Add test application for node/mastership based remote Java proxies

Change-Id: I90a7d03016d331f07c7f05ba355514c46a5e4b4f
diff --git a/apps/test/proxy/src/main/java/org/onosproject/proxytest/ProxyTestCommand.java b/apps/test/proxy/src/main/java/org/onosproject/proxytest/ProxyTestCommand.java
new file mode 100644
index 0000000..1cb64e8
--- /dev/null
+++ b/apps/test/proxy/src/main/java/org/onosproject/proxytest/ProxyTestCommand.java
@@ -0,0 +1,92 @@
+/*
+ * 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.proxytest;
+
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.TimeoutException;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.cluster.NodeId;
+import org.onosproject.net.DeviceId;
+
+/**
+ * Proxy test command.
+ */
+@Command(scope = "onos", name = "proxy-test", description = "Manipulate a distributed proxy")
+public class ProxyTestCommand extends AbstractShellCommand {
+
+    @Argument(
+        index = 0,
+        name = "operation",
+        description = "Operation name",
+        required = true,
+        multiValued = false)
+    String operation;
+
+    @Argument(
+        index = 1,
+        name = "type",
+        description = "Operation type, either \"node\" or \"master\"",
+        required = true,
+        multiValued = false)
+    String type;
+
+    @Argument(
+        index = 2,
+        name = "arg1",
+        description = "Operation argument, either a device or node identifier",
+        required = true,
+        multiValued = false)
+    String arg1;
+
+    @Argument(
+        index = 3,
+        name = "arg2",
+        description = "Operation argument",
+        required = true,
+        multiValued = false)
+    String arg2;
+
+    @Override
+    protected void execute() {
+        ProxyTest proxyTest = get(ProxyTest.class);
+        TestProxy proxy;
+        if ("node".equals(type)) {
+            NodeId nodeId = NodeId.nodeId(arg1);
+            proxy = proxyTest.getProxyFor(nodeId);
+        } else if ("master".equals(type)) {
+            DeviceId deviceId = DeviceId.deviceId(arg1);
+            proxy = proxyTest.getProxyFor(deviceId);
+        } else {
+            throw new IllegalArgumentException("Unknown operation type " + type);
+        }
+
+        if ("sync".equals(operation)) {
+            print("%s", proxy.testSync(arg2));
+        } else if ("async".equals(operation)) {
+            try {
+                print("%s", proxy.testAsync(arg2).get(10, TimeUnit.SECONDS));
+            } catch (InterruptedException | ExecutionException | TimeoutException e) {
+                throw new IllegalStateException(e);
+            }
+        } else {
+            throw new IllegalArgumentException("Unknown operation " + operation);
+        }
+    }
+}