CfnListener

class aws_cdk.aws_vpclattice.CfnListener(scope, id, *, default_action, protocol, name=None, port=None, service_identifier=None, tags=None)

Bases: CfnResource

Creates a listener for a service.

Before you start using your Amazon VPC Lattice service, you must add one or more listeners. A listener is a process that checks for connection requests to your services. For more information, see Listeners in the Amazon VPC Lattice User Guide .

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-resource-vpclattice-listener.html
CloudformationResource:: AWS::VpcLattice::Listener
ExampleMetadata:: fixture=_generated

Example:

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

cfn_listener = vpclattice.CfnListener(self, "MyCfnListener",
    default_action=vpclattice.CfnListener.DefaultActionProperty(
        fixed_response=vpclattice.CfnListener.FixedResponseProperty(
            status_code=123
        ),
        forward=vpclattice.CfnListener.ForwardProperty(
            target_groups=[vpclattice.CfnListener.WeightedTargetGroupProperty(
                target_group_identifier="targetGroupIdentifier",

                # the properties below are optional
                weight=123
            )]
        )
    ),
    protocol="protocol",

    # the properties below are optional
    name="name",
    port=123,
    service_identifier="serviceIdentifier",
    tags=[CfnTag(
        key="key",
        value="value"
    )]
)

Parameters:

scope (Construct) – Scope in which this resource is defined.
id (str) – Construct identifier for this resource (unique in its scope).
default_action (Union[IResolvable, DefaultActionProperty, Dict[str, Any]]) – The action for the default rule. Each listener has a default rule. The default rule is used if no other rules match.
protocol (str) – The listener protocol.
name (Optional[str]) – The name of the listener. A listener name must be unique within a service. The valid characters are a-z, 0-9, and hyphens (-). You can’t use a hyphen as the first or last character, or immediately after another hyphen. If you don’t specify a name, CloudFormation generates one. However, if you specify a name, and later want to replace the resource, you must specify a new name.
port (Union[int, float, None]) – The listener port. You can specify a value from 1 to 65535. For HTTP, the default is 80. For HTTPS, the default is 443.
service_identifier (Optional[str]) – The ID or Amazon Resource Name (ARN) of the service.
tags (Optional[Sequence[Union[CfnTag, Dict[str, Any]]]]) – The tags for the listener.

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_dependency(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_depends_on(target)

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

Parameters:

target (CfnResource) –

Deprecated:

use addDependency

Stability:

deprecated

Return type:

None

add_metadata(key, value)

Add a value to the CloudFormation Resource Metadata.

Parameters:

key (str) –
value (Any) –

See:

Return type:

None

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.

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 intermediate 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). In some cases, a snapshot can be taken of the resource prior to deletion (RemovalPolicy.SNAPSHOT). A list of resources that support this policy can be found in the following link:

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 resource, please consult that specific resource’s documentation.

See:

https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-attribute-deletionpolicy.html#aws-attribute-deletionpolicy-options

Return type:

None

get_att(attribute_name, type_hint=None)

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.
type_hint (Optional[ResolutionTypeHint]) –

Return type:

Reference

get_metadata(key)

Retrieve a value value from the CloudFormation Resource Metadata.

Parameters:

key (str) –

See:

Return type:

Any

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.

inspect(inspector)

Examines the CloudFormation resource and discloses attributes.

Parameters:: inspector (TreeInspector) – tree inspector to collect and process attributes.
Return type:: None

obtain_dependencies()

Retrieves an array of resources this resource depends on.

This assembles dependencies on resources across stacks (including nested stacks) automatically.

Return type:: List[Union[Stack, CfnResource]]

obtain_resource_dependencies()

Get a shallow copy of dependencies between this resource and other resources in the same stack.

Return type:: List[CfnResource]

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

remove_dependency(target)

Indicates that this resource no longer depends on another resource.

This can be used for resources across stacks (including nested stacks) and the dependency will automatically be removed from the relevant scope.

Parameters:

target (CfnResource) –

Return type:

None

replace_dependency(target, new_target)

Replaces one dependency with another.

Parameters:

target (CfnResource) – The dependency to replace.
new_target (CfnResource) – The new dependency to add.

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::VpcLattice::Listener'

attr_arn

The Amazon Resource Name (ARN) of the listener.

CloudformationAttribute:: Arn

attr_id

The ID of the listener.

CloudformationAttribute:: Id

attr_service_arn

The Amazon Resource Name (ARN) of the service.

CloudformationAttribute:: ServiceArn

attr_service_id

The ID of the service.

CloudformationAttribute:: ServiceId

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

cfn_resource_type: AWS resource type.

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.

default_action: The action for the default rule.

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).

Returns:

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

name: The name of the listener.

node: The tree node.

port: The listener port.

protocol: The listener protocol.

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 }).

service_identifier: The ID or Amazon Resource Name (ARN) of the service.

stack

The stack in which this element is defined.

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

tags: Tag Manager which manages the tags for this resource.

tags_raw: The tags for the listener.

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(x)

Check whether the given object is a CfnResource.

Parameters:

x (Any) –

Return type:

bool

classmethod is_construct(x)

Checks if x is a construct.

Use this method instead of instanceof to properly detect Construct instances, even when the construct library is symlinked.

