models.py

import uuid
from collections import OrderedDict
from datetime import datetime

from moto.core import BaseBackend, BaseModel, get_account_id
from moto.core.utils import BackendDict, iso_8601_datetime_with_milliseconds
from .exceptions import (
    GreengrassClientError,
    IdNotFoundException,
    InvalidInputException,
    InvalidContainerDefinitionException,
    VersionNotFoundException,
)


class FakeCoreDefinition(BaseModel):
    def __init__(self, region_name, name):
        self.region_name = region_name
        self.name = name
        self.id = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:greengrass/definition/cores/{self.id}"
        self.created_at_datetime = datetime.utcnow()
        self.latest_version = ""
        self.latest_version_arn = ""

    def to_dict(self):
        return {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.id,
            "LastUpdatedTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "LatestVersion": self.latest_version,
            "LatestVersionArn": self.latest_version_arn,
            "Name": self.name,
        }


class FakeCoreDefinitionVersion(BaseModel):
    def __init__(self, region_name, core_definition_id, definition):
        self.region_name = region_name
        self.core_definition_id = core_definition_id
        self.definition = definition
        self.version = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:greengrass/definition/cores/{self.core_definition_id}/versions/{self.version}"
        self.created_at_datetime = datetime.utcnow()

    def to_dict(self, include_detail=False):
        obj = {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.core_definition_id,
            "Version": self.version,
        }

        if include_detail:
            obj["Definition"] = self.definition

        return obj


class FakeDeviceDefinition(BaseModel):
    def __init__(self, region_name, name, initial_version):
        self.region_name = region_name
        self.id = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:greengrass/definition/devices/{self.id}"
        self.created_at_datetime = datetime.utcnow()
        self.update_at_datetime = datetime.utcnow()
        self.latest_version = ""
        self.latest_version_arn = ""
        self.name = name
        self.initial_version = initial_version

    def to_dict(self):
        res = {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.id,
            "LastUpdatedTimestamp": iso_8601_datetime_with_milliseconds(
                self.update_at_datetime
            ),
            "LatestVersion": self.latest_version,
            "LatestVersionArn": self.latest_version_arn,
        }
        if self.name is not None:
            res["Name"] = self.name
        return res


class FakeDeviceDefinitionVersion(BaseModel):
    def __init__(self, region_name, device_definition_id, devices):
        self.region_name = region_name
        self.device_definition_id = device_definition_id
        self.devices = devices
        self.version = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:/greengrass/definition/devices/{self.device_definition_id}/versions/{self.version}"
        self.created_at_datetime = datetime.utcnow()

    def to_dict(self, include_detail=False):
        obj = {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.device_definition_id,
            "Version": self.version,
        }

        if include_detail:
            obj["Definition"] = {"Devices": self.devices}

        return obj


class FakeResourceDefinition(BaseModel):
    def __init__(self, region_name, name, initial_version):
        self.region_name = region_name
        self.id = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:/greengrass/definition/resources/{self.id}"
        self.created_at_datetime = datetime.utcnow()
        self.update_at_datetime = datetime.utcnow()
        self.latest_version = ""
        self.latest_version_arn = ""
        self.name = name
        self.initial_version = initial_version

    def to_dict(self):
        return {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.id,
            "LastUpdatedTimestamp": iso_8601_datetime_with_milliseconds(
                self.update_at_datetime
            ),
            "LatestVersion": self.latest_version,
            "LatestVersionArn": self.latest_version_arn,
            "Name": self.name,
        }


class FakeResourceDefinitionVersion(BaseModel):
    def __init__(self, region_name, resource_definition_id, resources):
        self.region_name = region_name
        self.resource_definition_id = resource_definition_id
        self.resources = resources
        self.version = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{region_name}:{get_account_id()}:/greengrass/definition/resources/{self.resource_definition_id}/versions/{self.version}"
        self.created_at_datetime = datetime.utcnow()

    def to_dict(self):
        return {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Definition": {"Resources": self.resources},
            "Id": self.resource_definition_id,
            "Version": self.version,
        }


class FakeFunctionDefinition(BaseModel):
    def __init__(self, region_name, name, initial_version):
        self.region_name = region_name
        self.id = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{self.region_name}:{get_account_id()}:/greengrass/definition/functions/{self.id}"
        self.created_at_datetime = datetime.utcnow()
        self.update_at_datetime = datetime.utcnow()
        self.latest_version = ""
        self.latest_version_arn = ""
        self.name = name
        self.initial_version = initial_version

