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How to use cloudformation_type method in localstack

Best Python code snippet using localstack_python

base.py

Source:base.py

1import json2from classes import fields3from classes.functions import Ref4from classes.resource import Resource, ConfigurationError5CIDR_BLOCK_REGEX = r"(?:\d{1,3}\.){3}\d{1,3}(?:/\d\d?)?"6class Vpc(Resource):7    cloudformation_type = "AWS::EC2::VPC"8    # Write out the fields that we could need9    cidr_block = fields.StringField(default="10.0.0.0/16",regex=CIDR_BLOCK_REGEX, required=True)10    enable_dns_hostnames = fields.BooleanField(default=False, required=False)11    enable_dns_support = fields.BooleanField(default=False, required=False)12    instance_tenancy = fields.StringField(default="default", required=False, choices=["dedicated", "default", "host"])13    # GetAtt attributes14    GetAtt_attributes = ["CidrBlock", "CidrBlockAssociations", "DefaultNetworkAcl", "DefaultSecurityGroup", "Ipv6CidrBlocks"]15    def __init__(self, name:str, cidr_block:str=None, enable_dns_hostnames:bool=None, enable_dns_support:bool=None, instance_tenancy:str=None, **kwargs):16        super().__init__(name, **kwargs)17        # instantiate the fields18        self.cidr_block = cidr_block19        self.enable_dns_hostnames = enable_dns_hostnames20        self.enable_dns_support = enable_dns_support21        self.instance_tenancy = instance_tenancy22class Subnet(Resource):23    cloudformation_type = "AWS::EC2::Subnet"24    exclude_null=True25    # Fields26    assign_ipv6_address_on_creation = fields.BooleanField(default=False, required=False)27    availability_zone = fields.StringField(required=True)    28    cidr_block = fields.StringField(regex=CIDR_BLOCK_REGEX, required=True)29    ipv6_cidr_block = fields.StringField(default=None, required=False)30    map_public_ip_on_launch = fields.BooleanField(default=False, required=False)31    outpost_arn = fields.StringField(default=None, required=False)32    vpc_id = fields.RefField(Vpc, required=True)33    GetAtt_attributes = []34    def __init__(35        self,36        name:str,37        assign_ipv6_address_on_creation:bool=assign_ipv6_address_on_creation.default,38        availability_zone:str=None,39        cidr_block:str=None,40        ipv6_cidr_block:str=ipv6_cidr_block.default,41        map_public_ip_on_launch:bool=map_public_ip_on_launch.default,42        outpost_arn:str=None,43        vpc_id:Ref=None,44        **tags45    ):46        super().__init__(name, **tags)47        # assign the fields48        self.assign_ipv6_address_on_creation = assign_ipv6_address_on_creation49        self.availability_zone = availability_zone50        self.cidr_block = cidr_block51        self.ipv6_cidr_block = ipv6_cidr_block52        self.map_public_ip_on_launch = map_public_ip_on_launch53        self.outpost_arn = outpost_arn54        self.vpc_id = vpc_id55class RouteTable(Resource):56    pass57class RouteTableAssociation(Resource):58    pass59class InternetGateway(Resource):60    cloudformation_type = "AWS::EC2::InternetGateway"61    def __init__(self, name:str, **tags):62        super().__init__(name, **tags)63class VpnGateway(Resource):64    pass65class VpcGatewayAttachment(Resource):66    cloudformation_type = "AWS::EC2::VPCGatewayAttachment"67    # Fields68    internet_gateway_id = fields.RefField(InternetGateway, required=False)69    vpc_id = fields.RefField(Vpc, required=True)70    vpn_gateway_id = fields.RefField(VpnGateway, required=False)71    def __init__(72        self,73        name:str,74        internet_gateway_id:Ref=None,75        vpc_id:Ref=None,76        vpn_gateway_id:Ref=None77    ):78        super().__init__(name, include_tags=False)79        # Cannot have both IG and Vpn80        if not (bool(internet_gateway_id) != bool(vpn_gateway_id)):81            raise ConfigurationError("Can only assign InternetGateway -or- VpnGateway")82        self.internet_gateway_id = internet_gateway_id83        self.vpc_id = vpc_id84        self.vpn_gateway_id = vpn_gateway_id85class NatGateway(Resource):...