Explanation: in JavaScript, multiple copies of the constructs library on disk are seen as independent, completely different libraries. As a consequence, the class Construct in each copy of the constructs library is seen as a different class, and an instance of one class will not test as instanceof the other class. npm install will not create installations like this, but users may manually symlink construct libraries together or use a monorepo tool: in those cases, multiple copies of the constructs library can be accidentally installed, and instanceof will behave unpredictably. It is safest to avoid using instanceof, and using this type-testing method instead.

Parameters:: x (Any) – Any object.
Return type:: bool
Returns:: true if x is an object created from a class which extends Construct.

DefaultActionProperty

class CfnListener.DefaultActionProperty(*, fixed_response=None, forward=None)

Bases: object

The action for the default rule.

Each listener has a default rule. The default rule is used if no other rules match.

Parameters:

fixed_response (Union[IResolvable, FixedResponseProperty, Dict[str, Any], None]) – Describes an action that returns a custom HTTP response.
forward (Union[IResolvable, ForwardProperty, Dict[str, Any], None]) – Describes a forward action. You can use forward actions to route requests to one or more target groups.

See:

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-defaultaction.html

ExampleMetadata:

fixture=_generated

Example:

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

default_action_property = vpclattice.CfnListener.DefaultActionProperty(
    fixed_response=vpclattice.CfnListener.FixedResponseProperty(
        status_code=123
    ),
    forward=vpclattice.CfnListener.ForwardProperty(
        target_groups=[vpclattice.CfnListener.WeightedTargetGroupProperty(
            target_group_identifier="targetGroupIdentifier",

            # the properties below are optional
            weight=123
        )]
    )
)

Attributes

fixed_response

Describes an action that returns a custom HTTP response.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-defaultaction.html#cfn-vpclattice-listener-defaultaction-fixedresponse

forward

Describes a forward action.

You can use forward actions to route requests to one or more target groups.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-defaultaction.html#cfn-vpclattice-listener-defaultaction-forward

FixedResponseProperty

class CfnListener.FixedResponseProperty(*, status_code)

Bases: object

Describes an action that returns a custom HTTP response.

Parameters:: status_code (Union[int, float]) – The HTTP response code.
See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-fixedresponse.html
ExampleMetadata:: fixture=_generated

Example:

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

fixed_response_property = vpclattice.CfnListener.FixedResponseProperty(
    status_code=123
)

Attributes

status_code

The HTTP response code.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-fixedresponse.html#cfn-vpclattice-listener-fixedresponse-statuscode

ForwardProperty

class CfnListener.ForwardProperty(*, target_groups)

Bases: object

The forward action.

Traffic that matches the rule is forwarded to the specified target groups.

Parameters:: target_groups (Union[IResolvable, Sequence[Union[IResolvable, WeightedTargetGroupProperty, Dict[str, Any]]]]) – The target groups. Traffic matching the rule is forwarded to the specified target groups. With forward actions, you can assign a weight that controls the prioritization and selection of each target group. This means that requests are distributed to individual target groups based on their weights. For example, if two target groups have the same weight, each target group receives half of the traffic. The default value is 1. This means that if only one target group is provided, there is no need to set the weight; 100% of the traffic goes to that target group.
See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-forward.html
ExampleMetadata:: fixture=_generated

Example:

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

forward_property = vpclattice.CfnListener.ForwardProperty(
    target_groups=[vpclattice.CfnListener.WeightedTargetGroupProperty(
        target_group_identifier="targetGroupIdentifier",

        # the properties below are optional
        weight=123
    )]
)

Attributes

target_groups

The target groups.

Traffic matching the rule is forwarded to the specified target groups. With forward actions, you can assign a weight that controls the prioritization and selection of each target group. This means that requests are distributed to individual target groups based on their weights. For example, if two target groups have the same weight, each target group receives half of the traffic.

The default value is 1. This means that if only one target group is provided, there is no need to set the weight; 100% of the traffic goes to that target group.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-forward.html#cfn-vpclattice-listener-forward-targetgroups

WeightedTargetGroupProperty

class CfnListener.WeightedTargetGroupProperty(*, target_group_identifier, weight=None)

Bases: object

Describes the weight of a target group.

Parameters:

target_group_identifier (str) – The ID of the target group.
weight (Union[int, float, None]) – Only required if you specify multiple target groups for a forward action. The weight determines how requests are distributed to the target group. For example, if you specify two target groups, each with a weight of 10, each target group receives half the requests. If you specify two target groups, one with a weight of 10 and the other with a weight of 20, the target group with a weight of 20 receives twice as many requests as the other target group. If there’s only one target group specified, then the default value is 100.

See:

http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-weightedtargetgroup.html

ExampleMetadata:

fixture=_generated

Example:

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

weighted_target_group_property = vpclattice.CfnListener.WeightedTargetGroupProperty(
    target_group_identifier="targetGroupIdentifier",

    # the properties below are optional
    weight=123
)

Attributes

target_group_identifier

The ID of the target group.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-weightedtargetgroup.html#cfn-vpclattice-listener-weightedtargetgroup-targetgroupidentifier

weight

Only required if you specify multiple target groups for a forward action.

The weight determines how requests are distributed to the target group. For example, if you specify two target groups, each with a weight of 10, each target group receives half the requests. If you specify two target groups, one with a weight of 10 and the other with a weight of 20, the target group with a weight of 20 receives twice as many requests as the other target group. If there’s only one target group specified, then the default value is 100.

See:: http://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-vpclattice-listener-weightedtargetgroup.html#cfn-vpclattice-listener-weightedtargetgroup-weight