CfnRateBasedRule

class aws_cdk.aws_wafregional.CfnRateBasedRule(scope, id, *, metric_name, name, rate_key, rate_limit, match_predicates=None)

Bases: aws_cdk.core.CfnResource

A CloudFormation AWS::WAFRegional::RateBasedRule.

This is AWS WAF Classic documentation. For more information, see AWS WAF Classic in the developer guide.

For the latest version of AWS WAF , use the AWS WAF V2 API and see the AWS WAF Developer Guide . With the latest version, AWS WAF has a single set of endpoints for regional and global use.

A RateBasedRule is identical to a regular Rule , with one addition: a RateBasedRule counts the number of requests that arrive from a specified IP address every five minutes. For example, based on recent requests that you’ve seen from an attacker, you might create a RateBasedRule that includes the following conditions:

  • The requests come from 192.0.2.44.

  • They contain the value BadBot in the User-Agent header.

In the rule, you also define the rate limit as 15,000.

Requests that meet both of these conditions and exceed 15,000 requests every five minutes trigger the rule’s action (block or count), which is defined in the web ACL.

Note you can only create rate-based rules using an AWS CloudFormation template. To add the rate-based rules created through AWS CloudFormation to a web ACL, use the AWS WAF console, API, or command line interface (CLI). For more information, see UpdateWebACL .

CloudformationResource

AWS::WAFRegional::RateBasedRule

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.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_wafregional as wafregional

cfn_rate_based_rule = wafregional.CfnRateBasedRule(self, "MyCfnRateBasedRule",
    metric_name="metricName",
    name="name",
    rate_key="rateKey",
    rate_limit=123,

    # the properties below are optional
    match_predicates=[wafregional.CfnRateBasedRule.PredicateProperty(
        data_id="dataId",
        negated=False,
        type="type"
    )]
)

Create a new AWS::WAFRegional::RateBasedRule.

Parameters
  • scope (Construct) –

    • scope in which this resource is defined.

  • id (str) –

    • scoped id of the resource.

  • metric_name (str) – A name for the metrics for a RateBasedRule . The name can contain only alphanumeric characters (A-Z, a-z, 0-9), with maximum length 128 and minimum length one. It can’t contain whitespace or metric names reserved for AWS WAF , including “All” and “Default_Action.” You can’t change the name of the metric after you create the RateBasedRule .

  • name (str) – A friendly name or description for a RateBasedRule . You can’t change the name of a RateBasedRule after you create it.

  • rate_key (str) – The field that AWS WAF uses to determine if requests are likely arriving from single source and thus subject to rate monitoring. The only valid value for RateKey is IP . IP indicates that requests arriving from the same IP address are subject to the RateLimit that is specified in the RateBasedRule .

  • rate_limit (Union[int, float]) – The maximum number of requests, which have an identical value in the field specified by the RateKey , allowed in a five-minute period. If the number of requests exceeds the RateLimit and the other predicates specified in the rule are also met, AWS WAF triggers the action that is specified for this rule.

  • match_predicates (Union[IResolvable, Sequence[Union[IResolvable, PredicateProperty, Dict[str, Any]]], None]) – The Predicates object contains one Predicate element for each ByteMatchSet , IPSet , or SqlInjectionMatchSet> object that you want to include in a RateBasedRule .

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::WAFRegional::RateBasedRule'
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]

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.

match_predicates

The Predicates object contains one Predicate element for each ByteMatchSet , IPSet , or SqlInjectionMatchSet> object that you want to include in a RateBasedRule .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.html#cfn-wafregional-ratebasedrule-matchpredicates

Return type

Union[IResolvable, List[Union[IResolvable, PredicateProperty]], None]

metric_name

A name for the metrics for a RateBasedRule .

The name can contain only alphanumeric characters (A-Z, a-z, 0-9), with maximum length 128 and minimum length one. It can’t contain whitespace or metric names reserved for AWS WAF , including “All” and “Default_Action.” You can’t change the name of the metric after you create the RateBasedRule .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.html#cfn-wafregional-ratebasedrule-metricname

Return type

str

name

A friendly name or description for a RateBasedRule .

