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from os.path import realpath, dirname, splitext, join
from os import listdir
from imp import load_source
import grequests
engine_dir = dirname(realpath(__file__))
engines = {}
for filename in listdir(engine_dir):
modname = splitext(filename)[0]
if filename.startswith('_') or not filename.endswith('.py'):
continue
filepath = join(engine_dir, filename)
engine = load_source(modname, filepath)
if not hasattr(engine, 'request') or not hasattr(engine, 'response'):
continue
engines[modname] = engine
def default_request_params():
return {'method': 'GET', 'headers': {}, 'data': {}, 'url': ''}
def make_callback(engine_name, results, callback):
def process_callback(response, **kwargs):
for result in callback(response):
result['engine'] = engine_name
results.append(result)
return process_callback
def search(query, request):
global engines
requests = []
results = []
user_agent = request.headers.get('User-Agent', '')
for ename, engine in engines.items():
headers = default_request_params()
headers['User-Agent'] = user_agent
request_params = engine.request(query, headers)
callback = make_callback(ename, results, engine.response)
if request_params['method'] == 'GET':
req = grequests.get(request_params['url']
,headers=headers
,hooks=dict(response=callback)
)
else:
req = grequests.post(request_params['url']
,data=request_params['data']
,headers=headers
,hooks=dict(response=callback)
)
requests.append(req)
grequests.map(requests)
return results
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