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#!/usr/bin/env python |
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# -*- encoding: utf-8 -*- |
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# vim: set et sw=4 ts=4 sts=4 ff=unix fenc=utf8: |
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# Author: Binux<[email protected]> |
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# http://binux.me |
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# Created on 2014-11-22 20:30:44 |
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import os |
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import time |
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import sqlite3 |
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import threading |
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class SQLiteMixin(object): |
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@property |
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def dbcur(self): |
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pid = (os.getpid(), threading.current_thread().ident) |
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if not (self.conn and pid == self.last_pid): |
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self.last_pid = pid |
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self.conn = sqlite3.connect(self.path, isolation_level=None) |
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return self.conn.cursor() |
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View Code Duplication |
class SplitTableMixin(object): |
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UPDATE_PROJECTS_TIME = 10 * 60 |
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def _tablename(self, project): |
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if self.__tablename__: |
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return '%s_%s' % (self.__tablename__, project) |
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else: |
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return project |
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@property |
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def projects(self): |
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if time.time() - getattr(self, '_last_update_projects', 0) \ |
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> self.UPDATE_PROJECTS_TIME: |
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self._list_project() |
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return self._projects |
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@projects.setter |
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def projects(self, value): |
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self._projects = value |
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def _list_project(self): |
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self._last_update_projects = time.time() |
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self.projects = set() |
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if self.__tablename__: |
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prefix = '%s_' % self.__tablename__ |
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else: |
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prefix = '' |
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for project, in self._select('sqlite_master', what='name', |
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where='type = "table"'): |
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if project.startswith(prefix): |
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project = project[len(prefix):] |
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self.projects.add(project) |
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def drop(self, project): |
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if project not in self.projects: |
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self._list_project() |
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if project not in self.projects: |
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return |
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tablename = self._tablename(project) |
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self._execute("DROP TABLE %s" % self.escape(tablename)) |
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self._list_project() |
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binux /
pyspider
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