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The AWS Java SDK for Amazon CloudWatch module holds the client classes that are used for communicating with Amazon CloudWatch Service

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/*
 * Copyright 2014-2019 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.amazonaws.services.cloudwatch;

import javax.annotation.Generated;

import com.amazonaws.*;
import com.amazonaws.regions.*;

import com.amazonaws.services.cloudwatch.model.*;
import com.amazonaws.services.cloudwatch.waiters.AmazonCloudWatchWaiters;

/**
 * Interface for accessing CloudWatch.
 * 

* Note: Do not directly implement this interface, new methods are added to it regularly. Extend from * {@link com.amazonaws.services.cloudwatch.AbstractAmazonCloudWatch} instead. *

*

*

* Amazon CloudWatch monitors your Amazon Web Services (AWS) resources and the applications you run on AWS in real time. * You can use CloudWatch to collect and track metrics, which are the variables you want to measure for your resources * and applications. *

*

* CloudWatch alarms send notifications or automatically change the resources you are monitoring based on rules that you * define. For example, you can monitor the CPU usage and disk reads and writes of your Amazon EC2 instances. Then, use * this data to determine whether you should launch additional instances to handle increased load. You can also use this * data to stop under-used instances to save money. *

*

* In addition to monitoring the built-in metrics that come with AWS, you can monitor your own custom metrics. With * CloudWatch, you gain system-wide visibility into resource utilization, application performance, and operational * health. *

*/ @Generated("com.amazonaws:aws-java-sdk-code-generator") public interface AmazonCloudWatch { /** * The region metadata service name for computing region endpoints. You can use this value to retrieve metadata * (such as supported regions) of the service. * * @see RegionUtils#getRegionsForService(String) */ String ENDPOINT_PREFIX = "monitoring"; /** * Overrides the default endpoint for this client ("https://monitoring.us-east-1.amazonaws.com"). Callers can use * this method to control which AWS region they want to work with. *

* Callers can pass in just the endpoint (ex: "monitoring.us-east-1.amazonaws.com") or a full URL, including the * protocol (ex: "https://monitoring.us-east-1.amazonaws.com"). If the protocol is not specified here, the default * protocol from this client's {@link ClientConfiguration} will be used, which by default is HTTPS. *

* For more information on using AWS regions with the AWS SDK for Java, and a complete list of all available * endpoints for all AWS services, see: https://docs.aws.amazon.com/sdk-for-java/v1/developer-guide/java-dg-region-selection.html#region-selection- * choose-endpoint *

* This method is not threadsafe. An endpoint should be configured when the client is created and before any * service requests are made. Changing it afterwards creates inevitable race conditions for any service requests in * transit or retrying. * * @param endpoint * The endpoint (ex: "monitoring.us-east-1.amazonaws.com") or a full URL, including the protocol (ex: * "https://monitoring.us-east-1.amazonaws.com") of the region specific AWS endpoint this client will * communicate with. * @deprecated use {@link AwsClientBuilder#setEndpointConfiguration(AwsClientBuilder.EndpointConfiguration)} for * example: * {@code builder.setEndpointConfiguration(new EndpointConfiguration(endpoint, signingRegion));} */ @Deprecated void setEndpoint(String endpoint); /** * An alternative to {@link AmazonCloudWatch#setEndpoint(String)}, sets the regional endpoint for this client's * service calls. Callers can use this method to control which AWS region they want to work with. *

* By default, all service endpoints in all regions use the https protocol. To use http instead, specify it in the * {@link ClientConfiguration} supplied at construction. *

* This method is not threadsafe. A region should be configured when the client is created and before any service * requests are made. Changing it afterwards creates inevitable race conditions for any service requests in transit * or retrying. * * @param region * The region this client will communicate with. See {@link Region#getRegion(com.amazonaws.regions.Regions)} * for accessing a given region. Must not be null and must be a region where the service is available. * * @see Region#getRegion(com.amazonaws.regions.Regions) * @see Region#createClient(Class, com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration) * @see Region#isServiceSupported(String) * @deprecated use {@link AwsClientBuilder#setRegion(String)} */ @Deprecated void setRegion(Region region); /** *

* Deletes the specified alarms. In the event of an error, no alarms are deleted. *

* * @param deleteAlarmsRequest * @return Result of the DeleteAlarms operation returned by the service. * @throws ResourceNotFoundException * The named resource does not exist. * @sample AmazonCloudWatch.DeleteAlarms * @see AWS API * Documentation */ DeleteAlarmsResult deleteAlarms(DeleteAlarmsRequest deleteAlarmsRequest); /** *

