AWS Greengrass

2019/03/07 - AWS Greengrass - 3 updated api methods

Changes  Greengrass group UID and GID settings can now be configured to use a provided default via FunctionDefaultConfig. If configured, all Lambda processes in your deployed Greengrass group will by default start with the provided UID and/or GID, rather than by default starting with UID "ggc_user" and GID "ggc_group" as they would if not configured. Individual Lambdas can also be configured to override the defaults if desired via each object in the Functions list of your FunctionDefinitionVersion.

CreateFunctionDefinition (updated) Link ¶
Changes (request)
{'InitialVersion': {'DefaultConfig': {'Execution': {'RunAs': {'Gid': 'integer',
                                                              'Uid': 'integer'}}}}}

Creates a Lambda function definition which contains a list of Lambda functions and their configurations to be used in a group. You can create an initial version of the definition by providing a list of Lambda functions and their configurations now, or use ''CreateFunctionDefinitionVersion'' later.

See also: AWS API Documentation

Request Syntax

client.create_function_definition(
    AmznClientToken='string',
    InitialVersion={
        'DefaultConfig': {
            'Execution': {
                'IsolationMode': 'GreengrassContainer'|'NoContainer',
                'RunAs': {
                    'Gid': 123,
                    'Uid': 123
                }
            }
        },
        'Functions': [
            {
                'FunctionArn': 'string',
                'FunctionConfiguration': {
                    'EncodingType': 'binary'|'json',
                    'Environment': {
                        'AccessSysfs': True|False,
                        'Execution': {
                            'IsolationMode': 'GreengrassContainer'|'NoContainer',
                            'RunAs': {
                                'Gid': 123,
                                'Uid': 123
                            }
                        },
                        'ResourceAccessPolicies': [
                            {
                                'Permission': 'ro'|'rw',
                                'ResourceId': 'string'
                            },
                        ],
                        'Variables': {
                            'string': 'string'
                        }
                    },
                    'ExecArgs': 'string',
                    'Executable': 'string',
                    'MemorySize': 123,
                    'Pinned': True|False,
                    'Timeout': 123
                },
                'Id': 'string'
            },
        ]
    },
    Name='string'
)
type AmznClientToken

string

param AmznClientToken

A client token used to correlate requests and responses.

type InitialVersion

dict

param InitialVersion

Information about the initial version of the function definition.

  • DefaultConfig (dict) -- The default configuration that applies to all Lambda functions in this function definition version. Individual Lambda functions can override these settings.

    • Execution (dict) -- Configuration information that specifies how a Lambda function runs.

      • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

      • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

        • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

        • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

  • Functions (list) -- A list of Lambda functions in this function definition version.

    • (dict) -- Information about a Lambda function.

      • FunctionArn (string) -- The ARN of the Lambda function.

      • FunctionConfiguration (dict) -- The configuration of the Lambda function.

        • EncodingType (string) -- The expected encoding type of the input payload for the function. The default is ''json''.

        • Environment (dict) -- The environment configuration of the function.

          • AccessSysfs (boolean) -- If true, the Lambda function is allowed to access the host's /sys folder. Use this when the Lambda function needs to read device information from /sys. This setting applies only when you run the Lambda function in a Greengrass container.

          • Execution (dict) -- Configuration related to executing the Lambda function

            • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

            • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

              • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

              • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

          • ResourceAccessPolicies (list) -- A list of the resources, with their permissions, to which the Lambda function will be granted access. A Lambda function can have at most 10 resources. ResourceAccessPolicies apply only when you run the Lambda function in a Greengrass container.

            • (dict) -- A policy used by the function to access a resource.

              • Permission (string) -- The permissions that the Lambda function has to the resource. Can be one of ''rw'' (read/write) or ''ro'' (read-only).

              • ResourceId (string) -- The ID of the resource. (This ID is assigned to the resource when you create the resource definiton.)

          • Variables (dict) -- Environment variables for the Lambda function's configuration.

