mirror of
https://github.com/searxng/searxng.git
synced 2025-07-11 23:39:18 +02:00
2fe8540903
Depending on the respective runtime behavior, it could happen that the initial loading of the DB tables in the cache was performed multiple times and in parallel. The concurrent accesses then led to the `sqlite3.OperationalError: database is locked` exception as in #4951. Since this problem depends significantly on the runtimes (e.g., how long it takes to retrieve the content for a table), this error could not be observed in all installations. Closes: https://github.com/searxng/searxng/issues/4951 Signed-off-by: Markus Heiser <markus.heiser@darmarit.de>
56 lines
1.8 KiB
Python
56 lines
1.8 KiB
Python
# SPDX-License-Identifier: AGPL-3.0-or-later
|
|
"""Simple implementation to store currencies data in a SQL database."""
|
|
|
|
from __future__ import annotations
|
|
|
|
__all__ = ["CurrenciesDB"]
|
|
|
|
import json
|
|
import pathlib
|
|
|
|
from .core import get_cache, log
|
|
|
|
|
|
class CurrenciesDB:
|
|
# pylint: disable=missing-class-docstring
|
|
|
|
ctx_names = "data_currencies_names"
|
|
ctx_iso4217 = "data_currencies_iso4217"
|
|
|
|
json_file = pathlib.Path(__file__).parent / "currencies.json"
|
|
|
|
def __init__(self):
|
|
self.cache = get_cache()
|
|
|
|
def init(self):
|
|
if self.cache.properties("currencies loaded") != "OK":
|
|
# To avoid parallel initializations, the property is set first
|
|
self.cache.properties.set("currencies loaded", "OK")
|
|
self.load()
|
|
# F I X M E:
|
|
# do we need a maintenance .. rember: database is stored
|
|
# in /tmp and will be rebuild during the reboot anyway
|
|
|
|
def load(self):
|
|
log.debug("init searx.data.CURRENCIES")
|
|
with open(self.json_file, encoding="utf-8") as f:
|
|
data_dict = json.load(f)
|
|
for key, value in data_dict["names"].items():
|
|
self.cache.set(key=key, value=value, ctx=self.ctx_names, expire=None)
|
|
for key, value in data_dict["iso4217"].items():
|
|
self.cache.set(key=key, value=value, ctx=self.ctx_iso4217, expire=None)
|
|
|
|
def name_to_iso4217(self, name):
|
|
self.init()
|
|
|
|
ret_val = self.cache.get(key=name, default=name, ctx=self.ctx_names)
|
|
if isinstance(ret_val, list):
|
|
# if more alternatives, use the last in the list
|
|
ret_val = ret_val[-1]
|
|
return ret_val
|
|
|
|
def iso4217_to_name(self, iso4217, language):
|
|
self.init()
|
|
|
|
iso4217_languages: dict = self.cache.get(key=iso4217, default={}, ctx=self.ctx_iso4217)
|
|
return iso4217_languages.get(language, iso4217)
|