Class: Aws::CloudWatch::Client

Inherits:
Seahorse::Client::Base show all
Includes:
Aws::ClientStubs
Defined in:
gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb

Overview

An API client for CloudWatch. To construct a client, you need to configure a :region and :credentials.

client = Aws::CloudWatch::Client.new(
  region: region_name,
  credentials: credentials,
  # ...
)

For details on configuring region and credentials see the developer guide.

See #initialize for a full list of supported configuration options.

Instance Attribute Summary

Attributes inherited from Seahorse::Client::Base

#config, #handlers

API Operations collapse

Instance Method Summary collapse

Methods included from Aws::ClientStubs

#api_requests, #stub_data, #stub_responses

Methods inherited from Seahorse::Client::Base

add_plugin, api, clear_plugins, define, new, #operation_names, plugins, remove_plugin, set_api, set_plugins

Methods included from Seahorse::Client::HandlerBuilder

#handle, #handle_request, #handle_response

Constructor Details

#initialize(options) ⇒ Client

Returns a new instance of Client.

Parameters:

  • options (Hash)

Options Hash (options):

  • :credentials (required, Aws::CredentialProvider) —

    Your AWS credentials. This can be an instance of any one of the following classes:

    • Aws::Credentials - Used for configuring static, non-refreshing credentials.

    • Aws::SharedCredentials - Used for loading static credentials from a shared file, such as ~/.aws/config.

    • Aws::AssumeRoleCredentials - Used when you need to assume a role.

    • Aws::AssumeRoleWebIdentityCredentials - Used when you need to assume a role after providing credentials via the web.

    • Aws::SSOCredentials - Used for loading credentials from AWS SSO using an access token generated from aws login.

    • Aws::ProcessCredentials - Used for loading credentials from a process that outputs to stdout.

    • Aws::InstanceProfileCredentials - Used for loading credentials from an EC2 IMDS on an EC2 instance.

    • Aws::ECSCredentials - Used for loading credentials from instances running in ECS.

    • Aws::CognitoIdentityCredentials - Used for loading credentials from the Cognito Identity service.

    When :credentials are not configured directly, the following locations will be searched for credentials:

    • Aws.config[:credentials]
    • The :access_key_id, :secret_access_key, and :session_token options.
    • ENV['AWS_ACCESS_KEY_ID'], ENV['AWS_SECRET_ACCESS_KEY']
    • ~/.aws/credentials
    • ~/.aws/config
    • EC2/ECS IMDS instance profile - When used by default, the timeouts are very aggressive. Construct and pass an instance of Aws::InstanceProfileCredentails or Aws::ECSCredentials to enable retries and extended timeouts. Instance profile credential fetching can be disabled by setting ENV['AWS_EC2_METADATA_DISABLED'] to true.
  • :region (required, String) —

    The AWS region to connect to. The configured :region is used to determine the service :endpoint. When not passed, a default :region is searched for in the following locations:

    • Aws.config[:region]
    • ENV['AWS_REGION']
    • ENV['AMAZON_REGION']
    • ENV['AWS_DEFAULT_REGION']
    • ~/.aws/credentials
    • ~/.aws/config
  • :access_key_id (String)
  • :active_endpoint_cache (Boolean) — default: false —

    When set to true, a thread polling for endpoints will be running in the background every 60 secs (default). Defaults to false.

  • :adaptive_retry_wait_to_fill (Boolean) — default: true —

    Used only in adaptive retry mode. When true, the request will sleep until there is sufficent client side capacity to retry the request. When false, the request will raise a RetryCapacityNotAvailableError and will not retry instead of sleeping.

  • :client_side_monitoring (Boolean) — default: false —

    When true, client-side metrics will be collected for all API requests from this client.

  • :client_side_monitoring_client_id (String) — default: "" —

    Allows you to provide an identifier for this client which will be attached to all generated client side metrics. Defaults to an empty string.

  • :client_side_monitoring_host (String) — default: "127.0.0.1" —

    Allows you to specify the DNS hostname or IPv4 or IPv6 address that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_port (Integer) — default: 31000 —

    Required for publishing client metrics. The port that the client side monitoring agent is running on, where client metrics will be published via UDP.

  • :client_side_monitoring_publisher (Aws::ClientSideMonitoring::Publisher) — default: Aws::ClientSideMonitoring::Publisher —

    Allows you to provide a custom client-side monitoring publisher class. By default, will use the Client Side Monitoring Agent Publisher.

  • :convert_params (Boolean) — default: true —

    When true, an attempt is made to coerce request parameters into the required types.

  • :correct_clock_skew (Boolean) — default: true —

    Used only in standard and adaptive retry modes. Specifies whether to apply a clock skew correction and retry requests with skewed client clocks.

  • :disable_host_prefix_injection (Boolean) — default: false —

    Set to true to disable SDK automatically adding host prefix to default service endpoint when available.

  • :endpoint (String) —

    The client endpoint is normally constructed from the :region option. You should only configure an :endpoint when connecting to test or custom endpoints. This should be a valid HTTP(S) URI.

  • :endpoint_cache_max_entries (Integer) — default: 1000 —

    Used for the maximum size limit of the LRU cache storing endpoints data for endpoint discovery enabled operations. Defaults to 1000.

  • :endpoint_cache_max_threads (Integer) — default: 10 —

    Used for the maximum threads in use for polling endpoints to be cached, defaults to 10.

  • :endpoint_cache_poll_interval (Integer) — default: 60 —

    When :endpoint_discovery and :active_endpoint_cache is enabled, Use this option to config the time interval in seconds for making requests fetching endpoints information. Defaults to 60 sec.

  • :endpoint_discovery (Boolean) — default: false —

    When set to true, endpoint discovery will be enabled for operations when available.

  • :log_formatter (Aws::Log::Formatter) — default: Aws::Log::Formatter.default —

    The log formatter.

  • :log_level (Symbol) — default: :info —

    The log level to send messages to the :logger at.

  • :logger (Logger) —

    The Logger instance to send log messages to. If this option is not set, logging will be disabled.

  • :max_attempts (Integer) — default: 3 —

    An integer representing the maximum number attempts that will be made for a single request, including the initial attempt. For example, setting this value to 5 will result in a request being retried up to 4 times. Used in standard and adaptive retry modes.

  • :profile (String) — default: "default" —

    Used when loading credentials from the shared credentials file at HOME/.aws/credentials. When not specified, 'default' is used.

  • :retry_backoff (Proc) —

    A proc or lambda used for backoff. Defaults to 2**retries * retry_base_delay. This option is only used in the legacy retry mode.

  • :retry_base_delay (Float) — default: 0.3 —

    The base delay in seconds used by the default backoff function. This option is only used in the legacy retry mode.

  • :retry_jitter (Symbol) — default: :none —

    A delay randomiser function used by the default backoff function. Some predefined functions can be referenced by name - :none, :equal, :full, otherwise a Proc that takes and returns a number. This option is only used in the legacy retry mode.

    @see https://www.awsarchitectureblog.com/2015/03/backoff.html

  • :retry_limit (Integer) — default: 3 —

    The maximum number of times to retry failed requests. Only ~ 500 level server errors and certain ~ 400 level client errors are retried. Generally, these are throttling errors, data checksum errors, networking errors, timeout errors, auth errors, endpoint discovery, and errors from expired credentials. This option is only used in the legacy retry mode.

  • :retry_max_delay (Integer) — default: 0 —

    The maximum number of seconds to delay between retries (0 for no limit) used by the default backoff function. This option is only used in the legacy retry mode.

  • :retry_mode (String) — default: "legacy" —

    Specifies which retry algorithm to use. Values are:

    • legacy - The pre-existing retry behavior. This is default value if no retry mode is provided.

    • standard - A standardized set of retry rules across the AWS SDKs. This includes support for retry quotas, which limit the number of unsuccessful retries a client can make.

    • adaptive - An experimental retry mode that includes all the functionality of standard mode along with automatic client side throttling. This is a provisional mode that may change behavior in the future.

  • :secret_access_key (String)
  • :session_token (String)
  • :stub_responses (Boolean) — default: false —

    Causes the client to return stubbed responses. By default fake responses are generated and returned. You can specify the response data to return or errors to raise by calling Aws::ClientStubs#stub_responses. See Aws::ClientStubs for more information.

    Please note When response stubbing is enabled, no HTTP requests are made, and retries are disabled.

  • :use_dualstack_endpoint (Boolean) —

    When set to true, dualstack enabled endpoints (with .aws TLD) will be used if available.

  • :use_fips_endpoint (Boolean) —

    When set to true, fips compatible endpoints will be used if available. When a fips region is used, the region is normalized and this config is set to true.

  • :validate_params (Boolean) — default: true —

    When true, request parameters are validated before sending the request.

  • :http_proxy (URI::HTTP, String) —

    A proxy to send requests through. Formatted like 'http://proxy.com:123'.

  • :http_open_timeout (Float) — default: 15 —

    The number of seconds to wait when opening a HTTP session before raising a Timeout::Error.

  • :http_read_timeout (Integer) — default: 60 —

    The default number of seconds to wait for response data. This value can safely be set per-request on the session.

  • :http_idle_timeout (Float) — default: 5 —

    The number of seconds a connection is allowed to sit idle before it is considered stale. Stale connections are closed and removed from the pool before making a request.

  • :http_continue_timeout (Float) — default: 1 —

    The number of seconds to wait for a 100-continue response before sending the request body. This option has no effect unless the request has "Expect" header set to "100-continue". Defaults to nil which disables this behaviour. This value can safely be set per request on the session.

  • :http_wire_trace (Boolean) — default: false —

    When true, HTTP debug output will be sent to the :logger.

  • :ssl_verify_peer (Boolean) — default: true —

    When true, SSL peer certificates are verified when establishing a connection.

  • :ssl_ca_bundle (String) —

    Full path to the SSL certificate authority bundle file that should be used when verifying peer certificates. If you do not pass :ssl_ca_bundle or :ssl_ca_directory the the system default will be used if available.

  • :ssl_ca_directory (String) —

    Full path of the directory that contains the unbundled SSL certificate authority files for verifying peer certificates. If you do not pass :ssl_ca_bundle or :ssl_ca_directory the the system default will be used if available.



335
336
337
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 335

def initialize(*args)
  super
end

Instance Method Details

#delete_alarms(params = {}) ⇒ Struct

Deletes the specified alarms. You can delete up to 100 alarms in one operation. However, this total can include no more than one composite alarm. For example, you could delete 99 metric alarms and one composite alarms with one operation, but you can't delete two composite alarms with one operation.

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

It is possible to create a loop or cycle of composite alarms, where composite alarm A depends on composite alarm B, and composite alarm B also depends on composite alarm A. In this scenario, you can't delete any composite alarm that is part of the cycle because there is always still a composite alarm that depends on that alarm that you want to delete.

To get out of such a situation, you must break the cycle by changing the rule of one of the composite alarms in the cycle to remove a dependency that creates the cycle. The simplest change to make to break a cycle is to change the AlarmRule of one of the alarms to False.

Additionally, the evaluation of composite alarms stops if CloudWatch detects a cycle in the evaluation path.

Examples:

Request syntax with placeholder values


resp = client.delete_alarms({
  alarm_names: ["AlarmName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_names (required, Array<String>) —

    The alarms to be deleted.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



382
383
384
385
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 382

def delete_alarms(params = {}, options = {})
  req = build_request(:delete_alarms, params)
  req.send_request(options)
end

#delete_anomaly_detector(params = {}) ⇒ Struct

Deletes the specified anomaly detection model from your account.

Examples:

Request syntax with placeholder values


resp = client.delete_anomaly_detector({
  namespace: "Namespace",
  metric_name: "MetricName",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  stat: "AnomalyDetectorMetricStat",
  single_metric_anomaly_detector: {
    namespace: "Namespace",
    metric_name: "MetricName",
    dimensions: [
      {
        name: "DimensionName", # required
        value: "DimensionValue", # required
      },
    ],
    stat: "AnomalyDetectorMetricStat",
  },
  metric_math_anomaly_detector: {
    metric_data_queries: [
      {
        id: "MetricId", # required
        metric_stat: {
          metric: { # required
            namespace: "Namespace",
            metric_name: "MetricName",
            dimensions: [
              {
                name: "DimensionName", # required
                value: "DimensionValue", # required
              },
            ],
          },
          period: 1, # required
          stat: "Stat", # required
          unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
        },
        expression: "MetricExpression",
        label: "MetricLabel",
        return_data: false,
        period: 1,
        account_id: "AccountId",
      },
    ],
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :namespace (String) —

    The namespace associated with the anomaly detection model to delete.

