CfnExperimentTemplate

class aws_cdk.aws_fis.CfnExperimentTemplate(scope, id, *, description, role_arn, stop_conditions, tags, targets, actions=None, log_configuration=None)

Bases: aws_cdk.core.CfnResource

A CloudFormation AWS::FIS::ExperimentTemplate.

Specifies an experiment template.

An experiment template includes the following components:

  • Targets : A target can be a specific resource in your AWS environment, or one or more resources that match criteria that you specify, for example, resources that have specific tags.

  • Actions : The actions to carry out on the target. You can specify multiple actions, the duration of each action, and when to start each action during an experiment.

  • Stop conditions : If a stop condition is triggered while an experiment is running, the experiment is automatically stopped. You can define a stop condition as a CloudWatch alarm.

For more information, see Experiment templates in the AWS Fault Injection Simulator User Guide .

CloudformationResource

AWS::FIS::ExperimentTemplate

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

# cloud_watch_logs_configuration: Any
# s3_configuration: Any

cfn_experiment_template = fis.CfnExperimentTemplate(self, "MyCfnExperimentTemplate",
    description="description",
    role_arn="roleArn",
    stop_conditions=[fis.CfnExperimentTemplate.ExperimentTemplateStopConditionProperty(
        source="source",

        # the properties below are optional
        value="value"
    )],
    tags={
        "tags_key": "tags"
    },
    targets={
        "targets_key": fis.CfnExperimentTemplate.ExperimentTemplateTargetProperty(
            resource_type="resourceType",
            selection_mode="selectionMode",

            # the properties below are optional
            filters=[fis.CfnExperimentTemplate.ExperimentTemplateTargetFilterProperty(
                path="path",
                values=["values"]
            )],
            parameters={
                "parameters_key": "parameters"
            },
            resource_arns=["resourceArns"],
            resource_tags={
                "resource_tags_key": "resourceTags"
            }
        )
    },

    # the properties below are optional
    actions={
        "actions_key": fis.CfnExperimentTemplate.ExperimentTemplateActionProperty(
            action_id="actionId",

            # the properties below are optional
            description="description",
            parameters={
                "parameters_key": "parameters"
            },
            start_after=["startAfter"],
            targets={
                "targets_key": "targets"
            }
        )
    },
    log_configuration=fis.CfnExperimentTemplate.ExperimentTemplateLogConfigurationProperty(
        log_schema_version=123,

        # the properties below are optional
        cloud_watch_logs_configuration=cloud_watch_logs_configuration,
        s3_configuration=s3_configuration
    )
)

Create a new AWS::FIS::ExperimentTemplate.

Parameters

Methods

add_deletion_override(path)

Syntactic sugar for addOverride(path, undefined).

Parameters

path (str) – The path of the value to delete.

Return type

None

add_depends_on(target)

Indicates that this resource depends on another resource and cannot be provisioned unless the other resource has been successfully provisioned.

This can be used for resources across stacks (or nested stack) boundaries and the dependency will automatically be transferred to the relevant scope.

Parameters

target (CfnResource) –

Return type

None

add_metadata(key, value)

Add a value to the CloudFormation Resource Metadata.

Parameters
  • key (str) –

  • value (Any) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type

None

add_override(path, value)

Adds an override to the synthesized CloudFormation resource.

To add a property override, either use addPropertyOverride or prefix path with “Properties.” (i.e. Properties.TopicName).

If the override is nested, separate each nested level using a dot (.) in the path parameter. If there is an array as part of the nesting, specify the index in the path.

To include a literal . in the property name, prefix with a \. In most programming languages you will need to write this as "\\." because the \ itself will need to be escaped.

