/*-
 * ============LICENSE_START=======================================================
 * 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.
 * ============LICENSE_END=========================================================
 */

package com.woorea.openstack.examples.compute;

import com.woorea.openstack.examples.ExamplesConfiguration;
import com.woorea.openstack.keystone.Keystone;
import com.woorea.openstack.keystone.model.Access;
import com.woorea.openstack.keystone.model.authentication.UsernamePassword;
import com.woorea.openstack.nova.Nova;
import com.woorea.openstack.nova.api.ServersResource;
import com.woorea.openstack.nova.model.Servers;

public class NovaStopStartServer {
	public static void main(String[] args) throws InterruptedException {
		Keystone keystone = new Keystone(ExamplesConfiguration.KEYSTONE_AUTH_URL);
		Access access = keystone.tokens().authenticate(new UsernamePassword(ExamplesConfiguration.KEYSTONE_USERNAME, ExamplesConfiguration.KEYSTONE_PASSWORD))
				.withTenantName(ExamplesConfiguration.TENANT_NAME)
				.execute();

		//use the token in the following requests
		keystone.token(access.getToken().getId());

		Nova novaClient = new Nova(ExamplesConfiguration.NOVA_ENDPOINT.concat("/").concat(access.getToken().getTenant().getId()));
		novaClient.token(access.getToken().getId());

		Servers servers = novaClient.servers().list(true).execute();
		if(servers.getList().size() > 0) {

			// Server has to be in activated state.
			ServersResource.StopServer stopServer = novaClient.servers().stop(servers.getList().get(0).getId());
			stopServer.endpoint(ExamplesConfiguration.NOVA_ENDPOINT);
			stopServer.execute();

			// Wait until server shutdown. Or 400 error occurs.
			Thread.sleep(5000);

			ServersResource.StartServer startServer = novaClient.servers().start(servers.getList().get(0).getId());
			startServer.endpoint(ExamplesConfiguration.NOVA_ENDPOINT);
			startServer.execute();
		}
	}
}