* Deletes all dashboards that you specify. You may specify up to 100 dashboards to delete. If there is an error * during this call, no dashboards are deleted. *

* * @param deleteDashboardsRequest * @return Result of the DeleteDashboards operation returned by the service. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @throws DashboardNotFoundErrorException * The specified dashboard does not exist. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.DeleteDashboards * @see AWS * API Documentation */ DeleteDashboardsResult deleteDashboards(DeleteDashboardsRequest deleteDashboardsRequest); /** *

* Retrieves the history for the specified alarm. You can filter the results by date range or item type. If an alarm * name is not specified, the histories for all alarms are returned. *

*

* CloudWatch retains the history of an alarm even if you delete the alarm. *

* * @param describeAlarmHistoryRequest * @return Result of the DescribeAlarmHistory operation returned by the service. * @throws InvalidNextTokenException * The next token specified is invalid. * @sample AmazonCloudWatch.DescribeAlarmHistory * @see AWS API Documentation */ DescribeAlarmHistoryResult describeAlarmHistory(DescribeAlarmHistoryRequest describeAlarmHistoryRequest); /** * Simplified method form for invoking the DescribeAlarmHistory operation. * * @see #describeAlarmHistory(DescribeAlarmHistoryRequest) */ DescribeAlarmHistoryResult describeAlarmHistory(); /** *

* Retrieves the specified alarms. If no alarms are specified, all alarms are returned. Alarms can be retrieved by * using only a prefix for the alarm name, the alarm state, or a prefix for any action. *

* * @param describeAlarmsRequest * @return Result of the DescribeAlarms operation returned by the service. * @throws InvalidNextTokenException * The next token specified is invalid. * @sample AmazonCloudWatch.DescribeAlarms * @see AWS API * Documentation */ DescribeAlarmsResult describeAlarms(DescribeAlarmsRequest describeAlarmsRequest); /** * Simplified method form for invoking the DescribeAlarms operation. * * @see #describeAlarms(DescribeAlarmsRequest) */ DescribeAlarmsResult describeAlarms(); /** *

* Retrieves the alarms for the specified metric. To filter the results, specify a statistic, period, or unit. *

* * @param describeAlarmsForMetricRequest * @return Result of the DescribeAlarmsForMetric operation returned by the service. * @sample AmazonCloudWatch.DescribeAlarmsForMetric * @see AWS API Documentation */ DescribeAlarmsForMetricResult describeAlarmsForMetric(DescribeAlarmsForMetricRequest describeAlarmsForMetricRequest); /** *

* Disables the actions for the specified alarms. When an alarm's actions are disabled, the alarm actions do not * execute when the alarm state changes. *

* * @param disableAlarmActionsRequest * @return Result of the DisableAlarmActions operation returned by the service. * @sample AmazonCloudWatch.DisableAlarmActions * @see AWS * API Documentation */ DisableAlarmActionsResult disableAlarmActions(DisableAlarmActionsRequest disableAlarmActionsRequest); /** *

* Enables the actions for the specified alarms. *

* * @param enableAlarmActionsRequest * @return Result of the EnableAlarmActions operation returned by the service. * @sample AmazonCloudWatch.EnableAlarmActions * @see AWS * API Documentation */ EnableAlarmActionsResult enableAlarmActions(EnableAlarmActionsRequest enableAlarmActionsRequest); /** *

* Displays the details of the dashboard that you specify. *

*

* To copy an existing dashboard, use GetDashboard, and then use the data returned within * DashboardBody as the template for the new dashboard when you call PutDashboard to * create the copy. *

* * @param getDashboardRequest * @return Result of the GetDashboard operation returned by the service. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @throws DashboardNotFoundErrorException * The specified dashboard does not exist. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.GetDashboard * @see AWS API * Documentation */ GetDashboardResult getDashboard(GetDashboardRequest getDashboardRequest); /** *

* You can use the GetMetricData API to retrieve as many as 100 different metrics in a single request, * with a total of as many as 100,800 datapoints. You can also optionally perform math expressions on the values of * the returned statistics, to create new time series that represent new insights into your data. For example, using * Lambda metrics, you could divide the Errors metric by the Invocations metric to get an error rate time series. * For more information about metric math expressions, see Metric Math Syntax and Functions in the Amazon CloudWatch User Guide. *

*

* Calls to the GetMetricData API have a different pricing structure than calls to * GetMetricStatistics. For more information about pricing, see Amazon CloudWatch Pricing. *