  • :metric_name (String) —

    The metric name associated with the anomaly detection model to delete.

  • :dimensions (Array<Types::Dimension>) —

    The metric dimensions associated with the anomaly detection model to delete.

  • :stat (String) —

    The statistic associated with the anomaly detection model to delete.

  • :single_metric_anomaly_detector (Types::SingleMetricAnomalyDetector) —

    A single metric anomaly detector to be deleted.

    When using SingleMetricAnomalyDetector, you cannot include the following parameters in the same operation:

    • Dimensions,

    • MetricName

    • Namespace

    • Stat

    • the MetricMathAnomalyDetector parameters of DeleteAnomalyDetectorInput

    Instead, specify the single metric anomaly detector attributes as part of the SingleMetricAnomalyDetector property.

  • :metric_math_anomaly_detector (Types::MetricMathAnomalyDetector) —

    The metric math anomaly detector to be deleted.

    When using MetricMathAnomalyDetector, you cannot include following parameters in the same operation:

    • Dimensions,

    • MetricName

    • Namespace

    • Stat

    • the SingleMetricAnomalyDetector parameters of DeleteAnomalyDetectorInput

    Instead, specify the metric math anomaly detector attributes as part of the MetricMathAnomalyDetector property.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



500
501
502
503
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 500

def delete_anomaly_detector(params = {}, options = {})
  req = build_request(:delete_anomaly_detector, params)
  req.send_request(options)
end

#delete_dashboards(params = {}) ⇒ Struct

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

Examples:

Request syntax with placeholder values


resp = client.delete_dashboards({
  dashboard_names: ["DashboardName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :dashboard_names (required, Array<String>) —

    The dashboards to be deleted. This parameter is required.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



524
525
526
527
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 524

def delete_dashboards(params = {}, options = {})
  req = build_request(:delete_dashboards, params)
  req.send_request(options)
end

#delete_insight_rules(params = {}) ⇒ Types::DeleteInsightRulesOutput

Permanently deletes the specified Contributor Insights rules.

If you create a rule, delete it, and then re-create it with the same name, historical data from the first time the rule was created might not be available.

Examples:

Request syntax with placeholder values


resp = client.delete_insight_rules({
  rule_names: ["InsightRuleName"], # required
})

Response structure


resp.failures #=> Array
resp.failures[0].failure_resource #=> String
resp.failures[0].exception_type #=> String
resp.failures[0].failure_code #=> String
resp.failures[0].failure_description #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :rule_names (required, Array<String>) —

    An array of the rule names to delete. If you need to find out the names of your rules, use DescribeInsightRules.

Returns:

See Also:



565
566
567
568
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 565

def delete_insight_rules(params = {}, options = {})
  req = build_request(:delete_insight_rules, params)
  req.send_request(options)
end

#delete_metric_stream(params = {}) ⇒ Struct

Permanently deletes the metric stream that you specify.

Examples:

Request syntax with placeholder values


resp = client.delete_metric_stream({
  name: "MetricStreamName", # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :name (required, String) —

    The name of the metric stream to delete.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



587
588
589
590
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 587

def delete_metric_stream(params = {}, options = {})
  req = build_request(:delete_metric_stream, params)
  req.send_request(options)
end

#describe_alarm_history(params = {}) ⇒ Types::DescribeAlarmHistoryOutput

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 either all metric alarms or all composite alarms are returned.

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

To use this operation and return information about a composite alarm, you must be signed on with the cloudwatch:DescribeAlarmHistory permission that is scoped to *. You can't return information about composite alarms if your cloudwatch:DescribeAlarmHistory permission has a narrower scope.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.describe_alarm_history({
  alarm_name: "AlarmName",
  alarm_types: ["CompositeAlarm"], # accepts CompositeAlarm, MetricAlarm
  history_item_type: "ConfigurationUpdate", # accepts ConfigurationUpdate, StateUpdate, Action
  start_date: Time.now,
  end_date: Time.now,
  max_records: 1,
  next_token: "NextToken",
  scan_by: "TimestampDescending", # accepts TimestampDescending, TimestampAscending
})

Response structure


resp.alarm_history_items #=> Array
resp.alarm_history_items[0].alarm_name #=> String
resp.alarm_history_items[0].alarm_type #=> String, one of "CompositeAlarm", "MetricAlarm"
resp.alarm_history_items[0].timestamp #=> Time
resp.alarm_history_items[0].history_item_type #=> String, one of "ConfigurationUpdate", "StateUpdate", "Action"
resp.alarm_history_items[0].history_summary #=> String
resp.alarm_history_items[0].history_data #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_name (String) —

    The name of the alarm.

  • :alarm_types (Array<String>) —

    Use this parameter to specify whether you want the operation to return metric alarms or composite alarms. If you omit this parameter, only metric alarms are returned.

  • :history_item_type (String) —

    The type of alarm histories to retrieve.

  • :start_date (Time, DateTime, Date, Integer, String) —

    The starting date to retrieve alarm history.

  • :end_date (Time, DateTime, Date, Integer, String) —

    The ending date to retrieve alarm history.

  • :max_records (Integer) —

    The maximum number of alarm history records to retrieve.

  • :next_token (String) —

    The token returned by a previous call to indicate that there is more data available.

  • :scan_by (String) —

    Specified whether to return the newest or oldest alarm history first. Specify TimestampDescending to have the newest event history returned first, and specify TimestampAscending to have the oldest history returned first.

Returns:

See Also:



671
672
673
674
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 671

def describe_alarm_history(params = {}, options = {})
  req = build_request(:describe_alarm_history, params)
  req.send_request(options)
end

#describe_alarms(params = {}) ⇒ Types::DescribeAlarmsOutput

Retrieves the specified alarms. You can filter the results by specifying a prefix for the alarm name, the alarm state, or a prefix for any action.

To use this operation and return information about composite alarms, you must be signed on with the cloudwatch:DescribeAlarms permission that is scoped to *. You can't return information about composite alarms if your cloudwatch:DescribeAlarms permission has a narrower scope.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

The following waiters are defined for this operation (see #wait_until for detailed usage):

  • alarm_exists
  • composite_alarm_exists

Examples:

Request syntax with placeholder values


resp = client.describe_alarms({
  alarm_names: ["AlarmName"],
  alarm_name_prefix: "AlarmNamePrefix",
  alarm_types: ["CompositeAlarm"], # accepts CompositeAlarm, MetricAlarm
  children_of_alarm_name: "AlarmName",
  parents_of_alarm_name: "AlarmName",
  state_value: "OK", # accepts OK, ALARM, INSUFFICIENT_DATA
  action_prefix: "ActionPrefix",
  max_records: 1,
  next_token: "NextToken",
})

Response structure


resp.composite_alarms #=> Array
resp.composite_alarms[0].actions_enabled #=> Boolean
resp.composite_alarms[0].alarm_actions #=> Array
resp.composite_alarms[0].alarm_actions[0] #=> String
resp.composite_alarms[0].alarm_arn #=> String
resp.composite_alarms[0].alarm_configuration_updated_timestamp #=> Time
resp.composite_alarms[0].alarm_description #=> String
resp.composite_alarms[0].alarm_name #=> String
resp.composite_alarms[0].alarm_rule #=> String
resp.composite_alarms[0].insufficient_data_actions #=> Array
resp.composite_alarms[0].insufficient_data_actions[0] #=> String
resp.composite_alarms[0].ok_actions #=> Array
resp.composite_alarms[0].ok_actions[0] #=> String
resp.composite_alarms[0].state_reason #=> String
resp.composite_alarms[0].state_reason_data #=> String
resp.composite_alarms[0].state_updated_timestamp #=> Time
resp.composite_alarms[0].state_value #=> String, one of "OK", "ALARM", "INSUFFICIENT_DATA"
resp.metric_alarms #=> Array
resp.metric_alarms[0].alarm_name #=> String
resp.metric_alarms[0].alarm_arn #=> String
resp.metric_alarms[0].alarm_description #=> String
resp.metric_alarms[0].alarm_configuration_updated_timestamp #=> Time
resp.metric_alarms[0].actions_enabled #=> Boolean
resp.metric_alarms[0].ok_actions #=> Array
resp.metric_alarms[0].ok_actions[0] #=> String
resp.metric_alarms[0].alarm_actions #=> Array
resp.metric_alarms[0].alarm_actions[0] #=> String
resp.metric_alarms[0].insufficient_data_actions #=> Array
resp.metric_alarms[0].insufficient_data_actions[0] #=> String
resp.metric_alarms[0].state_value #=> String, one of "OK", "ALARM", "INSUFFICIENT_DATA"
resp.metric_alarms[0].state_reason #=> String
resp.metric_alarms[0].state_reason_data #=> String
resp.metric_alarms[0].state_updated_timestamp #=> Time
resp.metric_alarms[0].metric_name #=> String
resp.metric_alarms[0].namespace #=> String
resp.metric_alarms[0].statistic #=> String, one of "SampleCount", "Average", "Sum", "Minimum", "Maximum"
resp.metric_alarms[0].extended_statistic #=> String
resp.metric_alarms[0].dimensions #=> Array
resp.metric_alarms[0].dimensions[0].name #=> String
resp.metric_alarms[0].dimensions[0].value #=> String
resp.metric_alarms[0].period #=> Integer
resp.metric_alarms[0].unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.metric_alarms[0].evaluation_periods #=> Integer
resp.metric_alarms[0].datapoints_to_alarm #=> Integer
resp.metric_alarms[0].threshold #=> Float
resp.metric_alarms[0].comparison_operator #=> String, one of "GreaterThanOrEqualToThreshold", "GreaterThanThreshold", "LessThanThreshold", "LessThanOrEqualToThreshold", "LessThanLowerOrGreaterThanUpperThreshold", "LessThanLowerThreshold", "GreaterThanUpperThreshold"
resp.metric_alarms[0].treat_missing_data #=> String
resp.metric_alarms[0].evaluate_low_sample_count_percentile #=> String
resp.metric_alarms[0].metrics #=> Array
resp.metric_alarms[0].metrics[0].id #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.namespace #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.metric_name #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions #=> Array
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions[0].name #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions[0].value #=> String
resp.metric_alarms[0].metrics[0].metric_stat.period #=> Integer
resp.metric_alarms[0].metrics[0].metric_stat.stat #=> String
resp.metric_alarms[0].metrics[0].metric_stat.unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.metric_alarms[0].metrics[0].expression #=> String
resp.metric_alarms[0].metrics[0].label #=> String
resp.metric_alarms[0].metrics[0].return_data #=> Boolean
resp.metric_alarms[0].metrics[0].period #=> Integer
resp.metric_alarms[0].metrics[0]. #=> String
resp.metric_alarms[0].threshold_metric_id #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_names (Array<String>) —

    The names of the alarms to retrieve information about.

  • :alarm_name_prefix (String) —

    An alarm name prefix. If you specify this parameter, you receive information about all alarms that have names that start with this prefix.

    If this parameter is specified, you cannot specify AlarmNames.

  • :alarm_types (Array<String>) —

    Use this parameter to specify whether you want the operation to return metric alarms or composite alarms. If you omit this parameter, only metric alarms are returned.

  • :children_of_alarm_name (String) —

    If you use this parameter and specify the name of a composite alarm, the operation returns information about the "children" alarms of the alarm you specify. These are the metric alarms and composite alarms referenced in the AlarmRule field of the composite alarm that you specify in ChildrenOfAlarmName. Information about the composite alarm that you name in ChildrenOfAlarmName is not returned.

    If you specify ChildrenOfAlarmName, you cannot specify any other parameters in the request except for MaxRecords and NextToken. If you do so, you receive a validation error.

    Only the Alarm Name, ARN, StateValue (OK/ALARM/INSUFFICIENT_DATA), and StateUpdatedTimestamp information are returned by this operation when you use this parameter. To get complete information about these alarms, perform another DescribeAlarms operation and specify the parent alarm names in the AlarmNames parameter.

