X-Git-Url: https://git.opendaylight.org/gerrit/gitweb?a=blobdiff_plain;f=opendaylight%2Fnetconf%2Fnetconf-util%2Fsrc%2Fmain%2Fjava%2Forg%2Fopendaylight%2Fcontroller%2Fnetconf%2Futil%2Fmessages%2FNetconfMessageUtil.java;h=3c6b6ccab9efa0a0a28b5630da5d5c9f30157610;hb=95115ca49f3b16b936e0f6c88aedfc17cd0ee92c;hp=3e8040ad8a1d87e916415795e08e38814963537b;hpb=f0f2ca29ae8b5caa769a77854fc5ac883b0a2264;p=controller.git

diff --git a/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageUtil.java b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageUtil.java
index 3e8040ad8a..3c6b6ccab9 100644
--- a/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageUtil.java
+++ b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageUtil.java
@@ -9,8 +9,11 @@
 package org.opendaylight.controller.netconf.util.messages;
 
 import com.google.common.base.Function;
+import com.google.common.base.Optional;
 import com.google.common.collect.Collections2;
-
+import java.util.Collection;
+import java.util.List;
+import javax.annotation.Nonnull;
 import org.opendaylight.controller.netconf.api.NetconfDocumentedException;
 import org.opendaylight.controller.netconf.api.NetconfMessage;
 import org.opendaylight.controller.netconf.api.xml.XmlNetconfConstants;
@@ -19,14 +22,9 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.w3c.dom.Document;
 
-import javax.annotation.Nullable;
-
-import java.util.Collection;
-import java.util.List;
-
 public final class NetconfMessageUtil {
 
-    private static final Logger logger = LoggerFactory.getLogger(NetconfMessageUtil.class);
+    private static final Logger LOG = LoggerFactory.getLogger(NetconfMessageUtil.class);
 
     private NetconfMessageUtil() {}
 
@@ -62,19 +60,22 @@ public final class NetconfMessageUtil {
 
     public static Collection<String> extractCapabilitiesFromHello(Document doc) throws NetconfDocumentedException {
         XmlElement responseElement = XmlElement.fromDomDocument(doc);
-        XmlElement capabilitiesElement = responseElement
-                .getOnlyChildElementWithSameNamespace(XmlNetconfConstants.CAPABILITIES);
-        List<XmlElement> caps = capabilitiesElement.getChildElements(XmlNetconfConstants.CAPABILITY);
+        // Extract child element <capabilities> from <hello> with or without(fallback) the same namespace
+        Optional<XmlElement> capabilitiesElement = responseElement
+                .getOnlyChildElementWithSameNamespaceOptionally(XmlNetconfConstants.CAPABILITIES)
+                .or(responseElement
+                        .getOnlyChildElementOptionally(XmlNetconfConstants.CAPABILITIES));
+
+        List<XmlElement> caps = capabilitiesElement.get().getChildElements(XmlNetconfConstants.CAPABILITY);
         return Collections2.transform(caps, new Function<XmlElement, String>() {
 
-            @Nullable
             @Override
-            public String apply(@Nullable XmlElement input) {
+            public String apply(@Nonnull XmlElement input) {
                 // Trim possible leading/tailing whitespace
                 try {
                     return input.getTextContent().trim();
                 } catch (NetconfDocumentedException e) {
-                    logger.trace("Error fetching inpit text content becauese {}",e);
+                    LOG.trace("Error fetching input text content",e);
                     return null;
                 }
             }