com.amazonaws.services.cloudwatch

Interface AmazonCloudWatch

All Known Subinterfaces:

AmazonCloudWatchAsync

All Known Implementing Classes:

AmazonCloudWatchAsyncClient, AmazonCloudWatchClient

public interface AmazonCloudWatch

Interface for accessing AmazonCloudWatch. Amazon CloudWatch

This is the Amazon CloudWatch API Reference . This guide provides detailed information about Amazon CloudWatch actions, data types, parameters, and errors. For detailed information about Amazon CloudWatch features and their associated API calls, go to the Amazon CloudWatch Developer Guide .

Amazon CloudWatch is a web service that enables you to publish, monitor, and manage various metrics, as well as configure alarm actions based on data from metrics. For more information about this product go to http://aws.amazon.com/cloudwatch .

Use the following links to get started using the Amazon CloudWatch API Reference :

• Actions : An alphabetical list of all Amazon CloudWatch actions.
• Data Types : An alphabetical list of all Amazon CloudWatch data types.
• Common Parameters : Parameters that all Query actions can use.
• Common Errors : Client and server errors that all actions can return.
• Regions and Endpoints : Itemized regions and endpoints for all AWS products.
• WSDL Location : http://monitoring.amazonaws.com/doc/2010-08-01/CloudWatch.wsdl

Method Summary

Methods

Modifier and Type	Method and Description
void	deleteAlarms(DeleteAlarmsRequest deleteAlarmsRequest) Deletes all specified alarms.
DescribeAlarmHistoryResult	describeAlarmHistory() Retrieves history for the specified alarm.
DescribeAlarmHistoryResult	describeAlarmHistory(DescribeAlarmHistoryRequest describeAlarmHistoryRequest) Retrieves history for the specified alarm.
DescribeAlarmsResult	describeAlarms() Retrieves alarms with the specified names.
DescribeAlarmsResult	describeAlarms(DescribeAlarmsRequest describeAlarmsRequest) Retrieves alarms with the specified names.
DescribeAlarmsForMetricResult	describeAlarmsForMetric(DescribeAlarmsForMetricRequest describeAlarmsForMetricRequest) Retrieves all alarms for a single metric.
void	disableAlarmActions(DisableAlarmActionsRequest disableAlarmActionsRequest) Disables actions for the specified alarms.
void	enableAlarmActions(EnableAlarmActionsRequest enableAlarmActionsRequest) Enables actions for the specified alarms.
ResponseMetadata	getCachedResponseMetadata(AmazonWebServiceRequest request) Returns additional metadata for a previously executed successful request, typically used for debugging issues where a service isn't acting as expected.
GetMetricStatisticsResult	getMetricStatistics(GetMetricStatisticsRequest getMetricStatisticsRequest) Gets statistics for the specified metric.
ListMetricsResult	listMetrics() Returns a list of valid metrics stored for the AWS account owner.
ListMetricsResult	listMetrics(ListMetricsRequest listMetricsRequest) Returns a list of valid metrics stored for the AWS account owner.
void	putMetricAlarm(PutMetricAlarmRequest putMetricAlarmRequest) Creates or updates an alarm and associates it with the specified Amazon CloudWatch metric.
void	putMetricData(PutMetricDataRequest putMetricDataRequest) Publishes metric data points to Amazon CloudWatch.
void	setAlarmState(SetAlarmStateRequest setAlarmStateRequest) Temporarily sets the state of an alarm.
void	setEndpoint(String endpoint) Overrides the default endpoint for this client ("https://monitoring.us-east-1.amazonaws.com").
void	setRegion(Region region) An alternative to setEndpoint(String), sets the regional endpoint for this client's service calls.
void	shutdown() Shuts down this client object, releasing any resources that might be held open.

Method Detail

setEndpoint

void setEndpoint(String endpoint)
                 throws IllegalArgumentException

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 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: http://developer.amazonwebservices.com/connect/entry.jspa?externalID=3912

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.

Parameters:

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.

Throws:

IllegalArgumentException - If any problems are detected with the specified endpoint.

setRegion

void setRegion(Region region)
               throws IllegalArgumentException

An alternative to 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 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.

Parameters:

region - The region this client will communicate with. See Region.getRegion(com.amazonaws.regions.Regions) for accessing a given region.

Throws:

IllegalArgumentException - If the given region is null, or if this service isn't available in the given region. See Region.isServiceSupported(String)

See Also:

Region.getRegion(com.amazonaws.regions.Regions), Region.createClient(Class, com.amazonaws.auth.AWSCredentialsProvider, ClientConfiguration)

putMetricAlarm

void putMetricAlarm(PutMetricAlarmRequest putMetricAlarmRequest)
                    throws AmazonServiceException,
                           AmazonClientException

Creates or updates an alarm and associates it with the specified Amazon CloudWatch metric. Optionally, this operation can associate one or more Amazon Simple Notification Service resources with the alarm.