  • :parents_of_alarm_name (String) —

    If you use this parameter and specify the name of a metric or composite alarm, the operation returns information about the "parent" alarms of the alarm you specify. These are the composite alarms that have AlarmRule parameters that reference the alarm named in ParentsOfAlarmName. Information about the alarm that you specify in ParentsOfAlarmName is not returned.

    If you specify ParentsOfAlarmName, you cannot specify any other parameters in the request except for MaxRecords and NextToken. If you do so, you receive a validation error.

    Only the Alarm Name and ARN are returned by this operation when you use this parameter. To get complete information about these alarms, perform another DescribeAlarms operation and specify the parent alarm names in the AlarmNames parameter.

  • :state_value (String) —

    Specify this parameter to receive information only about alarms that are currently in the state that you specify.

  • :action_prefix (String) —

    Use this parameter to filter the results of the operation to only those alarms that use a certain alarm action. For example, you could specify the ARN of an SNS topic to find all alarms that send notifications to that topic.

  • :max_records (Integer) —

    The maximum number of alarm descriptions to retrieve.

  • :next_token (String) —

    The token returned by a previous call to indicate that there is more data available.

Returns:

See Also:



858
859
860
861
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 858

def describe_alarms(params = {}, options = {})
  req = build_request(:describe_alarms, params)
  req.send_request(options)
end

#describe_alarms_for_metric(params = {}) ⇒ Types::DescribeAlarmsForMetricOutput

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

This operation retrieves only standard alarms that are based on the specified metric. It does not return alarms based on math expressions that use the specified metric, or composite alarms that use the specified metric.

Examples:

Request syntax with placeholder values


resp = client.describe_alarms_for_metric({
  metric_name: "MetricName", # required
  namespace: "Namespace", # required
  statistic: "SampleCount", # accepts SampleCount, Average, Sum, Minimum, Maximum
  extended_statistic: "ExtendedStatistic",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  period: 1,
  unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
})

Response structure


resp.metric_alarms #=> Array
resp.metric_alarms[0].alarm_name #=> String
resp.metric_alarms[0].alarm_arn #=> String
resp.metric_alarms[0].alarm_description #=> String
resp.metric_alarms[0].alarm_configuration_updated_timestamp #=> Time
resp.metric_alarms[0].actions_enabled #=> Boolean
resp.metric_alarms[0].ok_actions #=> Array
resp.metric_alarms[0].ok_actions[0] #=> String
resp.metric_alarms[0].alarm_actions #=> Array
resp.metric_alarms[0].alarm_actions[0] #=> String
resp.metric_alarms[0].insufficient_data_actions #=> Array
resp.metric_alarms[0].insufficient_data_actions[0] #=> String
resp.metric_alarms[0].state_value #=> String, one of "OK", "ALARM", "INSUFFICIENT_DATA"
resp.metric_alarms[0].state_reason #=> String
resp.metric_alarms[0].state_reason_data #=> String
resp.metric_alarms[0].state_updated_timestamp #=> Time
resp.metric_alarms[0].metric_name #=> String
resp.metric_alarms[0].namespace #=> String
resp.metric_alarms[0].statistic #=> String, one of "SampleCount", "Average", "Sum", "Minimum", "Maximum"
resp.metric_alarms[0].extended_statistic #=> String
resp.metric_alarms[0].dimensions #=> Array
resp.metric_alarms[0].dimensions[0].name #=> String
resp.metric_alarms[0].dimensions[0].value #=> String
resp.metric_alarms[0].period #=> Integer
resp.metric_alarms[0].unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.metric_alarms[0].evaluation_periods #=> Integer
resp.metric_alarms[0].datapoints_to_alarm #=> Integer
resp.metric_alarms[0].threshold #=> Float
resp.metric_alarms[0].comparison_operator #=> String, one of "GreaterThanOrEqualToThreshold", "GreaterThanThreshold", "LessThanThreshold", "LessThanOrEqualToThreshold", "LessThanLowerOrGreaterThanUpperThreshold", "LessThanLowerThreshold", "GreaterThanUpperThreshold"
resp.metric_alarms[0].treat_missing_data #=> String
resp.metric_alarms[0].evaluate_low_sample_count_percentile #=> String
resp.metric_alarms[0].metrics #=> Array
resp.metric_alarms[0].metrics[0].id #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.namespace #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.metric_name #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions #=> Array
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions[0].name #=> String
resp.metric_alarms[0].metrics[0].metric_stat.metric.dimensions[0].value #=> String
resp.metric_alarms[0].metrics[0].metric_stat.period #=> Integer
resp.metric_alarms[0].metrics[0].metric_stat.stat #=> String
resp.metric_alarms[0].metrics[0].metric_stat.unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.metric_alarms[0].metrics[0].expression #=> String
resp.metric_alarms[0].metrics[0].label #=> String
resp.metric_alarms[0].metrics[0].return_data #=> Boolean
resp.metric_alarms[0].metrics[0].period #=> Integer
resp.metric_alarms[0].metrics[0]. #=> String
resp.metric_alarms[0].threshold_metric_id #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :metric_name (required, String) —

    The name of the metric.

  • :namespace (required, String) —

    The namespace of the metric.

  • :statistic (String) —

    The statistic for the metric, other than percentiles. For percentile statistics, use ExtendedStatistics.

  • :extended_statistic (String) —

    The percentile statistic for the metric. Specify a value between p0.0 and p100.

  • :dimensions (Array<Types::Dimension>) —

    The dimensions associated with the metric. If the metric has any associated dimensions, you must specify them in order for the call to succeed.

  • :period (Integer) —

    The period, in seconds, over which the statistic is applied.

  • :unit (String) —

    The unit for the metric.

Returns:

See Also:



971
972
973
974
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 971

def describe_alarms_for_metric(params = {}, options = {})
  req = build_request(:describe_alarms_for_metric, params)
  req.send_request(options)
end

#describe_anomaly_detectors(params = {}) ⇒ Types::DescribeAnomalyDetectorsOutput

Lists the anomaly detection models that you have created in your account. For single metric anomaly detectors, you can list all of the models in your account or filter the results to only the models that are related to a certain namespace, metric name, or metric dimension. For metric math anomaly detectors, you can list them by adding METRIC_MATH to the AnomalyDetectorTypes array. This will return all metric math anomaly detectors in your account.

Examples:

Request syntax with placeholder values


resp = client.describe_anomaly_detectors({
  next_token: "NextToken",
  max_results: 1,
  namespace: "Namespace",
  metric_name: "MetricName",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  anomaly_detector_types: ["SINGLE_METRIC"], # accepts SINGLE_METRIC, METRIC_MATH
})

Response structure


resp.anomaly_detectors #=> Array
resp.anomaly_detectors[0].namespace #=> String
resp.anomaly_detectors[0].metric_name #=> String
resp.anomaly_detectors[0].dimensions #=> Array
resp.anomaly_detectors[0].dimensions[0].name #=> String
resp.anomaly_detectors[0].dimensions[0].value #=> String
resp.anomaly_detectors[0].stat #=> String
resp.anomaly_detectors[0].configuration.excluded_time_ranges #=> Array
resp.anomaly_detectors[0].configuration.excluded_time_ranges[0].start_time #=> Time
resp.anomaly_detectors[0].configuration.excluded_time_ranges[0].end_time #=> Time
resp.anomaly_detectors[0].configuration.metric_timezone #=> String
resp.anomaly_detectors[0].state_value #=> String, one of "PENDING_TRAINING", "TRAINED_INSUFFICIENT_DATA", "TRAINED"
resp.anomaly_detectors[0].single_metric_anomaly_detector.namespace #=> String
resp.anomaly_detectors[0].single_metric_anomaly_detector.metric_name #=> String
resp.anomaly_detectors[0].single_metric_anomaly_detector.dimensions #=> Array
resp.anomaly_detectors[0].single_metric_anomaly_detector.dimensions[0].name #=> String
resp.anomaly_detectors[0].single_metric_anomaly_detector.dimensions[0].value #=> String
resp.anomaly_detectors[0].single_metric_anomaly_detector.stat #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries #=> Array
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].id #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.metric.namespace #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.metric.metric_name #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.metric.dimensions #=> Array
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.metric.dimensions[0].name #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.metric.dimensions[0].value #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.period #=> Integer
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.stat #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].metric_stat.unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].expression #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].label #=> String
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].return_data #=> Boolean
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0].period #=> Integer
resp.anomaly_detectors[0].metric_math_anomaly_detector.metric_data_queries[0]. #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :next_token (String) —

    Use the token returned by the previous operation to request the next page of results.

  • :max_results (Integer) —

    The maximum number of results to return in one operation. The maximum value that you can specify is 100.

    To retrieve the remaining results, make another call with the returned NextToken value.

  • :namespace (String) —

    Limits the results to only the anomaly detection models that are associated with the specified namespace.

  • :metric_name (String) —

    Limits the results to only the anomaly detection models that are associated with the specified metric name. If there are multiple metrics with this name in different namespaces that have anomaly detection models, they're all returned.

  • :dimensions (Array<Types::Dimension>) —

    Limits the results to only the anomaly detection models that are associated with the specified metric dimensions. If there are multiple metrics that have these dimensions and have anomaly detection models associated, they're all returned.

  • :anomaly_detector_types (Array<String>) —

    The anomaly detector types to request when using DescribeAnomalyDetectorsInput. If empty, defaults to SINGLE_METRIC.

Returns:

See Also:



1078
1079
1080
1081
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1078

def describe_anomaly_detectors(params = {}, options = {})
  req = build_request(:describe_anomaly_detectors, params)
  req.send_request(options)
end

#describe_insight_rules(params = {}) ⇒ Types::DescribeInsightRulesOutput

Returns a list of all the Contributor Insights rules in your account.

For more information about Contributor Insights, see Using Contributor Insights to Analyze High-Cardinality Data.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.describe_insight_rules({
  next_token: "NextToken",
  max_results: 1,
})

Response structure


resp.next_token #=> String
resp.insight_rules #=> Array
resp.insight_rules[0].name #=> String
resp.insight_rules[0].state #=> String
resp.insight_rules[0].schema #=> String
resp.insight_rules[0].definition #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :next_token (String) —

    Include this value, if it was returned by the previous operation, to get the next set of rules.

  • :max_results (Integer) —

    The maximum number of results to return in one operation. If you omit this parameter, the default of 500 is used.

Returns:

See Also:



1127
1128
1129
1130
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1127

def describe_insight_rules(params = {}, options = {})
  req = build_request(:describe_insight_rules, params)
  req.send_request(options)
end

#disable_alarm_actions(params = {}) ⇒ Struct

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.

Examples:

Request syntax with placeholder values


resp = client.disable_alarm_actions({
  alarm_names: ["AlarmName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_names (required, Array<String>) —

    The names of the alarms.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



1151
1152
1153
1154
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1151

def disable_alarm_actions(params = {}, options = {})
  req = build_request(:disable_alarm_actions, params)
  req.send_request(options)
end

#disable_insight_rules(params = {}) ⇒ Types::DisableInsightRulesOutput

Disables the specified Contributor Insights rules. When rules are disabled, they do not analyze log groups and do not incur costs.

Examples:

Request syntax with placeholder values


resp = client.disable_insight_rules({
  rule_names: ["InsightRuleName"], # required
})

Response structure


resp.failures #=> Array
resp.failures[0].failure_resource #=> String
resp.failures[0].exception_type #=> String
resp.failures[0].failure_code #=> String
resp.failures[0].failure_description #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :rule_names (required, Array<String>) —

    An array of the rule names to disable. If you need to find out the names of your rules, use DescribeInsightRules.

Returns:

See Also:



1189
1190
1191
1192
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1189

def disable_insight_rules(params = {}, options = {})
  req = build_request(:disable_insight_rules, params)
  req.send_request(options)
end

#enable_alarm_actions(params = {}) ⇒ Struct

Enables the actions for the specified alarms.

Examples:

Request syntax with placeholder values


resp = client.enable_alarm_actions({
  alarm_names: ["AlarmName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_names (required, Array<String>) —

    The names of the alarms.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



1211
1212
1213
1214
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1211

def enable_alarm_actions(params = {}, options = {})
  req = build_request(:enable_alarm_actions, params)
  req.send_request(options)
end

#enable_insight_rules(params = {}) ⇒ Types::EnableInsightRulesOutput

Enables the specified Contributor Insights rules. When rules are enabled, they immediately begin analyzing log data.