    def to_dict(self):
        res = {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Id": self.id,
            "LastUpdatedTimestamp": iso_8601_datetime_with_milliseconds(
                self.update_at_datetime
            ),
            "LatestVersion": self.latest_version,
            "LatestVersionArn": self.latest_version_arn,
        }
        if self.name is not None:
            res["Name"] = self.name
        return res


class FakeFunctionDefinitionVersion(BaseModel):
    def __init__(self, region_name, function_definition_id, functions, default_config):
        self.region_name = region_name
        self.function_definition_id = function_definition_id
        self.functions = functions
        self.default_config = default_config
        self.version = str(uuid.uuid4())
        self.arn = f"arn:aws:greengrass:{self.region_name}:{get_account_id()}:/greengrass/definition/functions/{self.function_definition_id}/versions/{self.version}"
        self.created_at_datetime = datetime.utcnow()

    def to_dict(self):
        return {
            "Arn": self.arn,
            "CreationTimestamp": iso_8601_datetime_with_milliseconds(
                self.created_at_datetime
            ),
            "Definition": {"Functions": self.functions},
            "Id": self.function_definition_id,
            "Version": self.version,
        }


class GreengrassBackend(BaseBackend):
    def __init__(self, region_name, account_id):
        super().__init__(region_name, account_id)
        self.groups = OrderedDict()
        self.group_versions = OrderedDict()
        self.core_definitions = OrderedDict()
        self.core_definition_versions = OrderedDict()
        self.device_definitions = OrderedDict()
        self.device_definition_versions = OrderedDict()
        self.function_definitions = OrderedDict()
        self.function_definition_versions = OrderedDict()
        self.resource_definitions = OrderedDict()
        self.resource_definition_versions = OrderedDict()
        self.subscription_definitions = OrderedDict()
        self.subscription_definition_versions = OrderedDict()
        self.deployments = OrderedDict()

    def create_core_definition(self, name, initial_version):

        core_definition = FakeCoreDefinition(self.region_name, name)
        self.core_definitions[core_definition.id] = core_definition
        self.create_core_definition_version(
            core_definition.id, initial_version["Cores"]
        )
        return core_definition

    def list_core_definitions(self):
        return self.core_definitions.values()

    def get_core_definition(self, core_definition_id):

        if core_definition_id not in self.core_definitions:
            raise IdNotFoundException("That Core List Definition does not exist")
        return self.core_definitions[core_definition_id]

    def delete_core_definition(self, core_definition_id):
        if core_definition_id not in self.core_definitions:
            raise IdNotFoundException("That cores definition does not exist.")
        del self.core_definitions[core_definition_id]
        del self.core_definition_versions[core_definition_id]

    def update_core_definition(self, core_definition_id, name):

        if name == "":
            raise InvalidContainerDefinitionException(
                "Input does not contain any attributes to be updated"
            )
        if core_definition_id not in self.core_definitions:
            raise IdNotFoundException("That cores definition does not exist.")
        self.core_definitions[core_definition_id].name = name

    def create_core_definition_version(self, core_definition_id, cores):

        definition = {"Cores": cores}
        core_def_ver = FakeCoreDefinitionVersion(
            self.region_name, core_definition_id, definition
        )
        core_def_vers = self.core_definition_versions.get(
            core_def_ver.core_definition_id, {}
        )
        core_def_vers[core_def_ver.version] = core_def_ver
        self.core_definition_versions[core_def_ver.core_definition_id] = core_def_vers

        self.core_definitions[core_definition_id].latest_version = core_def_ver.version
        self.core_definitions[core_definition_id].latest_version_arn = core_def_ver.arn

        return core_def_ver

    def list_core_definition_versions(self, core_definition_id):

        if core_definition_id not in self.core_definitions:
            raise IdNotFoundException("That cores definition does not exist.")
        return self.core_definition_versions[core_definition_id].values()

    def get_core_definition_version(
        self, core_definition_id, core_definition_version_id
    ):

        if core_definition_id not in self.core_definitions:
            raise IdNotFoundException("That cores definition does not exist.")

