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.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 logger = 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
  40     private ScheduledExecutorService minaTimerExecutor;
  41     private NioEventLoopGroup clientGroup;
  42     private ExecutorService nioExecutor;
  43     private AuthProviderTracker authProviderTracker;
  44
  45     private SshProxyServer server;
  46
  47     @Override
  48     public void start(final BundleContext bundleContext) throws IOException {
  49         minaTimerExecutor = Executors.newScheduledThreadPool(POOL_SIZE, new ThreadFactory() {
  50             @Override
  51             public Thread newThread(final Runnable r) {
  52                 return new Thread(r, "netconf-ssh-server-mina-timers");
  53             }
  54         });
  55         clientGroup = new NioEventLoopGroup();
  56         nioExecutor = ThreadUtils.newFixedThreadPool("netconf-ssh-server-nio-group", POOL_SIZE);
  57         server = startSSHServer(bundleContext);
  58     }
  59
  60     @Override
  61     public void stop(final BundleContext context) throws IOException {
  62         if (server != null) {
  63             server.close();
  64         }
  65
  66         if(authProviderTracker != null) {
  67             authProviderTracker.stop();
  68         }
  69
  70         if(nioExecutor!=null) {
  71             nioExecutor.shutdownNow();
  72         }
  73
  74         if(clientGroup != null) {
  75             clientGroup.shutdownGracefully();
  76         }
  77
  78         if(minaTimerExecutor != null) {
  79             minaTimerExecutor.shutdownNow();
  80         }
  81     }
  82
  83     private SshProxyServer startSSHServer(final BundleContext bundleContext) throws IOException {
  84         final Optional<InetSocketAddress> maybeSshSocketAddress = NetconfConfigUtil.extractNetconfServerAddress(bundleContext, InfixProp.ssh);
  85
  86         if (maybeSshSocketAddress.isPresent() == false) {
  87             logger.trace("SSH bridge not configured");
  88             return null;
  89         }
  90
  91         final InetSocketAddress sshSocketAddress = maybeSshSocketAddress.get();
  92         logger.trace("Starting netconf SSH bridge at {}", sshSocketAddress);
  93
  94         final LocalAddress localAddress = NetconfConfigUtil.getNetconfLocalAddress();
  95
  96         authProviderTracker = new AuthProviderTracker(bundleContext);
  97
  98         final String path = FilenameUtils.separatorsToSystem(NetconfConfigUtil.getPrivateKeyPath(bundleContext));
  99         checkState(!Strings.isNullOrEmpty(path), "Path to ssh private key is blank. Reconfigure %s",
 100                 NetconfConfigUtil.getPrivateKeyKey());
 101
 102         final SshProxyServer sshProxyServer = new SshProxyServer(minaTimerExecutor, clientGroup, nioExecutor);
 103         sshProxyServer.bind(sshSocketAddress, localAddress, authProviderTracker, new PEMGeneratorHostKeyProvider(path, ALGORITHM, KEY_SIZE));
 104         return sshProxyServer;
 105     }
 106
 107 }