mirror of
https://github.com/searxng/searxng.git
synced 2024-11-09 06:30:10 +01:00
70 lines
1.7 KiB
Python
70 lines
1.7 KiB
Python
|
# SPDX-License-Identifier: AGPL-3.0-or-later
|
||
|
|
# lint: pylint
|
||
|
|
# pylint: disable=missing-function-docstring
|
||
|
|
"""PostgreSQL database (offline)
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
# import error is ignored because the admin has to install mysql manually to use
|
||
|
|
# the engine
|
||
|
|
import psycopg2 # pylint: disable=import-error
|
||
|
|
|
||
|
|
engine_type = 'offline'
|
||
|
|
host = "127.0.0.1"
|
||
|
|
port = "5432"
|
||
|
|
database = ""
|
||
|
|
username = ""
|
||
|
|
password = ""
|
||
|
|
query_str = ""
|
||
|
|
limit = 10
|
||
|
|
paging = True
|
||
|
|
result_template = 'key-value.html'
|
||
|
|
_connection = None
|
||
|
|
|
||
|
|
def init(engine_settings):
|
||
|
|
global _connection # pylint: disable=global-statement
|
||
|
|
|
||
|
|
if 'query_str' not in engine_settings:
|
||
|
|
raise ValueError('query_str cannot be empty')
|
||
|
|
|
||
|
|
if not engine_settings['query_str'].lower().startswith('select '):
|
||
|
|
raise ValueError('only SELECT query is supported')
|
||
|
|
|
||
|
|
_connection = psycopg2.connect(
|
||
|
|
database = database,
|
||
|
|
user = username,
|
||
|
|
password = password,
|
||
|
|
host = host,
|
||
|
|
port = port,
|
||
|
|
)
|
||
|
|
|
||
|
|
def search(query, params):
|
||
|
|
query_params = {'query': query}
|
||
|
|
query_to_run = (
|
||
|
|
query_str
|
||
|
|
+ ' LIMIT {0} OFFSET {1}'.format(limit, (params['pageno'] - 1) * limit)
|
||
|
|
)
|
||
|
|
|
||
|
|
with _connection:
|
||
|
|
with _connection.cursor() as cur:
|
||
|
|
cur.execute(query_to_run, query_params)
|
||
|
|
return _fetch_results(cur)
|
||
|
|
|
||
|
|
def _fetch_results(cur):
|
||
|
|
results = []
|
||
|
|
titles = []
|
||
|
|
|
||
|
|
try:
|
||
|
|
titles = [column_desc.name for column_desc in cur.description]
|
||
|
|
|
||
|
|
for res in cur:
|
||
|
|
result = dict(zip(titles, map(str, res)))
|
||
|
|
result['template'] = result_template
|
||
|
|
results.append(result)
|
||
|
|
|
||
|
|
# no results to fetch
|
||
|
|
except psycopg2.ProgrammingError:
|
||
|
|
pass
|
||
|
|
|
||
|
|
return results
|