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.sshd.common.util.ThreadUtils;
  23 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  24 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  25 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
  26 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
  27 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil.InfixProp;
  28 import org.osgi.framework.BundleActivator;
  29 import org.osgi.framework.BundleContext;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 public class NetconfSSHActivator implements BundleActivator {
  34     private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
  35
  36     private static final java.lang.String ALGORITHM = "RSA";
  37     private static final int KEY_SIZE = 4096;
  38     public static final int POOL_SIZE = 8;
  39     private static final int DEFAULT_IDLE_TIMEOUT = Integer.MAX_VALUE;
  40
  41     private ScheduledExecutorService minaTimerExecutor;
  42     private NioEventLoopGroup clientGroup;
  43     private ExecutorService nioExecutor;
  44     private AuthProviderTracker authProviderTracker;
  45
  46     private SshProxyServer server;
  47
  48     @Override
  49     public void start(final BundleContext bundleContext) throws IOException {
  50         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
  51             @Override
  52             public Thread newThread(final Runnable r) {
  53                 return new Thread(r, "netconf-ssh-server-mina-timers");
  54             }
  55         });
  56         clientGroup = new NioEventLoopGroup();
  57         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  58         server = startSSHServer(bundleContext);
  59     }
  60
  61     @Override
  62     public void stop(final BundleContext context) throws IOException {
  63         if (server != null) {
  64             server.close();
  65         }
  66
  67         if(authProviderTracker != null) {
  68             authProviderTracker.stop();
  69         }
  70
  71         if(nioExecutor!=null) {
  72             nioExecutor.shutdownNow();
  73         }
  74
  75         if(clientGroup != null) {
  76             clientGroup.shutdownGracefully();
  77         }
  78
  79         if(minaTimerExecutor != null) {
  80             minaTimerExecutor.shutdownNow();
  81         }
  82     }
  83
  84     private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
  85         final Optional<InetSocketAddress> maybeSshSocketAddress = NetconfConfigUtil.extractNetconfServerAddress(bundleContext, InfixProp.ssh);
  86
  87         if (!maybeSshSocketAddress.isPresent()) {
  88             LOG.trace("SSH bridge not configured");
  89             return null;
  90         }
  91
  92         final InetSocketAddress sshSocketAddress = maybeSshSocketAddress.get();
  93         LOG.trace("Starting netconf SSH bridge at {}", sshSocketAddress);
  94
  95         final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
  96
  97         authProviderTracker = new AuthProviderTracker(bundleContext);
  98
  99         final String path = NetconfConfigUtil.getPrivateKeyPath(bundleContext);
 100
 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 }