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[ aws . greengrass ]

create-subscription-definition¶

Description¶

Creates a subscription definition. You may provide the initial version of the subscription definition now or use ''CreateSubscriptionDefinitionVersion'' at a later time.

Synopsis¶

  create-subscription-definition
[--amzn-client-token <value>]
[--initial-version <value>]
[--name <value>]
[--tags <value>]
[--cli-input-json <value>]
[--generate-cli-skeleton <value>]
[--debug]
[--endpoint-url <value>]
[--no-verify-ssl]
[--no-paginate]
[--output <value>]
[--query <value>]
[--profile <value>]
[--region <value>]
[--version <value>]
[--color <value>]
[--no-sign-request]
[--ca-bundle <value>]
[--cli-read-timeout <value>]
[--cli-connect-timeout <value>]

Options¶

--amzn-client-token (string) A client token used to correlate requests and responses.

--initial-version (structure) Information about the initial version of the subscription definition.Subscriptions -> (list)

A list of subscriptions.

(structure)

Information about a subscription.

Id -> (string)

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

Source -> (string)

The source of the subscription. Can be a thing ARN, a Lambda function ARN, a connector ARN, 'cloud' (which represents the AWS IoT cloud), or 'GGShadowService'.

Subject -> (string)

The MQTT topic used to route the message.

Target -> (string)

Where the message is sent to. Can be a thing ARN, a Lambda function ARN, a connector ARN, 'cloud' (which represents the AWS IoT cloud), or 'GGShadowService'.

Shorthand Syntax:

Subscriptions=[{Id=string,Source=string,Subject=string,Target=string},{Id=string,Source=string,Subject=string,Target=string}]

JSON Syntax:

{
  "Subscriptions": [
    {
      "Id": "string",
      "Source": "string",
      "Subject": "string",
      "Target": "string"
    }
    ...
  ]
}

--name (string) The name of the subscription definition.

--tags (map) Tag(s) to add to the new resource.key -> (string)

value -> (string)

Shorthand Syntax:

KeyName1=string,KeyName2=string

JSON Syntax:

{"string": "string"
  ...}

--cli-input-json (string) Performs service operation based on the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, the CLI values will override the JSON-provided values. It is not possible to pass arbitrary binary values using a JSON-provided value as the string will be taken literally.

--generate-cli-skeleton (string) Prints a JSON skeleton to standard output without sending an API request. If provided with no value or the value input, prints a sample input JSON that can be used as an argument for --cli-input-json. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

Global Options¶

--debug (boolean)

Turn on debug logging.

--endpoint-url (string)

Override command's default URL with the given URL.

--no-verify-ssl (boolean)

By default, the AWS CLI uses SSL when communicating with AWS services. For each SSL connection, the AWS CLI will verify SSL certificates. This option overrides the default behavior of verifying SSL certificates.

--no-paginate (boolean)

Disable automatic pagination.

--output (string)

The formatting style for command output.

json
text
table

--query (string)

A JMESPath query to use in filtering the response data.

--profile (string)

Use a specific profile from your credential file.

--region (string)

The region to use. Overrides config/env settings.

--version (string)

Display the version of this tool.

--color (string)

Turn on/off color output.

on
off
auto

--no-sign-request (boolean)

Do not sign requests. Credentials will not be loaded if this argument is provided.

--ca-bundle (string)

The CA certificate bundle to use when verifying SSL certificates. Overrides config/env settings.

--cli-read-timeout (int)

The maximum socket read time in seconds. If the value is set to 0, the socket read will be blocking and not timeout. The default value is 60 seconds.

--cli-connect-timeout (int)

The maximum socket connect time in seconds. If the value is set to 0, the socket connect will be blocking and not timeout. The default value is 60 seconds.

Examples¶

Note

To use the following examples, you must have the AWS CLI installed and configured. See the Getting started guide in the AWS CLI User Guide for more information.

Unless otherwise stated, all examples have unix-like quotation rules. These examples will need to be adapted to your terminal's quoting rules. See Using quotation marks with strings in the AWS CLI User Guide .

To create a subscription definition

The following create-subscription-definition example creates a subscription definition and specifies its initial version. The initial version contains three subscriptions: one for the MQTT topic to which the connector subscribes, one to allow a function to receive temperature readings from AWS IoT, and one to allow AWS IoT to receive status information from the connector. The example provides the ARN for the Lambda function alias that was created earlier by using Lambda's create-alias command.

aws greengrass create-subscription-definition \
    --initial-version "{\"Subscriptions\": [{\"Id\": \"TriggerNotification\", \"Source\": \"arn:aws:lambda:us-west-2:123456789012:function:TempMonitor:GG_TempMonitor\", \"Subject\": \"twilio/txt\", \"Target\": \"arn:aws:greengrass:us-west-2::/connectors/TwilioNotifications/versions/1\"},{\"Id\": \"TemperatureInput\", \"Source\": \"cloud\", \"Subject\": \"temperature/input\", \"Target\": \"arn:aws:lambda:us-west-2:123456789012:function:TempMonitor:GG_TempMonitor\"},{\"Id\": \"OutputStatus\", \"Source\": \"arn:aws:greengrass:us-west-2::/connectors/TwilioNotifications/versions/1\", \"Subject\": \"twilio/message/status\", \"Target\": \"cloud\"}]}"

Output:

{
    "Arn": "arn:aws:greengrass:us-west-2:123456789012:/greengrass/definition/subscriptions/9d611d57-5d5d-44bd-a3b4-feccbdd69112",
    "CreationTimestamp": "2019-06-19T22:34:26.677Z",
    "Id": "9d611d57-5d5d-44bd-a3b4-feccbdd69112",
    "LastUpdatedTimestamp": "2019-06-19T22:34:26.677Z",
    "LatestVersion": "aa645c47-ac90-420d-9091-8c7ffa4f103f",
    "LatestVersionArn": "arn:aws:greengrass:us-west-2:123456789012:/greengrass/definition/subscriptions/9d611d57-5d5d-44bd-a3b4-feccbdd69112/versions/aa645c47-ac90-420d-9091-8c7ffa4f103f"
}

For more information, see Getting Started with Connectors (CLI) in the AWS IoT Greengrass Developer Guide.

Output¶

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 ID of the latest version associated with the definition.

LatestVersionArn -> (string)

The ARN of the latest version associated with the definition.

Name -> (string)

The name of the definition.

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