runway.cfngin.hooks.base module

Base class for CFNgin hooks.

class runway.cfngin.hooks.base.HookArgsBaseModel[source]

Bases: runway.utils.BaseModel

Base model for hook args.

__contains__(name: object) → bool

Implement evaluation of ‘in’ conditional.

Parameters: name – The name to check for existence in the model.

__getitem__(name: str) → Any

Implement evaluation of self[name].

Parameters: name – Attribute name to return the value for.
Returns: The value associated with the provided name/attribute name.
Raises: AttributeError – If attribute does not exist on this object.

__init__(**data: Any) → None

Create a new model by parsing and validating input data from keyword arguments.

Raises ValidationError if the input data cannot be parsed to form a valid model.

__iter__() → TupleGenerator: so dict(model) works

__new__(**kwargs)

__pretty__(fmt: Callable[[Any], Any], **kwargs: Any) → Generator[Any, None, None]: Used by devtools (https://python-devtools.helpmanual.io/) to provide a human readable representations of objects

__repr_name__() → unicode: Name of the instance’s class, used in __repr__.

__rich_repr__() → RichReprResult: Get fields for Rich library

__setitem__(name: str, value: Any) → None

Implement item assignment (e.g. self[name] = value).

Parameters

name – Attribute name to set.
value – Value to assign to the attribute.

classmethod __try_update_forward_refs__(**localns: Any) → None: Same as update_forward_refs but will not raise exception when forward references are not defined.

classmethod construct(_fields_set: Optional[SetStr] = None, **values: Any) → Model: Creates a new model setting __dict__ and __fields_set__ from trusted or pre-validated data. Default values are respected, but no other validation is performed. Behaves as if Config.extra = ‘allow’ was set since it adds all passed values

copy(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, update: Optional[DictStrAny] = None, deep: bool = False) → Model

Duplicate a model, optionally choose which fields to include, exclude and change.

Parameters

include – fields to include in new model
exclude – fields to exclude from new model, as with values this takes precedence over include
update – values to change/add in the new model. Note: the data is not validated before creating the new model: you should trust this data
deep – set to True to make a deep copy of the model

Returns

new model instance

dict(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False) → DictStrAny: Generate a dictionary representation of the model, optionally specifying which fields to include or exclude.

get(name: str, default: Optional[Any] = None) → Any

Safely get the value of an attribute.

Parameters

name – Attribute name to return the value for.
default – Value to return if attribute is not found.

json(*, include: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, exclude: Optional[Union[AbstractSetIntStr, MappingIntStrAny]] = None, by_alias: bool = False, skip_defaults: Optional[bool] = None, exclude_unset: bool = False, exclude_defaults: bool = False, exclude_none: bool = False, encoder: Optional[Callable[[Any], Any]] = None, models_as_dict: bool = True, **dumps_kwargs: Any) → unicode

Generate a JSON representation of the model, include and exclude arguments as per dict().

encoder is an optional function to supply as default to json.dumps(), other arguments as per json.dumps().

classmethod update_forward_refs(**localns: Any) → None: Try to update ForwardRefs on fields based on this Model, globalns and localns.

class runway.cfngin.hooks.base.Hook[source]

Bases: runway.cfngin.hooks.protocols.CfnginHookProtocol

Base class for hooks.

Not all hooks need to be classes and not all classes need to be hooks.

args

Keyword arguments passed to the hook, loaded into a MutableMap object.

Type: HookArgsBaseModel

blueprint

Blueprint generated by the hook if it will be deploying a stack.

Type: Optional[Blueprint]

context

Context instance. (passed in by CFNgin)

Type: CfnginContext

provider Provider instance.

Type: passed in by CFNgin

stack

Stack object if the hook deploys a stack.

Type: Optional[Stack]

stack_name

Name of the stack created by the hook if a stack is to be created.

Type: str

ARGS_PARSER

Class used to parse arguments passed to the hook.

alias of runway.cfngin.hooks.base.HookArgsBaseModel

__init__(context: CfnginContext, provider: Provider, **kwargs: Any) → None[source]

Instantiate class.

Parameters

context – Context instance. (passed in by CFNgin)
provider – Provider instance. (passed in by CFNgin)

property tags: troposphere.Tags: Return tags that should be applied to any resource being created.

generate_stack(**kwargs: Any) → runway.cfngin.stack.Stack[source]: Create a CFNgin Stack object.

get_template_description(suffix: Optional[str] = None) → str[source]

Generate a template description.

