[enh] use one single http connection pool : improve response time. close #100

searx/poolrequests.py

@@ -0,0 +1,61 @@
+import requests
+
+
+the_http_adapter = requests.adapters.HTTPAdapter(pool_connections=100)
+the_https_adapter = requests.adapters.HTTPAdapter(pool_connections=100)
+
+
+class SessionSinglePool(requests.Session):
+
+    def __init__(self):
+        global the_https_adapter, the_http_adapter
+        super(SessionSinglePool, self).__init__()
+
+        # reuse the same adapters
+        self.adapters.clear()
+        self.mount('https://', the_https_adapter)
+        self.mount('http://', the_http_adapter)
+
+    def close(self):
+        """Call super, but clear adapters since there are managed globaly"""
+        self.adapters.clear()
+        super(SessionSinglePool, self).close()
+
+
+def request(method, url, **kwargs):
+    """same as requests/requests/api.py request(...) except it use SessionSinglePool"""
+    session = SessionSinglePool()
+    response = session.request(method=method, url=url, **kwargs)
+    session.close()
+    return response
+
+
+def get(url, **kwargs):
+    kwargs.setdefault('allow_redirects', True)
+    return request('get', url, **kwargs)
+
+
+def options(url, **kwargs):
+    kwargs.setdefault('allow_redirects', True)
+    return request('options', url, **kwargs)
+
+
+def head(url, **kwargs):
+    kwargs.setdefault('allow_redirects', False)
+    return request('head', url, **kwargs)
+
+
+def post(url, data=None, json=None, **kwargs):
+    return request('post', url, data=data, json=json, **kwargs)
+
+
+def put(url, data=None, **kwargs):
+    return request('put', url, data=data, **kwargs)
+
+
+def patch(url, data=None, **kwargs):
+    return request('patch', url, data=data, **kwargs)
+
+
+def delete(url, **kwargs):
+    return request('delete', url, **kwargs)