Examples:

Request syntax with placeholder values


resp = client.enable_insight_rules({
  rule_names: ["InsightRuleName"], # required
})

Response structure


resp.failures #=> Array
resp.failures[0].failure_resource #=> String
resp.failures[0].exception_type #=> String
resp.failures[0].failure_code #=> String
resp.failures[0].failure_description #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :rule_names (required, Array<String>) —

    An array of the rule names to enable. If you need to find out the names of your rules, use DescribeInsightRules.

Returns:

See Also:



1249
1250
1251
1252
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1249

def enable_insight_rules(params = {}, options = {})
  req = build_request(:enable_insight_rules, params)
  req.send_request(options)
end

#get_dashboard(params = {}) ⇒ Types::GetDashboardOutput

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.

Examples:

Request syntax with placeholder values


resp = client.get_dashboard({
  dashboard_name: "DashboardName", # required
})

Response structure


resp.dashboard_arn #=> String
resp.dashboard_body #=> String
resp.dashboard_name #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :dashboard_name (required, String) —

    The name of the dashboard to be described.

Returns:

See Also:



1285
1286
1287
1288
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1285

def get_dashboard(params = {}, options = {})
  req = build_request(:get_dashboard, params)
  req.send_request(options)
end

#get_insight_rule_report(params = {}) ⇒ Types::GetInsightRuleReportOutput

This operation returns the time series data collected by a Contributor Insights rule. The data includes the identity and number of contributors to the log group.

You can also optionally return one or more statistics about each data point in the time series. These statistics can include the following:

  • UniqueContributors -- the number of unique contributors for each data point.

  • MaxContributorValue -- the value of the top contributor for each data point. The identity of the contributor might change for each data point in the graph.

    If this rule aggregates by COUNT, the top contributor for each data point is the contributor with the most occurrences in that period. If the rule aggregates by SUM, the top contributor is the contributor with the highest sum in the log field specified by the rule's Value, during that period.

  • SampleCount -- the number of data points matched by the rule.

  • Sum -- the sum of the values from all contributors during the time period represented by that data point.

  • Minimum -- the minimum value from a single observation during the time period represented by that data point.

  • Maximum -- the maximum value from a single observation during the time period represented by that data point.

  • Average -- the average value from all contributors during the time period represented by that data point.

Examples:

Request syntax with placeholder values


resp = client.get_insight_rule_report({
  rule_name: "InsightRuleName", # required
  start_time: Time.now, # required
  end_time: Time.now, # required
  period: 1, # required
  max_contributor_count: 1,
  metrics: ["InsightRuleMetricName"],
  order_by: "InsightRuleOrderBy",
})

Response structure


resp.key_labels #=> Array
resp.key_labels[0] #=> String
resp.aggregation_statistic #=> String
resp.aggregate_value #=> Float
resp.approximate_unique_count #=> Integer
resp.contributors #=> Array
resp.contributors[0].keys #=> Array
resp.contributors[0].keys[0] #=> String
resp.contributors[0].approximate_aggregate_value #=> Float
resp.contributors[0].datapoints #=> Array
resp.contributors[0].datapoints[0].timestamp #=> Time
resp.contributors[0].datapoints[0].approximate_value #=> Float
resp.metric_datapoints #=> Array
resp.metric_datapoints[0].timestamp #=> Time
resp.metric_datapoints[0].unique_contributors #=> Float
resp.metric_datapoints[0].max_contributor_value #=> Float
resp.metric_datapoints[0].sample_count #=> Float
resp.metric_datapoints[0].average #=> Float
resp.metric_datapoints[0].sum #=> Float
resp.metric_datapoints[0].minimum #=> Float
resp.metric_datapoints[0].maximum #=> Float

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :rule_name (required, String) —

    The name of the rule that you want to see data from.

  • :start_time (required, Time, DateTime, Date, Integer, String) —

    The start time of the data to use in the report. When used in a raw HTTP Query API, it is formatted as yyyy-MM-dd'T'HH:mm:ss. For example, 2019-07-01T23:59:59.

  • :end_time (required, Time, DateTime, Date, Integer, String) —

    The end time of the data to use in the report. When used in a raw HTTP Query API, it is formatted as yyyy-MM-dd'T'HH:mm:ss. For example, 2019-07-01T23:59:59.

  • :period (required, Integer) —

    The period, in seconds, to use for the statistics in the InsightRuleMetricDatapoint results.

  • :max_contributor_count (Integer) —

    The maximum number of contributors to include in the report. The range is 1 to 100. If you omit this, the default of 10 is used.

  • :metrics (Array<String>) —

    Specifies which metrics to use for aggregation of contributor values for the report. You can specify one or more of the following metrics:

    • UniqueContributors -- the number of unique contributors for each data point.

    • MaxContributorValue -- the value of the top contributor for each data point. The identity of the contributor might change for each data point in the graph.

      If this rule aggregates by COUNT, the top contributor for each data point is the contributor with the most occurrences in that period. If the rule aggregates by SUM, the top contributor is the contributor with the highest sum in the log field specified by the rule's Value, during that period.

    • SampleCount -- the number of data points matched by the rule.

    • Sum -- the sum of the values from all contributors during the time period represented by that data point.

    • Minimum -- the minimum value from a single observation during the time period represented by that data point.

    • Maximum -- the maximum value from a single observation during the time period represented by that data point.

    • Average -- the average value from all contributors during the time period represented by that data point.

  • :order_by (String) —

    Determines what statistic to use to rank the contributors. Valid values are SUM and MAXIMUM.

Returns:

See Also:



1429
1430
1431
1432
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1429

def get_insight_rule_report(params = {}, options = {})
  req = build_request(:get_insight_rule_report, params)
  req.send_request(options)
end

#get_metric_data(params = {}) ⇒ Types::GetMetricDataOutput

You can use the GetMetricData API to retrieve as many as 500 different metrics in a single request, with a total of as many as 100,800 data points. 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:

  • 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.

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

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

  • 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.

If you omit Unit in your request, all data that was collected with any unit is returned, along with the corresponding units that were specified when the data was reported to CloudWatch. If you specify a unit, the operation returns only data that was collected with that unit specified. If you specify a unit that does not match the data collected, the results of the operation are null. CloudWatch does not perform unit conversions.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.get_metric_data({
  metric_data_queries: [ # required
    {
      id: "MetricId", # required
      metric_stat: {
        metric: { # required
          namespace: "Namespace",
          metric_name: "MetricName",
          dimensions: [
            {
              name: "DimensionName", # required
              value: "DimensionValue", # required
            },
          ],
        },
        period: 1, # required
        stat: "Stat", # required
        unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
      },
      expression: "MetricExpression",
      label: "MetricLabel",
      return_data: false,
      period: 1,
      account_id: "AccountId",
    },
  ],
  start_time: Time.now, # required
  end_time: Time.now, # required
  next_token: "NextToken",
  scan_by: "TimestampDescending", # accepts TimestampDescending, TimestampAscending
  max_datapoints: 1,
  label_options: {
    timezone: "GetMetricDataLabelTimezone",
  },
})

Response structure


resp.metric_data_results #=> Array
resp.metric_data_results[0].id #=> String
resp.metric_data_results[0].label #=> String
resp.metric_data_results[0].timestamps #=> Array
resp.metric_data_results[0].timestamps[0] #=> Time
resp.metric_data_results[0].values #=> Array
resp.metric_data_results[0].values[0] #=> Float
resp.metric_data_results[0].status_code #=> String, one of "Complete", "InternalError", "PartialData"
resp.metric_data_results[0].messages #=> Array
resp.metric_data_results[0].messages[0].code #=> String
resp.metric_data_results[0].messages[0].value #=> String
resp.next_token #=> String
resp.messages #=> Array
resp.messages[0].code #=> String
resp.messages[0].value #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :metric_data_queries (required, Array<Types::MetricDataQuery>) —

    The metric queries to be returned. A single GetMetricData call can include as many as 500 MetricDataQuery structures. Each of these structures can specify either a metric to retrieve, or a math expression to perform on retrieved data.

  • :start_time (required, Time, DateTime, Date, Integer, String) —

    The time stamp indicating the earliest data to be returned.

    The value specified is inclusive; results include data points with the specified time stamp.

    CloudWatch rounds the specified time stamp as follows:

    • Start time less than 15 days ago - Round down to the nearest whole minute. For example, 12:32:34 is rounded down to 12:32:00.

    • Start time between 15 and 63 days ago - Round down to the nearest 5-minute clock interval. For example, 12:32:34 is rounded down to 12:30:00.

    • Start time greater than 63 days ago - Round down to the nearest 1-hour clock interval. For example, 12:32:34 is rounded down to 12:00:00.

    If you set Period to 5, 10, or 30, the start time of your request is rounded down to the nearest time that corresponds to even 5-, 10-, or 30-second divisions of a minute. For example, if you make a query at (HH:mm:ss) 01:05:23 for the previous 10-second period, the start time of your request is rounded down and you receive data from 01:05:10 to 01:05:20. If you make a query at 15:07:17 for the previous 5 minutes of data, using a period of 5 seconds, you receive data timestamped between 15:02:15 and 15:07:15.

    For better performance, specify StartTime and EndTime values that align with the value of the metric's Period and sync up with the beginning and end of an hour. For example, if the Period of a metric is 5 minutes, specifying 12:05 or 12:30 as StartTime can get a faster response from CloudWatch than setting 12:07 or 12:29 as the StartTime.

  • :end_time (required, Time, DateTime, Date, Integer, String) —

    The time stamp indicating the latest data to be returned.

    The value specified is exclusive; results include data points up to the specified time stamp.

    For better performance, specify StartTime and EndTime values that align with the value of the metric's Period and sync up with the beginning and end of an hour. For example, if the Period of a metric is 5 minutes, specifying 12:05 or 12:30 as EndTime can get a faster response from CloudWatch than setting 12:07 or 12:29 as the EndTime.

  • :next_token (String) —

    Include this value, if it was returned by the previous GetMetricData operation, to get the next set of data points.

  • :scan_by (String) —

    The order in which data points should be returned. TimestampDescending returns the newest data first and paginates when the MaxDatapoints limit is reached. TimestampAscending returns the oldest data first and paginates when the MaxDatapoints limit is reached.

  • :max_datapoints (Integer) —

    The maximum number of data points the request should return before paginating. If you omit this, the default of 100,800 is used.

  • :label_options (Types::LabelOptions) —

    This structure includes the Timezone parameter, which you can use to specify your time zone so that the labels of returned data display the correct time for your time zone.

Returns:

See Also:



1626
1627
1628
1629
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1626

def get_metric_data(params = {}, options = {})
  req = build_request(:get_metric_data, params)
  req.send_request(options)
end

#get_metric_statistics(params = {}) ⇒ Types::GetMetricStatisticsOutput

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:

  • The SampleCount value of the statistic set is 1.

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

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.

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

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

  • 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 Amazon Web Services services, see the Amazon CloudWatch Metrics and Dimensions Reference in the Amazon CloudWatch User Guide.

Examples:

Request syntax with placeholder values


resp = client.get_metric_statistics({
  namespace: "Namespace", # required
  metric_name: "MetricName", # required
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  start_time: Time.now, # required
  end_time: Time.now, # required
  period: 1, # required
  statistics: ["SampleCount"], # accepts SampleCount, Average, Sum, Minimum, Maximum
  extended_statistics: ["ExtendedStatistic"],
  unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
})

Response structure


resp.label #=> String
resp.datapoints #=> Array
resp.datapoints[0].timestamp #=> Time
resp.datapoints[0].sample_count #=> Float
resp.datapoints[0].average #=> Float
resp.datapoints[0].sum #=> Float
resp.datapoints[0].minimum #=> Float
resp.datapoints[0].maximum #=> Float
resp.datapoints[0].unit #=> String, one of "Seconds", "Microseconds", "Milliseconds", "Bytes", "Kilobytes", "Megabytes", "Gigabytes", "Terabytes", "Bits", "Kilobits", "Megabits", "Gigabits", "Terabits", "Percent", "Count", "Bytes/Second", "Kilobytes/Second", "Megabytes/Second", "Gigabytes/Second", "Terabytes/Second", "Bits/Second", "Kilobits/Second", "Megabits/Second", "Gigabits/Second", "Terabits/Second", "Count/Second", "None"
resp.datapoints[0].extended_statistics #=> Hash
resp.datapoints[0].extended_statistics["ExtendedStatistic"] #=> Float

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :namespace (required, String) —

    The namespace of the metric, with or without spaces.

