[GEANT] Add/remove-bgp-speaker/peer commands.

Change-Id: Iad8001095cc81be0c34c976adfa32ef9c7eff685
diff --git a/apps/sdnip/src/main/java/org/onosproject/sdnip/cli/RemoveSpeakerCommand.java b/apps/sdnip/src/main/java/org/onosproject/sdnip/cli/RemoveSpeakerCommand.java
new file mode 100644
index 0000000..6a51b42
--- /dev/null
+++ b/apps/sdnip/src/main/java/org/onosproject/sdnip/cli/RemoveSpeakerCommand.java
@@ -0,0 +1,87 @@
+/*
+ * Copyright 2014-2015 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.sdnip.cli;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.net.config.NetworkConfigService;
+import org.onosproject.routing.RoutingService;
+import org.onosproject.routing.config.BgpConfig;
+
+/**
+ * Command to remove a internal BGP speaker.
+ */
+@Command(scope = "onos", name = "remove-bgp-speaker",
+        description = "Removes an internal BGP speaker")
+public class RemoveSpeakerCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "name",
+            description = "Name of the internal BGP speaker",
+            required = true, multiValued = false)
+    String name = null;
+
+    private static final String SPEAKER_REMOVE_SUCCESS = "Speaker Successfully Removed.";
+    private static final String NO_CONFIGURATION = "No speakers configured";
+    private static final String PEERS_EXIST =
+            "Speaker with name \'%s\' has peer connections";
+    private static final String SPEAKER_NOT_FOUND =
+            "Speaker with name \'%s\' not found";
+
+    @Override
+    protected void execute() {
+        NetworkConfigService configService = get(NetworkConfigService.class);
+        CoreService coreService = get(CoreService.class);
+        ApplicationId appId = coreService.getAppId(RoutingService.ROUTER_APP_ID);
+
+        BgpConfig config = configService.getConfig(appId, BgpConfig.class);
+        if (config == null || config.bgpSpeakers().isEmpty()) {
+            print(NO_CONFIGURATION);
+            return;
+        }
+
+        BgpConfig.BgpSpeakerConfig speaker = config.getSpeakerWithName(name);
+        if (speaker == null) {
+            print(SPEAKER_NOT_FOUND, name);
+            return;
+        } else {
+            if (!speaker.peers().isEmpty()) {
+                // Removal not allowed when peer connections exist.
+                print(PEERS_EXIST, name);
+                return;
+            }
+        }
+
+        removeSpeakerFromConf(config);
+        configService.applyConfig(appId, BgpConfig.class, config.node());
+
+        print(SPEAKER_REMOVE_SUCCESS);
+    }
+
+    /**
+     * Removes the speaker from the BgpConfig service.
+     *
+     * @param bgpConfig the BGP configuration
+     */
+    private void removeSpeakerFromConf(BgpConfig bgpConfig) {
+        log.debug("Removing speaker from configuration: {}", name);
+
+        bgpConfig.removeSpeaker(name);
+    }
+}