For example:

cfn_resource.add_override("Properties.GlobalSecondaryIndexes.0.Projection.NonKeyAttributes", ["myattribute"])
cfn_resource.add_override("Properties.GlobalSecondaryIndexes.1.ProjectionType", "INCLUDE")

would add the overrides Example:

"Properties": {
   "GlobalSecondaryIndexes": [
     {
       "Projection": {
         "NonKeyAttributes": [ "myattribute" ]
         ...
       }
       ...
     },
     {
       "ProjectionType": "INCLUDE"
       ...
     },
   ]
   ...
}

The value argument to addOverride will not be processed or translated in any way. Pass raw JSON values in here with the correct capitalization for CloudFormation. If you pass CDK classes or structs, they will be rendered with lowercased key names, and CloudFormation will reject the template.

Parameters
  • path (str) –

    • The path of the property, you can use dot notation to override values in complex types. Any intermdediate keys will be created as needed.

  • value (Any) –

    • The value. Could be primitive or complex.

Return type

None

add_property_deletion_override(property_path)

Adds an override that deletes the value of a property from the resource definition.

Parameters

property_path (str) – The path to the property.

Return type

None

add_property_override(property_path, value)

Adds an override to a resource property.

Syntactic sugar for addOverride("Properties.<...>", value).

Parameters
  • property_path (str) – The path of the property.

  • value (Any) – The value.

Return type

None

apply_removal_policy(policy=None, *, apply_to_update_replace_policy=None, default=None)

Sets the deletion policy of the resource based on the removal policy specified.

The Removal Policy controls what happens to this resource when it stops being managed by CloudFormation, either because you’ve removed it from the CDK application or because you’ve made a change that requires the resource to be replaced.

The resource can be deleted (RemovalPolicy.DESTROY), or left in your AWS account for data recovery and cleanup later (RemovalPolicy.RETAIN).

Parameters
  • policy (Optional[RemovalPolicy]) –

  • apply_to_update_replace_policy (Optional[bool]) – Apply the same deletion policy to the resource’s “UpdateReplacePolicy”. Default: true

  • default (Optional[RemovalPolicy]) – The default policy to apply in case the removal policy is not defined. Default: - Default value is resource specific. To determine the default value for a resoure, please consult that specific resource’s documentation.

Return type

None

get_att(attribute_name)

Returns a token for an runtime attribute of this resource.

Ideally, use generated attribute accessors (e.g. resource.arn), but this can be used for future compatibility in case there is no generated attribute.

Parameters

attribute_name (str) – The name of the attribute.

Return type

Reference

get_metadata(key)

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters

key (str) –

See

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/metadata-section-structure.html

Note that this is a different set of metadata from CDK node metadata; this metadata ends up in the stack template under the resource, whereas CDK node metadata ends up in the Cloud Assembly.

Return type

Any

inspect(inspector)

Examines the CloudFormation resource and discloses attributes.

Parameters

inspector (TreeInspector) –

  • tree inspector to collect and process attributes.

Return type

None

override_logical_id(new_logical_id)

Overrides the auto-generated logical ID with a specific ID.

Parameters

new_logical_id (str) – The new logical ID to use for this stack element.

Return type

None

to_string()

Returns a string representation of this construct.

Return type

str

Returns

a string representation of this resource

Attributes

CFN_RESOURCE_TYPE_NAME = 'AWS::FIS::ExperimentTemplate'
actions

The actions for the experiment.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-actions

Return type

Union[IResolvable, Mapping[str, Union[IResolvable, ExperimentTemplateActionProperty]], None]

attr_id

The ID of the experiment template.

CloudformationAttribute

Id

Return type

str

cfn_options

Options for this resource, such as condition, update policy etc.

Return type

ICfnResourceOptions

cfn_resource_type

AWS resource type.

Return type

str

creation_stack

return:

the stack trace of the point where this Resource was created from, sourced from the +metadata+ entry typed +aws:cdk:logicalId+, and with the bottom-most node +internal+ entries filtered.

Return type

List[str]

description

A description for the experiment template.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-description

Return type

str

log_configuration

The configuration for experiment logging.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-logconfiguration

Return type

Union[IResolvable, ExperimentTemplateLogConfigurationProperty, None]

logical_id

The logical ID for this CloudFormation stack element.

The logical ID of the element is calculated from the path of the resource node in the construct tree.

