215 lines
7.4 KiB
Python
215 lines
7.4 KiB
Python
# Copyright (c) 2013, Web Notes Technologies Pvt. Ltd. and Contributors
|
|
# MIT License. See license.txt
|
|
|
|
"""This module handles the On Demand Backup utility"""
|
|
|
|
from __future__ import unicode_literals
|
|
|
|
#Imports
|
|
from frappe import _
|
|
import os, frappe
|
|
from datetime import datetime
|
|
from frappe.utils import cstr, get_url
|
|
|
|
#Global constants
|
|
verbose = 0
|
|
from frappe import conf
|
|
#-------------------------------------------------------------------------------
|
|
class BackupGenerator:
|
|
"""
|
|
This class contains methods to perform On Demand Backup
|
|
|
|
To initialize, specify (db_name, user, password, db_file_name=None, db_host="localhost")
|
|
If specifying db_file_name, also append ".sql.gz"
|
|
"""
|
|
def __init__(self, db_name, user, password, backup_path_db=None, backup_path_files=None, db_host="localhost"):
|
|
self.db_host = db_host
|
|
self.db_name = db_name
|
|
self.user = user
|
|
self.password = password
|
|
self.backup_path_files = backup_path_files
|
|
self.backup_path_db = backup_path_db
|
|
|
|
def get_backup(self, older_than=24, ignore_files=False):
|
|
"""
|
|
Takes a new dump if existing file is old
|
|
and sends the link to the file as email
|
|
"""
|
|
#Check if file exists and is less than a day old
|
|
#If not Take Dump
|
|
last_db, last_file = self.get_recent_backup(older_than)
|
|
if not (self.backup_path_files and self.backup_path_db):
|
|
self.set_backup_file_name()
|
|
if not (last_db and last_file):
|
|
self.take_dump()
|
|
if not ignore_files:
|
|
self.zip_files()
|
|
else:
|
|
self.backup_path_files = last_file
|
|
self.backup_path_db = last_db
|
|
|
|
|
|
def set_backup_file_name(self):
|
|
import random
|
|
todays_date = "".join(str(datetime.date(datetime.today())).split("-"))
|
|
random_number = str(int(random.random()*99999999))
|
|
|
|
#Generate a random name using today's date and a 8 digit random number
|
|
for_db = todays_date + "_" + random_number + "_database.sql.gz"
|
|
for_files = todays_date + "_" + random_number + "_files.tar"
|
|
backup_path = get_backup_path()
|
|
if not self.backup_path_db:
|
|
self.backup_path_db = os.path.join(backup_path, for_db)
|
|
if not self.backup_path_files:
|
|
self.backup_path_files = os.path.join(backup_path, for_files)
|
|
|
|
def get_recent_backup(self, older_than):
|
|
file_list = os.listdir(get_backup_path())
|
|
backup_path_files = None
|
|
backup_path_db = None
|
|
for this_file in file_list:
|
|
this_file = cstr(this_file)
|
|
this_file_path = os.path.join(get_backup_path(), this_file)
|
|
if not is_file_old(this_file_path, older_than):
|
|
if "_files" in this_file_path:
|
|
backup_path_files = this_file_path
|
|
if "_database" in this_file_path:
|
|
backup_path_db = this_file_path
|
|
return (backup_path_db, backup_path_files)
|
|
|
|
def zip_files(self):
|
|
files_path = frappe.get_site_path("public", "files")
|
|
cmd_string = """tar -cf %s %s""" % (self.backup_path_files, files_path)
|
|
err, out = frappe.utils.execute_in_shell(cmd_string)
|
|
|
|
def take_dump(self):
|
|
import frappe.utils
|
|
|
|
# escape reserved characters
|
|
args = dict([item[0], frappe.utils.esc(item[1], '$ ')]
|
|
for item in self.__dict__.copy().items())
|
|
cmd_string = """mysqldump -u %(user)s -p%(password)s %(db_name)s -h %(db_host)s | gzip -c > %(backup_path_db)s""" % args
|
|
err, out = frappe.utils.execute_in_shell(cmd_string)
|
|
|
|
def send_email(self):
|
|
"""
|
|
Sends the link to backup file located at erpnext/backups
|
|
"""
|
|
from frappe.utils.email_lib import sendmail, get_system_managers
|
|
|
|
recipient_list = get_system_managers()
|
|
db_backup_url = get_url(os.path.join('backups', os.path.basename(self.backup_path_db)))
|
|
files_backup_url = get_url(os.path.join('backups', os.path.basename(self.backup_path_files)))
|
|
|
|
msg = """<p>Hello,</p>
|
|
<p>Your backups are ready to be downloaded.</p>
|
|
<p>1. <a href="%(db_backup_url)s">Click here to download\
|
|
the database backup</a></p>
