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Blog post VII
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# -*- coding: utf-8 -*- | |
import rethinkdb as r | |
class RethinkdbPipeline(object): | |
conn = None | |
rethinkdb_settings = {} | |
@classmethod | |
def from_crawler(cls, crawler): | |
settings = crawler.settings | |
rethinkdb_settings = settings.get('RETHINKDB', {}) | |
return cls(rethinkdb_settings) | |
def __init__(self, rethinkdb_settings): | |
self.rethinkdb_settings = rethinkdb_settings | |
def open_spider(self, spider): | |
if self.rethinkdb_settings: | |
self.table_name = self.rethinkdb_settings.pop('table_name') | |
self.db_name = self.rethinkdb_settings['db'] | |
self.conn = r.connect(**self.rethinkdb_settings) | |
table_list = r.db(self.db_name).table_list().run( | |
self.conn | |
) | |
if self.table_name not in table_list: | |
r.db(self.db_name).table_create(self.table_name).run(self.conn) | |
def close_spider(self, spider): | |
if self.conn: | |
self.conn.close() | |
def process_item(self, item, spider): | |
if self.conn: | |
r.table(self.table_name).insert(item).run(self.conn) | |
return item |
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