resource.py

Source:resource.py

1import re, json, inspect2from .fields import Field, TagField3from .functions import AwsNoValue, Ref, GetAtt4from .utils import snake_to_camel5class Resource:6    GetAtt_attributes = []7    cloudformation_type = ""8    exclude_null=False9    def __init__(self, name:str, include_tags:bool=True, depends_on=[], **tags):10        # ensure that the name matches the name regex11        PATTERN_STRING = "^[a-zA-Z]{1}[a-zA-Z0-9]+$"12        NAME_PATTERN = re.compile(PATTERN_STRING)13        if not NAME_PATTERN.match(name):14            raise ValueError(f"The resource's name must match the expression `{PATTERN_STRING}`")15        self.name = name16        # set the tags17        if include_tags:18            self.tags = TagField(**tags)19    20    def __call__(self, attr:str=None):21        """22        Return a 'Ref' or 'GetAtt' object23        """24        if attr is None:25            # Looking for a Ref object26            return Ref(self)27        28        else:29            if attr not in self.GetAtt_attributes:30                raise ValueError(f"Parameter `attr` must be in {self.__class__.__name__}.GetAtt_attributes")31            return GetAtt(self, attr)32    def __setattr__(self, name, value):33        current_value = getattr(self, name, None)34        # If the current value of the changing variable is a Field object,35        # change the field's value instead of the attribute36        if isinstance(current_value, Field):37            try:38                self.__dict__[name].value = value39            except KeyError:40                self.__dict__[name] = self.__class__.__dict__[name]41                self.__dict__[name].value = value42        else:43            super().__setattr__(name, value)44    @property45    def fields(self):46        # Get all variables in the instance that are of type 'fields.Field'47        _func_name = inspect.stack()[0][3]48        fields = {snake_to_camel(attr): getattr(self, attr).value for attr in dir(self) if attr != _func_name and isinstance(getattr(self, attr), Field)}49        new_fields = {}50        # Convert the 'None' field values to {"Ref": "AWS::NoValue"}51        for key, value in fields.items():52            if value is None:53                fields[key] = AwsNoValue.value54            55            if not self.exclude_null:56                new_fields[key] = value57        58        return new_fields59    60    def to_cf_json(self):61        return {62            self.name: {63                "Type": self.cloudformation_type,64                "Properties": self.fields65            }66        }67class CompoundResource(Resource):68    nested_resources = []69    def __call__(self):70        return NotImplementedError()71    def to_cf_json(self):72        result = {}73        for res in self.nested_resources:74            result.update(res.to_cf_json())75        return result76class ConfigurationError(Exception):...

fail_all_resources.py

Source:fail_all_resources.py

1import boto32import json3import os4config = boto3.client('config')5CLOUDFORMATION_TYPE = 'AWS::CloudFormation::Stack'6def handler(event, context):7    invoking_event = json.loads(event['invokingEvent'])8    configItem = invoking_event.get('configurationItem') or invoking_event['configurationItemSummary']9    resource_id = configItem['resourceId']10    resource_type = configItem['resourceType']11    print("FunctionName: " + context.function_name)12    print("ResourceId: " + resource_id)13    print("Resourcetype: " + resource_type)14    compliance_type = 'NON_COMPLIANT'15    annotation = 'No Resources should be deployed in this Region'16    if (17            (context.function_name == resource_id and resource_type == 'AWS::Lambda::Function') or18            (os.environ['StackName'] in resource_id and resource_type == CLOUDFORMATION_TYPE) or19            ('StackSet-' in resource_id and resource_type == CLOUDFORMATION_TYPE)20    ):21        compliance_type = 'COMPLIANT'22        annotation = 'Compliant'23    print('ComplianceStatus: ' + compliance_type)24    config.put_evaluations(25        Evaluations=[26            {27                'ComplianceResourceType': resource_type,28                'ComplianceResourceId': resource_id,29                'ComplianceType': compliance_type,30                'Annotation': annotation,31                'OrderingTimestamp': configItem['configurationItemCaptureTime']32            }33        ],34        ResultToken=event['resultToken']...

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