/*
 * Copyright 2014-2015 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.Argument;
import org.apache.karaf.shell.commands.Command;
import org.onosproject.net.Device;
import org.onosproject.net.Host;
import org.onosproject.net.Link;
import org.onosproject.net.device.DeviceAdminService;
import org.onosproject.net.host.HostAdminService;
import org.onosproject.net.intent.Intent;
import org.onosproject.net.intent.IntentService;
import org.onosproject.net.intent.IntentState;
import org.onosproject.net.link.LinkAdminService;

/**
 * Wipes-out the entire network information base, i.e. devices, links, hosts, intents.
 */
@Command(scope = "onos", name = "wipe-out",
        description = "Wipes-out the entire network information base, i.e. devices, links, hosts")
public class WipeOutCommand extends ClustersListCommand {

    private static final String PLEASE = "please";

    @Argument(index = 0, name = "please", description = "Confirmation phrase",
            required = false, multiValued = false)
    String please = null;

    @Override
    protected void execute() {
        if (please == null || !please.equals(PLEASE)) {
            print("I'm afraid I can't do that!\nSay: %s", PLEASE);
            return;
        }

        print("Wiping devices");
        DeviceAdminService deviceAdminService = get(DeviceAdminService.class);
        while (deviceAdminService.getDeviceCount() > 0) {
            try {
                for (Device device : deviceAdminService.getDevices()) {
                    deviceAdminService.removeDevice(device.id());
                }
            } catch (Exception e) {
                log.warn("Unable to wipe-out devices", e);
            }
        }

        print("Wiping links");
        LinkAdminService linkAdminService = get(LinkAdminService.class);
        while (linkAdminService.getLinkCount() > 0) {
            try {
                for (Link link : linkAdminService.getLinks()) {
                    linkAdminService.removeLinks(link.src());
                    linkAdminService.removeLinks(link.dst());
                }
            } catch (Exception e) {
                log.warn("Unable to wipe-out links", e);
            }
        }

        print("Wiping hosts");
        HostAdminService hostAdminService = get(HostAdminService.class);
        while (hostAdminService.getHostCount() > 0) {
            try {
                for (Host host : hostAdminService.getHosts()) {
                    hostAdminService.removeHost(host.id());
                }
            } catch (Exception e) {
                log.warn("Unable to wipe-out hosts", e);
            }
        }

        print("Wiping intents");
        IntentService intentService = get(IntentService.class);
        for (Intent intent : intentService.getIntents()) {
            if (intentService.getIntentState(intent.key()) != IntentState.WITHDRAWN) {
                intentService.withdraw(intent);
            }
            intentService.purge(intent);
        }
    }
}

@@ -1830,32 +1830,1050 @@
 urn;%0A        %7D%0A%0A
+        wipeOutIntents();%0A        wipeOutHosts();%0A        wipeOutDevices();%0A        wipeOutLinks();%0A    %7D%0A%0A    private void wipeOutIntents() %7B%0A        print(%22Wiping intents%22);%0A        IntentService intentService = get(IntentService.class);%0A        for (Intent intent : intentService.getIntents()) %7B%0A            if (intentService.getIntentState(intent.key()) != IntentState.WITHDRAWN) %7B%0A                intentService.withdraw(intent);%0A            %7D%0A            intentService.purge(intent);%0A        %7D%0A    %7D%0A%0A    private void wipeOutHosts() %7B%0A        print(%22Wiping hosts%22);%0A        HostAdminService hostAdminService = get(HostAdminService.class);%0A        while (hostAdminService.getHostCount() %3E 0) %7B%0A            try %7B%0A                for (Host host : hostAdminService.getHosts()) %7B%0A                    hostAdminService.removeHost(host.id());%0A                %7D%0A            %7D catch (Exception e) %7B%0A                log.warn(%22Unable to wipe-out hosts%22, e);%0A            %7D%0A        %7D%0A    %7D%0A%0A    private void wipeOutDevices() %7B%0A
         print(%22W
@@ -3311,32 +3311,72 @@
     %7D%0A        %7D%0A
+    %7D%0A%0A    private void wipeOutLinks() %7B
 %0A        print(%22
@@ -3862,801 +3862,8 @@
    %7D
-%0A%0A        print(%22Wiping hosts%22);%0A        HostAdminService hostAdminService = get(HostAdminService.class);%0A        while (hostAdminService.getHostCount() %3E 0) %7B%0A            try %7B%0A                for (Host host : hostAdminService.getHosts()) %7B%0A                    hostAdminService.removeHost(host.id());%0A                %7D%0A            %7D catch (Exception e) %7B%0A                log.warn(%22Unable to wipe-out hosts%22, e);%0A            %7D%0A        %7D%0A%0A        print(%22Wiping intents%22);%0A        IntentService intentService = get(IntentService.class);%0A        for (Intent intent : intentService.getIntents()) %7B%0A            if (intentService.getIntentState(intent.key()) != IntentState.WITHDRAWN) %7B%0A                intentService.withdraw(intent);%0A            %7D%0A            intentService.purge(intent);%0A        %7D
 %0A   

Refactored the wipe-out command code a bit.