        if (
            core_definition_version_id
            not in self.core_definition_versions[core_definition_id]
        ):
            raise VersionNotFoundException(
                f"Version {core_definition_version_id} of Core List Definition {core_definition_id} does not exist."
            )

        return self.core_definition_versions[core_definition_id][
            core_definition_version_id
        ]

    def create_device_definition(self, name, initial_version):
        device_def = FakeDeviceDefinition(self.region_name, name, initial_version)
        self.device_definitions[device_def.id] = device_def
        init_ver = device_def.initial_version
        init_device_def = init_ver.get("Devices", {})
        self.create_device_definition_version(device_def.id, init_device_def)

        return device_def

    def list_device_definitions(self):
        return self.device_definitions.values()

    def create_device_definition_version(self, device_definition_id, devices):

        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That devices definition does not exist.")

        device_ver = FakeDeviceDefinitionVersion(
            self.region_name, device_definition_id, devices
        )
        device_vers = self.device_definition_versions.get(
            device_ver.device_definition_id, {}
        )
        device_vers[device_ver.version] = device_ver
        self.device_definition_versions[device_ver.device_definition_id] = device_vers
        self.device_definitions[
            device_definition_id
        ].latest_version = device_ver.version
        self.device_definitions[
            device_definition_id
        ].latest_version_arn = device_ver.arn

        return device_ver

    def list_device_definition_versions(self, device_definition_id):

        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That devices definition does not exist.")
        return self.device_definition_versions[device_definition_id].values()

    def get_device_definition(self, device_definition_id):

        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That Device List Definition does not exist.")
        return self.device_definitions[device_definition_id]

    def delete_device_definition(self, device_definition_id):
        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That devices definition does not exist.")
        del self.device_definitions[device_definition_id]
        del self.device_definition_versions[device_definition_id]

    def update_device_definition(self, device_definition_id, name):

        if name == "":
            raise InvalidContainerDefinitionException(
                "Input does not contain any attributes to be updated"
            )
        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That devices definition does not exist.")
        self.device_definitions[device_definition_id].name = name

    def get_device_definition_version(
        self, device_definition_id, device_definition_version_id
    ):

        if device_definition_id not in self.device_definitions:
            raise IdNotFoundException("That devices definition does not exist.")

        if (
            device_definition_version_id
            not in self.device_definition_versions[device_definition_id]
        ):
            raise VersionNotFoundException(
                f"Version {device_definition_version_id} of Device List Definition {device_definition_id} does not exist."
            )

        return self.device_definition_versions[device_definition_id][
            device_definition_version_id
        ]

    def create_resource_definition(self, name, initial_version):

        resources = initial_version.get("Resources", [])
        GreengrassBackend._validate_resources(resources)

        resource_def = FakeResourceDefinition(self.region_name, name, initial_version)
        self.resource_definitions[resource_def.id] = resource_def
        init_ver = resource_def.initial_version
        resources = init_ver.get("Resources", {})
        self.create_resource_definition_version(resource_def.id, resources)

        return resource_def

    def list_resource_definitions(self):
        return self.resource_definitions

    def get_resource_definition(self, resource_definition_id):

        if resource_definition_id not in self.resource_definitions:
            raise IdNotFoundException("That Resource List Definition does not exist.")
        return self.resource_definitions[resource_definition_id]

    def delete_resource_definition(self, resource_definition_id):
        if resource_definition_id not in self.resource_definitions:
            raise IdNotFoundException("That resources definition does not exist.")
        del self.resource_definitions[resource_definition_id]
        del self.resource_definition_versions[resource_definition_id]

    def update_resource_definition(self, resource_definition_id, name):

        if name == "":
            raise InvalidInputException("Invalid resource name.")
        if resource_definition_id not in self.resource_definitions:
            raise IdNotFoundException("That resources definition does not exist.")
        self.resource_definitions[resource_definition_id].name = name

    def create_resource_definition_version(self, resource_definition_id, resources):

        if resource_definition_id not in self.resource_definitions:
            raise IdNotFoundException("That resource definition does not exist.")

        GreengrassBackend._validate_resources(resources)

        resource_def_ver = FakeResourceDefinitionVersion(
            self.region_name, resource_definition_id, resources
        )

        resources_ver = self.resource_definition_versions.get(
            resource_def_ver.resource_definition_id, {}
        )
        resources_ver[resource_def_ver.version] = resource_def_ver
        self.resource_definition_versions[
            resource_def_ver.resource_definition_id
        ] = resources_ver

        self.resource_definitions[
            resource_definition_id
        ].latest_version = resource_def_ver.version

        self.resource_definitions[
            resource_definition_id
        ].latest_version_arn = resource_def_ver.arn

        return resource_def_ver

    def list_resource_definition_versions(self, resource_definition_id):

        if resource_definition_id not in self.resource_definition_versions:
            raise IdNotFoundException("That resources definition does not exist.")