  • :metric_name (required, String) —

    The name of the metric, with or without spaces.

  • :dimensions (Array<Types::Dimension>) —

    The dimensions. If the metric contains multiple dimensions, you must include a value for each dimension. CloudWatch treats each unique combination of dimensions as a separate metric. If a specific combination of dimensions was not published, you can't retrieve statistics for it. You must specify the same dimensions that were used when the metrics were created. For an example, see Dimension Combinations in the Amazon CloudWatch User Guide. For more information about specifying dimensions, see Publishing Metrics in the Amazon CloudWatch User Guide.

  • :start_time (required, Time, DateTime, Date, Integer, String) —

    The time stamp that determines the first data point to return. Start times are evaluated relative to the time that CloudWatch receives the request.

    The value specified is inclusive; results include data points with the specified time stamp. In a raw HTTP query, the time stamp must be in ISO 8601 UTC format (for example, 2016-10-03T23:00:00Z).

    CloudWatch rounds the specified time stamp as follows:

    • Start time less than 15 days ago - Round down to the nearest whole minute. For example, 12:32:34 is rounded down to 12:32:00.

    • Start time between 15 and 63 days ago - Round down to the nearest 5-minute clock interval. For example, 12:32:34 is rounded down to 12:30:00.

    • Start time greater than 63 days ago - Round down to the nearest 1-hour clock interval. For example, 12:32:34 is rounded down to 12:00:00.

    If you set Period to 5, 10, or 30, the start time of your request is rounded down to the nearest time that corresponds to even 5-, 10-, or 30-second divisions of a minute. For example, if you make a query at (HH:mm:ss) 01:05:23 for the previous 10-second period, the start time of your request is rounded down and you receive data from 01:05:10 to 01:05:20. If you make a query at 15:07:17 for the previous 5 minutes of data, using a period of 5 seconds, you receive data timestamped between 15:02:15 and 15:07:15.

  • :end_time (required, Time, DateTime, Date, Integer, String) —

    The time stamp that determines the last data point to return.

    The value specified is exclusive; results include data points up to the specified time stamp. In a raw HTTP query, the time stamp must be in ISO 8601 UTC format (for example, 2016-10-10T23:00:00Z).

  • :period (required, Integer) —

    The granularity, in seconds, of the returned data points. For metrics with regular resolution, a period can be as short as one minute (60 seconds) and must be a multiple of 60. For high-resolution metrics that are collected at intervals of less than one minute, the period can be 1, 5, 10, 30, 60, or any multiple of 60. High-resolution metrics are those metrics stored by a PutMetricData call that includes a StorageResolution of 1 second.

    If the StartTime parameter specifies a time stamp that is greater than 3 hours ago, you must specify the period as follows or no data points in that time range is returned:

    • Start time between 3 hours and 15 days ago - Use a multiple of 60 seconds (1 minute).

    • Start time between 15 and 63 days ago - Use a multiple of 300 seconds (5 minutes).

    • Start time greater than 63 days ago - Use a multiple of 3600 seconds (1 hour).

  • :statistics (Array<String>) —

    The metric statistics, other than percentile. For percentile statistics, use ExtendedStatistics. When calling GetMetricStatistics, you must specify either Statistics or ExtendedStatistics, but not both.

  • :extended_statistics (Array<String>) —

    The percentile statistics. Specify values between p0.0 and p100. When calling GetMetricStatistics, you must specify either Statistics or ExtendedStatistics, but not both. Percentile statistics are not available for metrics when any of the metric values are negative numbers.

  • :unit (String) —

    The unit for a given metric. If you omit Unit, all data that was collected with any unit is returned, along with the corresponding units that were specified when the data was reported to CloudWatch. If you specify a unit, the operation returns only data that was collected with that unit specified. If you specify a unit that does not match the data collected, the results of the operation are null. CloudWatch does not perform unit conversions.

Returns:

See Also:



1840
1841
1842
1843
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1840

def get_metric_statistics(params = {}, options = {})
  req = build_request(:get_metric_statistics, params)
  req.send_request(options)
end

#get_metric_stream(params = {}) ⇒ Types::GetMetricStreamOutput

Returns information about the metric stream that you specify.

Examples:

Request syntax with placeholder values


resp = client.get_metric_stream({
  name: "MetricStreamName", # required
})

Response structure


resp.arn #=> String
resp.name #=> String
resp.include_filters #=> Array
resp.include_filters[0].namespace #=> String
resp.exclude_filters #=> Array
resp.exclude_filters[0].namespace #=> String
resp.firehose_arn #=> String
resp.role_arn #=> String
resp.state #=> String
resp.creation_date #=> Time
resp.last_update_date #=> Time
resp.output_format #=> String, one of "json", "opentelemetry0.7"

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :name (required, String) —

    The name of the metric stream to retrieve information about.

Returns:

See Also:



1888
1889
1890
1891
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1888

def get_metric_stream(params = {}, options = {})
  req = build_request(:get_metric_stream, params)
  req.send_request(options)
end

#get_metric_widget_image(params = {}) ⇒ Types::GetMetricWidgetImageOutput

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:

  • As many as 100 metrics in the graph.

  • Up to 100 KB uncompressed payload.

Examples:

Request syntax with placeholder values


resp = client.get_metric_widget_image({
  metric_widget: "MetricWidget", # required
  output_format: "OutputFormat",
})

Response structure


resp.metric_widget_image #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :metric_widget (required, String) —

    A JSON string that defines the bitmap graph to be retrieved. The string includes the metrics to include in the graph, statistics, annotations, title, axis limits, and so on. You can include only one MetricWidget parameter in each GetMetricWidgetImage call.

    For more information about the syntax of MetricWidget see GetMetricWidgetImage: Metric Widget Structure and Syntax.

    If any metric on the graph could not load all the requested data points, an orange triangle with an exclamation point appears next to the graph legend.

  • :output_format (String) —

    The format of the resulting image. Only PNG images are supported.

    The default is png. If you specify png, the API returns an HTTP response with the content-type set to text/xml. The image data is in a MetricWidgetImage field. For example:

    <GetMetricWidgetImageResponse xmlns=<URLstring>>

    <GetMetricWidgetImageResult>

    <MetricWidgetImage>

    iVBORw0KGgoAAAANSUhEUgAAAlgAAAGQEAYAAAAip...

    </MetricWidgetImage>

    </GetMetricWidgetImageResult>

    <ResponseMetadata>

    <RequestId>6f0d4192-4d42-11e8-82c1-f539a07e0e3b</RequestId>

    </ResponseMetadata>

    </GetMetricWidgetImageResponse>

    The image/png setting is intended only for custom HTTP requests. For most use cases, and all actions using an Amazon Web Services SDK, you should use png. If you specify image/png, the HTTP response has a content-type set to image/png, and the body of the response is a PNG image.

Returns:

See Also:



1980
1981
1982
1983
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 1980

def get_metric_widget_image(params = {}, options = {})
  req = build_request(:get_metric_widget_image, params)
  req.send_request(options)
end

#list_dashboards(params = {}) ⇒ Types::ListDashboardsOutput

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.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.list_dashboards({
  dashboard_name_prefix: "DashboardNamePrefix",
  next_token: "NextToken",
})

Response structure


resp.dashboard_entries #=> Array
resp.dashboard_entries[0].dashboard_name #=> String
resp.dashboard_entries[0].dashboard_arn #=> String
resp.dashboard_entries[0].last_modified #=> Time
resp.dashboard_entries[0].size #=> Integer
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :dashboard_name_prefix (String) —

    If you specify this parameter, only the dashboards with names starting with the specified string are listed. The maximum length is 255, and valid characters are A-Z, a-z, 0-9, ".", "-", and "_".

  • :next_token (String) —

    The token returned by a previous call to indicate that there is more data available.

Returns:

See Also:



2031
2032
2033
2034
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2031

def list_dashboards(params = {}, options = {})
  req = build_request(:list_dashboards, params)
  req.send_request(options)
end

#list_metric_streams(params = {}) ⇒ Types::ListMetricStreamsOutput

Returns a list of metric streams in this account.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.list_metric_streams({
  next_token: "NextToken",
  max_results: 1,
})

Response structure


resp.next_token #=> String
resp.data.entries #=> Array
resp.data.entries[0].arn #=> String
resp.data.entries[0].creation_date #=> Time
resp.data.entries[0].last_update_date #=> Time
resp.data.entries[0].name #=> String
resp.data.entries[0].firehose_arn #=> String
resp.data.entries[0].state #=> String
resp.data.entries[0].output_format #=> String, one of "json", "opentelemetry0.7"

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :next_token (String) —

    Include this value, if it was returned by the previous call, to get the next set of metric streams.

  • :max_results (Integer) —

    The maximum number of results to return in one operation.

Returns:

See Also:



2075
2076
2077
2078
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2075

def list_metric_streams(params = {}, options = {})
  req = build_request(:list_metric_streams, params)
  req.send_request(options)
end

#list_metrics(params = {}) ⇒ Types::ListMetricsOutput

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 15 minutes before the metric appears. You can see statistics about the metric sooner by using GetMetricData or GetMetricStatistics.

ListMetrics doesn't return information about metrics if those metrics haven't reported data in the past two weeks. To retrieve those metrics, use GetMetricData or GetMetricStatistics.

The returned response is a pageable response and is Enumerable. For details on usage see PageableResponse.

Examples:

Request syntax with placeholder values


resp = client.list_metrics({
  namespace: "Namespace",
  metric_name: "MetricName",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue",
    },
  ],
  next_token: "NextToken",
  recently_active: "PT3H", # accepts PT3H
})

Response structure


resp.metrics #=> Array
resp.metrics[0].namespace #=> String
resp.metrics[0].metric_name #=> String
resp.metrics[0].dimensions #=> Array
resp.metrics[0].dimensions[0].name #=> String
resp.metrics[0].dimensions[0].value #=> String
resp.next_token #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :namespace (String) —

    The metric namespace to filter against. Only the namespace that matches exactly will be returned.

  • :metric_name (String) —

    The name of the metric to filter against. Only the metrics with names that match exactly will be returned.

  • :dimensions (Array<Types::DimensionFilter>) —

    The dimensions to filter against. Only the dimensions that match exactly will be returned.

  • :next_token (String) —

    The token returned by a previous call to indicate that there is more data available.

  • :recently_active (String) —

    To filter the results to show only metrics that have had data points published in the past three hours, specify this parameter with a value of PT3H. This is the only valid value for this parameter.

    The results that are returned are an approximation of the value you specify. There is a low probability that the returned results include metrics with last published data as much as 40 minutes more than the specified time interval.

Returns:

See Also:



2162
2163
2164
2165
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2162

def list_metrics(params = {}, options = {})
  req = build_request(:list_metrics, params)
  req.send_request(options)
end

#list_tags_for_resource(params = {}) ⇒ Types::ListTagsForResourceOutput

Displays the tags associated with a CloudWatch resource. Currently, alarms and Contributor Insights rules support tagging.

Examples:

Request syntax with placeholder values


resp = client.list_tags_for_resource({
  resource_arn: "AmazonResourceName", # required
})

Response structure


resp.tags #=> Array
resp.tags[0].key #=> String
resp.tags[0].value #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :resource_arn (required, String) —

    The ARN of the CloudWatch resource that you want to view tags for.

    The ARN format of an alarm is arn:aws:cloudwatch:Region:account-id:alarm:alarm-name

    The ARN format of a Contributor Insights rule is arn:aws:cloudwatch:Region:account-id:insight-rule:insight-rule-name

    For more information about ARN format, see Resource Types Defined by Amazon CloudWatch in the Amazon Web Services General Reference.

Returns:

See Also:



2206
2207
2208
2209
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2206

def list_tags_for_resource(params = {}, options = {})
  req = build_request(:list_tags_for_resource, params)
  req.send_request(options)
end

#put_anomaly_detector(params = {}) ⇒ Struct

Creates an anomaly detection model for a CloudWatch metric. You can use the model to display a band of expected normal values when the metric is graphed.

