Adding mfwd, igmp and mfwd apps

Change-Id: Ie7187716db36b754e4cd687a8f9de004e27c7825

adding mfwd, pim, igmp apps

Change-Id: Iddd2dcee24dc905d5ff0efe1d1d798fc83a7c736
diff --git a/apps/mfwd/src/main/java/org/onosproject/mfwd/cli/McastShowCommand.java b/apps/mfwd/src/main/java/org/onosproject/mfwd/cli/McastShowCommand.java
new file mode 100644
index 0000000..750fac9
--- /dev/null
+++ b/apps/mfwd/src/main/java/org/onosproject/mfwd/cli/McastShowCommand.java
@@ -0,0 +1,96 @@
+/*
+ * 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.mfwd.cli;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.ConnectPoint;
+import org.onlab.packet.IpPrefix;
+
+import java.util.Map;
+import java.util.Set;
+
+import org.slf4j.Logger;
+import org.onosproject.mfwd.impl.McastRouteTable;
+import org.onosproject.mfwd.impl.McastRouteGroup;
+
+import com.fasterxml.jackson.databind.JsonNode;
+import com.fasterxml.jackson.databind.ObjectMapper;
+import com.fasterxml.jackson.databind.node.ArrayNode;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Displays the source, multicast group flows entries.
+ */
+@Command(scope = "onos", name = "mcast-show", description = "Displays the source, multicast group flows")
+public class McastShowCommand extends AbstractShellCommand {
+
+    private final Logger log = getLogger(getClass());
+
+    @Override
+    protected void execute() {
+        McastRouteTable mrt = McastRouteTable.getInstance();
+        if (outputJson()) {
+            print("%s", json(mrt));
+        } else {
+            printMrib4(mrt);
+        }
+    }
+
+    public JsonNode json(McastRouteTable mrt) {
+        ObjectMapper mapper = new ObjectMapper();
+        ArrayNode result = mapper.createArrayNode();
+        Map<IpPrefix, McastRouteGroup> mrib4 = mrt.getMrib4();
+        for (McastRouteGroup mg : mrib4.values()) {
+            String sAddr = "";
+            String gAddr = "";
+            String inPort = "";
+            String outPorts = "";
+            if (mg.getSaddr() != null) {
+                sAddr = mg.getSaddr().toString();
+                log.info("Multicast Source: " + sAddr);
+            }
+            if (mg.getGaddr() != null) {
+                gAddr = mg.getGaddr().toString();
+                log.info("Multicast Group: " + gAddr);
+            }
+            if (mg.getIngressPoint() != null) {
+                inPort = mg.getIngressPoint().toString();
+                log.info("Multicast Ingress: " + inPort);
+            }
+            Set<ConnectPoint> eps = mg.getEgressPoints();
+            if (eps != null && !eps.isEmpty()) {
+                outPorts = eps.toString();
+            }
+            result.add(mapper.createObjectNode()
+                                    .put("src", sAddr)
+                                    .put("grp", gAddr)
+                                    .put("inPort", inPort)
+                                    .put("outPorts", outPorts));
+        }
+        return result;
+    }
+
+    /**
+     * Displays multicast route table entries.
+     *
+     * @param mrt route table
+     */
+    protected void printMrib4(McastRouteTable mrt) {
+        print(mrt.printMcastRouteTable());
+    }
+}