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# -*- coding: utf-8 -*- |
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import datetime |
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import json |
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import transaction |
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from pyjobs_crawlers.run import Connector |
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from sqlalchemy.orm.exc import NoResultFound |
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from pyjobsweb import model |
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from pyjobsweb.model import DBSession, Log |
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__all__ = ('helpers', 'app_globals') |
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class PyJobsWebConnector(Connector): |
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def add_job(self, job_item): |
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""" |
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Add job to PyJobsWeb database |
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:param job_item: Scrapy pyjobs_crawlers item object |
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:return: |
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""" |
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job_public_id = job_item['url'] |
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if self.job_exist(job_public_id): |
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print 'Skip existing item' |
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return |
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job = model.JobAlchemy() |
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# Populate attributes which do not require special treatments before |
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# population |
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attributes = ['title', 'description', 'company', 'address', |
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'company_url', 'publication_datetime', |
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'publication_datetime_is_fake'] |
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# Populate job attributes if item contain it |
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for attribute in attributes: |
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if attribute in job_item: |
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setattr(job, attribute, job_item[attribute]) |
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job.url = job_item['url'] |
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job.source = job_item['source'] |
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job.crawl_datetime = job_item['initial_crawl_datetime'] |
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# Populate attributes which require special treatments before population |
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if 'tags' in job_item: |
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tags = [{'tag': t.tag, 'weight': t.weight} |
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for t in job_item['tags']] |
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job.tags = json.dumps(tags) |
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# Insert the job offer in the Postgresql database |
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DBSession.add(job) |
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transaction.commit() |
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def job_exist(self, job_url): |
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""" |
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Return count of jobs having this url |
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:param job_url: External identifier of job (url) |
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:return: |
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""" |
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return model.JobAlchemy.job_offer_exists(job_url) |
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def log(self, source, action, more=None): |
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if more is not None: |
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message = '%s (%s)' % (action, more) |
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else: |
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message = action |
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log = Log() |
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log.source = source |
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log.message = message |
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log.datetime = datetime.datetime.now() |
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DBSession.add(log) |
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transaction.commit() |
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def get_most_recent_job_date(self, source): |
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try: |
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return \ |
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model.DBSession.query(model.JobAlchemy.publication_datetime)\ |
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.filter(model.JobAlchemy.source == source)\ |
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.order_by(model.JobAlchemy.publication_datetime.desc())\ |
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.limit(1)\ |
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.one()[0] # First element is publication_datetime value |
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except NoResultFound: |
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return datetime.datetime(1970, 1, 1, 0, 0, 0) |
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pyjobs /
web
