Simple software switch pipeline.
Change-Id: Iaaee946967cb339a875564d962d3467899df0d31
diff --git a/drivers/src/main/java/org/onosproject/driver/handshaker/CorsaSwitchHandShaker.java b/drivers/src/main/java/org/onosproject/driver/handshaker/CorsaSwitchHandShaker.java
new file mode 100644
index 0000000..f4a45b8
--- /dev/null
+++ b/drivers/src/main/java/org/onosproject/driver/handshaker/CorsaSwitchHandShaker.java
@@ -0,0 +1,92 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.driver.handshaker;
+
+import org.onosproject.openflow.controller.driver.AbstractOpenFlowSwitch;
+import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeAlreadyStarted;
+import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeCompleted;
+import org.onosproject.openflow.controller.driver.SwitchDriverSubHandshakeNotStarted;
+import org.projectfloodlight.openflow.protocol.OFBarrierRequest;
+import org.projectfloodlight.openflow.protocol.OFFlowMod;
+import org.projectfloodlight.openflow.protocol.OFMessage;
+import org.projectfloodlight.openflow.protocol.OFType;
+import org.projectfloodlight.openflow.types.OFGroup;
+import org.projectfloodlight.openflow.types.TableId;
+
+import java.util.Collections;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+
+/**
+ * Corsa switch handshaker.
+ */
+public class CorsaSwitchHandShaker extends AbstractOpenFlowSwitch {
+
+ private AtomicBoolean handShakeComplete = new AtomicBoolean(false);
+
+ private int barrierXid;
+
+
+ @Override
+ public Boolean supportNxRole() {
+ return false;
+ }
+
+ @Override
+ public void startDriverHandshake() {
+ if (startDriverHandshakeCalled) {
+ throw new SwitchDriverSubHandshakeAlreadyStarted();
+ }
+ startDriverHandshakeCalled = true;
+ OFFlowMod fm = factory().buildFlowDelete()
+ .setTableId(TableId.ALL)
+ .setOutGroup(OFGroup.ANY)
+ .build();
+
+ sendMsg(Collections.singletonList(fm));
+
+ barrierXid = getNextTransactionId();
+ OFBarrierRequest barrier = factory().buildBarrierRequest()
+ .setXid(barrierXid).build();
+
+
+ sendHandshakeMessage(barrier);
+
+ }
+
+ @Override
+ public boolean isDriverHandshakeComplete() {
+ if (!startDriverHandshakeCalled) {
+ throw new SwitchDriverSubHandshakeAlreadyStarted();
+ }
+ return handShakeComplete.get();
+ }
+
+ @Override
+ public void processDriverHandshakeMessage(OFMessage m) {
+ if (!startDriverHandshakeCalled) {
+ throw new SwitchDriverSubHandshakeNotStarted();
+ }
+ if (handShakeComplete.get()) {
+ throw new SwitchDriverSubHandshakeCompleted(m);
+ }
+ if (m.getType() == OFType.BARRIER_REPLY &&
+ m.getXid() == barrierXid) {
+ handShakeComplete.set(true);
+ }
+ }
+
+}