airflow.providers.presto.hooks.presto

Module Contents

Classes

PrestoHook

Interact with Presto through prestodb.

Functions

generate_presto_client_info()

Return json string with dag_id, task_id, execution_date and try_number

Attributes

DEFAULT_FORMAT_PREFIX

airflow.providers.presto.hooks.presto.DEFAULT_FORMAT_PREFIX = airflow.ctx.[source]
airflow.providers.presto.hooks.presto.generate_presto_client_info()[source]

Return json string with dag_id, task_id, execution_date and try_number

exception airflow.providers.presto.hooks.presto.PrestoException[source]

Bases: Exception

Presto exception

class airflow.providers.presto.hooks.presto.PrestoHook(*args, schema=None, **kwargs)[source]

Bases: airflow.hooks.dbapi.DbApiHook

Interact with Presto through prestodb.

>>> ph = PrestoHook()
>>> sql = "SELECT count(1) AS num FROM airflow.static_babynames"
>>> ph.get_records(sql)
[[340698]]
conn_name_attr = presto_conn_id[source]
default_conn_name = presto_default[source]
conn_type = presto[source]
hook_name = Presto[source]
get_conn(self)[source]

Returns a connection object

get_isolation_level(self)[source]

Returns an isolation level

insert_rows(self, table, rows, target_fields=None, commit_every=0, replace=False, **kwargs)[source]

A generic way to insert a set of tuples into a table.

Parameters

  • table (str) -- Name of the target table

  • rows (Iterable[tuple]) -- The rows to insert into the table

  • target_fields (Optional[Iterable[str]]) -- The names of the columns to fill in the table

  • commit_every (int) -- The maximum number of rows to insert in one transaction. Set to 0 to insert all rows in one transaction.

  • replace (bool) -- Whether to replace instead of insert

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