ONOS-5449 Implemented skeleton of OFAgent application
Change-Id: Ie6c719872549a004471e466a43a2b531bc48b231
diff --git a/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/OFConnectionHandler.java b/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/OFConnectionHandler.java
new file mode 100644
index 0000000..27a6bc5
--- /dev/null
+++ b/apps/ofagent/src/main/java/org/onosproject/ofagent/impl/OFConnectionHandler.java
@@ -0,0 +1,75 @@
+/*
+ * Copyright 2017-present 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.ofagent.impl;
+
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.nio.NioEventLoopGroup;
+import org.onosproject.ofagent.api.OFController;
+import org.onosproject.ofagent.api.OFSwitch;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.atomic.AtomicInteger;
+
+/**
+ * Implementation of OpenFlow connection handler.
+ * It retries a connection for a certain amount of time and then give up.
+ */
+public final class OFConnectionHandler implements ChannelFutureListener {
+
+ private final Logger log = LoggerFactory.getLogger(getClass());
+
+ private static final int MAX_RETRY = 10;
+
+ private final AtomicInteger retryCount = new AtomicInteger();
+ private final OFSwitch ofSwitch;
+ private final OFController controller;
+ private final NioEventLoopGroup workGroup;
+
+ /**
+ * Default constructor.
+ *
+ * @param ofSwitch openflow switch that initiates this connection
+ * @param controller controller to connect
+ * @param workGroup work group for connection
+ */
+ public OFConnectionHandler(OFSwitch ofSwitch, OFController controller,
+ NioEventLoopGroup workGroup) {
+ this.ofSwitch = ofSwitch;
+ this.controller = controller;
+ this.workGroup = workGroup;
+ }
+
+ /**
+ * Creates a connection to the supplied controller.
+ */
+ public void connect() {
+ // TODO initiates a connection to the controller
+ }
+
+ @Override
+ public void operationComplete(ChannelFuture future) throws Exception {
+
+ if (future.isSuccess()) {
+ log.debug("{} is connected to controller {}", ofSwitch.device().id(), controller);
+ // TODO do something for a new connection if there's any
+ } else {
+ log.debug("{} failed to connect {}, retry..", ofSwitch.device().id(), controller);
+ // TODO retry connect if retry count is less than MAX
+ }
+ }
+}