For more information, see CloudWatch Anomaly Detection.

Examples:

Request syntax with placeholder values


resp = client.put_anomaly_detector({
  namespace: "Namespace",
  metric_name: "MetricName",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  stat: "AnomalyDetectorMetricStat",
  configuration: {
    excluded_time_ranges: [
      {
        start_time: Time.now, # required
        end_time: Time.now, # required
      },
    ],
    metric_timezone: "AnomalyDetectorMetricTimezone",
  },
  single_metric_anomaly_detector: {
    namespace: "Namespace",
    metric_name: "MetricName",
    dimensions: [
      {
        name: "DimensionName", # required
        value: "DimensionValue", # required
      },
    ],
    stat: "AnomalyDetectorMetricStat",
  },
  metric_math_anomaly_detector: {
    metric_data_queries: [
      {
        id: "MetricId", # required
        metric_stat: {
          metric: { # required
            namespace: "Namespace",
            metric_name: "MetricName",
            dimensions: [
              {
                name: "DimensionName", # required
                value: "DimensionValue", # required
              },
            ],
          },
          period: 1, # required
          stat: "Stat", # required
          unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
        },
        expression: "MetricExpression",
        label: "MetricLabel",
        return_data: false,
        period: 1,
        account_id: "AccountId",
      },
    ],
  },
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :namespace (String) —

    The namespace of the metric to create the anomaly detection model for.

  • :metric_name (String) —

    The name of the metric to create the anomaly detection model for.

  • :dimensions (Array<Types::Dimension>) —

    The metric dimensions to create the anomaly detection model for.

  • :stat (String) —

    The statistic to use for the metric and the anomaly detection model.

  • :configuration (Types::AnomalyDetectorConfiguration) —

    The configuration specifies details about how the anomaly detection model is to be trained, including time ranges to exclude when training and updating the model. You can specify as many as 10 time ranges.

    The configuration can also include the time zone to use for the metric.

  • :single_metric_anomaly_detector (Types::SingleMetricAnomalyDetector) —

    A single metric anomaly detector to be created.

    When using SingleMetricAnomalyDetector, you cannot include the following parameters in the same operation:

    • Dimensions

    • MetricName

    • Namespace

    • Stat

    • the MetricMatchAnomalyDetector parameters of PutAnomalyDetectorInput

    Instead, specify the single metric anomaly detector attributes as part of the property SingleMetricAnomalyDetector.

  • :metric_math_anomaly_detector (Types::MetricMathAnomalyDetector) —

    The metric math anomaly detector to be created.

    When using MetricMathAnomalyDetector, you cannot include the following parameters in the same operation:

    • Dimensions

    • MetricName

    • Namespace

    • Stat

    • the SingleMetricAnomalyDetector parameters of PutAnomalyDetectorInput

    Instead, specify the metric math anomaly detector attributes as part of the property MetricMathAnomalyDetector.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



2348
2349
2350
2351
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2348

def put_anomaly_detector(params = {}, options = {})
  req = build_request(:put_anomaly_detector, params)
  req.send_request(options)
end

#put_composite_alarm(params = {}) ⇒ Struct

Creates or updates a composite alarm. When you create a composite alarm, you specify a rule expression for the alarm that takes into account the alarm states of other alarms that you have created. The composite alarm goes into ALARM state only if all conditions of the rule are met.

The alarms specified in a composite alarm's rule expression can include metric alarms and other composite alarms.

Using composite alarms can reduce alarm noise. You can create multiple metric alarms, and also create a composite alarm and set up alerts only for the composite alarm. For example, you could create a composite alarm that goes into ALARM state only when more than one of the underlying metric alarms are in ALARM state.

Currently, the only alarm actions that can be taken by composite alarms are notifying SNS topics.

It is possible to create a loop or cycle of composite alarms, where composite alarm A depends on composite alarm B, and composite alarm B also depends on composite alarm A. In this scenario, you can't delete any composite alarm that is part of the cycle because there is always still a composite alarm that depends on that alarm that you want to delete.

To get out of such a situation, you must break the cycle by changing the rule of one of the composite alarms in the cycle to remove a dependency that creates the cycle. The simplest change to make to break a cycle is to change the AlarmRule of one of the alarms to False.

Additionally, the evaluation of composite alarms stops if CloudWatch detects a cycle in the evaluation path.

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. For a composite alarm, this initial time after creation is the only time that the alarm can be in INSUFFICIENT_DATA state.

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

To use this operation, you must be signed on with the cloudwatch:PutCompositeAlarm permission that is scoped to *. You can't create a composite alarms if your cloudwatch:PutCompositeAlarm permission has a narrower scope.

If you are an IAM user, you must have iam:CreateServiceLinkedRole to create a composite alarm that has Systems Manager OpsItem actions.

Examples:

Request syntax with placeholder values


resp = client.put_composite_alarm({
  actions_enabled: false,
  alarm_actions: ["ResourceName"],
  alarm_description: "AlarmDescription",
  alarm_name: "AlarmName", # required
  alarm_rule: "AlarmRule", # required
  insufficient_data_actions: ["ResourceName"],
  ok_actions: ["ResourceName"],
  tags: [
    {
      key: "TagKey", # required
      value: "TagValue", # required
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :actions_enabled (Boolean) —

    Indicates whether actions should be executed during any changes to the alarm state of the composite alarm. The default is TRUE.

  • :alarm_actions (Array<String>) —

    The actions to execute when this alarm transitions to the ALARM state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:sns:region:account-id:sns-topic-name | arn:aws:ssm:region:account-id:opsitem:severity

  • :alarm_description (String) —

    The description for the composite alarm.

  • :alarm_name (required, String) —

    The name for the composite alarm. This name must be unique within the Region.

  • :alarm_rule (required, String) —

    An expression that specifies which other alarms are to be evaluated to determine this composite alarm's state. For each alarm that you reference, you designate a function that specifies whether that alarm needs to be in ALARM state, OK state, or INSUFFICIENT_DATA state. You can use operators (AND, OR and NOT) to combine multiple functions in a single expression. You can use parenthesis to logically group the functions in your expression.

    You can use either alarm names or ARNs to reference the other alarms that are to be evaluated.

    Functions can include the following:

    • ALARM("alarm-name or alarm-ARN") is TRUE if the named alarm is in ALARM state.

    • OK("alarm-name or alarm-ARN") is TRUE if the named alarm is in OK state.

    • INSUFFICIENT_DATA("alarm-name or alarm-ARN") is TRUE if the named alarm is in INSUFFICIENT_DATA state.

    • TRUE always evaluates to TRUE.

    • FALSE always evaluates to FALSE.

    TRUE and FALSE are useful for testing a complex AlarmRule structure, and for testing your alarm actions.

    Alarm names specified in AlarmRule can be surrounded with double-quotes ("), but do not have to be.

    The following are some examples of AlarmRule:

    • ALARM(CPUUtilizationTooHigh) AND ALARM(DiskReadOpsTooHigh) specifies that the composite alarm goes into ALARM state only if both CPUUtilizationTooHigh and DiskReadOpsTooHigh alarms are in ALARM state.

    • ALARM(CPUUtilizationTooHigh) AND NOT ALARM(DeploymentInProgress) specifies that the alarm goes to ALARM state if CPUUtilizationTooHigh is in ALARM state and DeploymentInProgress is not in ALARM state. This example reduces alarm noise during a known deployment window.

    • (ALARM(CPUUtilizationTooHigh) OR ALARM(DiskReadOpsTooHigh)) AND OK(NetworkOutTooHigh) goes into ALARM state if CPUUtilizationTooHigh OR DiskReadOpsTooHigh is in ALARM state, and if NetworkOutTooHigh is in OK state. This provides another example of using a composite alarm to prevent noise. This rule ensures that you are not notified with an alarm action on high CPU or disk usage if a known network problem is also occurring.

    The AlarmRule can specify as many as 100 "children" alarms. The AlarmRule expression can have as many as 500 elements. Elements are child alarms, TRUE or FALSE statements, and parentheses.

  • :insufficient_data_actions (Array<String>) —

    The actions to execute when this alarm transitions to the INSUFFICIENT_DATA state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:sns:region:account-id:sns-topic-name

  • :ok_actions (Array<String>) —

    The actions to execute when this alarm transitions to an OK state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:sns:region:account-id:sns-topic-name

  • :tags (Array<Types::Tag>) —

    A list of key-value pairs to associate with the composite alarm. You can associate as many as 50 tags with an alarm.

    Tags can help you organize and categorize your resources. You can also use them to scope user permissions, by granting a user permission to access or change only resources with certain tag values.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



2530
2531
2532
2533
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2530

def put_composite_alarm(params = {}, options = {})
  req = build_request(:put_composite_alarm, params)
  req.send_request(options)
end

#put_dashboard(params = {}) ⇒ Types::PutDashboardOutput

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.

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.

Examples:

Request syntax with placeholder values


resp = client.put_dashboard({
  dashboard_name: "DashboardName", # required
  dashboard_body: "DashboardBody", # required
})

Response structure


resp.dashboard_validation_messages #=> Array
resp.dashboard_validation_messages[0].data_path #=> String
resp.dashboard_validation_messages[0].message #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :dashboard_name (required, String) —

    The name of the dashboard. If a dashboard with this name already exists, this call modifies that dashboard, replacing its current contents. Otherwise, a new dashboard is created. The maximum length is 255, and valid characters are A-Z, a-z, 0-9, "-", and "_". This parameter is required.

  • :dashboard_body (required, String) —

    The detailed information about the dashboard in JSON format, including the widgets to include and their location on the dashboard. This parameter is required.

    For more information about the syntax, see Dashboard Body Structure and Syntax.

Returns:

See Also:



2596
2597
2598
2599
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2596

def put_dashboard(params = {}, options = {})
  req = build_request(:put_dashboard, params)
  req.send_request(options)
end

#put_insight_rule(params = {}) ⇒ Struct

Creates a Contributor Insights rule. Rules evaluate log events in a CloudWatch Logs log group, enabling you to find contributor data for the log events in that log group. For more information, see Using Contributor Insights to Analyze High-Cardinality Data.

If you create a rule, delete it, and then re-create it with the same name, historical data from the first time the rule was created might not be available.

Examples:

Request syntax with placeholder values


resp = client.put_insight_rule({
  rule_name: "InsightRuleName", # required
  rule_state: "InsightRuleState",
  rule_definition: "InsightRuleDefinition", # required
  tags: [
    {
      key: "TagKey", # required
      value: "TagValue", # required
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :rule_name (required, String) —

    A unique name for the rule.

  • :rule_state (String) —

    The state of the rule. Valid values are ENABLED and DISABLED.

  • :rule_definition (required, String) —

    The definition of the rule, as a JSON object. For details on the valid syntax, see Contributor Insights Rule Syntax.

  • :tags (Array<Types::Tag>) —

    A list of key-value pairs to associate with the Contributor Insights rule. You can associate as many as 50 tags with a rule.

    Tags can help you organize and categorize your resources. You can also use them to scope user permissions, by granting a user permission to access or change only the resources that have certain tag values.

    To be able to associate tags with a rule, you must have the cloudwatch:TagResource permission in addition to the cloudwatch:PutInsightRule permission.

    If you are using this operation to update an existing Contributor Insights rule, any tags you specify in this parameter are ignored. To change the tags of an existing rule, use TagResource.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



2668
2669
2670
2671
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 2668

def put_insight_rule(params = {}, options = {})
  req = build_request(:put_insight_rule, params)
  req.send_request(options)
end

#put_metric_alarm(params = {}) ⇒ Struct

Creates or updates an alarm and associates it with the specified metric, metric math expression, or anomaly detection model.

Alarms based on anomaly detection models cannot have Auto Scaling actions.

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:

  • The iam:CreateServiceLinkedRole for all alarms with EC2 actions

  • The iam:CreateServiceLinkedRole to create an alarm with Systems Manager OpsItem actions.

The first time you create an alarm in the Amazon Web Services Management Console, the CLI, or by using the PutMetricAlarm API, CloudWatch creates the necessary service-linked role for you. The service-linked roles are called AWSServiceRoleForCloudWatchEvents and AWSServiceRoleForCloudWatchAlarms_ActionSSM. For more information, see Amazon Web Services service-linked role.

