ONOS- 2946 Adding ability to view existing packet intercept requests and packet processors.

Change-Id: Id0d82fb4a19506ec607a71856dbf0c33c8e51baf
diff --git a/cli/src/main/java/org/onosproject/cli/net/PacketProcessorsListCommand.java b/cli/src/main/java/org/onosproject/cli/net/PacketProcessorsListCommand.java
new file mode 100644
index 0000000..ff66b80
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/PacketProcessorsListCommand.java
@@ -0,0 +1,59 @@
+/*
+ * Copyright 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.cli.net;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.packet.PacketProcessor;
+import org.onosproject.net.packet.PacketService;
+
+import static org.onosproject.net.packet.PacketProcessor.ADVISOR_MAX;
+import static org.onosproject.net.packet.PacketProcessor.DIRECTOR_MAX;
+
+/**
+ * Lists packet processors.
+ */
+@Command(scope = "onos", name = "packet-processors",
+        description = "Lists packet processors")
+public class PacketProcessorsListCommand extends AbstractShellCommand {
+
+    private static final String FMT = "priority=%s, class=%s";
+
+    @Override
+    protected void execute() {
+        PacketService service = get(PacketService.class);
+        if (outputJson()) {
+            // TODO: implement this
+            print("Not implemented.");
+        } else {
+            service.getProcessors().forEach(this::print);
+        }
+    }
+
+    private void print(int priority, PacketProcessor processor) {
+        print(FMT, priorityFormat(priority), processor.getClass().getName());
+    }
+
+    private String priorityFormat(int priority) {
+        if (priority > DIRECTOR_MAX) {
+            return "observer(" + (priority - DIRECTOR_MAX - 1) + ")";
+        } else if (priority > ADVISOR_MAX) {
+            return "director(" + (priority - ADVISOR_MAX - 1) + ")";
+        }
+        return "advisor(" + (priority - 1) + ")";
+    }
+
+}
diff --git a/cli/src/main/java/org/onosproject/cli/net/PacketRequestsListCommand.java b/cli/src/main/java/org/onosproject/cli/net/PacketRequestsListCommand.java
new file mode 100644
index 0000000..9bdeadb
--- /dev/null
+++ b/cli/src/main/java/org/onosproject/cli/net/PacketRequestsListCommand.java
@@ -0,0 +1,47 @@
+/*
+ * Copyright 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.cli.net;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.packet.PacketRequest;
+import org.onosproject.net.packet.PacketService;
+
+/**
+ * Lists packet requests.
+ */
+@Command(scope = "onos", name = "packet-requests",
+        description = "Lists packet requests")
+public class PacketRequestsListCommand extends AbstractShellCommand {
+
+    private static final String FMT = "priority=%s, appId=%s, criteria=%s";
+
+    @Override
+    protected void execute() {
+        PacketService service = get(PacketService.class);
+        if (outputJson()) {
+            // TODO: implement this
+            print("Not implemented.");
+        } else {
+            service.getRequests().forEach(this::print);
+        }
+    }
+
+    private void print(PacketRequest request) {
+        print(FMT, request.priority(), request.appId().name(), request.selector().criteria());
+    }
+
+}
diff --git a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
index 9958849..459ffa9 100644
--- a/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
+++ b/cli/src/main/resources/OSGI-INF/blueprint/shell-config.xml
@@ -351,6 +351,13 @@
         </command>
 
         <command>
+            <action class="org.onosproject.cli.net.PacketRequestsListCommand"/>
+        </command>
+        <command>
+            <action class="org.onosproject.cli.net.PacketProcessorsListCommand"/>
+        </command>
+
+        <command>
             <action class="org.onosproject.cli.net.AddTestFlowsCommand"/>
         </command>
         <command>