netconf/netconf-ssh/src/main/java/org/opendaylight/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.netconf.ssh.osgi;
   9
  10 import io.netty.channel.local.LocalAddress;
  11 import io.netty.channel.nio.NioEventLoopGroup;
  12 import java.io.IOException;
  13 import java.net.InetSocketAddress;
  14 import java.util.concurrent.ExecutorService;
  15 import java.util.concurrent.Executors;
  16 import java.util.concurrent.ScheduledExecutorService;
  17 import java.util.concurrent.ThreadFactory;
  18 import org.apache.sshd.common.util.ThreadUtils;
  19 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  20 import org.opendaylight.netconf.ssh.SshProxyServer;
  21 import org.opendaylight.netconf.ssh.SshProxyServerConfigurationBuilder;
  22 import org.opendaylight.netconf.util.osgi.NetconfConfigUtil;
  23 import org.opendaylight.netconf.util.osgi.NetconfConfiguration;
  24 import org.osgi.framework.BundleActivator;
  25 import org.osgi.framework.BundleContext;
  26 import org.slf4j.Logger;
  27 import org.slf4j.LoggerFactory;
  28
  29 public class NetconfSSHActivator implements BundleActivator {
  30     private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
  31
  32     private static final java.lang.String ALGORITHM = "RSA";
  33     private static final int KEY_SIZE = 4096;
  34     public static final int POOL_SIZE = 8;
  35     private static final int DEFAULT_IDLE_TIMEOUT = Integer.MAX_VALUE;
  36
  37     private ScheduledExecutorService minaTimerExecutor;
  38     private NioEventLoopGroup clientGroup;
  39     private ExecutorService nioExecutor;
  40     private AuthProviderTracker authProviderTracker;
  41
  42     private SshProxyServer server;
  43
  44     @Override
  45     public void start(final BundleContext bundleContext) throws IOException {
  46         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
  47             @Override
  48             public Thread newThread(final Runnable r) {
  49                 return new Thread(r, "netconf-ssh-server-mina-timers");
  50             }
  51         });
  52         clientGroup = new NioEventLoopGroup();
  53         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  54         server = startSSHServer(bundleContext);
  55     }
  56
  57     @Override
  58     public void stop(final BundleContext context) throws IOException {
  59         if (server != null) {
  60             server.close();
  61         }
  62
  63         if(authProviderTracker != null) {
  64             authProviderTracker.stop();
  65         }
  66
  67         if(nioExecutor!=null) {
  68             nioExecutor.shutdownNow();
  69         }
  70
  71         if(clientGroup != null) {
  72             clientGroup.shutdownGracefully();
  73         }
  74
  75         if(minaTimerExecutor != null) {
  76             minaTimerExecutor.shutdownNow();
  77         }
  78     }
  79
  80     private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
  81         final NetconfConfiguration netconfConfiguration = NetconfConfigUtil.getNetconfConfigurationService(bundleContext).
  82                         orElseThrow(() -> new IllegalStateException("Configuration for SSH not found."));
  83
  84         final InetSocketAddress sshSocketAddress = netconfConfiguration.getSshServerAddress();
  85         LOG.info("Starting netconf SSH server at {}", sshSocketAddress);
  86
  87         final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
  88         authProviderTracker = new AuthProviderTracker(bundleContext);
  89
  90         final String path = netconfConfiguration.getPrivateKeyPath();
  91         LOG.trace("Starting netconf SSH server with path to ssh private key {}", path);
  92
  93         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
  94         sshProxyServer.bind(
  95                 new SshProxyServerConfigurationBuilder()
  96                         .setBindingAddress(sshSocketAddress)
  97                         .setLocalAddress(localAddress)
  98                         .setAuthenticator(authProviderTracker)
  99                         .setKeyPairProvider(new PEMGeneratorHostKeyProvider(path, ALGORITHM, KEY_SIZE))
 100                         .setIdleTimeout(DEFAULT_IDLE_TIMEOUT)
 101                         .createSshProxyServerConfiguration());
 102         return sshProxyServer;
 103     }
 104 }