Source code for airflow.providers.postgres.operators.postgres

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from typing import Iterable, Mapping, Optional, Union

from airflow.models import BaseOperator
from airflow.providers.postgres.hooks.postgres import PostgresHook
from airflow.utils.decorators import apply_defaults


[docs]class PostgresOperator(BaseOperator):
    """
    Executes sql code in a specific Postgres database

    :param sql: the sql code to be executed. (templated)
    :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'
    :param postgres_conn_id: The :ref:`postgres conn id <howto/connection:postgres>`
        reference to a specific postgres database.
    :type postgres_conn_id: str
    :param autocommit: if True, each command is automatically committed.
        (default value: False)
    :type autocommit: bool
    :param parameters: (optional) the parameters to render the SQL query with.
    :type parameters: dict or iterable
    :param database: name of database which overwrite defined one in connection
    :type database: str
    """

[docs]    template_fields = ('sql',)
[docs]    template_fields_renderers = {'sql': 'sql'}
[docs]    template_ext = ('.sql',)
[docs]    ui_color = '#ededed'

    @apply_defaults
    def __init__(
        self,
        *,
        sql: str,
        postgres_conn_id: str = 'postgres_default',
        autocommit: bool = False,
        parameters: Optional[Union[Mapping, Iterable]] = None,
        database: Optional[str] = None,
        **kwargs,
    ) -> None:
        super().__init__(**kwargs)
        self.sql = sql
        self.postgres_conn_id = postgres_conn_id
        self.autocommit = autocommit
        self.parameters = parameters
        self.database = database
        self.hook = None

[docs]    def execute(self, context):
        self.log.info('Executing: %s', self.sql)
        self.hook = PostgresHook(postgres_conn_id=self.postgres_conn_id, schema=self.database)
        self.hook.run(self.sql, self.autocommit, parameters=self.parameters)
        for output in self.hook.conn.notices:
            self.log.info(output)