Merge "Refactor Subnet.isSubnetOf - reduce number of 'if' statements. Added unitests."

[controller.git] / opendaylight / netconf / netconf-util / src / main / java / org / opendaylight / controller / netconf / util / messages / NetconfMessageFactory.java

diff --git a/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageFactory.java b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageFactory.java
index 029d2ba7595c2a7fabb0f2ec74511fcf8b166184..526708ab580238e34ba26a1c70a1d89289571ca6 100644 (file)
--- a/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageFactory.java
+++ b/opendaylight/netconf/netconf-util/src/main/java/org/opendaylight/controller/netconf/util/messages/NetconfMessageFactory.java
@@ -8,9 +8,12 @@
 
 package org.opendaylight.controller.netconf.util.messages;
 
-import com.google.common.base.Charsets;
-import com.google.common.base.Optional;
-import com.google.common.collect.Lists;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import java.util.List;
+
 import org.opendaylight.controller.netconf.api.NetconfDeserializerException;
 import org.opendaylight.controller.netconf.api.NetconfMessage;
 import org.opendaylight.controller.netconf.util.xml.XmlUtil;
@@ -24,11 +27,9 @@ import org.w3c.dom.Comment;
 import org.w3c.dom.Document;
 import org.xml.sax.SAXException;
 
-import java.io.ByteArrayInputStream;
-import java.io.IOException;
-import java.nio.ByteBuffer;
-import java.util.Arrays;
-import java.util.List;
+import com.google.common.base.Charsets;
+import com.google.common.base.Optional;
+import com.google.common.collect.Lists;
 
 /**
  * NetconfMessageFactory for (de)serializing DOM documents.
@@ -37,12 +38,6 @@ public final class NetconfMessageFactory implements ProtocolMessageFactory<Netco
 
     private static final Logger logger = LoggerFactory.getLogger(NetconfMessageFactory.class);
 
-    public static final byte[] endOfMessage = "]]>]]>".getBytes(Charsets.UTF_8);
-
-    public static final byte[] endOfChunk = "\n##\n".getBytes(Charsets.UTF_8);
-
-    public static final int MAX_CHUNK_SIZE = 1024; // Bytes
-
     private final Optional<String> clientId;
 
     public NetconfMessageFactory() {
@@ -54,25 +49,64 @@ public final class NetconfMessageFactory implements ProtocolMessageFactory<Netco
     }
 
     @Override
-    public List<NetconfMessage> parse(byte[] bytes) throws DeserializerException, DocumentedException {
-        String s = Charsets.UTF_8.decode(ByteBuffer.wrap(bytes)).toString();
-        logger.debug("Parsing message \n{}", s);
-        if (bytes[0] == '[') {
-            // yuma sends auth information in the first line. Ignore until ]\n
-            // is found.
-            int endOfAuthHeader = ByteArray.findByteSequence(bytes, new byte[] { ']', '\n' });
+    public NetconfMessage parse(byte[] bytes) throws DeserializerException, DocumentedException {
+        logMessage(bytes);
+
+        String additionalHeader = null;
+
+        if (startsWithAdditionalHeader(bytes)) {
+            // Auth information containing username, ip address... extracted for monitoring
+            int endOfAuthHeader = getAdditionalHeaderEndIndex(bytes);
             if (endOfAuthHeader > -1) {
+                byte[] additionalHeaderBytes = Arrays.copyOfRange(bytes, 0, endOfAuthHeader + 2);
+                additionalHeader = additionalHeaderToString(additionalHeaderBytes);
                 bytes = Arrays.copyOfRange(bytes, endOfAuthHeader + 2, bytes.length);
             }
         }
-        List<NetconfMessage> messages = Lists.newArrayList();
+        NetconfMessage message;
         try {
             Document doc = XmlUtil.readXmlToDocument(new ByteArrayInputStream(bytes));
-            messages.add(new NetconfMessage(doc));
+            message = new NetconfMessage(doc, additionalHeader);
         } catch (final SAXException | IOException | IllegalStateException e) {
             throw new NetconfDeserializerException("Could not parse message from " + new String(bytes), e);
         }
-        return messages;
+        return message;
+    }
+
+    private int getAdditionalHeaderEndIndex(byte[] bytes) {
+        for (String possibleEnd : Lists.newArrayList("]\n", "]\r\n")) {
+            int idx = ByteArray.findByteSequence(bytes, possibleEnd.getBytes(Charsets.UTF_8));
+
+            if (idx != -1) {
+                return idx;
+            }
+        }
+
+        return -1;
+    }
+
+    private boolean startsWithAdditionalHeader(byte[] bytes) {
+        List<String> possibleStarts = Lists.newArrayList("[", "\r\n[", "\n[");
+        for (String possibleStart : possibleStarts) {
+            int i = 0;
+            for (byte b : possibleStart.getBytes(Charsets.UTF_8)) {
+                if(bytes[i]!=b)
+                    break;
+
+                return true;
+            }
+        }
+
+        return false;
+    };
+
+    private void logMessage(byte[] bytes) {
+        String s = Charsets.UTF_8.decode(ByteBuffer.wrap(bytes)).toString();
+        logger.debug("Parsing message \n{}", s);
+    }
+
+    private String additionalHeaderToString(byte[] bytes) {
+        return Charsets.UTF_8.decode(ByteBuffer.wrap(bytes)).toString();
     }
 
     @Override
@@ -81,11 +115,18 @@ public final class NetconfMessageFactory implements ProtocolMessageFactory<Netco
             Comment comment = netconfMessage.getDocument().createComment("clientId:" + clientId.get());
             netconfMessage.getDocument().appendChild(comment);
         }
-        final ByteBuffer msgBytes = Charsets.UTF_8.encode(xmlToString(netconfMessage.getDocument()));
+        ByteBuffer msgBytes;
+        if(netconfMessage.getAdditionalHeader().isPresent()) {
+            String header = netconfMessage.getAdditionalHeader().get();
+            logger.trace("Header of netconf message parsed \n{}", header);
+            msgBytes = Charsets.UTF_8.encode(header + xmlToString(netconfMessage.getDocument()));
+        } else {
+            msgBytes = Charsets.UTF_8.encode(xmlToString(netconfMessage.getDocument()));
+        }
         String content = xmlToString(netconfMessage.getDocument());
 
         logger.trace("Putting message \n{}", content);
-        byte[] b = new byte[msgBytes.remaining()];
+        byte[] b = new byte[msgBytes.limit()];
         msgBytes.get(b);
         return b;
     }