SatishChGit commented on code in PR #39217: URL: https://github.com/apache/airflow/pull/39217#discussion_r1587808317
########## airflow/providers/teradata/transfers/azure_blob_to_teradata.py: ########## @@ -0,0 +1,105 @@ +# +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you under the Apache License, Version 2.0 (the +# "License"); you may not use this file except in compliance +# with the License. You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, +# software distributed under the License is distributed on an +# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +# KIND, either express or implied. See the License for the +# specific language governing permissions and limitations +# under the License. +from __future__ import annotations + +from typing import TYPE_CHECKING, Sequence + +from airflow.models import BaseOperator +from airflow.providers.microsoft.azure.hooks.wasb import WasbHook +from airflow.providers.teradata.hooks.teradata import TeradataHook + +if TYPE_CHECKING: + from airflow.utils.context import Context + + +class AzureBlobStorageToTeradataOperator(BaseOperator): + """ + + Loads CSV, JSON and Parquet format data from Azure Blob Storage to Teradata. + + .. seealso:: + For more information on how to use this operator, take a look at the guide: + :ref:`howto/operator:AzureBlobStorageToTeradataOperator` + + :param blob_source_key: The URI format specifying the location of the Azure blob object store.(templated) + The URI format is `/az/YOUR-STORAGE-ACCOUNT.blob.core.windows.net/YOUR-CONTAINER/YOUR-BLOB-LOCATION`. + Refer to + https://docs.teradata.com/search/documents?query=native+object+store&sort=last_update&virtual-field=title_only&content-lang=en-US + :param azure_conn_id: The Airflow WASB connection used for azure blob credentials. + :param teradata_table: The name of the teradata table to which the data is transferred.(templated) + :param teradata_conn_id: The connection ID used to connect to Teradata + :ref:`Teradata connection <howto/connection:Teradata>` + + Note that ``blob_source_key`` and ``teradata_table`` are + templated, so you can use variables in them if you wish. + """ + + template_fields: Sequence[str] = ("blob_source_key", "teradata_table") + ui_color = "#e07c24" + + def __init__( + self, + *, + blob_source_key: str, + azure_conn_id: str = "azure_default", + teradata_table: str, + teradata_conn_id: str = "teradata_default", + **kwargs, + ) -> None: + super().__init__(**kwargs) + self.blob_source_key = blob_source_key + self.azure_conn_id = azure_conn_id + self.teradata_table = teradata_table + self.teradata_conn_id = teradata_conn_id + + def execute(self, context: Context) -> None: + self.log.info( + "transferring data from %s to teradata table %s...", self.blob_source_key, self.teradata_table + ) + azure_hook = WasbHook(wasb_conn_id=self.azure_conn_id) + conn = azure_hook.get_connection(self.azure_conn_id) + # Obtaining the Azure client ID and Azure secret in order to access a specified Blob container + access_id = conn.login if conn.login is not None else "" + access_secret = conn.password if conn.password is not None else "" + teradata_hook = TeradataHook(teradata_conn_id=self.teradata_conn_id) + sql = f""" + CREATE MULTISET TABLE {self.teradata_table} AS + ( + SELECT * FROM ( + LOCATION = '{self.blob_source_key}' + ACCESS_ID= '{access_id}' + ACCESS_KEY= '{access_secret}' + ) AS d + ) WITH DATA + """ + try: + teradata_hook.run(sql, True) + except Exception as ex: + # Handling permission issue errors + if "Error 3524" in str(ex): + self.log.error("The user does not have CREATE TABLE access in teradata") + raise + if "Error 9134" in str(ex): + self.log.error( + "There is an issue with the transfer operation. Please validate azure and " + "teradata connection details." + ) + raise Review Comment: Agreed and removed additional checking of exceptions instead added log error for exception received. Teradata returning needed exception information. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