You can’t change the name of a RateBasedRule after you create it.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.html#cfn-wafregional-ratebasedrule-name

Return type

str

node

The construct tree node associated with this construct.

Return type

ConstructNode

rate_key

The field that AWS WAF uses to determine if requests are likely arriving from single source and thus subject to rate monitoring.

The only valid value for RateKey is IP . IP indicates that requests arriving from the same IP address are subject to the RateLimit that is specified in the RateBasedRule .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.html#cfn-wafregional-ratebasedrule-ratekey

Return type

str

rate_limit

The maximum number of requests, which have an identical value in the field specified by the RateKey , allowed in a five-minute period.

If the number of requests exceeds the RateLimit and the other predicates specified in the rule are also met, AWS WAF triggers the action that is specified for this rule.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-wafregional-ratebasedrule.html#cfn-wafregional-ratebasedrule-ratelimit

Return type

Union[int, float]

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

stack

The stack in which this element is defined.

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

Return type

Stack

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

PredicateProperty

class CfnRateBasedRule.PredicateProperty(*, data_id, negated, type)

Bases: object

Specifies the ByteMatchSet , IPSet , SqlInjectionMatchSet , XssMatchSet , RegexMatchSet , GeoMatchSet , and SizeConstraintSet objects that you want to add to a Rule and, for each object, indicates whether you want to negate the settings, for example, requests that do NOT originate from the IP address 192.0.2.44.

Parameters
  • data_id (str) – A unique identifier for a predicate in a Rule , such as ByteMatchSetId or IPSetId . The ID is returned by the corresponding Create or List command.

  • negated (Union[bool, IResolvable]) – Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet , IPSet , SqlInjectionMatchSet , XssMatchSet , RegexMatchSet , GeoMatchSet , or SizeConstraintSet . For example, if an IPSet includes the IP address 192.0.2.44 , AWS WAF will allow or block requests based on that IP address. Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet , IPSet , SqlInjectionMatchSet , XssMatchSet , RegexMatchSet , GeoMatchSet , or SizeConstraintSet >. For example, if an IPSet includes the IP address 192.0.2.44 , AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44 .

  • type (str) – The type of predicate in a Rule , such as ByteMatch or IPSet .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-wafregional-ratebasedrule-predicate.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_wafregional as wafregional

predicate_property = wafregional.CfnRateBasedRule.PredicateProperty(
    data_id="dataId",
    negated=False,
    type="type"
)

Attributes

data_id

A unique identifier for a predicate in a Rule , such as ByteMatchSetId or IPSetId .

The ID is returned by the corresponding Create or List command.

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-wafregional-ratebasedrule-predicate.html#cfn-wafregional-ratebasedrule-predicate-dataid

Return type

str

negated

Set Negated to False if you want AWS WAF to allow, block, or count requests based on the settings in the specified ByteMatchSet , IPSet , SqlInjectionMatchSet , XssMatchSet , RegexMatchSet , GeoMatchSet , or SizeConstraintSet .

For example, if an IPSet includes the IP address 192.0.2.44 , AWS WAF will allow or block requests based on that IP address.

Set Negated to True if you want AWS WAF to allow or block a request based on the negation of the settings in the ByteMatchSet , IPSet , SqlInjectionMatchSet , XssMatchSet , RegexMatchSet , GeoMatchSet , or SizeConstraintSet >. For example, if an IPSet includes the IP address 192.0.2.44 , AWS WAF will allow, block, or count requests based on all IP addresses except 192.0.2.44 .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-wafregional-ratebasedrule-predicate.html#cfn-wafregional-ratebasedrule-predicate-negated

Return type

Union[bool, IResolvable]

type

The type of predicate in a Rule , such as ByteMatch or IPSet .

Link

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-wafregional-ratebasedrule-predicate.html#cfn-wafregional-ratebasedrule-predicate-type

Return type

str