Explain SuppressFBWarnings

[netconf.git] / netconf / netconf-client / src / main / java / org / opendaylight / netconf / client / NetconfClientSessionNegotiator.java

diff --git a/netconf/netconf-client/src/main/java/org/opendaylight/netconf/client/NetconfClientSessionNegotiator.java b/netconf/netconf-client/src/main/java/org/opendaylight/netconf/client/NetconfClientSessionNegotiator.java
index 3212754c26a435e8b6ffff2d005f5d6211d50264..6a55bdb9aa663c10545bb3cd5cbb4c1e1b83c1da 100644 (file)
--- a/netconf/netconf-client/src/main/java/org/opendaylight/netconf/client/NetconfClientSessionNegotiator.java
+++ b/netconf/netconf-client/src/main/java/org/opendaylight/netconf/client/NetconfClientSessionNegotiator.java
@@ -5,7 +5,6 @@
  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
  * and is available at http://www.eclipse.org/legal/epl-v10.html
  */
-
 package org.opendaylight.netconf.client;
 
 import com.google.common.base.Strings;
@@ -14,8 +13,6 @@ import com.google.common.collect.Interner;
 import com.google.common.collect.Interners;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import io.netty.channel.Channel;
-import io.netty.channel.ChannelFuture;
-import io.netty.channel.ChannelFutureListener;
 import io.netty.channel.ChannelHandlerContext;
 import io.netty.channel.ChannelInboundHandlerAdapter;
 import io.netty.util.Timer;
@@ -64,9 +61,21 @@ public class NetconfClientSessionNegotiator extends
         super(sessionPreferences, promise, channel, timer, sessionListener, connectionTimeoutMillis);
     }
 
+    @SuppressWarnings("checkstyle:IllegalCatch")
+    @SuppressFBWarnings(value = "BC_UNCONFIRMED_CAST",
+        justification = "SpotBugs does not understand generic cast of sessionPreferences")
     @Override
-    @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
     protected void handleMessage(final NetconfHelloMessage netconfMessage) throws NetconfDocumentedException {
+        if (!ifNegotiatedAlready()) {
+            LOG.debug("Server hello message received, starting negotiation on channel {}", channel);
+            try {
+                startNegotiation();
+            } catch (final Exception e) {
+                LOG.warn("Unexpected negotiation failure on channel {}", channel, e);
+                negotiationFailed(e);
+                return;
+            }
+        }
         final NetconfClientSession session = getSessionForHelloMessage(netconfMessage);
         replaceHelloMessageInboundHandler(session);
 
@@ -93,21 +102,19 @@ public class NetconfClientSessionNegotiator extends
                 ExiConfirmationInboundHandler.EXI_CONFIRMED_HANDLER,
                 new ExiConfirmationInboundHandler(session, startExiMessage));
 
-        session.sendMessage(startExiMessage).addListener(new ChannelFutureListener() {
-            @Override
-            public void operationComplete(final ChannelFuture channelFuture) {
-                if (!channelFuture.isSuccess()) {
-                    LOG.warn("Failed to send start-exi message {} on session {}", startExiMessage, this,
-                            channelFuture.cause());
-                    channel.pipeline().remove(ExiConfirmationInboundHandler.EXI_CONFIRMED_HANDLER);
-                } else {
-                    LOG.trace("Start-exi message {} sent to socket on session {}", startExiMessage, this);
-                }
+        session.sendMessage(startExiMessage).addListener(channelFuture -> {
+            if (!channelFuture.isSuccess()) {
+                LOG.warn("Failed to send start-exi message {} on session {}", startExiMessage, session,
+                        channelFuture.cause());
+                channel.pipeline().remove(ExiConfirmationInboundHandler.EXI_CONFIRMED_HANDLER);
+            } else {
+                LOG.trace("Start-exi message {} sent to socket on session {}", startExiMessage, session);
             }
         });
     }
 
-    @SuppressFBWarnings("BC_UNCONFIRMED_CAST")
+    @SuppressFBWarnings(value = "BC_UNCONFIRMED_CAST",
+        justification = "SpotBugs does not understand generic cast of sessionPreferences")
     private boolean shouldUseExi(final NetconfHelloMessage helloMsg) {
         return containsExi10Capability(helloMsg.getDocument())
                 && containsExi10Capability(sessionPreferences.getHelloMessage().getDocument());
@@ -143,7 +150,7 @@ public class NetconfClientSessionNegotiator extends
 
     @Override
     protected NetconfClientSession getSession(final NetconfClientSessionListener sessionListener, final Channel channel,
-                                              final NetconfHelloMessage message) throws NetconfDocumentedException {
+                                              final NetconfHelloMessage message) {
         final long sessionId = extractSessionId(message.getDocument());
 
         // Copy here is important: it disconnects the strings from the document