将 UpdateApplication 和 AWS SDK 结合使用

此示例将更新在现有应用程序中运行的代码。

class KinesisAnalyticsApplicationV2:
    """Encapsulates Kinesis Data Analytics application functions."""

    def __init__(self, analytics_client):
        """
        :param analytics_client: A Boto3 Kinesis Data Analytics v2 client.
        """
        self.analytics_client = analytics_client
        self.name = None
        self.arn = None
        self.version_id = None
        self.create_timestamp = None


    def update_code(self, code):
        """
        Updates the code that runs in the application. The code must run in the
        runtime environment of the application, such as SQL. Application code
        typically reads data from in-application streams and transforms it in some way.

        :param code: The code to upload. This completely replaces any existing code
                     in the application.
        :return: Metadata about the application.
        """
        try:
            response = self.analytics_client.update_application(
                ApplicationName=self.name,
                CurrentApplicationVersionId=self.version_id,
                ApplicationConfigurationUpdate={
                    "ApplicationCodeConfigurationUpdate": {
                        "CodeContentTypeUpdate": "PLAINTEXT",
                        "CodeContentUpdate": {"TextContentUpdate": code},
                    }
                },
            )
            details = response["ApplicationDetail"]
            self.version_id = details["ApplicationVersionId"]
            logger.info("Update code for application %s.", self.name)
        except ClientError:
            logger.exception("Couldn't update code for application %s.", self.name)
            raise
        else:
            return details