[ aws . greengrassv2 ]

list-installed-components

Description

Retrieves a paginated list of the components that a Greengrass core device runs. This list doesn’t include components that are deployed from local deployments or components that are deployed as dependencies of other components.

Note

IoT Greengrass relies on individual devices to send status updates to the Amazon Web Services Cloud. If the IoT Greengrass Core software isn’t running on the device, or if device isn’t connected to the Amazon Web Services Cloud, then the reported status of that device might not reflect its current status. The status timestamp indicates when the device status was last updated.

Core devices send status updates at the following times:

• When the IoT Greengrass Core software starts

• When the core device receives a deployment from the Amazon Web Services Cloud

• When the status of any component on the core device becomes BROKEN

• At a regular interval that you can configure , which defaults to 24 hours

See also: AWS API Documentation

See ‘aws help’ for descriptions of global parameters.

list-installed-components is a paginated operation. Multiple API calls may be issued in order to retrieve the entire data set of results. You can disable pagination by providing the --no-paginate argument. When using --output text and the --query argument on a paginated response, the --query argument must extract data from the results of the following query expressions: installedComponents

Synopsis

  list-installed-components
--core-device-thing-name <value>
[--cli-input-json | --cli-input-yaml]
[--starting-token <value>]
[--page-size <value>]
[--max-items <value>]
[--generate-cli-skeleton <value>]

Options

--core-device-thing-name (string)

The name of the core device. This is also the name of the IoT thing.

--cli-input-json | --cli-input-yaml (string) Reads arguments from the JSON string provided. The JSON string follows the format provided by --generate-cli-skeleton. If other arguments are provided on the command line, those 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. This may not be specified along with --cli-input-yaml.

--starting-token (string)

A token to specify where to start paginating. This is the NextToken from a previously truncated response.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--page-size (integer)

The size of each page to get in the AWS service call. This does not affect the number of items returned in the command’s output. Setting a smaller page size results in more calls to the AWS service, retrieving fewer items in each call. This can help prevent the AWS service calls from timing out.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--max-items (integer)

The total number of items to return in the command’s output. If the total number of items available is more than the value specified, a NextToken is provided in the command’s output. To resume pagination, provide the NextToken value in the starting-token argument of a subsequent command. Do not use the NextToken response element directly outside of the AWS CLI.

For usage examples, see Pagination in the AWS Command Line Interface User Guide .

--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. Similarly, if provided yaml-input it will print a sample input YAML that can be used with --cli-input-yaml. If provided with the value output, it validates the command inputs and returns a sample output JSON for that command.

See ‘aws help’ for descriptions of global parameters.

Examples

To list components installed on a core device

The following list-installed-components example lists the components that are installed on an AWS IoT Greengrass core device.

aws greengrassv2 list-installed-components \
    --core-device-thing-name MyGreengrassCore

Output:

{
    "installedComponents": [
        {
            "componentName": "aws.greengrass.Cli",
            "componentVersion": "2.0.3",
            "lifecycleState": "RUNNING",
            "isRoot": true
        },
        {
            "componentName": "aws.greengrass.Nucleus",
            "componentVersion": "2.0.3",
            "lifecycleState": "FINISHED",
            "isRoot": true
        }
    ]
}

For more information, see Check core device status in the AWS IoT Greengrass V2 Developer Guide.

Output

installedComponents -> (list)

A list that summarizes each component on the core device.

(structure)

Contains information about a component on a Greengrass core device.

componentName -> (string)

The name of the component.

componentVersion -> (string)

The version of the component.

lifecycleState -> (string)

The lifecycle state of the component.

lifecycleStateDetails -> (string)

The details about the lifecycle state of the component.

isRoot -> (boolean)

Whether or not the component is a root component.

nextToken -> (string)

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