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 java.util.concurrent.TimeUnit;
  23 import org.apache.commons.io.FilenameUtils;
  24 import org.apache.sshd.common.util.ThreadUtils;
  25 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  26 import org.opendaylight.controller.netconf.ssh.SshProxyServer;
  27 import org.opendaylight.controller.netconf.ssh.SshProxyServerConfigurationBuilder;
  28 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
  29 import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil.InfixProp;
  30 import org.osgi.framework.BundleActivator;
  31 import org.osgi.framework.BundleContext;
  32 import org.slf4j.Logger;
  33 import org.slf4j.LoggerFactory;
  34
  35 public class NetconfSSHActivator implements BundleActivator {
  36     private static final Logger LOG = LoggerFactory.getLogger(NetconfSSHActivator.class);
  37
  38     private static final java.lang.String ALGORITHM = "RSA";
  39     private static final int KEY_SIZE = 4096;
  40     public static final int POOL_SIZE = 8;
  41     private static final int DEFAULT_IDLE_TIMEOUT = (int) TimeUnit.MINUTES.toMillis(20);
  42
  43     private ScheduledExecutorService minaTimerExecutor;
  44     private NioEventLoopGroup clientGroup;
  45     private ExecutorService nioExecutor;
  46     private AuthProviderTracker authProviderTracker;
  47
  48     private SshProxyServer server;
  49
  50     @Override
  51     public void start(final BundleContext bundleContext) throws IOException {
  52         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
  53             @Override
  54             public Thread newThread(final Runnable r) {
  55                 return new Thread(r, "netconf-ssh-server-mina-timers");
  56             }
  57         });
  58         clientGroup = new NioEventLoopGroup();
  59         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  60         server = startSSHServer(bundleContext);
  61     }
  62
  63     @Override
  64     public void stop(final BundleContext context) throws IOException {
  65         if (server != null) {
  66             server.close();
  67         }
  68
  69         if(authProviderTracker != null) {
  70             authProviderTracker.stop();
  71         }
  72
  73         if(nioExecutor!=null) {
  74             nioExecutor.shutdownNow();
  75         }
  76
  77         if(clientGroup != null) {
  78             clientGroup.shutdownGracefully();
  79         }
  80
  81         if(minaTimerExecutor != null) {
  82             minaTimerExecutor.shutdownNow();
  83         }
  84     }
  85
  86     private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
  87         final Optional<InetSocketAddress> maybeSshSocketAddress = NetconfConfigUtil.extractNetconfServerAddress(bundleContext, InfixProp.ssh);
  88
  89         if (maybeSshSocketAddress.isPresent() == false) {
  90             LOG.trace("SSH bridge not configured");
  91             return null;
  92         }
  93
  94         final InetSocketAddress sshSocketAddress = maybeSshSocketAddress.get();
  95         LOG.trace("Starting netconf SSH bridge at {}", sshSocketAddress);
  96
  97         final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
  98
  99         authProviderTracker = new AuthProviderTracker(bundleContext);
 100
 101         final String path = FilenameUtils.separatorsToSystem(NetconfConfigUtil.getPrivateKeyPath(bundleContext));
 102         checkState(!Strings.isNullOrEmpty(path), "Path to ssh private key is blank. Reconfigure %s",
 103                 NetconfConfigUtil.getPrivateKeyKey());
 104
 105         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
 106         sshProxyServer.bind(
 107                 new SshProxyServerConfigurationBuilder()
 108                         .setBindingAddress(sshSocketAddress)
 109                         .setLocalAddress(localAddress)
 110                         .setAuthenticator(authProviderTracker)
 111                         .setKeyPairProvider(new PEMGeneratorHostKeyProvider(path, ALGORITHM, KEY_SIZE))
 112                         .setIdleTimeout(DEFAULT_IDLE_TIMEOUT)
 113                         .createSshProxyServerConfiguration());
 114         return sshProxyServer;
 115     }
 116
 117 }