diff options
| -rw-r--r-- | searx/engines/duckduckgo.py | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/searx/engines/duckduckgo.py b/searx/engines/duckduckgo.py index 62e1603a6..2b6888af7 100644 --- a/searx/engines/duckduckgo.py +++ b/searx/engines/duckduckgo.py @@ -63,14 +63,16 @@ url = "https://html.duckduckgo.com/html" time_range_dict = {'day': 'd', 'week': 'w', 'month': 'm', 'year': 'y'} form_data = {'v': 'l', 'api': 'd.js', 'o': 'json'} -CACHE: EngineCache +_CACHE: EngineCache = None # type: ignore """Persistent (SQLite) key/value cache that deletes its values after ``expire`` seconds.""" -def init(_): # pylint: disable=unused-argument - global CACHE # pylint: disable=global-statement - CACHE = EngineCache("duckduckgo") # type:ignore +def get_cache(): + global _CACHE # pylint: disable=global-statement + if _CACHE is None: + _CACHE = EngineCache("duckduckgo") # type:ignore + return _CACHE def get_vqd(query: str, region: str, force_request: bool = False) -> str: @@ -105,8 +107,9 @@ def get_vqd(query: str, region: str, force_request: bool = False) -> str: seems the block list is a sliding window: to get my IP rid from the bot list I had to cool down my IP for 1h (send no requests from that IP to DDG). """ - key = CACHE.secret_hash(f"{query}//{region}") - value = CACHE.get(key=key) + cache = get_cache() + key = cache.secret_hash(f"{query}//{region}") + value = cache.get(key=key) if value is not None and not force_request: logger.debug("vqd: re-use cached value: %s", value) return value @@ -124,15 +127,16 @@ def get_vqd(query: str, region: str, force_request: bool = False) -> str: logger.error("vqd: got HTTP %s from duckduckgo.com", resp.status_code) if value: - CACHE.set(key=key, value=value) + cache.set(key=key, value=value) else: logger.error("vqd value from duckduckgo.com ", resp.status_code) return value def set_vqd(query: str, region: str, value: str): - key = CACHE.secret_hash(f"{query}//{region}") - CACHE.set(key=key, value=value, expire=3600) + cache = get_cache() + key = cache.secret_hash(f"{query}//{region}") + cache.set(key=key, value=value, expire=3600) def get_ddg_lang(eng_traits: EngineTraits, sxng_locale, default='en_US'): |