mirror of
https://github.com/LibreTranslate/LibreTranslate.git
synced 2024-05-03 09:58:54 +00:00
113 lines
3.7 KiB
Python
113 lines
3.7 KiB
Python
import os
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import sqlite3
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import uuid
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import requests
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from expiringdict import ExpiringDict
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from libretranslate.default_values import DEFAULT_ARGUMENTS as DEFARGS
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DEFAULT_DB_PATH = DEFARGS['API_KEYS_DB_PATH']
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class Database:
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def __init__(self, db_path=DEFAULT_DB_PATH, max_cache_len=1000, max_cache_age=30):
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# Legacy check - this can be removed at some point in the near future
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if os.path.isfile("api_keys.db") and not os.path.isfile("db/api_keys.db"):
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print("Migrating {} to {}".format("api_keys.db", "db/api_keys.db"))
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try:
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os.rename("api_keys.db", "db/api_keys.db")
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except Exception as e:
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print(str(e))
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db_dir = os.path.dirname(db_path)
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if db_dir != '' and not os.path.exists(db_dir):
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os.makedirs(db_dir)
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self.db_path = db_path
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self.cache = ExpiringDict(max_len=max_cache_len, max_age_seconds=max_cache_age)
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# Make sure to do data synchronization on writes!
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self.c = sqlite3.connect(db_path, check_same_thread=False)
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self.c.execute(
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"""CREATE TABLE IF NOT EXISTS api_keys (
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"api_key" TEXT NOT NULL,
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"req_limit" INTEGER NOT NULL,
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"char_limit" INTEGER DEFAULT NULL,
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PRIMARY KEY("api_key")
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);"""
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)
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# Schema/upgrade checks
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schema = self.c.execute("SELECT sql FROM sqlite_master WHERE type='table' AND name='api_keys';").fetchone()[0]
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if '"char_limit" INTEGER DEFAULT NULL' not in schema:
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self.c.execute('ALTER TABLE api_keys ADD COLUMN "char_limit" INTEGER DEFAULT NULL;')
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def lookup(self, api_key):
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val = self.cache.get(api_key)
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if val is None:
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# DB Lookup
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stmt = self.c.execute(
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"SELECT req_limit, char_limit FROM api_keys WHERE api_key = ?", (api_key,)
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)
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row = stmt.fetchone()
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if row is not None:
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self.cache[api_key] = row
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val = row
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else:
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self.cache[api_key] = False
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val = False
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if isinstance(val, bool):
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val = None
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return val
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def add(self, req_limit, api_key="auto", char_limit=None):
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if api_key == "auto":
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api_key = str(uuid.uuid4())
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if char_limit == 0:
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char_limit = None
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self.remove(api_key)
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self.c.execute(
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"INSERT INTO api_keys (api_key, req_limit, char_limit) VALUES (?, ?, ?)",
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(api_key, req_limit, char_limit),
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)
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self.c.commit()
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return (api_key, req_limit, char_limit)
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def remove(self, api_key):
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self.c.execute("DELETE FROM api_keys WHERE api_key = ?", (api_key,))
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self.c.commit()
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return api_key
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def all(self):
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row = self.c.execute("SELECT api_key, req_limit, char_limit FROM api_keys")
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return row.fetchall()
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class RemoteDatabase:
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def __init__(self, url, max_cache_len=1000, max_cache_age=600):
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self.url = url
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self.cache = ExpiringDict(max_len=max_cache_len, max_age_seconds=max_cache_age)
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def lookup(self, api_key):
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val = self.cache.get(api_key)
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if val is None:
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try:
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r = requests.post(self.url, data={'api_key': api_key}, timeout=60)
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res = r.json()
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except Exception as e:
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print("Cannot authenticate API key: " + str(e))
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return None
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if res.get('error') is not None:
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return None
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req_limit = res.get('req_limit', None)
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char_limit = res.get('char_limit', None)
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self.cache[api_key] = (req_limit, char_limit)
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return val
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