AAA CLI commands rewritten.

- Added AaaAuthState enum and AaaSession DTO to api.
- Reset Device command (WIP).
- Show Users command in terms of new classes.

Change-Id: Ia3d90ed48344c1c780dda4e376ac3758c2db71b7
diff --git a/src/main/java/org/opencord/aaa/cli/AaaShowUsersCommand.java b/src/main/java/org/opencord/aaa/cli/AaaShowUsersCommand.java
new file mode 100644
index 0000000..276c316
--- /dev/null
+++ b/src/main/java/org/opencord/aaa/cli/AaaShowUsersCommand.java
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2017-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.opencord.aaa.cli;
+
+import org.apache.karaf.shell.commands.Command;
+import org.onosproject.cli.AbstractShellCommand;
+import org.onosproject.net.AnnotationKeys;
+import org.onosproject.net.ConnectPoint;
+import org.onosproject.net.Port;
+import org.onosproject.net.device.DeviceService;
+import org.opencord.aaa.api.AaaService;
+import org.opencord.aaa.api.AaaSession;
+import org.opencord.sadis.SubscriberAndDeviceInformation;
+import org.opencord.sadis.SubscriberAndDeviceInformationService;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Shows the users in the aaa.
+ */
+@Command(scope = "onos", name = "aaa-users",
+        description = "Displays the users with current AAA sessions")
+public class AaaShowUsersCommand extends AbstractShellCommand {
+
+    private static final String UNKNOWN = "UNKNOWN";
+
+    @Override
+    protected void execute() {
+        DeviceService devService = get(DeviceService.class);
+        SubscriberAndDeviceInformationService subsService =
+                get(SubscriberAndDeviceInformationService.class);
+        AaaService aaaService = get(AaaService.class);
+
+// TODO: add currentSessions() to AaaService API
+//        List<AaaSession> sessionList = aaaService.currentSessions();
+        List<AaaSession> sessionList = new ArrayList<>();
+
+        for (AaaSession s : sessionList) {
+            String subsId = getSubscriberId(devService, subsService, s.getConnectPoint());
+            print("UserName=%s,CurrentState=%s,DeviceId=%s,MAC=%s,PortNumber=%s,SubscriberId=%s",
+                  s.username(), s.state(), s.deviceId(), s.macAddress(), s.portNumber(), subsId);
+        }
+    }
+
+    private String getSubscriberId(DeviceService devService,
+                                   SubscriberAndDeviceInformationService sadis,
+                                   ConnectPoint cp) {
+        Port p = devService.getPort(cp);
+        String nasPortId = p.annotations().value(AnnotationKeys.PORT_NAME);
+        SubscriberAndDeviceInformation subscriber = sadis.get(nasPortId);
+        return (subscriber == null) ? UNKNOWN : subscriber.nasPortId();
+    }
+}