Fixed inappropriate uses of log level INFO

[controller.git] / opendaylight / netconf / netconf-ssh / src / main / java / org / opendaylight / controller / netconf / osgi / NetconfSSHActivator.java

diff --git a/opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/netconf/osgi/NetconfSSHActivator.java b/opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/netconf/osgi/NetconfSSHActivator.java
index b5e86e05c163f04ec9ba9b80951575b3762dd7f0..91624007d069701ee49eb0cc4a23412b95cae047 100644 (file)
--- a/opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/netconf/osgi/NetconfSSHActivator.java
+++ b/opendaylight/netconf/netconf-ssh/src/main/java/org/opendaylight/controller/netconf/osgi/NetconfSSHActivator.java
@@ -7,19 +7,117 @@
  */
 package org.opendaylight.controller.netconf.osgi;
 
+import com.google.common.base.Optional;
+import java.io.FileInputStream;
+import java.net.InetSocketAddress;
 import org.opendaylight.controller.netconf.ssh.NetconfSSHServer;
+import org.opendaylight.controller.netconf.ssh.authentication.AuthProvider;
+import org.opendaylight.controller.netconf.util.osgi.NetconfConfigUtil;
+import org.opendaylight.controller.usermanager.IUserManager;
 import org.osgi.framework.BundleActivator;
 import org.osgi.framework.BundleContext;
+import org.osgi.framework.ServiceReference;
+import org.osgi.util.tracker.ServiceTracker;
+import org.osgi.util.tracker.ServiceTrackerCustomizer;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
 
+/**
+ * Activator for netconf SSH bundle which creates SSH bridge between netconf client and netconf server. Activator
+ * starts SSH Server in its own thread. This thread is closed when activator calls stop() method. Server opens socket
+ * and listen for client connections. Each client connection creation is handled in separate
+ * {@link org.opendaylight.controller.netconf.ssh.threads.SocketThread} thread.
+ * This thread creates two additional threads {@link org.opendaylight.controller.netconf.ssh.threads.IOThread}
+ * forwarding data from/to client.IOThread closes servers session and server connection when it gets -1 on input stream.
+ * {@link org.opendaylight.controller.netconf.ssh.threads.IOThread}'s run method waits for -1 on input stream to finish.
+ * All threads are daemons.
+ **/
 public class NetconfSSHActivator implements BundleActivator{
 
+    private NetconfSSHServer server;
+    private static final Logger logger =  LoggerFactory.getLogger(NetconfSSHActivator.class);
+    private static final String EXCEPTION_MESSAGE = "Netconf ssh bridge is not available.";
+    private IUserManager iUserManager;
+    private BundleContext context = null;
+
+    ServiceTrackerCustomizer<IUserManager, IUserManager> customizer = new ServiceTrackerCustomizer<IUserManager, IUserManager>(){
+        @Override
+        public IUserManager addingService(ServiceReference<IUserManager> reference) {
+            logger.trace("Service {} added, let there be SSH bridge.", reference);
+            iUserManager =  context.getService(reference);
+            try {
+                onUserManagerFound(iUserManager);
+            } catch (Exception e) {
+                logger.trace("Can't start SSH server due to {}",e);
+            }
+            return iUserManager;
+        }
+        @Override
+        public void modifiedService(ServiceReference<IUserManager> reference, IUserManager service) {
+            logger.trace("Replacing modified service {} in netconf SSH.", reference);
+            server.addUserManagerService(service);
+        }
+        @Override
+        public void removedService(ServiceReference<IUserManager> reference, IUserManager service) {
+            logger.trace("Removing service {} from netconf SSH. " +
+                    "SSH won't authenticate users until IUserManeger service will be started.", reference);
+            removeUserManagerService();
+        }
+    };
+
+
     @Override
     public void start(BundleContext context) throws Exception {
-        NetconfSSHServer.start();
+        this.context = context;
+        listenForManagerService();
     }
 
     @Override
     public void stop(BundleContext context) throws Exception {
+        if (server != null){
+            server.stop();
+            logger.trace("Netconf SSH bridge is down ...");
+        }
+    }
+    private void startSSHServer() throws Exception {
+        logger.trace("Starting netconf SSH  bridge.");
+        Optional<InetSocketAddress> sshSocketAddressOptional = NetconfConfigUtil.extractSSHNetconfAddress(context, EXCEPTION_MESSAGE);
+        InetSocketAddress tcpSocketAddress = NetconfConfigUtil.extractTCPNetconfAddress(context,
+                EXCEPTION_MESSAGE, true);
+
+        if (sshSocketAddressOptional.isPresent()){
+            String path = NetconfConfigUtil.getPrivateKeyPath(context);
+            path = path.replace("\\", "/");
+            if (path.equals("")){
+                throw new Exception("Missing netconf.ssh.pk.path key in configuration file.");
+            }
 
+            try (FileInputStream fis = new FileInputStream(path)){
+                AuthProvider authProvider = new AuthProvider(iUserManager,fis);
+                this.server = NetconfSSHServer.start(sshSocketAddressOptional.get().getPort(),tcpSocketAddress,authProvider);
+            }
+
+            Thread serverThread = new  Thread(server,"netconf SSH server thread");
+            serverThread.setDaemon(true);
+            serverThread.start();
+            logger.trace("Netconf SSH  bridge up and running.");
+        } else {
+            logger.trace("No valid connection configuration for SSH bridge found.");
+            throw new Exception("No valid connection configuration for SSH bridge found.");
+        }
+    }
+    private void onUserManagerFound(IUserManager userManager) throws Exception{
+        if (server!=null && server.isUp()){
+           server.addUserManagerService(userManager);
+        } else {
+           startSSHServer();
+        }
+    }
+    private void removeUserManagerService(){
+        this.server.removeUserManagerService();
+    }
+    private void listenForManagerService(){
+        ServiceTracker<IUserManager, IUserManager> listenerTracker = new ServiceTracker<>(context, IUserManager.class,customizer);
+        listenerTracker.open();
     }
 }