*

* Amazon CloudWatch retains metric data as follows: *

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    * Data points with a period of less than 60 seconds are available for 3 hours. These data points are * high-resolution metrics and are available only for custom metrics that have been defined with a * StorageResolution of 1. *

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    * Data points with a period of 60 seconds (1-minute) are available for 15 days. *

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    * Data points with a period of 300 seconds (5-minute) are available for 63 days. *

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    * Data points with a period of 3600 seconds (1 hour) are available for 455 days (15 months). *

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*

* Data points that are initially published with a shorter period are aggregated together for long-term storage. For * example, if you collect data using a period of 1 minute, the data remains available for 15 days with 1-minute * resolution. After 15 days, this data is still available, but is aggregated and retrievable only with a resolution * of 5 minutes. After 63 days, the data is further aggregated and is available with a resolution of 1 hour. *

* * @param getMetricDataRequest * @return Result of the GetMetricData operation returned by the service. * @throws InvalidNextTokenException * The next token specified is invalid. * @sample AmazonCloudWatch.GetMetricData * @see AWS API * Documentation */ GetMetricDataResult getMetricData(GetMetricDataRequest getMetricDataRequest); /** *

* Gets statistics for the specified metric. *

*

* The maximum number of data points returned from a single call is 1,440. If you request more than 1,440 data * points, CloudWatch returns an error. To reduce the number of data points, you can narrow the specified time range * and make multiple requests across adjacent time ranges, or you can increase the specified period. Data points are * not returned in chronological order. *

*

* CloudWatch aggregates data points based on the length of the period that you specify. For example, if you request * statistics with a one-hour period, CloudWatch aggregates all data points with time stamps that fall within each * one-hour period. Therefore, the number of values aggregated by CloudWatch is larger than the number of data * points returned. *

*

* CloudWatch needs raw data points to calculate percentile statistics. If you publish data using a statistic set * instead, you can only retrieve percentile statistics for this data if one of the following conditions is true: *

*
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    * The SampleCount value of the statistic set is 1. *

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    * The Min and the Max values of the statistic set are equal. *

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*

* Percentile statistics are not available for metrics when any of the metric values are negative numbers. *

*

* Amazon CloudWatch retains metric data as follows: *

*
    *
  • *

    * Data points with a period of less than 60 seconds are available for 3 hours. These data points are * high-resolution metrics and are available only for custom metrics that have been defined with a * StorageResolution of 1. *

    *
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    * Data points with a period of 60 seconds (1-minute) are available for 15 days. *

    *
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    * Data points with a period of 300 seconds (5-minute) are available for 63 days. *

    *
  • *
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    * Data points with a period of 3600 seconds (1 hour) are available for 455 days (15 months). *

    *
  • *
*

* Data points that are initially published with a shorter period are aggregated together for long-term storage. For * example, if you collect data using a period of 1 minute, the data remains available for 15 days with 1-minute * resolution. After 15 days, this data is still available, but is aggregated and retrievable only with a resolution * of 5 minutes. After 63 days, the data is further aggregated and is available with a resolution of 1 hour. *

*

* CloudWatch started retaining 5-minute and 1-hour metric data as of July 9, 2016. *

*

* For information about metrics and dimensions supported by AWS services, see the Amazon CloudWatch * Metrics and Dimensions Reference in the Amazon CloudWatch User Guide. *

* * @param getMetricStatisticsRequest * @return Result of the GetMetricStatistics operation returned by the service. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @throws MissingRequiredParameterException * An input parameter that is required is missing. * @throws InvalidParameterCombinationException * Parameters were used together that cannot be used together. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.GetMetricStatistics * @see AWS * API Documentation */ GetMetricStatisticsResult getMetricStatistics(GetMetricStatisticsRequest getMetricStatisticsRequest); /** *

* You can use the GetMetricWidgetImage API to retrieve a snapshot graph of one or more Amazon * CloudWatch metrics as a bitmap image. You can then embed this image into your services and products, such as wiki * pages, reports, and documents. You could also retrieve images regularly, such as every minute, and create your * own custom live dashboard. *

*

* The graph you retrieve can include all CloudWatch metric graph features, including metric math and horizontal and * vertical annotations. *

*

* There is a limit of 20 transactions per second for this API. Each GetMetricWidgetImage action has * the following limits: *

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    * As many as 100 metrics in the graph. *

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    * Up to 100 KB uncompressed payload. *

