Added Cassini drivers used at ONF connect

Change-Id: I05219d11bd45d147ef2dfa750853c39a9f26d240
diff --git a/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/CassiniTransceiver.java b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/CassiniTransceiver.java
new file mode 100755
index 0000000..0a23450
--- /dev/null
+++ b/apps/odtn/api/src/main/java/org/onosproject/odtn/behaviour/CassiniTransceiver.java
@@ -0,0 +1,121 @@
+/*
+ * Copyright 2018-present Open Networking Foundation
+ *
+ * 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.odtn.behaviour;
+
+import com.google.common.base.Strings;
+import org.onosproject.net.DeviceId;
+import org.onosproject.net.Port;
+import org.onosproject.net.PortNumber;
+import org.onosproject.net.device.DeviceService;
+import org.onosproject.net.driver.AbstractHandlerBehaviour;
+import org.onosproject.odtn.behaviour.OdtnTerminalDeviceDriver.Operation;
+import org.onosproject.odtn.utils.openconfig.OpenConfigAssignmentHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigChannelHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigConfigOfAssignmentHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigConfigOfChannelHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigLogicalChannelAssignmentsHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigLogicalChannelsHandler;
+import org.onosproject.odtn.utils.openconfig.OpenConfigTerminalDeviceHandler;
+import org.onosproject.yang.gen.v1.openconfigterminaldevice.rev20170708.openconfigterminaldevice.terminallogicalchanassignmentconfig.AssignmentTypeEnum;
+import org.slf4j.Logger;
+
+import java.math.BigDecimal;
+import java.util.Collections;
+import java.util.List;
+
+import static org.onosproject.odtn.behaviour.OdtnDeviceDescriptionDiscovery.OC_NAME;
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Utility class for NETCONF driver.
+ */
+public class CassiniTransceiver extends AbstractHandlerBehaviour
+        implements ConfigurableTransceiver {
+
+    private final Logger log = getLogger(getClass());
+
+    private static final String ANOTATION_NAME   = "xc:operation";
+
+    @Override
+    public List<CharSequence> enable(PortNumber client, PortNumber line, boolean enable) {
+
+        log.debug("enable() cassini route");
+        DeviceId did = this.data().deviceId();
+        Port clientPort = handler().get(DeviceService.class).getPort(did, client);
+        if (clientPort == null) {
+            log.warn("{} does not exist on {}", client, did);
+            return Collections.emptyList();
+        }
+        String clientName = clientPort.annotations().value(OC_NAME);
+        if (Strings.isNullOrEmpty(clientName)) {
+            log.warn("{} annotations not exist on {}@{}", OC_NAME, client, did);
+            return Collections.emptyList();
+        }
+
+        Port linePort = handler().get(DeviceService.class).getPort(did, line);
+        if (linePort == null) {
+            log.warn("{} does not exist on {}", line, did);
+            return Collections.emptyList();
+        }
+        String lineName = linePort.annotations().value(OC_NAME);
+        if (Strings.isNullOrEmpty(lineName)) {
+            log.warn("{} annotations not exist on {}@{}", OC_NAME, line, did);
+            return Collections.emptyList();
+        }
+
+        // create <terminal-device xmlns="http://openconfig.net/yang/terminal-device">
+        //        </terminal-device>
+        OpenConfigTerminalDeviceHandler terminalDevice = new OpenConfigTerminalDeviceHandler();
+
+        // add <logical-channels></logical-channels>
+        OpenConfigLogicalChannelsHandler logicalChannels =
+            new OpenConfigLogicalChannelsHandler(terminalDevice);
+
+        // add <channel><index>"clientName"</index></channel>
+        OpenConfigChannelHandler channel =
+            new OpenConfigChannelHandler(Integer.parseInt(clientName), logicalChannels);
+
+        // add <config><index>"clientName"</index></config>
+        OpenConfigConfigOfChannelHandler configOfChannel =
+            new OpenConfigConfigOfChannelHandler(channel);
+        configOfChannel.addIndex(Integer.parseInt(clientName));
+
+        // add <logical-channel-assignments></logical-channel-assignments>
+        OpenConfigLogicalChannelAssignmentsHandler logicalChannelAssignments =
+            new OpenConfigLogicalChannelAssignmentsHandler(channel);
+
+        // add <assignment (none)/xc:operation="delete"><index>"clientName"</index></assignment>
+        OpenConfigAssignmentHandler assignment =
+            new OpenConfigAssignmentHandler(Integer.parseInt(clientName), logicalChannelAssignments);
+        if (!enable) {
+            assignment.addAnnotation(ANOTATION_NAME, Operation.DELETE.value());
+        }
+
+        // add <config><index>"clientName"</index>
+        //             <assignment-type>LOGICAL_CHANNEL</assignment-type>
+        //             <logical-channel>"lineName"</logical-channel>
+        //             <allocation>100</allocation>
+        //     </config>
+        OpenConfigConfigOfAssignmentHandler configOfAssignment =
+            new OpenConfigConfigOfAssignmentHandler(assignment);
+        configOfAssignment.addIndex(Long.parseLong(clientName));
+        configOfAssignment.addAssignmentType(AssignmentTypeEnum.LOGICAL_CHANNEL);
+        configOfAssignment.addLogicalChannel(lineName);
+        configOfAssignment.addAllocation(BigDecimal.valueOf(100));
+
+        return terminalDevice.getListCharSequence();
+    }
+}