Cross-account alarms

You can set an alarm on metrics in the current account, or in another account. To create a cross-account alarm that watches a metric in a different account, you must have completed the following pre-requisites:

  • The account where the metrics are located (the sharing account) must already have a sharing role named CloudWatch-CrossAccountSharingRole. If it does not already have this role, you must create it using the instructions in Set up a sharing account in Cross-account cross-Region CloudWatch console. The policy for that role must grant access to the ID of the account where you are creating the alarm.

  • The account where you are creating the alarm (the monitoring account) must already have a service-linked role named AWSServiceRoleForCloudWatchCrossAccount to allow CloudWatch to assume the sharing role in the sharing account. If it does not, you must create it following the directions in Set up a monitoring account in Cross-account cross-Region CloudWatch console.

Examples:

Request syntax with placeholder values


resp = client.put_metric_alarm({
  alarm_name: "AlarmName", # required
  alarm_description: "AlarmDescription",
  actions_enabled: false,
  ok_actions: ["ResourceName"],
  alarm_actions: ["ResourceName"],
  insufficient_data_actions: ["ResourceName"],
  metric_name: "MetricName",
  namespace: "Namespace",
  statistic: "SampleCount", # accepts SampleCount, Average, Sum, Minimum, Maximum
  extended_statistic: "ExtendedStatistic",
  dimensions: [
    {
      name: "DimensionName", # required
      value: "DimensionValue", # required
    },
  ],
  period: 1,
  unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
  evaluation_periods: 1, # required
  datapoints_to_alarm: 1,
  threshold: 1.0,
  comparison_operator: "GreaterThanOrEqualToThreshold", # required, accepts GreaterThanOrEqualToThreshold, GreaterThanThreshold, LessThanThreshold, LessThanOrEqualToThreshold, LessThanLowerOrGreaterThanUpperThreshold, LessThanLowerThreshold, GreaterThanUpperThreshold
  treat_missing_data: "TreatMissingData",
  evaluate_low_sample_count_percentile: "EvaluateLowSampleCountPercentile",
  metrics: [
    {
      id: "MetricId", # required
      metric_stat: {
        metric: { # required
          namespace: "Namespace",
          metric_name: "MetricName",
          dimensions: [
            {
              name: "DimensionName", # required
              value: "DimensionValue", # required
            },
          ],
        },
        period: 1, # required
        stat: "Stat", # required
        unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
      },
      expression: "MetricExpression",
      label: "MetricLabel",
      return_data: false,
      period: 1,
      account_id: "AccountId",
    },
  ],
  tags: [
    {
      key: "TagKey", # required
      value: "TagValue", # required
    },
  ],
  threshold_metric_id: "MetricId",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_name (required, String) —

    The name for the alarm. This name must be unique within the Region.

  • :alarm_description (String) —

    The description for the alarm.

  • :actions_enabled (Boolean) —

    Indicates whether actions should be executed during any changes to the alarm state. The default is TRUE.

  • :ok_actions (Array<String>) —

    The actions to execute when this alarm transitions to an OK state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:automate:region:ec2:stop | arn:aws:automate:region:ec2:terminate | arn:aws:automate:region:ec2:recover | arn:aws:automate:region:ec2:reboot | arn:aws:sns:region:account-id:sns-topic-name | arn:aws:autoscaling:region:account-id:scalingPolicy:policy-id:autoScalingGroupName/group-friendly-name:policyName/policy-friendly-name

    Valid Values (for use with IAM roles): arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Stop/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Terminate/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Reboot/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Recover/1.0

  • :alarm_actions (Array<String>) —

    The actions to execute when this alarm transitions to the ALARM state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:automate:region:ec2:stop | arn:aws:automate:region:ec2:terminate | arn:aws:automate:region:ec2:recover | arn:aws:automate:region:ec2:reboot | arn:aws:sns:region:account-id:sns-topic-name | arn:aws:autoscaling:region:account-id:scalingPolicy:policy-id:autoScalingGroupName/group-friendly-name:policyName/policy-friendly-name | arn:aws:ssm:region:account-id:opsitem:severity | arn:aws:ssm-incidents::account-id:response-plan:response-plan-name

    Valid Values (for use with IAM roles): arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Stop/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Terminate/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Reboot/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Recover/1.0

  • :insufficient_data_actions (Array<String>) —

    The actions to execute when this alarm transitions to the INSUFFICIENT_DATA state from any other state. Each action is specified as an Amazon Resource Name (ARN).

    Valid Values: arn:aws:automate:region:ec2:stop | arn:aws:automate:region:ec2:terminate | arn:aws:automate:region:ec2:recover | arn:aws:automate:region:ec2:reboot | arn:aws:sns:region:account-id:sns-topic-name | arn:aws:autoscaling:region:account-id:scalingPolicy:policy-id:autoScalingGroupName/group-friendly-name:policyName/policy-friendly-name

    Valid Values (for use with IAM roles): >arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Stop/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Terminate/1.0 | arn:aws:swf:region:account-id:action/actions/AWS_EC2.InstanceId.Reboot/1.0

  • :metric_name (String) —

    The name for the metric associated with the alarm. For each PutMetricAlarm operation, you must specify either MetricName or a Metrics array.

    If you are creating an alarm based on a math expression, you cannot specify this parameter, or any of the Dimensions, Period, Namespace, Statistic, or ExtendedStatistic parameters. Instead, you specify all this information in the Metrics array.

  • :namespace (String) —

    The namespace for the metric associated specified in MetricName.

  • :statistic (String) —

    The statistic for the metric specified in MetricName, other than percentile. For percentile statistics, use ExtendedStatistic. When you call PutMetricAlarm and specify a MetricName, you must specify either Statistic or ExtendedStatistic, but not both.

  • :extended_statistic (String) —

    The percentile statistic for the metric specified in MetricName. Specify a value between p0.0 and p100. When you call PutMetricAlarm and specify a MetricName, you must specify either Statistic or ExtendedStatistic, but not both.

  • :dimensions (Array<Types::Dimension>) —

    The dimensions for the metric specified in MetricName.

  • :period (Integer) —

    The length, in seconds, used each time the metric specified in MetricName is evaluated. Valid values are 10, 30, and any multiple of 60.

    Period is required for alarms based on static thresholds. If you are creating an alarm based on a metric math expression, you specify the period for each metric within the objects in the Metrics array.

    Be sure to specify 10 or 30 only for metrics that are stored by a PutMetricData call with a StorageResolution of 1. If you specify a period of 10 or 30 for a metric that does not have sub-minute resolution, the alarm still attempts to gather data at the period rate that you specify. In this case, it does not receive data for the attempts that do not correspond to a one-minute data resolution, and the alarm might often lapse into INSUFFICENT_DATA status. Specifying 10 or 30 also sets this alarm as a high-resolution alarm, which has a higher charge than other alarms. For more information about pricing, see Amazon CloudWatch Pricing.

    An alarm's total current evaluation period can be no longer than one day, so Period multiplied by EvaluationPeriods cannot be more than 86,400 seconds.

  • :unit (String) —

    The unit of measure for the statistic. For example, the units for the Amazon EC2 NetworkIn metric are Bytes because NetworkIn tracks the number of bytes that an instance receives on all network interfaces. You can also specify a unit when you create a custom metric. Units help provide conceptual meaning to your data. Metric data points that specify a unit of measure, such as Percent, are aggregated separately.

    If you don't specify Unit, CloudWatch retrieves all unit types that have been published for the metric and attempts to evaluate the alarm. Usually, metrics are published with only one unit, so the alarm works as intended.

    However, if the metric is published with multiple types of units and you don't specify a unit, the alarm's behavior is not defined and it behaves predictably.

    We recommend omitting Unit so that you don't inadvertently specify an incorrect unit that is not published for this metric. Doing so causes the alarm to be stuck in the INSUFFICIENT DATA state.

  • :evaluation_periods (required, Integer) —

    The number of periods over which data is compared to the specified threshold. If you are setting an alarm that requires that a number of consecutive data points be breaching to trigger the alarm, this value specifies that number. If you are setting an "M out of N" alarm, this value is the N.

    An alarm's total current evaluation period can be no longer than one day, so this number multiplied by Period cannot be more than 86,400 seconds.

  • :datapoints_to_alarm (Integer) —

    The number of data points that must be breaching to trigger the alarm. This is used only if you are setting an "M out of N" alarm. In that case, this value is the M. For more information, see Evaluating an Alarm in the Amazon CloudWatch User Guide.

  • :threshold (Float) —

    The value against which the specified statistic is compared.

    This parameter is required for alarms based on static thresholds, but should not be used for alarms based on anomaly detection models.

  • :comparison_operator (required, String) —

    The arithmetic operation to use when comparing the specified statistic and threshold. The specified statistic value is used as the first operand.

    The values LessThanLowerOrGreaterThanUpperThreshold, LessThanLowerThreshold, and GreaterThanUpperThreshold are used only for alarms based on anomaly detection models.

  • :treat_missing_data (String) —

    Sets how this alarm is to handle missing data points. If TreatMissingData is omitted, the default behavior of missing is used. For more information, see Configuring How CloudWatch Alarms Treats Missing Data.

    Valid Values: breaching | notBreaching | ignore | missing

  • :evaluate_low_sample_count_percentile (String) —

    Used only for alarms based on percentiles. If you specify ignore, the alarm state does not change during periods with too few data points to be statistically significant. If you specify evaluate or omit this parameter, the alarm is always evaluated and possibly changes state no matter how many data points are available. For more information, see Percentile-Based CloudWatch Alarms and Low Data Samples.

    Valid Values: evaluate | ignore

  • :metrics (Array<Types::MetricDataQuery>) —

    An array of MetricDataQuery structures that enable you to create an alarm based on the result of a metric math expression. For each PutMetricAlarm operation, you must specify either MetricName or a Metrics array.

    Each item in the Metrics array either retrieves a metric or performs a math expression.

    One item in the Metrics array is the expression that the alarm watches. You designate this expression by setting ReturnData to true for this object in the array. For more information, see MetricDataQuery.

    If you use the Metrics parameter, you cannot include the MetricName, Dimensions, Period, Namespace, Statistic, or ExtendedStatistic parameters of PutMetricAlarm in the same operation. Instead, you retrieve the metrics you are using in your math expression as part of the Metrics array.

  • :tags (Array<Types::Tag>) —

    A list of key-value pairs to associate with the alarm. You can associate as many as 50 tags with an alarm.

    Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

    If you are using this operation to update an existing alarm, any tags you specify in this parameter are ignored. To change the tags of an existing alarm, use TagResource or UntagResource.

  • :threshold_metric_id (String) —

    If this is an alarm based on an anomaly detection model, make this value match the ID of the ANOMALY_DETECTION_BAND function.

    For an example of how to use this parameter, see the Anomaly Detection Model Alarm example on this page.

    If your alarm uses this parameter, it cannot have Auto Scaling actions.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3063
3064
3065
3066
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3063

def put_metric_alarm(params = {}, options = {})
  req = build_request(:put_metric_alarm, params)
  req.send_request(options)
end

#put_metric_data(params = {}) ⇒ Struct

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 -2360 to 2360. 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.

You specify the time stamp to be associated with each data point. You can specify time stamps that are as much as two weeks before the current date, and as much as 2 hours after the current day and time.

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. Data points with time stamps between 3 and 24 hours ago can take as much as 2 hours to become available for for GetMetricData or GetMetricStatistics.

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:

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

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

Examples:

Request syntax with placeholder values


resp = client.put_metric_data({
  namespace: "Namespace", # required
  metric_data: [ # required
    {
      metric_name: "MetricName", # required
      dimensions: [
        {
          name: "DimensionName", # required
          value: "DimensionValue", # required
        },
      ],
      timestamp: Time.now,
      value: 1.0,
      statistic_values: {
        sample_count: 1.0, # required
        sum: 1.0, # required
        minimum: 1.0, # required
        maximum: 1.0, # required
      },
      values: [1.0],
      counts: [1.0],
      unit: "Seconds", # accepts Seconds, Microseconds, Milliseconds, Bytes, Kilobytes, Megabytes, Gigabytes, Terabytes, Bits, Kilobits, Megabits, Gigabits, Terabits, Percent, Count, Bytes/Second, Kilobytes/Second, Megabytes/Second, Gigabytes/Second, Terabytes/Second, Bits/Second, Kilobits/Second, Megabits/Second, Gigabits/Second, Terabits/Second, Count/Second, None
      storage_resolution: 1,
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :namespace (required, String) —

    The namespace for the metric data.