            • (string) --

              • (string) --

        • ExecArgs (string) -- The execution arguments.

        • Executable (string) -- The name of the function executable.

        • MemorySize (integer) -- The memory size, in KB, which the function requires. This setting is not applicable and should be cleared when you run the Lambda function without containerization.

        • Pinned (boolean) -- True if the function is pinned. Pinned means the function is long-lived and starts when the core starts.

        • Timeout (integer) -- The allowed function execution time, after which Lambda should terminate the function. This timeout still applies to pinned Lambda functions for each request.

      • Id (string) -- A descriptive or arbitrary ID for the function. This value must be unique within the function definition version. Max length is 128 characters with pattern ''[a-zA-Z0-9:_-]+''.

type Name

string

param Name

The name of the function definition.

rtype

dict

returns

Response Syntax

{
    'Arn': 'string',
    'CreationTimestamp': 'string',
    'Id': 'string',
    'LastUpdatedTimestamp': 'string',
    'LatestVersion': 'string',
    'LatestVersionArn': 'string',
    'Name': 'string'
}

Response Structure

  • (dict) --

    • Arn (string) -- The ARN of the definition.

    • CreationTimestamp (string) -- The time, in milliseconds since the epoch, when the definition was created.

    • Id (string) -- The ID of the definition.

    • LastUpdatedTimestamp (string) -- The time, in milliseconds since the epoch, when the definition was last updated.

    • LatestVersion (string) -- The latest version of the definition.

    • LatestVersionArn (string) -- The ARN of the latest version of the definition.

    • Name (string) -- The name of the definition.

CreateFunctionDefinitionVersion (updated) Link ¶
Changes (request)
{'DefaultConfig': {'Execution': {'RunAs': {'Gid': 'integer',
                                           'Uid': 'integer'}}}}

Creates a version of a Lambda function definition that has already been defined.

See also: AWS API Documentation

Request Syntax

client.create_function_definition_version(
    AmznClientToken='string',
    DefaultConfig={
        'Execution': {
            'IsolationMode': 'GreengrassContainer'|'NoContainer',
            'RunAs': {
                'Gid': 123,
                'Uid': 123
            }
        }
    },
    FunctionDefinitionId='string',
    Functions=[
        {
            'FunctionArn': 'string',
            'FunctionConfiguration': {
                'EncodingType': 'binary'|'json',
                'Environment': {
                    'AccessSysfs': True|False,
                    'Execution': {
                        'IsolationMode': 'GreengrassContainer'|'NoContainer',
                        'RunAs': {
                            'Gid': 123,
                            'Uid': 123
                        }
                    },
                    'ResourceAccessPolicies': [
                        {
                            'Permission': 'ro'|'rw',
                            'ResourceId': 'string'
                        },
                    ],
                    'Variables': {
                        'string': 'string'
                    }
                },
                'ExecArgs': 'string',
                'Executable': 'string',
                'MemorySize': 123,
                'Pinned': True|False,
                'Timeout': 123
            },
            'Id': 'string'
        },
    ]
)
type AmznClientToken

string

param AmznClientToken

A client token used to correlate requests and responses.

type DefaultConfig

dict

param DefaultConfig

The default configuration that applies to all Lambda functions in this function definition version. Individual Lambda functions can override these settings.

  • Execution (dict) -- Configuration information that specifies how a Lambda function runs.

    • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

    • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

      • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

      • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

type FunctionDefinitionId

string

param FunctionDefinitionId

[REQUIRED] The ID of the Lambda function definition.

type Functions

list

param Functions

A list of Lambda functions in this function definition version.

  • (dict) -- Information about a Lambda function.

    • FunctionArn (string) -- The ARN of the Lambda function.

    • FunctionConfiguration (dict) -- The configuration of the Lambda function.

      • EncodingType (string) -- The expected encoding type of the input payload for the function. The default is ''json''.

