Source code for airflow.providers.apache.pig.operators.pig

# 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
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
from __future__ import annotations

import re
from typing import TYPE_CHECKING, Any, Sequence

from airflow.models import BaseOperator
from airflow.providers.apache.pig.hooks.pig import PigCliHook

    from airflow.utils.context import Context

[docs]class PigOperator(BaseOperator): """ Executes pig script. :param pig: the pig latin script to be executed. (templated) :param pig_cli_conn_id: reference to the Hive database :param pigparams_jinja_translate: when True, pig params-type templating ${var} gets translated into jinja-type templating {{ var }}. Note that you may want to use this along with the ``DAG(user_defined_macros=myargs)`` parameter. View the DAG object documentation for more details. :param pig_opts: pig options, such as: -x tez, -useHCatalog, ... - space separated list :param pig_properties: pig properties, additional pig properties passed as list """
[docs] template_fields: Sequence[str] = ("pig", "pig_opts", "pig_properties")
[docs] template_ext: Sequence[str] = ( ".pig", ".piglatin",
[docs] ui_color = "#f0e4ec"
def __init__( self, *, pig: str, pig_cli_conn_id: str = "pig_cli_default", pigparams_jinja_translate: bool = False, pig_opts: str | None = None, pig_properties: list[str] | None = None, **kwargs: Any, ) -> None: super().__init__(**kwargs) self.pigparams_jinja_translate = pigparams_jinja_translate self.pig = pig self.pig_cli_conn_id = pig_cli_conn_id self.pig_opts = pig_opts self.pig_properties = pig_properties self.hook: PigCliHook | None = None
[docs] def prepare_template(self): if self.pigparams_jinja_translate: self.pig = re.sub(r"(\$([a-zA-Z_][a-zA-Z0-9_]*))", r"{{ \g<2> }}", self.pig)
[docs] def execute(self, context: Context):"Executing: %s", self.pig) self.hook = PigCliHook(pig_cli_conn_id=self.pig_cli_conn_id, pig_properties=self.pig_properties) self.hook.run_cli(pig=self.pig, pig_opts=self.pig_opts)
[docs] def on_kill(self): self.hook.kill()

Was this entry helpful?