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