To override this value, use overrideLogicalId(newLogicalId).

Return type

str

Returns

the logical ID as a stringified token. This value will only get resolved during synthesis.

node

The construct tree node associated with this construct.

Return type

ConstructNode

ref

Return a string that will be resolved to a CloudFormation { Ref } for this element.

If, by any chance, the intrinsic reference of a resource is not a string, you could coerce it to an IResolvable through Lazy.any({ produce: resource.ref }).

Return type

str

role_arn

The Amazon Resource Name (ARN) of an IAM role that grants the AWS FIS service permission to perform service actions on your behalf.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-rolearn

Return type

str

stack

The stack in which this element is defined.

CfnElements must be defined within a stack scope (directly or indirectly).

Return type

Stack

stop_conditions

The stop conditions.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-stopconditions

Return type

Union[IResolvable, List[Union[ExperimentTemplateStopConditionProperty, IResolvable]]]

tags

The tags to apply to the experiment template.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-tags

Return type

TagManager

targets

The targets for the experiment.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-fis-experimenttemplate.html#cfn-fis-experimenttemplate-targets

Return type

Union[IResolvable, Mapping[str, Union[IResolvable, ExperimentTemplateTargetProperty]]]

Static Methods

classmethod is_cfn_element(x)

Returns true if a construct is a stack element (i.e. part of the synthesized cloudformation template).

Uses duck-typing instead of instanceof to allow stack elements from different versions of this library to be included in the same stack.

Parameters

x (Any) –

Return type

bool

Returns

The construct as a stack element or undefined if it is not a stack element.

classmethod is_cfn_resource(construct)

Check whether the given construct is a CfnResource.

Parameters

construct (IConstruct) –

Return type

bool

classmethod is_construct(x)

Return whether the given object is a Construct.

Parameters

x (Any) –

Return type

bool

ExperimentTemplateActionProperty

class CfnExperimentTemplate.ExperimentTemplateActionProperty(*, action_id, description=None, parameters=None, start_after=None, targets=None)

Bases: object

Specifies an action for an experiment template.

For more information, see Actions in the AWS Fault Injection Simulator User Guide .

Parameters
  • action_id (str) – The ID of the action. The format of the action ID is: aws: service-name : action-type .

  • description (Optional[str]) – A description for the action.

  • parameters (Union[IResolvable, Mapping[str, str], None]) – The parameters for the action, if applicable.

  • start_after (Optional[Sequence[str]]) – The name of the action that must be completed before the current action starts. Omit this parameter to run the action at the start of the experiment.

  • targets (Union[IResolvable, Mapping[str, str], None]) – The targets for the action.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

experiment_template_action_property = fis.CfnExperimentTemplate.ExperimentTemplateActionProperty(
    action_id="actionId",

    # the properties below are optional
    description="description",
    parameters={
        "parameters_key": "parameters"
    },
    start_after=["startAfter"],
    targets={
        "targets_key": "targets"
    }
)

Attributes

action_id

The ID of the action.

The format of the action ID is: aws: service-name : action-type .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html#cfn-fis-experimenttemplate-experimenttemplateaction-actionid

Return type

str

description

A description for the action.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html#cfn-fis-experimenttemplate-experimenttemplateaction-description

Return type

Optional[str]

parameters

The parameters for the action, if applicable.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html#cfn-fis-experimenttemplate-experimenttemplateaction-parameters

Return type

Union[IResolvable, Mapping[str, str], None]

start_after

The name of the action that must be completed before the current action starts.

Omit this parameter to run the action at the start of the experiment.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html#cfn-fis-experimenttemplate-experimenttemplateaction-startafter

Return type

Optional[List[str]]

targets

The targets for the action.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplateaction.html#cfn-fis-experimenttemplate-experimenttemplateaction-targets

Return type

Union[IResolvable, Mapping[str, str], None]

ExperimentTemplateLogConfigurationProperty

class CfnExperimentTemplate.ExperimentTemplateLogConfigurationProperty(*, log_schema_version, cloud_watch_logs_configuration=None, s3_configuration=None)

Bases: object

Specifies the configuration for experiment logging.

