commonssql.py

#!/usr/bin/python
# -*- coding: utf8 -*-

# Copyright (C) 2012 WikiTeam
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# 
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
# 
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

import csv
import MySQLdb
import re

filename = 'commonssql.csv'
f = open(filename, 'w')
f.write('img_name|img_timestamp|img_user|img_user_text|img_size|img_width|img_height\n')
f.close()

#http://www.mediawiki.org/wiki/Manual:Image_table
#http://www.mediawiki.org/wiki/Manual:Oldimage_table
queries = [
    "SELECT /* commonssql.py SLOW_OK */ img_name, img_timestamp, img_user, img_user_text, img_size, img_width, img_height FROM image WHERE img_timestamp<20070101000000 ORDER BY img_timestamp ASC",
    "SELECT /* commonssql.py SLOW_OK */ oi_archive_name AS img_name, oi_timestamp AS img_timestamp, oi_user AS img_user, oi_user_text AS img_user_text, oi_size AS img_size, oi_width AS img_width, oi_height AS img_height FROM oldimage WHERE oi_deleted=0 AND oi_timestamp<20070101000000 ORDER BY oi_timestamp ASC" #do not get unavailable images
]

f = csv.writer(open(filename, 'a'), delimiter='|', quotechar='"', quoting=csv.QUOTE_MINIMAL)
conn = MySQLdb.connect(host='sql-s4', db='commonswiki_p', read_default_file='~/.my.cnf')
for query in queries:
    conn.query(query)
    r = conn.store_result()
    c = 0
    row = r.fetch_row(maxrows=1, how=1)
    rows = []
    while row:
        if len(row) == 1:
            img_name = re.sub(u' ', u'_', unicode(row[0]['img_name'], 'utf-8'))
            img_timestamp = row[0]['img_timestamp']
            img_user = row[0]['img_user']
            img_user_text = re.sub(u' ', u'_', unicode(row[0]['img_user_text'], 'utf-8'))
            img_size = row[0]['img_size']
            img_width = row[0]['img_width']
            img_height = row[0]['img_height']
            
            rows.append([img_name.encode('utf-8'), img_timestamp, img_user, img_user_text.encode('utf-8'), img_size, img_width, img_height])
            c += 1
            if c % 10000 == 0:
                print c
                f.writerows(rows)
                rows = []
        row = r.fetch_row(maxrows=1, how=1)
    f.writerows(rows)