//snippet-sourcedescription:[DescribeAlarms.java demonstrates how to get information about CloudWatch alarms.]
//snippet-keyword:[SDK for Java 2.0]
//snippet-keyword:[Code Sample]
//snippet-service:[cloudwatch]
//snippet-sourcetype:[full-example]
//snippet-sourcedate:[13/02/2020]
//snippet-sourceauthor:[scmacdon]

/*
 * Copyright 2010-2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License").
 * You may not use this file except in compliance with the License.
 * A copy of the License is located at
 *
 *  http://aws.amazon.com/apache2.0
 *
 * or in the "license" file accompanying this file. This file 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 com.example.cloudwatch;
// snippet-start:[cloudwatch.java2.describe_alarms.complete]
// snippet-start:[cloudwatch.java2.describe_alarms.import]
import software.amazon.awssdk.services.cloudwatch.CloudWatchClient;
import software.amazon.awssdk.services.cloudwatch.model.CloudWatchException;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsRequest;
import software.amazon.awssdk.services.cloudwatch.model.DescribeAlarmsResponse;
import software.amazon.awssdk.services.cloudwatch.model.MetricAlarm;
// snippet-end:[cloudwatch.java2.describe_alarms.import]

/**
 * Lists all CloudWatch alarms
 */
public class DescribeAlarms {

    public static void main(String[] args) {

        // snippet-start:[cloudwatch.java2.describe_alarms.main]
        CloudWatchClient cw = CloudWatchClient.builder().build();

        try {

            boolean done = false;
            String newToken = null;

            while(!done) {
                DescribeAlarmsResponse response;

                if (newToken == null) {
                    DescribeAlarmsRequest request = DescribeAlarmsRequest.builder().build();
                    response = cw.describeAlarms(request);
                } else {
                    DescribeAlarmsRequest request = DescribeAlarmsRequest.builder()
                        .nextToken(newToken)
                        .build();
                 response = cw.describeAlarms(request);
                }

                for(MetricAlarm alarm : response.metricAlarms()) {
                    System.out.printf("\n Retrieved alarm %s", alarm.alarmName());
                }

                if(response.nextToken() == null) {
                    done = true;
                } else {
                    newToken = response.nextToken();
                }
            }

        } catch (CloudWatchException e) {
            System.err.println(e.awsErrorDetails().errorMessage());
            System.exit(1);
        }
        System.out.printf("Done");
        // snippet-end:[cloudwatch.java2.describe_alarms.main]
    }
}
// snippet-end:[cloudwatch.java2.describe_alarms.complete]

@@ -267,17 +267,17 @@
 cedate:%5B
-1
+0
 3/02/202

Update DescribeAlarms.java