com.amazonaws.services.cloudwatch.model.DeleteAlarmsRequest Java Examples

public static void main(String[] args) {

        final String USAGE =
            "To run this example, supply an alarm name\n" +
            "Ex: DeleteAlarm <alarm-name>\n";

        if (args.length != 1) {
            System.out.println(USAGE);
            System.exit(1);
        }

        String alarm_name = args[0];

        final AmazonCloudWatch cw =
            AmazonCloudWatchClientBuilder.defaultClient();

        DeleteAlarmsRequest request = new DeleteAlarmsRequest()
            .withAlarmNames(alarm_name);

        DeleteAlarmsResult response = cw.deleteAlarms(request);

        System.out.printf("Successfully deleted alarm %s", alarm_name);
    }
 

@Override
public Completable deleteAlarm(String policyRefId, String jobId) {
    DeleteAlarmsRequest deleteAlarmsRequest = new DeleteAlarmsRequest();
    deleteAlarmsRequest.setAlarmNames(Arrays.asList(buildCloudWatchName(policyRefId, jobId)));


    return wrapWithExponentialRetry(String.format("deleteAlarm in policy %s for job %s", policyRefId, jobId),
            Observable.create(emitter ->
                    awsCloudWatch.deleteAlarmsAsync(deleteAlarmsRequest, new AsyncHandler<DeleteAlarmsRequest, DeleteAlarmsResult>() {
                        @Override
                        public void onError(Exception exception) {
                            deleteErrorCounter.increment();
                            if (exception instanceof ResourceNotFoundException) {
                                emitter.onError(AutoScalePolicyException.unknownScalingPolicy(policyRefId, exception.getMessage()));
                            } else {
                                emitter.onError(AutoScalePolicyException.errorDeletingAlarm(policyRefId, exception.getMessage()));
                            }
                        }

                        @Override
                        public void onSuccess(DeleteAlarmsRequest request, DeleteAlarmsResult deleteAlarmsResult) {
                            int httpStatusCode = deleteAlarmsResult.getSdkHttpMetadata().getHttpStatusCode();
                            log.info("Deleted cloud watch alarm for job-id {}, status {}", jobId, httpStatusCode);
                            deleteAlarmCounter.increment();
                            emitter.onCompleted();
                        }
                    }), Emitter.BackpressureMode.NONE)).toCompletable();
}
 

private void deleteCloudWatchAlarms(String regionName, AwsCredentialView credentialView, List<String> alarmNames) {
    try {
        DeleteAlarmsRequest deleteAlarmsRequest = new DeleteAlarmsRequest().withAlarmNames(alarmNames);
        AmazonCloudWatchClient amazonCloudWatchClient = awsClient.createCloudWatchClient(credentialView, regionName);
        amazonCloudWatchClient.deleteAlarms(deleteAlarmsRequest);
        LOGGER.debug("Deleted cloudwatch alarms [{}]", alarmNames);
    } catch (AmazonCloudWatchException acwe) {
        LOGGER.error("Unable to delete cloudwatch alarms [{}]: {}", alarmNames, acwe.getLocalizedMessage());
        throw new CloudConnectorException("unable to delete cloud watch alarms", acwe);
    }
}
 

@Override
public DeleteAlarmsResult deleteAlarms(DeleteAlarmsRequest deleteAlarmsRequest) {
    return null;
}
 

@Test
void testDeleteCloudWatchAlarmsForSystemFailuresWhenOneAlarmHasAlreadyBeenDeleted() {
    String alarm1Name = "i-1-Status-Check-Failed-System";
    String alarm2Name = "i-2-Status-Check-Failed-System";
    String alarm3Name = "i-3-Status-Check-Failed-System";
    String instanceId1 = "i-1";
    String instanceId2 = "i-2";
    String instanceId3 = "i-3";
    MetricAlarm alarm1 = mock(MetricAlarm.class);
    MetricAlarm alarm2 = mock(MetricAlarm.class);
    DescribeAlarmsResult describeAlarmsResult = mock(DescribeAlarmsResult.class);
    AmazonCloudWatchClient cloudWatchClient = mock(AmazonCloudWatchClient.class);
    AwsCredentialView credentialView = mock(AwsCredentialView.class);
    CloudStack stack = mock(CloudStack.class);
    Group group = mock(Group.class);
    CloudInstance instance1 = mock(CloudInstance.class);
    CloudInstance instance2 = mock(CloudInstance.class);
    CloudInstance instance3 = mock(CloudInstance.class);
    List<Group> groups = List.of(group);
    when(stack.getParameters()).thenReturn(PARAMETERS);
    when(stack.getGroups()).thenReturn(groups);
    when(group.getInstances()).thenReturn(List.of(instance1, instance2, instance3));
    when(instance1.getInstanceId()).thenReturn(instanceId1);
    when(instance2.getInstanceId()).thenReturn(instanceId2);
    when(instance3.getInstanceId()).thenReturn(instanceId3);
    when(awsClient.createCloudWatchClient(eq(credentialView), eq(REGION))).thenReturn(cloudWatchClient);
    when(cloudWatchClient.describeAlarms(any())).thenReturn(describeAlarmsResult);
    // alarm 3 was already deleted
    when(describeAlarmsResult.getMetricAlarms()).thenReturn(List.of(alarm1, alarm2));
    when(alarm1.getAlarmName()).thenReturn(alarm1Name);
    when(alarm2.getAlarmName()).thenReturn(alarm2Name);

    underTest.deleteCloudWatchAlarmsForSystemFailures(stack, REGION, credentialView);

    ArgumentCaptor<DescribeAlarmsRequest> captorDescribe = ArgumentCaptor.forClass(DescribeAlarmsRequest.class);
    ArgumentCaptor<DeleteAlarmsRequest> captorDelete = ArgumentCaptor.forClass(DeleteAlarmsRequest.class);
    verify(cloudWatchClient, times(1)).describeAlarms(captorDescribe.capture());
    verify(cloudWatchClient, times(1)).deleteAlarms(captorDelete.capture());
    assertEquals(List.of(alarm1Name, alarm2Name, alarm3Name), captorDescribe.getValue().getAlarmNames());

    // only delete alarms that were not already deleted
    assertEquals(List.of(alarm1Name, alarm2Name), captorDelete.getValue().getAlarmNames());
}