opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/config/yang/netconf/northbound/ssh/NetconfNorthboundSshModule.java

   1 package org.opendaylight.controller.config.yang.netconf.northbound.ssh;
   2
   3 import io.netty.channel.ChannelFuture;
   4 import io.netty.channel.local.LocalAddress;
   5 import io.netty.util.concurrent.GenericFutureListener;
   6 import java.io.IOException;
   7 import java.net.InetAddress;
   8 import java.net.InetSocketAddress;
   9 import java.net.UnknownHostException;
  10 import java.util.concurrent.Executors;
  11 import org.apache.sshd.server.keyprovider.PEMGeneratorHostKeyProvider;
  12 import org.opendaylight.netconf.api.NetconfServerDispatcher;
  13 import org.opendaylight.netconf.ssh.SshProxyServer;
  14 import org.opendaylight.netconf.ssh.SshProxyServerConfigurationBuilder;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17
  18 public class NetconfNorthboundSshModule extends org.opendaylight.controller.config.yang.netconf.northbound.ssh.AbstractNetconfNorthboundSshModule {
  19
  20     private static final Logger LOG = LoggerFactory.getLogger(NetconfNorthboundSshModule.class);
  21
  22     public NetconfNorthboundSshModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver) {
  23         super(identifier, dependencyResolver);
  24     }
  25
  26     public NetconfNorthboundSshModule(final org.opendaylight.controller.config.api.ModuleIdentifier identifier, final org.opendaylight.controller.config.api.DependencyResolver dependencyResolver, final org.opendaylight.controller.config.yang.netconf.northbound.ssh.NetconfNorthboundSshModule oldModule, final java.lang.AutoCloseable oldInstance) {
  27         super(identifier, dependencyResolver, oldModule, oldInstance);
  28     }
  29
  30     @Override
  31     public void customValidation() {
  32         // add custom validation form module attributes here.
  33     }
  34
  35     @Override
  36     public java.lang.AutoCloseable createInstance() {
  37         final NetconfServerDispatcher dispatch = getDispatcherDependency();
  38
  39         final LocalAddress localAddress = new LocalAddress(getPort().toString());
  40         final ChannelFuture localServer = dispatch.createLocalServer(localAddress);
  41
  42         final SshProxyServer sshProxyServer = new SshProxyServer(Executors.newScheduledThreadPool(1), getWorkerThreadGroupDependency(), getEventExecutorDependency());
  43
  44         final InetSocketAddress bindingAddress = getInetAddress();
  45         final SshProxyServerConfigurationBuilder sshProxyServerConfigurationBuilder = new SshProxyServerConfigurationBuilder();
  46         sshProxyServerConfigurationBuilder.setBindingAddress(bindingAddress);
  47         sshProxyServerConfigurationBuilder.setLocalAddress(localAddress);
  48         sshProxyServerConfigurationBuilder.setAuthenticator(getAuthProviderDependency());
  49         sshProxyServerConfigurationBuilder.setIdleTimeout(Integer.MAX_VALUE);
  50         sshProxyServerConfigurationBuilder.setKeyPairProvider(new PEMGeneratorHostKeyProvider());
  51
  52         localServer.addListener(new GenericFutureListener<ChannelFuture>() {
  53
  54             @Override
  55             public void operationComplete(final ChannelFuture future) {
  56                 if(future.isDone() && !future.isCancelled()) {
  57                     try {
  58                         sshProxyServer.bind(sshProxyServerConfigurationBuilder.createSshProxyServerConfiguration());
  59                         LOG.info("Netconf SSH endpoint started successfully at {}", bindingAddress);
  60                     } catch (final IOException e) {
  61                         throw new RuntimeException("Unable to start SSH netconf server", e);
  62                     }
  63                 } else {
  64                     LOG.warn("Unable to start SSH netconf server at {}", bindingAddress, future.cause());
  65                     throw new RuntimeException("Unable to start SSH netconf server", future.cause());
  66                 }
  67             }
  68         });
  69
  70         return new NetconfServerCloseable(localServer, sshProxyServer);
  71     }
  72
  73     private InetSocketAddress getInetAddress() {
  74         try {
  75             final InetAddress inetAd = InetAddress.getByName(getBindingAddress().getIpv4Address() == null ? getBindingAddress().getIpv6Address().getValue() : getBindingAddress().getIpv4Address().getValue());
  76             return new InetSocketAddress(inetAd, getPort().getValue());
  77         } catch (final UnknownHostException e) {
  78             throw new IllegalArgumentException("Unable to bind netconf endpoint to address " + getBindingAddress(), e);
  79         }
  80     }
  81
  82     private static final class NetconfServerCloseable implements AutoCloseable {
  83         private final ChannelFuture localServer;
  84         private final SshProxyServer sshProxyServer;
  85
  86         public NetconfServerCloseable(final ChannelFuture localServer, final SshProxyServer sshProxyServer) {
  87             this.localServer = localServer;
  88             this.sshProxyServer = sshProxyServer;
  89         }
  90
  91         @Override
  92         public void close() throws Exception {
  93             sshProxyServer.close();
  94
  95             if(localServer.isDone()) {
  96                 localServer.channel().close();
  97             } else {
  98                 localServer.cancel(true);
  99             }
 100         }
 101     }
 102 }