Parameters
  • log_schema_version (Union[int, float]) – The schema version. The supported value is 1.

  • cloud_watch_logs_configuration (Optional[Any]) – The configuration for experiment logging to Amazon CloudWatch Logs. The supported field is LogGroupArn . For example:. {"LogGroupArn": "aws:arn:logs: *region_name* : *account_id* :log-group: *log_group_name* "}

  • s3_configuration (Optional[Any]) – The configuration for experiment logging to Amazon S3. The following fields are supported:. - bucketName - The name of the destination bucket. - prefix - An optional bucket prefix. For example: {"BucketName": " *my-s3-bucket* ", "Prefix": " *log-folder* "}

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatelogconfiguration.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

# cloud_watch_logs_configuration: Any
# s3_configuration: Any

experiment_template_log_configuration_property = fis.CfnExperimentTemplate.ExperimentTemplateLogConfigurationProperty(
    log_schema_version=123,

    # the properties below are optional
    cloud_watch_logs_configuration=cloud_watch_logs_configuration,
    s3_configuration=s3_configuration
)

Attributes

cloud_watch_logs_configuration

.

{"LogGroupArn": "aws:arn:logs: *region_name* : *account_id* :log-group: *log_group_name* "}

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatelogconfiguration.html#cfn-fis-experimenttemplate-experimenttemplatelogconfiguration-cloudwatchlogsconfiguration

Type

The configuration for experiment logging to Amazon CloudWatch Logs. The supported field is LogGroupArn . For example

Return type

Any

log_schema_version

The schema version.

The supported value is 1.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatelogconfiguration.html#cfn-fis-experimenttemplate-experimenttemplatelogconfiguration-logschemaversion

Return type

Union[int, float]

s3_configuration

.

  • bucketName - The name of the destination bucket.

  • prefix - An optional bucket prefix.

For example:

{"BucketName": " *my-s3-bucket* ", "Prefix": " *log-folder* "}

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatelogconfiguration.html#cfn-fis-experimenttemplate-experimenttemplatelogconfiguration-s3configuration

Type

The configuration for experiment logging to Amazon S3. The following fields are supported

Return type

Any

ExperimentTemplateStopConditionProperty

class CfnExperimentTemplate.ExperimentTemplateStopConditionProperty(*, source, value=None)

Bases: object

Specifies a stop condition for an experiment template.

Parameters
  • source (str) – The source for the stop condition. Specify aws:cloudwatch:alarm if the stop condition is defined by a CloudWatch alarm. Specify none if there is no stop condition.

  • value (Optional[str]) – The Amazon Resource Name (ARN) of the CloudWatch alarm. This is required if the source is a CloudWatch alarm.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatestopcondition.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

experiment_template_stop_condition_property = fis.CfnExperimentTemplate.ExperimentTemplateStopConditionProperty(
    source="source",

    # the properties below are optional
    value="value"
)

Attributes

source

The source for the stop condition.

Specify aws:cloudwatch:alarm if the stop condition is defined by a CloudWatch alarm. Specify none if there is no stop condition.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatestopcondition.html#cfn-fis-experimenttemplate-experimenttemplatestopcondition-source

Return type

str

value

The Amazon Resource Name (ARN) of the CloudWatch alarm.

This is required if the source is a CloudWatch alarm.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatestopcondition.html#cfn-fis-experimenttemplate-experimenttemplatestopcondition-value

Return type

Optional[str]

ExperimentTemplateTargetFilterProperty

class CfnExperimentTemplate.ExperimentTemplateTargetFilterProperty(*, path, values)

Bases: object

Specifies a filter used for the target resource input in an experiment template.

For more information, see Resource filters in the AWS Fault Injection Simulator User Guide .

Parameters
  • path (str) – The attribute path for the filter.

