get_parameter_history

SSM.Client.get_parameter_history(**kwargs)

Retrieves the history of all changes to a parameter.

Warning

If you change the KMS key alias for the KMS key used to encrypt a parameter, then you must also update the key alias the parameter uses to reference KMS. Otherwise, GetParameterHistory retrieves whatever the original key alias was referencing.

See also: AWS API Documentation

Request Syntax

response = client.get_parameter_history(
    Name='string',
    WithDecryption=True|False,
    MaxResults=123,
    NextToken='string'
)

Parameters

• Name (string) --

  [REQUIRED]

  The name of the parameter for which you want to review history.

• WithDecryption (boolean) -- Return decrypted values for secure string parameters. This flag is ignored for String and StringList parameter types.
• MaxResults (integer) -- The maximum number of items to return for this call. The call also returns a token that you can specify in a subsequent call to get the next set of results.
• NextToken (string) -- The token for the next set of items to return. (You received this token from a previous call.)

Return type

dict

Returns

Response Syntax

{
    'Parameters': [
        {
            'Name': 'string',
            'Type': 'String'|'StringList'|'SecureString',
            'KeyId': 'string',
            'LastModifiedDate': datetime(2015, 1, 1),
            'LastModifiedUser': 'string',
            'Description': 'string',
            'Value': 'string',
            'AllowedPattern': 'string',
            'Version': 123,
            'Labels': [
                'string',
            ],
            'Tier': 'Standard'|'Advanced'|'Intelligent-Tiering',
            'Policies': [
                {
                    'PolicyText': 'string',
                    'PolicyType': 'string',
                    'PolicyStatus': 'string'
                },
            ],
            'DataType': 'string'
        },
    ],
    'NextToken': 'string'
}

Response Structure

• (dict) --

  • Parameters (list) --

    A list of parameters returned by the request.

    • (dict) --

      Information about parameter usage.

      • Name (string) --

        The name of the parameter.

      • Type (string) --

        The type of parameter used.

      • KeyId (string) --

        The ID of the query key used for this parameter.

      • LastModifiedDate (datetime) --

        Date the parameter was last changed or updated.

      • LastModifiedUser (string) --

        Amazon Resource Name (ARN) of the Amazon Web Services user who last changed the parameter.

      • Description (string) --

        Information about the parameter.

      • Value (string) --

        The parameter value.

      • AllowedPattern (string) --

        Parameter names can include the following letters and symbols.

        a-zA-Z0-9_.-

      • Version (integer) --

        The parameter version.

      • Labels (list) --

        Labels assigned to the parameter version.

        • (string) --

      • Tier (string) --

        The parameter tier.

      • Policies (list) --

        Information about the policies assigned to a parameter.

        Assigning parameter policies in the Amazon Web Services Systems Manager User Guide .

        • (dict) --

          One or more policies assigned to a parameter.

          • PolicyText (string) --

            The JSON text of the policy.

          • PolicyType (string) --

            The type of policy. Parameter Store, a capability of Amazon Web Services Systems Manager, supports the following policy types: Expiration, ExpirationNotification, and NoChangeNotification.

          • PolicyStatus (string) --

            The status of the policy. Policies report the following statuses: Pending (the policy hasn't been enforced or applied yet), Finished (the policy was applied), Failed (the policy wasn't applied), or InProgress (the policy is being applied now).

      • DataType (string) --

        The data type of the parameter, such as text or aws:ec2:image . The default is text .

  • NextToken (string) --

    The token to use when requesting the next set of items. If there are no additional items to return, the string is empty.

Exceptions

• SSM.Client.exceptions.InternalServerError
• SSM.Client.exceptions.ParameterNotFound
• SSM.Client.exceptions.InvalidNextToken
• SSM.Client.exceptions.InvalidKeyId