XOS integration app

Change-Id: I2fc1cd5bec032ad027cbb685d8f03df732717fcc
diff --git a/apps/xos-integration/src/main/java/org/onosproject/xosintegration/cli/VoltTenantsListCommand.java b/apps/xos-integration/src/main/java/org/onosproject/xosintegration/cli/VoltTenantsListCommand.java
new file mode 100644
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--- /dev/null
+++ b/apps/xos-integration/src/main/java/org/onosproject/xosintegration/cli/VoltTenantsListCommand.java
@@ -0,0 +1,61 @@
+/*
+ * 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.xosintegration.cli;
+
+import java.util.Set;
+
+import org.apache.karaf.shell.commands.Argument;
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.xosintegration.VoltTenant;
+import org.onosproject.xosintegration.VoltTenantService;
+
+/**
+ * CLI command for listing VOLT tenant objects.
+ */
+
+/**
+ * CLI command to list the existing tenants.
+ */
+@Command(scope = "onos", name = "tenants",
+        description = "Lists the inventory of VOLT tenants and their contents")
+public class VoltTenantsListCommand extends AbstractShellCommand {
+
+    @Argument(index = 0, name = "tenantId",
+            description = "Tenant ID",
+            required = false, multiValued = false)
+    private String tenantId = null;
+
+    @Override
+    protected void execute() {
+        VoltTenantService service = get(VoltTenantService.class);
+
+        if (tenantId != null) {
+            VoltTenant tenant = service.getTenant(Long.parseLong(tenantId));
+            if (tenant != null) {
+                print(tenant.toString());
+            } else {
+                error("Tenant not found {}", tenantId);
+            }
+        } else {
+            Set<VoltTenant> tenants = service.getAllTenants();
+            for (VoltTenant tenant : tenants) {
+                print(tenant.toString());
+            }
+        }
+    }
+
+}