  • values (Sequence[str]) – The attribute values for the filter.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetargetfilter.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

experiment_template_target_filter_property = fis.CfnExperimentTemplate.ExperimentTemplateTargetFilterProperty(
    path="path",
    values=["values"]
)

Attributes

path

The attribute path for the filter.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetargetfilter.html#cfn-fis-experimenttemplate-experimenttemplatetargetfilter-path

Return type

str

values

The attribute values for the filter.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetargetfilter.html#cfn-fis-experimenttemplate-experimenttemplatetargetfilter-values

Return type

List[str]

ExperimentTemplateTargetProperty

class CfnExperimentTemplate.ExperimentTemplateTargetProperty(*, resource_type, selection_mode, filters=None, parameters=None, resource_arns=None, resource_tags=None)

Bases: object

Specifies a target for an experiment.

You must specify at least one Amazon Resource Name (ARN) or at least one resource tag. You cannot specify both ARNs and tags.

For more information, see Targets in the AWS Fault Injection Simulator User Guide .

Parameters
  • resource_type (str) – The resource type. The resource type must be supported for the specified action.

  • selection_mode (str) – Scopes the identified resources to a specific count of the resources at random, or a percentage of the resources. All identified resources are included in the target. - ALL - Run the action on all identified targets. This is the default. - COUNT(n) - Run the action on the specified number of targets, chosen from the identified targets at random. For example, COUNT(1) selects one of the targets. - PERCENT(n) - Run the action on the specified percentage of targets, chosen from the identified targets at random. For example, PERCENT(25) selects 25% of the targets.

  • filters (Union[IResolvable, Sequence[Union[IResolvable, ExperimentTemplateTargetFilterProperty]], None]) – The filters to apply to identify target resources using specific attributes.

  • parameters (Union[IResolvable, Mapping[str, str], None]) – The parameters for the resource type.

  • resource_arns (Optional[Sequence[str]]) – The Amazon Resource Names (ARNs) of the resources.

  • resource_tags (Union[IResolvable, Mapping[str, str], None]) – The tags for the target resources.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html

ExampleMetadata

fixture=_generated

Example:

# The code below shows an example of how to instantiate this type.
# The values are placeholders you should change.
import aws_cdk.aws_fis as fis

experiment_template_target_property = fis.CfnExperimentTemplate.ExperimentTemplateTargetProperty(
    resource_type="resourceType",
    selection_mode="selectionMode",

    # the properties below are optional
    filters=[fis.CfnExperimentTemplate.ExperimentTemplateTargetFilterProperty(
        path="path",
        values=["values"]
    )],
    parameters={
        "parameters_key": "parameters"
    },
    resource_arns=["resourceArns"],
    resource_tags={
        "resource_tags_key": "resourceTags"
    }
)

Attributes

filters

The filters to apply to identify target resources using specific attributes.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-filters

Return type

Union[IResolvable, List[Union[IResolvable, ExperimentTemplateTargetFilterProperty]], None]

parameters

The parameters for the resource type.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-parameters

Return type

Union[IResolvable, Mapping[str, str], None]

resource_arns

The Amazon Resource Names (ARNs) of the resources.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-resourcearns

Return type

Optional[List[str]]

resource_tags

The tags for the target resources.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-resourcetags

Return type

Union[IResolvable, Mapping[str, str], None]

resource_type

The resource type.

The resource type must be supported for the specified action.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-resourcetype

Return type

str

selection_mode

Scopes the identified resources to a specific count of the resources at random, or a percentage of the resources.

All identified resources are included in the target.

  • ALL - Run the action on all identified targets. This is the default.

  • COUNT(n) - Run the action on the specified number of targets, chosen from the identified targets at random. For example, COUNT(1) selects one of the targets.

  • PERCENT(n) - Run the action on the specified percentage of targets, chosen from the identified targets at random. For example, PERCENT(25) selects 25% of the targets.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-fis-experimenttemplate-experimenttemplatetarget.html#cfn-fis-experimenttemplate-experimenttemplatetarget-selectionmode

Return type

str