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'''
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searx is free software: you can redistribute it and/or modify
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it under the terms of the GNU Affero General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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searx is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU Affero General Public License for more details.
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You should have received a copy of the GNU Affero General Public License
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along with searx. If not, see < http://www.gnu.org/licenses/ >.
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(C) 2013- by Adam Tauber, <asciimoo@gmail.com>
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'''
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from os.path import realpath, dirname, splitext, join
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import sys
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from imp import load_source
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from flask.ext.babel import gettext
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from operator import itemgetter
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from searx import settings
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engine_dir = dirname(realpath(__file__))
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engines = {}
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categories = {'general': []}
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engine_shortcuts = {}
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def load_module(filename):
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modname = splitext(filename)[0]
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if modname in sys.modules:
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del sys.modules[modname]
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filepath = join(engine_dir, filename)
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module = load_source(modname, filepath)
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module.name = modname
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return module
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def load_engine(engine_data):
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engine_name = engine_data['engine']
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engine = load_module(engine_name + '.py')
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for param_name in engine_data:
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if param_name == 'engine':
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continue
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if param_name == 'categories':
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if engine_data['categories'] == 'none':
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engine.categories = []
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else:
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engine.categories = map(
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str.strip, engine_data['categories'].split(','))
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continue
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setattr(engine, param_name, engine_data[param_name])
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if not hasattr(engine, 'paging'):
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engine.paging = False
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if not hasattr(engine, 'categories'):
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engine.categories = ['general']
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if not hasattr(engine, 'language_support'):
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# engine.language_support = False
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engine.language_support = True
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if not hasattr(engine, 'timeout'):
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# engine.language_support = False
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engine.timeout = settings['server']['request_timeout']
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if not hasattr(engine, 'shortcut'):
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# engine.shortcut = '''
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engine.shortcut = ''
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# checking required variables
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for engine_attr in dir(engine):
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if engine_attr.startswith('_'):
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continue
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if getattr(engine, engine_attr) is None:
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print('[E] Engine config error: Missing attribute "{0}.{1}"'
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.format(engine.name, engine_attr))
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sys.exit(1)
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engine.stats = {
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'result_count': 0,
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'search_count': 0,
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'page_load_time': 0,
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'score_count': 0,
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'errors': 0
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}
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if hasattr(engine, 'categories'):
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for category_name in engine.categories:
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categories.setdefault(category_name, []).append(engine)
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else:
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categories['general'].append(engine)
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if engine.shortcut:
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# TODO check duplications
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if engine.shortcut in engine_shortcuts:
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print('[E] Engine config error: ambigious shortcut: {0}'
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.format(engine.shortcut))
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sys.exit(1)
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engine_shortcuts[engine.shortcut] = engine.name
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return engine
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def get_engines_stats():
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# TODO refactor
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pageloads = []
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results = []
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scores = []
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errors = []
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scores_per_result = []
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max_pageload = max_results = max_score = max_errors = max_score_per_result = 0 # noqa
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for engine in engines.values():
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if engine.stats['search_count'] == 0:
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continue
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results_num = \
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engine.stats['result_count'] / float(engine.stats['search_count'])
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load_times = engine.stats['page_load_time'] / float(engine.stats['search_count']) # noqa
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if results_num:
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score = engine.stats['score_count'] / float(engine.stats['search_count']) # noqa
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score_per_result = score / results_num
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else:
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score = score_per_result = 0.0
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max_results = max(results_num, max_results)
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max_pageload = max(load_times, max_pageload)
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max_score = max(score, max_score)
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max_score_per_result = max(score_per_result, max_score_per_result)
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max_errors = max(max_errors, engine.stats['errors'])
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pageloads.append({'avg': load_times, 'name': engine.name})
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results.append({'avg': results_num, 'name': engine.name})
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scores.append({'avg': score, 'name': engine.name})
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errors.append({'avg': engine.stats['errors'], 'name': engine.name})
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scores_per_result.append({
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'avg': score_per_result,
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'name': engine.name
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})
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for engine in pageloads:
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if max_pageload:
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engine['percentage'] = int(engine['avg'] / max_pageload * 100)
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else:
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engine['percentage'] = 0
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for engine in results:
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if max_results:
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engine['percentage'] = int(engine['avg'] / max_results * 100)
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else:
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engine['percentage'] = 0
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for engine in scores:
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if max_score:
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engine['percentage'] = int(engine['avg'] / max_score * 100)
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else:
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engine['percentage'] = 0
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for engine in scores_per_result:
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if max_score_per_result:
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engine['percentage'] = int(engine['avg']
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/ max_score_per_result * 100)
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else:
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engine['percentage'] = 0
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for engine in errors:
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if max_errors:
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engine['percentage'] = int(float(engine['avg']) / max_errors * 100)
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else:
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engine['percentage'] = 0
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return [
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(
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gettext('Page loads (sec)'),
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sorted(pageloads, key=itemgetter('avg'))
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),
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(
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gettext('Number of results'),
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sorted(results, key=itemgetter('avg'), reverse=True)
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),
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(
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gettext('Scores'),
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sorted(scores, key=itemgetter('avg'), reverse=True)
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),
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(
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gettext('Scores per result'),
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sorted(scores_per_result, key=itemgetter('avg'), reverse=True)
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),
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(
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gettext('Errors'),
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sorted(errors, key=itemgetter('avg'), reverse=True)
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),
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]
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if 'engines' not in settings or not settings['engines']:
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print '[E] Error no engines found. Edit your settings.yml'
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exit(2)
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for engine_data in settings['engines']:
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engine = load_engine(engine_data)
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engines[engine.name] = engine
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