Python脚本实现自动将数据库备份到 Dropbox

#!/usr/bin/python
#coding:utf-8
 
import sys
import os
from yamlimport load
from datetime import datetime
import dropbox
from dropbox.filesimport WriteMode
from dropbox.exceptions import ApiError, AuthError
 
if len(sys.argv) < 2:
  print sys.stderr, "Usage: %s <config_file>" % sys.argv[0]
  sys.exit(0)
 
conf = load(file(sys.argv[1], 'r'))
 
# config file is a YAML looks like
# ---
# server-name: 127.0.0.1
# local-backup-path: /tmp
# remote-backup-path: /backup
# dropbox-token: jdkgjdkjg
# databases:
#  - host:  localhost
#   port:  3306
#   user:  user
#   pass:  password
#   name:  database1
#   charset: utf8
#  - host:  localhost
#   port:  3306
#   user:  user2
#   pass:  password2
#   name:  database2
#   charset: utf8
 
for dbin conf['databases'] :
  filename = "%s_%s.sql" % (db['name'], datetime.now().strftime("%Y%m%d-%H-%M-%S")) 
  filepath = "%s/%s" % (conf['local-backup-path'], filename)
  cmd = "mysqldump -h%s -u%s -p%s -P%s --single-transaction %s > %s" % (
      db['host'],
      db['user'], 
      db['pass'], 
      db['port'], 
      db['name'], 
      filepath
      )
  os.system(cmd)
  cmd = "gzip %s" % filepath
  os.system(cmd)
  filepath = filepath + '.gz'
  dbx = dropbox.Dropbox(conf['dropbox-token'])
  backuppath = "%s/%s/%s/%s" % (
      conf['remote-backup-path'],    # remote path
      datetime.now().strftime("%Y%m%d"), # date string
      conf['server-name'],       # server name
      filename + '.gz')
  with open(filepath, 'rb') as f:
    time = datetime.now().strftime("%Y-%m-%d %H:%M:%S ")
    print(time + "Uploading " + filepath + " to Dropbox as " + backuppath)
    try:
      dbx.files_upload(f.read(), backuppath, mode=WriteMode('overwrite'))
    except ApiErroras err:
      # This checks for the specific error where a user doesn't have
      # enough Dropbox space quota to upload this file
      if (err.error.is_path() and
          err.error.get_path().error.is_insufficient_space()):
        sys.exit("ERROR: Cannot back up; insufficient space.")
      elif err.user_message_text:
        print(err.user_message_text)
        sys.exit()
      else:
        print(err)
        sys.exit()

pip install PyYAML
pip install dropbox