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

NOTE: When updating an existing alarm, its StateValue is left unchanged.

Parameters:

putMetricAlarmRequest - Container for the necessary parameters to execute the PutMetricAlarm service method on AmazonCloudWatch.

Throws:

LimitExceededException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

putMetricData

void putMetricData(PutMetricDataRequest putMetricDataRequest)
                   throws AmazonServiceException,
                          AmazonClientException

Publishes metric data points to Amazon CloudWatch. Amazon Cloudwatch associates the data points with the specified metric. If the specified metric does not exist, Amazon CloudWatch creates the metric.

NOTE: If you create a metric with the PutMetricData action, allow up to fifteen minutes for the metric to appear in calls to the ListMetrics action.

The size of a PutMetricData request is limited to 8 KB for HTTP GET requests and 40 KB for HTTP POST requests.

IMPORTANT: Although the Value parameter accepts numbers of type Double, Amazon CloudWatch truncates values with very large exponents. Values with base-10 exponents greater than 126 (1 x 10^126) are truncated. Likewise, values with base-10 exponents less than -130 (1 x 10^-130) are also truncated.

Parameters:

putMetricDataRequest - Container for the necessary parameters to execute the PutMetricData service method on AmazonCloudWatch.

Throws:

InvalidParameterValueException

InternalServiceException

InvalidParameterCombinationException

MissingRequiredParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

listMetrics

ListMetricsResult listMetrics(ListMetricsRequest listMetricsRequest)
                              throws AmazonServiceException,
                                     AmazonClientException

Returns a list of valid metrics stored for the AWS account owner. Returned metrics can be used with GetMetricStatistics to obtain statistical data for a given metric.

NOTE: Up to 500 results are returned for any one call. To retrieve further results, use returned NextToken values with subsequent ListMetrics operations.

NOTE: If you create a metric with the PutMetricData action, allow up to fifteen minutes for the metric to appear in calls to the ListMetrics action.

Parameters:

listMetricsRequest - Container for the necessary parameters to execute the ListMetrics service method on AmazonCloudWatch.

Returns:

The response from the ListMetrics service method, as returned by AmazonCloudWatch.

Throws:

InternalServiceException

InvalidParameterValueException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

getMetricStatistics

GetMetricStatisticsResult getMetricStatistics(GetMetricStatisticsRequest getMetricStatisticsRequest)
                                              throws AmazonServiceException,
                                                     AmazonClientException

Gets statistics for the specified metric.

NOTE: The maximum number of data points returned from a single GetMetricStatistics request is 1,440. If a request is made that generates more than 1,440 data points, Amazon CloudWatch returns an error. In such a case, alter the request by narrowing the specified time range or increasing the specified period. Alternatively, make multiple requests across adjacent time ranges.

Amazon CloudWatch aggregates data points based on the length of the period that you specify. For example, if you request statistics with a one-minute granularity, Amazon CloudWatch aggregates data points with time stamps that fall within the same one-minute period. In such a case, the data points queried can greatly outnumber the data points returned.

NOTE: The maximum number of data points that can be queried is 50,850; whereas the maximum number of data points returned is 1,440.

The following examples show various statistics allowed by the data point query maximum of 50,850 when you call GetMetricStatistics on Amazon EC2 instances with detailed (one-minute) monitoring enabled:

• Statistics for up to 400 instances for a span of one hour
• Statistics for up to 35 instances over a span of 24 hours
• Statistics for up to 2 instances over a span of 2 weeks

Parameters:

getMetricStatisticsRequest - Container for the necessary parameters to execute the GetMetricStatistics service method on AmazonCloudWatch.

Returns:

The response from the GetMetricStatistics service method, as returned by AmazonCloudWatch.

Throws:

InvalidParameterValueException

InternalServiceException

InvalidParameterCombinationException

MissingRequiredParameterException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

disableAlarmActions

void disableAlarmActions(DisableAlarmActionsRequest disableAlarmActionsRequest)
                         throws AmazonServiceException,
                                AmazonClientException

Disables actions for the specified alarms. When an alarm's actions are disabled the alarm's state may change, but none of the alarm's actions will execute.

Parameters:

disableAlarmActionsRequest - Container for the necessary parameters to execute the DisableAlarmActions service method on AmazonCloudWatch.

Throws:

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

describeAlarms

DescribeAlarmsResult describeAlarms(DescribeAlarmsRequest describeAlarmsRequest)
                                    throws AmazonServiceException,
                                           AmazonClientException

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

Parameters:

describeAlarmsRequest - Container for the necessary parameters to execute the DescribeAlarms service method on AmazonCloudWatch.