      • Environment (dict) -- The environment configuration of the function.

        • AccessSysfs (boolean) -- If true, the Lambda function is allowed to access the host's /sys folder. Use this when the Lambda function needs to read device information from /sys. This setting applies only when you run the Lambda function in a Greengrass container.

        • Execution (dict) -- Configuration related to executing the Lambda function

          • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

          • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

            • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

            • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

        • ResourceAccessPolicies (list) -- A list of the resources, with their permissions, to which the Lambda function will be granted access. A Lambda function can have at most 10 resources. ResourceAccessPolicies apply only when you run the Lambda function in a Greengrass container.

          • (dict) -- A policy used by the function to access a resource.

            • Permission (string) -- The permissions that the Lambda function has to the resource. Can be one of ''rw'' (read/write) or ''ro'' (read-only).

            • ResourceId (string) -- The ID of the resource. (This ID is assigned to the resource when you create the resource definiton.)

        • Variables (dict) -- Environment variables for the Lambda function's configuration.

          • (string) --

            • (string) --

      • ExecArgs (string) -- The execution arguments.

      • Executable (string) -- The name of the function executable.

      • MemorySize (integer) -- The memory size, in KB, which the function requires. This setting is not applicable and should be cleared when you run the Lambda function without containerization.

      • Pinned (boolean) -- True if the function is pinned. Pinned means the function is long-lived and starts when the core starts.

      • Timeout (integer) -- The allowed function execution time, after which Lambda should terminate the function. This timeout still applies to pinned Lambda functions for each request.

    • Id (string) -- A descriptive or arbitrary ID for the function. This value must be unique within the function definition version. Max length is 128 characters with pattern ''[a-zA-Z0-9:_-]+''.

rtype

dict

returns

Response Syntax

{
    'Arn': 'string',
    'CreationTimestamp': 'string',
    'Id': 'string',
    'Version': 'string'
}

Response Structure

  • (dict) --

    • Arn (string) -- The ARN of the version.

    • CreationTimestamp (string) -- The time, in milliseconds since the epoch, when the version was created.

    • Id (string) -- The ID of the version.

    • Version (string) -- The unique ID of the version.

GetFunctionDefinitionVersion (updated) Link ¶
Changes (response)
{'Definition': {'DefaultConfig': {'Execution': {'RunAs': {'Gid': 'integer',
                                                          'Uid': 'integer'}}}}}

Retrieves information about a Lambda function definition version, including which Lambda functions are included in the version and their configurations.

See also: AWS API Documentation

Request Syntax

client.get_function_definition_version(
    FunctionDefinitionId='string',
    FunctionDefinitionVersionId='string',
    NextToken='string'
)
type FunctionDefinitionId

string

param FunctionDefinitionId

[REQUIRED] The ID of the Lambda function definition.

type FunctionDefinitionVersionId

string

param FunctionDefinitionVersionId

[REQUIRED] The ID of the function definition version.

type NextToken

string

param NextToken

The token for the next set of results, or ''null'' if there are no additional results.

rtype

dict

returns

Response Syntax

{
    'Arn': 'string',
    'CreationTimestamp': 'string',
    'Definition': {
        'DefaultConfig': {
            'Execution': {
                'IsolationMode': 'GreengrassContainer'|'NoContainer',
                'RunAs': {
                    'Gid': 123,
                    'Uid': 123
                }
            }
        },
        'Functions': [
            {
                'FunctionArn': 'string',
                'FunctionConfiguration': {
                    'EncodingType': 'binary'|'json',
                    'Environment': {
                        'AccessSysfs': True|False,
                        'Execution': {
                            'IsolationMode': 'GreengrassContainer'|'NoContainer',
                            'RunAs': {
                                'Gid': 123,
                                'Uid': 123
                            }
                        },
                        'ResourceAccessPolicies': [
                            {
                                'Permission': 'ro'|'rw',
                                'ResourceId': 'string'
                            },
                        ],
                        'Variables': {
                            'string': 'string'
                        }
                    },
                    'ExecArgs': 'string',
                    'Executable': 'string',
                    'MemorySize': 123,
                    'Pinned': True|False,
                    'Timeout': 123
                },
                'Id': 'string'
            },
        ]
    },
    'Id': 'string',
    'NextToken': 'string',
    'Version': 'string'
}

Response Structure

  • (dict) -- success

    • Arn (string) -- The ARN of the function definition version.

