Add CLIs for listing, adding and removing telemetry vflow rules

Change-Id: I58c4ee0ed07341662ee8c876b579844daa0cef78
diff --git a/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/cli/TelemetryVflowAddCommand.java b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/cli/TelemetryVflowAddCommand.java
new file mode 100644
index 0000000..70a0af1
--- /dev/null
+++ b/apps/openstacktelemetry/app/src/main/java/org/onosproject/openstacktelemetry/cli/TelemetryVflowAddCommand.java
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2019-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.openstacktelemetry.cli;
+
+import org.apache.karaf.shell.api.action.Argument;
+import org.apache.karaf.shell.api.action.Command;
+import org.apache.karaf.shell.api.action.lifecycle.Service;
+import org.onlab.packet.IpPrefix;
+import org.onlab.packet.TpPort;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.openstacktelemetry.api.DefaultStatsFlowRule;
+import org.onosproject.openstacktelemetry.api.StatsFlowRule;
+import org.onosproject.openstacktelemetry.api.StatsFlowRuleAdminService;
+
+import static org.onosproject.openstacktelemetry.util.OpenstackTelemetryUtil.getProtocolTypeFromString;
+
+/**
+ * Adds vFlow telemetry rule.
+ */
+@Service
+@Command(scope = "onos", name = "telemetry-add-vflow",
+        description = "Adds a telemetry virtual flow rule")
+public class TelemetryVflowAddCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "Source IP", description = "Source IP address",
+            required = true, multiValued = false)
+    private String srcIp = null;
+
+    @Argument(index = 1, name = "Source port", description = "Source port number",
+            required = true, multiValued = false)
+    private String srcTpPort = null;
+
+    @Argument(index = 2, name = "Destination IP", description = "Destination IP address",
+            required = true, multiValued = false)
+    private String dstIp = null;
+
+    @Argument(index = 3, name = "Destination port", description = "Destination port number",
+            required = true, multiValued = false)
+    private String dstTpPort = null;
+
+    @Argument(index = 4, name = "IP protocol", description = "IP protocol (TCP/UDP/ANY)",
+            required = true, multiValued = false)
+    private String ipProto = null;
+
+    @Override
+    protected void doExecute() {
+        StatsFlowRuleAdminService statsService = get(StatsFlowRuleAdminService.class);
+
+        StatsFlowRule statsFlowRule = DefaultStatsFlowRule.builder()
+                .srcIpPrefix(IpPrefix.valueOf(srcIp))
+                .dstIpPrefix(IpPrefix.valueOf(dstIp))
+                .srcTpPort(TpPort.tpPort(Integer.valueOf(srcTpPort)))
+                .dstTpPort(TpPort.tpPort(Integer.valueOf(dstTpPort)))
+                .ipProtocol(getProtocolTypeFromString(ipProto))
+                .build();
+
+        statsService.createStatFlowRule(statsFlowRule);
+
+        print("Added the stat flow rule.");
+    }
+}