|
|
<p>2. <a href="%(files_backup_url)s">Click here to download\
|
|
the files backup</a></p>
|
|
<p>This link will be valid for 24 hours. A new backup will be available
|
|
for download only after 24 hours.</p>""" % {
|
|
"db_backup_url": db_backup_url,
|
|
"files_backup_url": files_backup_url
|
|
}
|
|
|
|
datetime_str = datetime.fromtimestamp(os.stat(self.backup_path_db).st_ctime)
|
|
subject = datetime_str.strftime("%d/%m/%Y %H:%M:%S") + """ - Backup ready to be downloaded"""
|
|
|
|
sendmail(recipients=recipient_list, msg=msg, subject=subject)
|
|
return recipient_list
|
|
|
|
|
|
@frappe.whitelist()
|
|
def get_backup():
|
|
"""
|
|
This function is executed when the user clicks on
|
|
Toos > Download Backup
|
|
"""
|
|
#if verbose: print frappe.db.cur_db_name + " " + conf.db_password
|
|
delete_temp_backups()
|
|
odb = BackupGenerator(frappe.db.cur_db_name, frappe.db.cur_db_name,\
|
|
frappe.conf.db_password, db_host = frappe.db.host)
|
|
odb.get_backup()
|
|
recipient_list = odb.send_email()
|
|
frappe.msgprint(_("Download link for your backup will be emailed on the following email address:").format(', '.join(recipient_list)))
|
|
|
|
def scheduled_backup(older_than=6, ignore_files=False, backup_path_db=None, backup_path_files=None):
|
|
"""this function is called from scheduler
|
|
deletes backups older than 7 days
|
|
takes backup"""
|
|
odb = new_backup(older_than, ignore_files, backup_path_db=backup_path_db, backup_path_files=backup_path_files)
|
|
return odb
|
|
|
|
def new_backup(older_than=6, ignore_files=False, backup_path_db=None, backup_path_files=None):
|
|
delete_temp_backups(older_than=168)
|
|
odb = BackupGenerator(frappe.conf.db_name, frappe.conf.db_name,\
|
|
frappe.conf.db_password,
|
|
backup_path_db=backup_path_db, backup_path_files=backup_path_files, db_host = frappe.db.host)
|
|
odb.get_backup(older_than, ignore_files)
|
|
return odb
|
|
|
|
def delete_temp_backups(older_than=24):
|
|
"""
|
|
Cleans up the backup_link_path directory by deleting files older than 24 hours
|
|
"""
|
|
file_list = os.listdir(get_backup_path())
|
|
for this_file in file_list:
|
|
this_file_path = os.path.join(get_backup_path(), this_file)
|
|
if is_file_old(this_file_path, older_than):
|
|
os.remove(this_file_path)
|
|
|
|
def is_file_old(db_file_name, older_than=24):
|
|
"""
|
|
Checks if file exists and is older than specified hours
|
|
Returns ->
|
|
True: file does not exist or file is old
|
|
False: file is new
|
|
"""
|
|
if os.path.isfile(db_file_name):
|
|
from datetime import timedelta
|
|
#Get timestamp of the file
|
|
file_datetime = datetime.fromtimestamp\
|
|
(os.stat(db_file_name).st_ctime)
|
|
if datetime.today() - file_datetime >= timedelta(hours = older_than):
|
|
if verbose: print "File is old"
|
|
return True
|
|
else:
|
|
if verbose: print "File is recent"
|
|
return False
|
|
else:
|
|
if verbose: print "File does not exist"
|
|
return True
|
|
|
|
def get_backup_path():
|
|
backup_path = frappe.utils.get_site_path(conf.get("backup_path", "private/backups"))
|
|
return backup_path
|
|
|
|
#-------------------------------------------------------------------------------
|
|
|
|
if __name__ == "__main__":
|
|
"""
|
|
is_file_old db_name user password db_host
|
|
get_backup db_name user password db_host
|
|
"""
|
|
import sys
|
|
cmd = sys.argv[1]
|
|
if cmd == "is_file_old":
|
|
odb = BackupGenerator(sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5] or "localhost")
|
|
is_file_old(odb.db_file_name)
|
|
|
|
if cmd == "get_backup":
|
|
odb = BackupGenerator(sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5] or "localhost")
|
|
odb.get_backup()
|
|
|
|
if cmd == "take_dump":
|
|
odb = BackupGenerator(sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5] or "localhost")
|
|
odb.take_dump()
|
|
|
|
if cmd == "send_email":
|
|
odb = BackupGenerator(sys.argv[2], sys.argv[3], sys.argv[4], sys.argv[5] or "localhost")
|
|
odb.send_email("abc.sql.gz")
|
|
|
|
if cmd == "delete_temp_backups":
|
|
delete_temp_backups()
|
|
|