91         }
  92
  93         final InetSocketAddress sshSocketAddress = maybeSshSocketAddress.get();
  94         LOG.trace("Starting netconf SSH bridge at {}", sshSocketAddress);
  95
  96         final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
  97
  98         authProviderTracker = new AuthProviderTracker(bundleContext);
  99
 100         final String path = FilenameUtils.separatorsToSystem(NetconfConfigUtil.getPrivateKeyPath(bundleContext));
 101         checkState(!Strings.isNullOrEmpty(path), "Path to ssh private key is blank. Reconfigure %s",
 102                 NetconfConfigUtil.getPrivateKeyKey());
 103
 104         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
 105         sshProxyServer.bind(
 106                 new SshProxyServerConfigurationBuilder()
 107                         .setBindingAddress(sshSocketAddress)
 108                         .setLocalAddress(localAddress)
 109                         .setAuthenticator(authProviderTracker)
 110                         .setKeyPairProvider(new PEMGeneratorHostKeyProvider(path, ALGORITHM, KEY_SIZE))
 111                         .setIdleTimeout(DEFAULT_IDLE_TIMEOUT)
 112                         .createSshProxyServerConfiguration());
 113         return sshProxyServer;
 114     }
 115
 116 }