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* * @param getMetricWidgetImageRequest * @return Result of the GetMetricWidgetImage operation returned by the service. * @sample AmazonCloudWatch.GetMetricWidgetImage * @see AWS API Documentation */ GetMetricWidgetImageResult getMetricWidgetImage(GetMetricWidgetImageRequest getMetricWidgetImageRequest); /** *

* Returns a list of the dashboards for your account. If you include DashboardNamePrefix, only those * dashboards with names starting with the prefix are listed. Otherwise, all dashboards in your account are listed. *

*

* ListDashboards returns up to 1000 results on one page. If there are more than 1000 dashboards, you * can call ListDashboards again and include the value you received for NextToken in the * first call, to receive the next 1000 results. *

* * @param listDashboardsRequest * @return Result of the ListDashboards operation returned by the service. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.ListDashboards * @see AWS API * Documentation */ ListDashboardsResult listDashboards(ListDashboardsRequest listDashboardsRequest); /** *

* List the specified metrics. You can use the returned metrics with GetMetricData or * GetMetricStatistics to obtain statistical data. *

*

* Up to 500 results are returned for any one call. To retrieve additional results, use the returned token with * subsequent calls. *

*

* After you create a metric, allow up to fifteen minutes before the metric appears. Statistics about the metric, * however, are available sooner using GetMetricData or GetMetricStatistics. *

* * @param listMetricsRequest * @return Result of the ListMetrics operation returned by the service. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @sample AmazonCloudWatch.ListMetrics * @see AWS API * Documentation */ ListMetricsResult listMetrics(ListMetricsRequest listMetricsRequest); /** * Simplified method form for invoking the ListMetrics operation. * * @see #listMetrics(ListMetricsRequest) */ ListMetricsResult listMetrics(); /** *

* Creates a dashboard if it does not already exist, or updates an existing dashboard. If you update a dashboard, * the entire contents are replaced with what you specify here. *

*

* There is no limit to the number of dashboards in your account. All dashboards in your account are global, not * region-specific. *

*

* A simple way to create a dashboard using PutDashboard is to copy an existing dashboard. To copy an * existing dashboard using the console, you can load the dashboard and then use the View/edit source command in the * Actions menu to display the JSON block for that dashboard. Another way to copy a dashboard is to use * GetDashboard, and then use the data returned within DashboardBody as the template for * the new dashboard when you call PutDashboard. *

*

* When you create a dashboard with PutDashboard, a good practice is to add a text widget at the top of * the dashboard with a message that the dashboard was created by script and should not be changed in the console. * This message could also point console users to the location of the DashboardBody script or the * CloudFormation template used to create the dashboard. *

* * @param putDashboardRequest * @return Result of the PutDashboard operation returned by the service. * @throws DashboardInvalidInputErrorException * Some part of the dashboard data is invalid. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.PutDashboard * @see AWS API * Documentation */ PutDashboardResult putDashboard(PutDashboardRequest putDashboardRequest); /** *

* Creates or updates an alarm and associates it with the specified metric or metric math expression. *

*

* When this operation creates an alarm, the alarm state is immediately set to INSUFFICIENT_DATA. The * alarm is then evaluated and its state is set appropriately. Any actions associated with the new state are then * executed. *

*

* When you update an existing alarm, its state is left unchanged, but the update completely overwrites the previous * configuration of the alarm. *

*

* If you are an IAM user, you must have Amazon EC2 permissions for some alarm operations: *

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    * iam:CreateServiceLinkedRole for all alarms with EC2 actions *

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    * ec2:DescribeInstanceStatus and ec2:DescribeInstances for all alarms on EC2 instance * status metrics *

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    * ec2:StopInstances for alarms with stop actions *

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    * ec2:TerminateInstances for alarms with terminate actions *

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    * ec2:DescribeInstanceRecoveryAttribute and ec2:RecoverInstances for alarms with recover * actions *

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* If you have read/write permissions for Amazon CloudWatch but not for Amazon EC2, you can still create an alarm, * but the stop or terminate actions are not performed. However, if you are later granted the required permissions, * the alarm actions that you created earlier are performed. *

*

* If you are using an IAM role (for example, an EC2 instance profile), you cannot stop or terminate the instance * using alarm actions. However, you can still see the alarm state and perform any other actions such as Amazon SNS * notifications or Auto Scaling policies. *

*

* If you are using temporary security credentials granted using AWS STS, you cannot stop or terminate an EC2 * instance using alarm actions. *

*

* The first time you create an alarm in the AWS Management Console, the CLI, or by using the PutMetricAlarm API, * CloudWatch creates the necessary service-linked role for you. The service-linked role is called * AWSServiceRoleForCloudWatchEvents. For more information, see AWS service-linked role. *

