Extension support - easy lookup for toOFJava

[openflowplugin.git] / extension / openflowjava-extension-nicira-api / src / main / java / org / opendaylight / openflowjava / nx / api / impl / ActionDeserializer.java

diff --git a/extension/openflowjava-extension-nicira-api/src/main/java/org/opendaylight/openflowjava/nx/api/impl/ActionDeserializer.java b/extension/openflowjava-extension-nicira-api/src/main/java/org/opendaylight/openflowjava/nx/api/impl/ActionDeserializer.java
new file mode 100644 (file)
index 0000000..c2dc4eb
--- /dev/null
+++ b/extension/openflowjava-extension-nicira-api/src/main/java/org/opendaylight/openflowjava/nx/api/impl/ActionDeserializer.java
@@ -0,0 +1,54 @@
+package org.opendaylight.openflowjava.nx.api.impl;
+
+import io.netty.buffer.ByteBuf;
+
+import org.opendaylight.openflowjava.nx.api.NiciraActionDeserializerKey;
+import org.opendaylight.openflowjava.nx.api.NiciraConstants;
+import org.opendaylight.openflowjava.protocol.api.extensibility.OFDeserializer;
+import org.opendaylight.openflowjava.protocol.api.keys.experimenter.ExperimenterActionDeserializerKey;
+import org.opendaylight.openflowjava.protocol.api.util.EncodeConstants;
+import org.opendaylight.yang.gen.v1.urn.opendaylight.openflow.common.action.rev130731.actions.grouping.Action;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class ActionDeserializer implements OFDeserializer<Action> {
+
+    private static final Logger LOG = LoggerFactory.getLogger(ActionDeserializer.class);
+
+    public static final ExperimenterActionDeserializerKey OF13_DESERIALIZER_KEY = new ExperimenterActionDeserializerKey(
+            EncodeConstants.OF13_VERSION_ID, NiciraConstants.NX_VENDOR_ID);
+    public static final ExperimenterActionDeserializerKey OF10_DESERIALIZER_KEY = new ExperimenterActionDeserializerKey(
+            EncodeConstants.OF10_VERSION_ID, NiciraConstants.NX_VENDOR_ID);
+
+    private final short version;
+
+    /**
+     * @param version protocol wire version
+     */
+    public ActionDeserializer(short version) {
+        this.version = version;
+    }
+
+    @Override
+    public Action deserialize(ByteBuf message) {
+        int startPossition = message.readerIndex();
+        // size of experimenter type
+        message.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
+        // size of length
+        message.skipBytes(EncodeConstants.SIZE_OF_SHORT_IN_BYTES);
+        long experimenterId = message.readUnsignedInt();
+        if (NiciraConstants.NX_VENDOR_ID != experimenterId) {
+            throw new IllegalStateException("Experimenter ID is not Nicira vendor id but is " + experimenterId);
+        }
+        int subtype = message.readUnsignedShort();
+        NiciraActionDeserializerKey key = new NiciraActionDeserializerKey(version, subtype);
+        OFDeserializer<Action> actionDeserializer = NiciraExtensionCodecRegistratorImpl.getActionDeserializer(key);
+        if (actionDeserializer == null) {
+            LOG.info("No deserializer was found for key {}", key);
+            return null;
+        }
+        message.readerIndex(startPossition);
+        return actionDeserializer.deserialize(message);
+    }
+
+}