airflow.providers.amazon.aws.transfers.dynamodb_to_s3
¶
Module Contents¶
Classes¶
Custom json encoder implementation. |
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Replicates records from a DynamoDB table to S3. |
- class airflow.providers.amazon.aws.transfers.dynamodb_to_s3.JSONEncoder(*, skipkeys=False, ensure_ascii=True, check_circular=True, allow_nan=True, sort_keys=False, indent=None, separators=None, default=None)[source]¶
Bases:
json.JSONEncoder
Custom json encoder implementation.
- class airflow.providers.amazon.aws.transfers.dynamodb_to_s3.DynamoDBToS3Operator(*, dynamodb_table_name, s3_bucket_name, file_size=1000, dynamodb_scan_kwargs=None, s3_key_prefix='', process_func=_convert_item_to_json_bytes, point_in_time_export=False, export_time=None, export_format='DYNAMODB_JSON', export_table_to_point_in_time_kwargs=None, check_interval=30, max_attempts=60, **kwargs)[source]¶
Bases:
airflow.providers.amazon.aws.transfers.base.AwsToAwsBaseOperator
Replicates records from a DynamoDB table to S3.
It scans a DynamoDB table and writes the received records to a file on the local filesystem. It flushes the file to S3 once the file size exceeds the file size limit specified by the user.
Users can also specify a filtering criteria using dynamodb_scan_kwargs to only replicate records that satisfy the criteria.
See also
For more information on how to use this operator, take a look at the guide: Amazon DynamoDB To Amazon S3 transfer operator
- Parameters
dynamodb_table_name (str) – Dynamodb table to replicate data from
s3_bucket_name (str) – S3 bucket to replicate data to
file_size (int) – Flush file to s3 if file size >= file_size
dynamodb_scan_kwargs (dict[str, Any] | None) – kwargs pass to <https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/dynamodb.html#DynamoDB.Table.scan>
s3_key_prefix (str) – Prefix of s3 object key
process_func (Callable[[dict[str, Any]], bytes]) – How we transform a dynamodb item to bytes. By default, we dump the json
point_in_time_export (bool) – Boolean value indicating the operator to use ‘scan’ or ‘point in time export’
export_time (datetime.datetime | None) – Time in the past from which to export table data, counted in seconds from the start of the Unix epoch. The table export will be a snapshot of the table’s state at this point in time.
export_format (str) – The format for the exported data. Valid values for ExportFormat are DYNAMODB_JSON or ION.
export_table_to_point_in_time_kwargs (dict | None) – extra parameters for the boto3 export_table_to_point_in_time function all. e.g. ExportType, IncrementalExportSpecification
check_interval (int) – The amount of time in seconds to wait between attempts. Only if
export_time
is provided.max_attempts (int) – The maximum number of attempts to be made. Only if
export_time
is provided.