* * @param putMetricAlarmRequest * @return Result of the PutMetricAlarm operation returned by the service. * @throws LimitExceededException * The quota for alarms for this customer has already been reached. * @sample AmazonCloudWatch.PutMetricAlarm * @see AWS API * Documentation */ PutMetricAlarmResult putMetricAlarm(PutMetricAlarmRequest putMetricAlarmRequest); /** *

* Publishes metric data points to Amazon CloudWatch. CloudWatch associates the data points with the specified * metric. If the specified metric does not exist, CloudWatch creates the metric. When CloudWatch creates a metric, * it can take up to fifteen minutes for the metric to appear in calls to ListMetrics. *

*

* You can publish either individual data points in the Value field, or arrays of values and the number * of times each value occurred during the period by using the Values and Counts fields in * the MetricDatum structure. Using the Values and Counts method enables you * to publish up to 150 values per metric with one PutMetricData request, and supports retrieving * percentile statistics on this data. *

*

* Each PutMetricData request is limited to 40 KB in size for HTTP POST requests. You can send a * payload compressed by gzip. Each request is also limited to no more than 20 different metrics. *

*

* Although the Value parameter accepts numbers of type Double, CloudWatch rejects values * that are either too small or too large. Values must be in the range of 8.515920e-109 to 1.174271e+108 (Base 10) * or 2e-360 to 2e360 (Base 2). In addition, special values (for example, NaN, +Infinity, -Infinity) are not * supported. *

*

* You can use up to 10 dimensions per metric to further clarify what data the metric collects. Each dimension * consists of a Name and Value pair. For more information about specifying dimensions, see Publishing * Metrics in the Amazon CloudWatch User Guide. *

*

* Data points with time stamps from 24 hours ago or longer can take at least 48 hours to become available for * GetMetricData or GetMetricStatistics from the time they are submitted. *

*

* CloudWatch needs raw data points to calculate percentile statistics. If you publish data using a statistic set * instead, you can only retrieve percentile statistics for this data if one of the following conditions is true: *

*
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  • *

    * The SampleCount value of the statistic set is 1 and Min, Max, and * Sum are all equal. *

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    * The Min and Max are equal, and Sum is equal to Min multiplied * by SampleCount. *

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* * @param putMetricDataRequest * @return Result of the PutMetricData operation returned by the service. * @throws InvalidParameterValueException * The value of an input parameter is bad or out-of-range. * @throws MissingRequiredParameterException * An input parameter that is required is missing. * @throws InvalidParameterCombinationException * Parameters were used together that cannot be used together. * @throws InternalServiceException * Request processing has failed due to some unknown error, exception, or failure. * @sample AmazonCloudWatch.PutMetricData * @see AWS API * Documentation */ PutMetricDataResult putMetricData(PutMetricDataRequest putMetricDataRequest); /** *

* Temporarily sets the state of an alarm for testing purposes. When the updated state differs from the previous * value, the action configured for the appropriate state is invoked. For example, if your alarm is configured to * send an Amazon SNS message when an alarm is triggered, temporarily changing the alarm state to ALARM * sends an SNS message. The alarm returns to its actual state (often within seconds). Because the alarm state * change happens quickly, it is typically only visible in the alarm's History tab in the Amazon CloudWatch * console or through DescribeAlarmHistory. *

* * @param setAlarmStateRequest * @return Result of the SetAlarmState operation returned by the service. * @throws ResourceNotFoundException * The named resource does not exist. * @throws InvalidFormatException * Data was not syntactically valid JSON. * @sample AmazonCloudWatch.SetAlarmState * @see AWS API * Documentation */ SetAlarmStateResult setAlarmState(SetAlarmStateRequest setAlarmStateRequest); /** * Shuts down this client object, releasing any resources that might be held open. This is an optional method, and * callers are not expected to call it, but can if they want to explicitly release any open resources. Once a client * has been shutdown, it should not be used to make any more requests. */ void shutdown(); /** * Returns additional metadata for a previously executed successful request, typically used for debugging issues * where a service isn't acting as expected. This data isn't considered part of the result data returned by an * operation, so it's available through this separate, diagnostic interface. *

* Response metadata is only cached for a limited period of time, so if you need to access this extra diagnostic * information for an executed request, you should use this method to retrieve it as soon as possible after * executing a request. * * @param request * The originally executed request. * * @return The response metadata for the specified request, or null if none is available. */ ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request); AmazonCloudWatchWaiters waiters(); }





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