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import logging | |
from airflow.hooks.postgres_hook import PostgresHook | |
from airflow.models import BaseOperator | |
from airflow.utils.decorators import apply_defaults | |
class SelectPostgresOperator(BaseOperator): | |
""" | |
Executes sql code in a specific Postgres database | |
and returns table result as a pandas dataframe | |
:param postgres_conn_id: reference to a specific postgres database | |
:type postgres_conn_id: string | |
:param sql: the sql code to be executed | |
:type sql: Can receive a str representing a sql statement, | |
a list of str (sql statements), or reference to a template file. | |
Template reference are recognized by str ending in '.sql' | |
""" | |
template_fields = ('sql',) | |
template_ext = ('.sql',) | |
ui_color = '#ededed' | |
@apply_defaults | |
def __init__( | |
self, sql, | |
postgres_conn_id='select_postgres_default', autocommit=False, | |
parameters=None, | |
*args, **kwargs): | |
super(SelectPostgresOperator, self).__init__(*args, **kwargs) | |
self.sql = sql | |
self.postgres_conn_id = postgres_conn_id | |
self.hook = PostgresHook(postgres_conn_id=self.postgres_conn_id) | |
self.autocommit = autocommit | |
self.parameters = parameters | |
def execute(self, context): | |
logging.info("Executing: " + str(self.sql)) | |
df = self.hook.get_pandas_df(self.sql, parameters=self.parameters) | |
logging.info("Result count: {0}".format(len(df))) | |
return df |
@fpopic is this code finally worked for you? Have you updated the correct version? I have exactly the same issue..
I think it did. You can see in revisions https://gist.github.com/fpopic/35807489d9c36c7ea8bc4de6f966b5fc/revisions that I swapped 32 and 34 lines. :) Didn't use for a while so don't know what's the state today.
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I am using airflow 2.0.2, and this is my modification, is this ok?