    • CreationTimestamp (string) -- The time, in milliseconds since the epoch, when the function definition version was created.

    • Definition (dict) -- Information on the definition.

      • DefaultConfig (dict) -- The default configuration that applies to all Lambda functions in this function definition version. Individual Lambda functions can override these settings.

        • Execution (dict) -- Configuration information that specifies how a Lambda function runs.

          • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

          • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

            • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

            • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

      • Functions (list) -- A list of Lambda functions in this function definition version.

        • (dict) -- Information about a Lambda function.

          • FunctionArn (string) -- The ARN of the Lambda function.

          • FunctionConfiguration (dict) -- The configuration of the Lambda function.

            • EncodingType (string) -- The expected encoding type of the input payload for the function. The default is ''json''.

            • Environment (dict) -- The environment configuration of the function.

              • AccessSysfs (boolean) -- If true, the Lambda function is allowed to access the host's /sys folder. Use this when the Lambda function needs to read device information from /sys. This setting applies only when you run the Lambda function in a Greengrass container.

              • Execution (dict) -- Configuration related to executing the Lambda function

                • IsolationMode (string) -- Specifies whether the Lambda function runs in a Greengrass container (default) or without containerization. Unless your scenario requires that you run without containerization, we recommend that you run in a Greengrass container. Omit this value to run the Lambda function with the default containerization for the group.

                • RunAs (dict) -- Specifies the user and group whose permissions are used when running the Lambda function. You can specify one or both values to override the default values. We recommend that you avoid running as root unless absolutely necessary to minimize the risk of unintended changes or malicious attacks. To run as root, you must set ''IsolationMode'' to ''NoContainer'' and update config.json in ''greengrass-root/config'' to set ''allowFunctionsToRunAsRoot'' to ''yes''.

                  • Gid (integer) -- The group ID whose permissions are used to run a Lambda function.

                  • Uid (integer) -- The user ID whose permissions are used to run a Lambda function.

              • ResourceAccessPolicies (list) -- A list of the resources, with their permissions, to which the Lambda function will be granted access. A Lambda function can have at most 10 resources. ResourceAccessPolicies apply only when you run the Lambda function in a Greengrass container.

                • (dict) -- A policy used by the function to access a resource.

                  • Permission (string) -- The permissions that the Lambda function has to the resource. Can be one of ''rw'' (read/write) or ''ro'' (read-only).

                  • ResourceId (string) -- The ID of the resource. (This ID is assigned to the resource when you create the resource definiton.)

              • Variables (dict) -- Environment variables for the Lambda function's configuration.

                • (string) --

                  • (string) --

            • ExecArgs (string) -- The execution arguments.

            • Executable (string) -- The name of the function executable.

            • MemorySize (integer) -- The memory size, in KB, which the function requires. This setting is not applicable and should be cleared when you run the Lambda function without containerization.

            • Pinned (boolean) -- True if the function is pinned. Pinned means the function is long-lived and starts when the core starts.

            • Timeout (integer) -- The allowed function execution time, after which Lambda should terminate the function. This timeout still applies to pinned Lambda functions for each request.

          • Id (string) -- A descriptive or arbitrary ID for the function. This value must be unique within the function definition version. Max length is 128 characters with pattern ''[a-zA-Z0-9:_-]+''.

    • Id (string) -- The ID of the function definition version.

    • NextToken (string) -- The token for the next set of results, or ''null'' if there are no additional results.

    • Version (string) -- The version of the function definition version.