Parameters: suffix – Suffix to append to the end of a CloudFormation template description.

deploy_stack(stack: Optional[Stack] = None, wait: bool = False) → Status[source]

Deploy a stack.

Parameters

stack – A stack to act on.
wait – Wither to wait for the stack to complete before returning.

Returns

Ending status of the stack.

destroy_stack(stack: Optional[Stack] = None, wait: bool = False) → Status[source]

Destroy a stack.

Parameters

stack – A stack to act on.
wait – Wither to wait for the stack to complete before returning.

Returns

Ending status of the stack.

post_deploy() → Any[source]: Run during the post_deploy stage.

post_destroy() → Any[source]: Run during the post_destroy stage.

pre_deploy() → Any[source]: Run during the pre_deploy stage.

pre_destroy() → Any[source]: Run during the pre_destroy stage.

__new__(**kwargs)

class runway.cfngin.hooks.base.HookDeployAction[source]

Bases: runway.cfngin.actions.deploy.Action

Deploy action that can be used from hooks.

__init__(context: CfnginContext, provider: Provider)[source]

Instantiate class.

Parameters

context – The context for the current run.
provider – The provider instance.

property provider: Provider: Override the inherited property to return the local provider.

__new__(**kwargs)

static build_parameters(stack: Stack, provider_stack: Optional[StackTypeDef] = None) → List[ParameterTypeDef]

Build the CloudFormation Parameters for our stack.

Parameters

stack – A CFNgin stack.
provider_stack – An optional CFNgin provider object.

Returns

The parameters for the given stack

build_provider() → Provider[source]: Override the inherited method to always return local provider.

ensure_cfn_bucket() → None: CloudFormation bucket where templates will be stored.

execute(**kwargs: Any) → None: Run the action with pre and post steps.

post_run(*, dump: Union[bool, str] = False, outline: bool = False, **_: Any) → None: Any steps that need to be taken after running the action.

pre_run(*, dump: Union[bool, str] = False, outline: bool = False, **_: Any) → None: Any steps that need to be taken prior to running the action.

s3_stack_push(blueprint: Blueprint, force: bool = False) → str

Push the rendered blueprint’s template to S3.

Verifies that the template doesn’t already exist in S3 before pushing.

Returns: URL to the template in S3.

stack_template_url(blueprint: Blueprint) → str: S3 URL for CloudFormation template object.

property upload_disabled: bool: Whether the CloudFormation template should be uploaded to S3.

run(**kwargs: Any) → Status[source]: Run the action for one stack.

class runway.cfngin.hooks.base.HookDestroyAction[source]

Bases: runway.cfngin.hooks.base.HookDeployAction

Destroy action that can be used from hooks.

__init__(context: CfnginContext, provider: Provider)

Instantiate class.

Parameters

context – The context for the current run.
provider – The provider instance.

__new__(**kwargs)

static build_parameters(stack: Stack, provider_stack: Optional[StackTypeDef] = None) → List[ParameterTypeDef]

Build the CloudFormation Parameters for our stack.

Parameters

stack – A CFNgin stack.
provider_stack – An optional CFNgin provider object.

Returns

The parameters for the given stack

build_provider() → Provider: Override the inherited method to always return local provider.

ensure_cfn_bucket() → None: CloudFormation bucket where templates will be stored.

execute(**kwargs: Any) → None: Run the action with pre and post steps.

post_run(*, dump: Union[bool, str] = False, outline: bool = False, **_: Any) → None: Any steps that need to be taken after running the action.

pre_run(*, dump: Union[bool, str] = False, outline: bool = False, **_: Any) → None: Any steps that need to be taken prior to running the action.

property provider: Provider: Override the inherited property to return the local provider.

s3_stack_push(blueprint: Blueprint, force: bool = False) → str

Push the rendered blueprint’s template to S3.

Verifies that the template doesn’t already exist in S3 before pushing.

Returns: URL to the template in S3.

stack_template_url(blueprint: Blueprint) → str: S3 URL for CloudFormation template object.

property upload_disabled: bool: Whether the CloudFormation template should be uploaded to S3.

run(**kwargs: Any) → Status[source]: Run the action for one stack.