        return self.resource_definition_versions[resource_definition_id].values()

    def get_resource_definition_version(
        self, resource_definition_id, resource_definition_version_id
    ):

        if resource_definition_id not in self.resource_definition_versions:
            raise IdNotFoundException("That resources definition does not exist.")

        if (
            resource_definition_version_id
            not in self.resource_definition_versions[resource_definition_id]
        ):
            raise VersionNotFoundException(
                f"Version {resource_definition_version_id} of Resource List Definition {resource_definition_id} does not exist."
            )

        return self.resource_definition_versions[resource_definition_id][
            resource_definition_version_id
        ]

    @staticmethod
    def _validate_resources(resources):
        for resource in resources:
            volume_source_path = (
                resource.get("ResourceDataContainer", {})
                .get("LocalVolumeResourceData", {})
                .get("SourcePath", "")
            )
            if volume_source_path == "/sys" or volume_source_path.startswith("/sys/"):
                raise GreengrassClientError(
                    "400",
                    "The resources definition is invalid. (ErrorDetails: [Accessing /sys is prohibited])",
                )

            local_device_resource_data = resource.get("ResourceDataContainer", {}).get(
                "LocalDeviceResourceData", {}
            )
            if local_device_resource_data:
                device_source_path = local_device_resource_data["SourcePath"]
                if not device_source_path.startswith("/dev"):
                    raise GreengrassClientError(
                        "400",
                        f"The resources definition is invalid. (ErrorDetails: [Device resource path should begin with "
                        "/dev"
                        f", but got: {device_source_path}])",
                    )

    def create_function_definition(self, name, initial_version):
        func_def = FakeFunctionDefinition(self.region_name, name, initial_version)
        self.function_definitions[func_def.id] = func_def
        init_ver = func_def.initial_version
        init_func_def = init_ver.get("Functions", {})
        init_config = init_ver.get("DefaultConfig", {})
        self.create_function_definition_version(func_def.id, init_func_def, init_config)

        return func_def

    def list_function_definitions(self):
        return self.function_definitions.values()

    def get_function_definition(self, function_definition_id):

        if function_definition_id not in self.function_definitions:
            raise IdNotFoundException("That Lambda List Definition does not exist.")
        return self.function_definitions[function_definition_id]

    def delete_function_definition(self, function_definition_id):
        if function_definition_id not in self.function_definitions:
            raise IdNotFoundException("That lambdas definition does not exist.")
        del self.function_definitions[function_definition_id]
        del self.function_definition_versions[function_definition_id]

    def update_function_definition(self, function_definition_id, name):

        if name == "":
            raise InvalidContainerDefinitionException(
                "Input does not contain any attributes to be updated"
            )
        if function_definition_id not in self.function_definitions:
            raise IdNotFoundException("That lambdas definition does not exist.")
        self.function_definitions[function_definition_id].name = name

    def create_function_definition_version(
        self, function_definition_id, functions, default_config
    ):

        if function_definition_id not in self.function_definitions:
            raise IdNotFoundException("That lambdas does not exist.")

        func_ver = FakeFunctionDefinitionVersion(
            self.region_name, function_definition_id, functions, default_config
        )
        func_vers = self.function_definition_versions.get(
            func_ver.function_definition_id, {}
        )
        func_vers[func_ver.version] = func_ver
        self.function_definition_versions[func_ver.function_definition_id] = func_vers
        self.function_definitions[
            function_definition_id
        ].latest_version = func_ver.version
        self.function_definitions[
            function_definition_id
        ].latest_version_arn = func_ver.arn

        return func_ver

    def list_function_definition_versions(self, function_definition_id):
        if function_definition_id not in self.function_definition_versions:
            raise IdNotFoundException("That lambdas definition does not exist.")
        return self.function_definition_versions[function_definition_id]

    def get_function_definition_version(
        self, function_definition_id, function_definition_version_id
    ):

        if function_definition_id not in self.function_definition_versions:
            raise IdNotFoundException("That lambdas definition does not exist.")

        if (
            function_definition_version_id
            not in self.function_definition_versions[function_definition_id]
        ):
            raise IdNotFoundException(
                f"Version {function_definition_version_id} of Lambda List Definition {function_definition_id} does not exist."
            )

        return self.function_definition_versions[function_definition_id][
            function_definition_version_id
        ]


greengrass_backends = BackendDict(GreengrassBackend, "greengrass")