Returns:

The response from the DescribeAlarms service method, as returned by AmazonCloudWatch.

Throws:

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

describeAlarmsForMetric

DescribeAlarmsForMetricResult describeAlarmsForMetric(DescribeAlarmsForMetricRequest describeAlarmsForMetricRequest)
                                                      throws AmazonServiceException,
                                                             AmazonClientException

Retrieves all alarms for a single metric. Specify a statistic, period, or unit to filter the set of alarms further.

Parameters:

describeAlarmsForMetricRequest - Container for the necessary parameters to execute the DescribeAlarmsForMetric service method on AmazonCloudWatch.

Returns:

The response from the DescribeAlarmsForMetric service method, as returned by AmazonCloudWatch.

Throws:

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

describeAlarmHistory

DescribeAlarmHistoryResult describeAlarmHistory(DescribeAlarmHistoryRequest describeAlarmHistoryRequest)
                                                throws AmazonServiceException,
                                                       AmazonClientException

Retrieves history for the specified alarm. Filter alarms by date range or item type. If an alarm name is not specified, Amazon CloudWatch returns histories for all of the owner's alarms.

NOTE: Amazon CloudWatch retains the history of an alarm for two weeks, whether or not you delete the alarm.

Parameters:

describeAlarmHistoryRequest - Container for the necessary parameters to execute the DescribeAlarmHistory service method on AmazonCloudWatch.

Returns:

The response from the DescribeAlarmHistory service method, as returned by AmazonCloudWatch.

Throws:

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

enableAlarmActions

void enableAlarmActions(EnableAlarmActionsRequest enableAlarmActionsRequest)
                        throws AmazonServiceException,
                               AmazonClientException

Enables actions for the specified alarms.

Parameters:

enableAlarmActionsRequest - Container for the necessary parameters to execute the EnableAlarmActions service method on AmazonCloudWatch.

Throws:

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

deleteAlarms

void deleteAlarms(DeleteAlarmsRequest deleteAlarmsRequest)
                  throws AmazonServiceException,
                         AmazonClientException

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

Parameters:

deleteAlarmsRequest - Container for the necessary parameters to execute the DeleteAlarms service method on AmazonCloudWatch.

Throws:

ResourceNotFoundException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

setAlarmState

void setAlarmState(SetAlarmStateRequest setAlarmStateRequest)
                   throws AmazonServiceException,
                          AmazonClientException

Temporarily sets the state of an alarm. When the updated StateValue differs from the previous value, the action configured for the appropriate state is invoked. This is not a permanent change. The next periodic alarm check (in about a minute) will set the alarm to its actual state.

Parameters:

setAlarmStateRequest - Container for the necessary parameters to execute the SetAlarmState service method on AmazonCloudWatch.

Throws:

ResourceNotFoundException

InvalidFormatException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

listMetrics

ListMetricsResult listMetrics()
                              throws AmazonServiceException,
                                     AmazonClientException

Returns a list of valid metrics stored for the AWS account owner. Returned metrics can be used with GetMetricStatistics to obtain statistical data for a given metric.

NOTE: Up to 500 results are returned for any one call. To retrieve further results, use returned NextToken values with subsequent ListMetrics operations.

NOTE: If you create a metric with the PutMetricData action, allow up to fifteen minutes for the metric to appear in calls to the ListMetrics action.

Returns:

The response from the ListMetrics service method, as returned by AmazonCloudWatch.

Throws:

InternalServiceException

InvalidParameterValueException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

describeAlarms

DescribeAlarmsResult describeAlarms()
                                    throws AmazonServiceException,
                                           AmazonClientException

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

Returns:

The response from the DescribeAlarms service method, as returned by AmazonCloudWatch.

Throws:

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

describeAlarmHistory

DescribeAlarmHistoryResult describeAlarmHistory()
                                                throws AmazonServiceException,
                                                       AmazonClientException

Retrieves history for the specified alarm. Filter alarms by date range or item type. If an alarm name is not specified, Amazon CloudWatch returns histories for all of the owner's alarms.

NOTE: Amazon CloudWatch retains the history of an alarm for two weeks, whether or not you delete the alarm.

Returns:

The response from the DescribeAlarmHistory service method, as returned by AmazonCloudWatch.

Throws:

InvalidNextTokenException

AmazonClientException - If any internal errors are encountered inside the client while attempting to make the request or handle the response. For example if a network connection is not available.

AmazonServiceException - If an error response is returned by AmazonCloudWatch indicating either a problem with the data in the request, or a server side issue.

shutdown

void shutdown()

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.

getCachedResponseMetadata

ResponseMetadata getCachedResponseMetadata(AmazonWebServiceRequest request)

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.

Parameters:

request - The originally executed request.

Returns:

The response metadata for the specified request, or null if none is available.