    To avoid conflicts with Amazon Web Services service namespaces, you should not specify a namespace that begins with AWS/

  • :metric_data (required, Array<Types::MetricDatum>) —

    The data for the metric. The array can include no more than 20 metrics per call.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3170
3171
3172
3173
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3170

def put_metric_data(params = {}, options = {})
  req = build_request(:put_metric_data, params)
  req.send_request(options)
end

#put_metric_stream(params = {}) ⇒ Types::PutMetricStreamOutput

Creates or updates a metric stream. Metric streams can automatically stream CloudWatch metrics to Amazon Web Services destinations including Amazon S3 and to many third-party solutions.

For more information, see Using Metric Streams.

To create a metric stream, you must be logged on to an account that has the iam:PassRole permission and either the CloudWatchFullAccess policy or the cloudwatch:PutMetricStream permission.

When you create or update a metric stream, you choose one of the following:

  • Stream metrics from all metric namespaces in the account.

  • Stream metrics from all metric namespaces in the account, except for the namespaces that you list in ExcludeFilters.

  • Stream metrics from only the metric namespaces that you list in IncludeFilters.

When you use PutMetricStream to create a new metric stream, the stream is created in the running state. If you use it to update an existing stream, the state of the stream is not changed.

Examples:

Request syntax with placeholder values


resp = client.put_metric_stream({
  name: "MetricStreamName", # required
  include_filters: [
    {
      namespace: "Namespace",
    },
  ],
  exclude_filters: [
    {
      namespace: "Namespace",
    },
  ],
  firehose_arn: "AmazonResourceName", # required
  role_arn: "AmazonResourceName", # required
  output_format: "json", # required, accepts json, opentelemetry0.7
  tags: [
    {
      key: "TagKey", # required
      value: "TagValue", # required
    },
  ],
})

Response structure


resp.arn #=> String

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :name (required, String) —

    If you are creating a new metric stream, this is the name for the new stream. The name must be different than the names of other metric streams in this account and Region.

    If you are updating a metric stream, specify the name of that stream here.

    Valid characters are A-Z, a-z, 0-9, "-" and "_".

  • :include_filters (Array<Types::MetricStreamFilter>) —

    If you specify this parameter, the stream sends only the metrics from the metric namespaces that you specify here.

    You cannot include IncludeFilters and ExcludeFilters in the same operation.

  • :exclude_filters (Array<Types::MetricStreamFilter>) —

    If you specify this parameter, the stream sends metrics from all metric namespaces except for the namespaces that you specify here.

    You cannot include ExcludeFilters and IncludeFilters in the same operation.

  • :firehose_arn (required, String) —

    The ARN of the Amazon Kinesis Firehose delivery stream to use for this metric stream. This Amazon Kinesis Firehose delivery stream must already exist and must be in the same account as the metric stream.

  • :role_arn (required, String) —

    The ARN of an IAM role that this metric stream will use to access Amazon Kinesis Firehose resources. This IAM role must already exist and must be in the same account as the metric stream. This IAM role must include the following permissions:

    • firehose:PutRecord

    • firehose:PutRecordBatch

  • :output_format (required, String) —

    The output format for the stream. Valid values are json and opentelemetry0.7. For more information about metric stream output formats, see Metric streams output formats.

  • :tags (Array<Types::Tag>) —

    A list of key-value pairs to associate with the metric stream. You can associate as many as 50 tags with a metric stream.

    Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

    You can use this parameter only when you are creating a new metric stream. If you are using this operation to update an existing metric stream, any tags you specify in this parameter are ignored. To change the tags of an existing metric stream, use TagResource or UntagResource.

Returns:

See Also:



3309
3310
3311
3312
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3309

def put_metric_stream(params = {}, options = {})
  req = build_request(:put_metric_stream, params)
  req.send_request(options)
end

#set_alarm_state(params = {}) ⇒ Struct

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.

Metric alarms returns to their actual state quickly, often within seconds. Because the metric alarm state change happens quickly, it is typically only visible in the alarm's History tab in the Amazon CloudWatch console or through DescribeAlarmHistory.

If you use SetAlarmState on a composite alarm, the composite alarm is not guaranteed to return to its actual state. It returns to its actual state only once any of its children alarms change state. It is also reevaluated if you update its configuration.

If an alarm triggers EC2 Auto Scaling policies or application Auto Scaling policies, you must include information in the StateReasonData parameter to enable the policy to take the correct action.

Examples:

Request syntax with placeholder values


resp = client.set_alarm_state({
  alarm_name: "AlarmName", # required
  state_value: "OK", # required, accepts OK, ALARM, INSUFFICIENT_DATA
  state_reason: "StateReason", # required
  state_reason_data: "StateReasonData",
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :alarm_name (required, String) —

    The name of the alarm.

  • :state_value (required, String) —

    The value of the state.

  • :state_reason (required, String) —

    The reason that this alarm is set to this specific state, in text format.

  • :state_reason_data (String) —

    The reason that this alarm is set to this specific state, in JSON format.

    For SNS or EC2 alarm actions, this is just informational. But for EC2 Auto Scaling or application Auto Scaling alarm actions, the Auto Scaling policy uses the information in this field to take the correct action.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3373
3374
3375
3376
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3373

def set_alarm_state(params = {}, options = {})
  req = build_request(:set_alarm_state, params)
  req.send_request(options)
end

#start_metric_streams(params = {}) ⇒ Struct

Starts the streaming of metrics for one or more of your metric streams.

Examples:

Request syntax with placeholder values


resp = client.start_metric_streams({
  names: ["MetricStreamName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :names (required, Array<String>) —

    The array of the names of metric streams to start streaming.

    This is an "all or nothing" operation. If you do not have permission to access all of the metric streams that you list here, then none of the streams that you list in the operation will start streaming.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3400
3401
3402
3403
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3400

def start_metric_streams(params = {}, options = {})
  req = build_request(:start_metric_streams, params)
  req.send_request(options)
end

#stop_metric_streams(params = {}) ⇒ Struct

Stops the streaming of metrics for one or more of your metric streams.

Examples:

Request syntax with placeholder values


resp = client.stop_metric_streams({
  names: ["MetricStreamName"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :names (required, Array<String>) —

    The array of the names of metric streams to stop streaming.

    This is an "all or nothing" operation. If you do not have permission to access all of the metric streams that you list here, then none of the streams that you list in the operation will stop streaming.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3426
3427
3428
3429
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3426

def stop_metric_streams(params = {}, options = {})
  req = build_request(:stop_metric_streams, params)
  req.send_request(options)
end

#tag_resource(params = {}) ⇒ Struct

Assigns one or more tags (key-value pairs) to the specified CloudWatch resource. Currently, the only CloudWatch resources that can be tagged are alarms and Contributor Insights rules.

Tags can help you organize and categorize your resources. You can also use them to scope user permissions by granting a user permission to access or change only resources with certain tag values.

Tags don't have any semantic meaning to Amazon Web Services and are interpreted strictly as strings of characters.

You can use the TagResource action with an alarm that already has tags. If you specify a new tag key for the alarm, this tag is appended to the list of tags associated with the alarm. If you specify a tag key that is already associated with the alarm, the new tag value that you specify replaces the previous value for that tag.

You can associate as many as 50 tags with a CloudWatch resource.

Examples:

Request syntax with placeholder values


resp = client.tag_resource({
  resource_arn: "AmazonResourceName", # required
  tags: [ # required
    {
      key: "TagKey", # required
      value: "TagValue", # required
    },
  ],
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :resource_arn (required, String) —

    The ARN of the CloudWatch resource that you're adding tags to.

    The ARN format of an alarm is arn:aws:cloudwatch:Region:account-id:alarm:alarm-name

    The ARN format of a Contributor Insights rule is arn:aws:cloudwatch:Region:account-id:insight-rule:insight-rule-name

    For more information about ARN format, see Resource Types Defined by Amazon CloudWatch in the Amazon Web Services General Reference.

  • :tags (required, Array<Types::Tag>) —

    The list of key-value pairs to associate with the alarm.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3487
3488
3489
3490
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3487

def tag_resource(params = {}, options = {})
  req = build_request(:tag_resource, params)
  req.send_request(options)
end

#untag_resource(params = {}) ⇒ Struct

Removes one or more tags from the specified resource.

Examples:

Request syntax with placeholder values


resp = client.untag_resource({
  resource_arn: "AmazonResourceName", # required
  tag_keys: ["TagKey"], # required
})

Parameters:

  • params (Hash) (defaults to: {}) —

    ({})

Options Hash (params):

  • :resource_arn (required, String) —

    The ARN of the CloudWatch resource that you're removing tags from.

    The ARN format of an alarm is arn:aws:cloudwatch:Region:account-id:alarm:alarm-name

    The ARN format of a Contributor Insights rule is arn:aws:cloudwatch:Region:account-id:insight-rule:insight-rule-name

    For more information about ARN format, see Resource Types Defined by Amazon CloudWatch in the Amazon Web Services General Reference.

  • :tag_keys (required, Array<String>) —

    The list of tag keys to remove from the resource.

Returns:

  • (Struct) —

    Returns an empty response.

See Also:



3526
3527
3528
3529
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3526

def untag_resource(params = {}, options = {})
  req = build_request(:untag_resource, params)
  req.send_request(options)
end

#wait_until(waiter_name, params = {}, options = {}) {|w.waiter| ... } ⇒ Boolean

Polls an API operation until a resource enters a desired state.

Basic Usage

A waiter will call an API operation until:

  • It is successful
  • It enters a terminal state
  • It makes the maximum number of attempts

In between attempts, the waiter will sleep.

# polls in a loop, sleeping between attempts
client.wait_until(waiter_name, params)

Configuration

You can configure the maximum number of polling attempts, and the delay (in seconds) between each polling attempt. You can pass configuration as the final arguments hash.

# poll for ~25 seconds
client.wait_until(waiter_name, params, {
  max_attempts: 5,
  delay: 5,
})

Callbacks

You can be notified before each polling attempt and before each delay. If you throw :success or :failure from these callbacks, it will terminate the waiter.

started_at = Time.now
client.wait_until(waiter_name, params, {

  # disable max attempts
  max_attempts: nil,

  # poll for 1 hour, instead of a number of attempts
  before_wait: -> (attempts, response) do
    throw :failure if Time.now - started_at > 3600
  end
})

Handling Errors

When a waiter is unsuccessful, it will raise an error. All of the failure errors extend from Waiters::Errors::WaiterFailed.

begin
  client.wait_until(...)
rescue Aws::Waiters::Errors::WaiterFailed
  # resource did not enter the desired state in time
end

Valid Waiters

The following table lists the valid waiter names, the operations they call, and the default :delay and :max_attempts values.

waiter_name params :delay :max_attempts
alarm_exists #describe_alarms 5 40
composite_alarm_exists #describe_alarms 5 40

Parameters:

  • waiter_name (Symbol)
  • params (Hash) (defaults to: {}) —

    ({})

  • options (Hash) (defaults to: {}) —

    ({})

Options Hash (options):

  • :max_attempts (Integer)
  • :delay (Integer)
  • :before_attempt (Proc)
  • :before_wait (Proc)

Yields:

  • (w.waiter)

Returns:

  • (Boolean) —

    Returns true if the waiter was successful.

Raises:

  • (Errors::FailureStateError) —

    Raised when the waiter terminates because the waiter has entered a state that it will not transition out of, preventing success.

  • (Errors::TooManyAttemptsError) —

    Raised when the configured maximum number of attempts have been made, and the waiter is not yet successful.

  • (Errors::UnexpectedError) —

    Raised when an error is encounted while polling for a resource that is not expected.

  • (Errors::NoSuchWaiterError) —

    Raised when you request to wait for an unknown state.



3637
3638
3639
3640
3641
 
# File 'gems/aws-sdk-cloudwatch/lib/aws-sdk-cloudwatch/client.rb', line 3637

def wait_until(waiter_name, params = {}, options = {})
  w = waiter(waiter_name, options)
  yield(w.waiter) if block_given? # deprecated
  w.wait(params)
end