ONOS-4086 to ONOS-4091, ONOS-4098 to ONOS-4100:ISIS controller implementation
Change-Id: I7be52805652fe762baf808515401d6b5042b2aa5
diff --git a/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java
new file mode 100755
index 0000000..9007093
--- /dev/null
+++ b/protocols/isis/ctl/src/main/java/org/onosproject/isis/controller/impl/lsdb/IsisLspQueueConsumer.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright 2016-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.isis.controller.impl.lsdb;
+
+import org.jboss.netty.channel.Channel;
+import org.onosproject.isis.controller.IsisLsdb;
+import org.onosproject.isis.controller.IsisPduType;
+import org.onosproject.isis.controller.LspWrapper;
+import org.onosproject.isis.controller.impl.DefaultIsisInterface;
+import org.onosproject.isis.io.isispacket.pdu.LsPdu;
+import org.onosproject.isis.io.util.IsisConstants;
+import org.onosproject.isis.io.util.IsisUtil;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.util.concurrent.BlockingQueue;
+
+/**
+ * Representation of LSP queue consumer.
+ */
+public class IsisLspQueueConsumer implements Runnable {
+ private static final Logger log = LoggerFactory.getLogger(IsisLspQueueConsumer.class);
+ private BlockingQueue queue = null;
+
+ /**
+ * Creates an instance of LSP queue consumer.
+ *
+ * @param queue queue instance
+ */
+ public IsisLspQueueConsumer(BlockingQueue queue) {
+ this.queue = queue;
+ }
+
+ /**
+ * Gets the LSP wrapper instance from queue and process it.
+ */
+ @Override
+ public void run() {
+ log.debug("LSPQueueConsumer:run...!!!");
+ try {
+ while (true) {
+ if (!queue.isEmpty()) {
+ LspWrapper wrapper = (LspWrapper) queue.take();
+ String lspProcessing = wrapper.lspProcessing();
+ switch (lspProcessing) {
+ case IsisConstants.REFRESHLSP:
+ log.debug("LSPQueueConsumer: Message - " + IsisConstants.REFRESHLSP +
+ " consumed.");
+ processRefreshLsp(wrapper);
+ break;
+ case IsisConstants.MAXAGELSP:
+ log.debug("LSPQueueConsumer: Message - " + IsisConstants.MAXAGELSP +
+ " consumed.");
+ processMaxAgeLsa(wrapper);
+ break;
+ default:
+ log.debug("Unknown command to process the LSP in queue ...!!!");
+ break;
+ }
+ }
+ }
+
+ } catch (Exception e) {
+ log.debug("Error::LSPQueueConsumer::{}", e.getMessage());
+ }
+ }
+
+ /**
+ * Process refresh LSP.
+ *
+ * @param wrapper LSP wrapper instance
+ */
+ private void processRefreshLsp(LspWrapper wrapper) throws Exception {
+ if (wrapper.isSelfOriginated()) { //self originated
+ DefaultIsisInterface isisInterface = (DefaultIsisInterface) wrapper.isisInterface();
+ Channel channel = isisInterface.channel();
+ if (channel != null && channel.isConnected()) {
+ LsPdu lsPdu = (LsPdu) wrapper.lsPdu();
+ lsPdu.setSequenceNumber(isisInterface.isisLsdb().lsSequenceNumber(
+ IsisPduType.get(lsPdu.pduType())));
+ lsPdu.setRemainingLifeTime(IsisConstants.LSPMAXAGE);
+ byte[] lspBytes = lsPdu.asBytes();
+ lspBytes = IsisUtil.addLengthAndMarkItInReserved(lspBytes, IsisConstants.LENGTHPOSITION,
+ IsisConstants.LENGTHPOSITION + 1,
+ IsisConstants.RESERVEDPOSITION);
+ lspBytes = IsisUtil.addChecksum(lspBytes, IsisConstants.CHECKSUMPOSITION,
+ IsisConstants.CHECKSUMPOSITION + 1);
+ //write to the channel
+ channel.write(IsisUtil.framePacket(lspBytes, isisInterface.interfaceIndex()));
+
+ log.debug("LSPQueueConsumer: processRefreshLsp - Flooded SelfOriginated LSP {}",
+ wrapper.lsPdu());
+ }
+
+ }
+ }
+
+ /**
+ * Process max age LSP.
+ *
+ * @param wrapper LSP wrapper instance
+ */
+ private void processMaxAgeLsa(LspWrapper wrapper) {
+ //set the destination
+ DefaultIsisInterface isisInterface = (DefaultIsisInterface) wrapper.isisInterface();
+ if (isisInterface != null) {
+ //delete from db
+ LsPdu lsPdu = (LsPdu) wrapper.lsPdu();
+ IsisLsdb isisDb = isisInterface.isisLsdb();
+ isisDb.deleteLsp(lsPdu);
+ log.debug("LSPQueueConsumer: processMaxAgeLsp - Removed-Max Age LSP {}",
+ wrapper.lsPdu());
+ }
+ }
+}
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