726 lines
19 KiB
Python
726 lines
19 KiB
Python
# Copyright (c) 2015, Frappe Technologies Pvt. Ltd. and Contributors
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# MIT License. See license.txt
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# imports - standard imports
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import gzip
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import os
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from calendar import timegm
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from datetime import datetime
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from glob import glob
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from shutil import which
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# imports - third party imports
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import click
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# imports - module imports
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import frappe
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from frappe import _, conf
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from frappe.utils import get_file_size, get_url, now, now_datetime
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# backup variable for backwards compatibility
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verbose = False
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compress = False
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_verbose = verbose
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base_tables = ["__Auth", "__global_search", "__UserSettings"]
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class BackupGenerator:
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"""
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This class contains methods to perform On Demand Backup
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To initialize, specify (db_name, user, password, db_file_name=None, db_host="localhost")
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If specifying db_file_name, also append ".sql.gz"
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"""
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def __init__(
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self,
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db_name,
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user,
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password,
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backup_path=None,
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backup_path_db=None,
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backup_path_files=None,
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backup_path_private_files=None,
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db_host="localhost",
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db_port=None,
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db_type="mariadb",
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backup_path_conf=None,
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ignore_conf=False,
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compress_files=False,
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include_doctypes="",
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exclude_doctypes="",
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verbose=False,
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):
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global _verbose
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self.compress_files = compress_files or compress
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self.db_host = db_host
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self.db_port = db_port
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self.db_name = db_name
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self.db_type = db_type
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self.user = user
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self.password = password
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self.backup_path = backup_path
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self.backup_path_conf = backup_path_conf
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self.backup_path_db = backup_path_db
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self.backup_path_files = backup_path_files
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self.backup_path_private_files = backup_path_private_files
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self.ignore_conf = ignore_conf
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self.include_doctypes = include_doctypes
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self.exclude_doctypes = exclude_doctypes
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self.partial = False
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if not self.db_type:
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self.db_type = "mariadb"
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if not self.db_port:
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if self.db_type == "mariadb":
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self.db_port = 3306
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if self.db_type == "postgres":
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self.db_port = 5432
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site = frappe.local.site or frappe.generate_hash(length=8)
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self.site_slug = site.replace(".", "_")
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self.verbose = verbose
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self.setup_backup_directory()
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self.setup_backup_tables()
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_verbose = verbose
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def setup_backup_directory(self):
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specified = (
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self.backup_path
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or self.backup_path_db
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or self.backup_path_files
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or self.backup_path_private_files
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or self.backup_path_conf
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)
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if not specified:
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backups_folder = get_backup_path()
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if not os.path.exists(backups_folder):
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os.makedirs(backups_folder, exist_ok=True)
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else:
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if self.backup_path:
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os.makedirs(self.backup_path, exist_ok=True)
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for file_path in set(
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[
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self.backup_path_files,
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self.backup_path_db,
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self.backup_path_private_files,
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self.backup_path_conf,
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]
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):
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if file_path:
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dir = os.path.dirname(file_path)
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os.makedirs(dir, exist_ok=True)
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def setup_backup_tables(self):
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"""Sets self.backup_includes, self.backup_excludes based on passed args"""
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existing_doctypes = set([x.name for x in frappe.get_all("DocType")])
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def get_tables(doctypes):
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tables = []
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for doctype in doctypes:
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if doctype and doctype in existing_doctypes:
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if doctype.startswith("tab"):
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tables.append(doctype)
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else:
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tables.append("tab" + doctype)
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return tables
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passed_tables = {
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"include": get_tables(self.include_doctypes.strip().split(",")),
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"exclude": get_tables(self.exclude_doctypes.strip().split(",")),
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}
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specified_tables = get_tables(frappe.conf.get("backup", {}).get("includes", []))
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include_tables = (specified_tables + base_tables) if specified_tables else []
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conf_tables = {
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"include": include_tables,
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"exclude": get_tables(frappe.conf.get("backup", {}).get("excludes", [])),
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}
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self.backup_includes = passed_tables["include"]
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self.backup_excludes = passed_tables["exclude"]
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if not (self.backup_includes or self.backup_excludes) and not self.ignore_conf:
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self.backup_includes = self.backup_includes or conf_tables["include"]
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self.backup_excludes = self.backup_excludes or conf_tables["exclude"]
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self.partial = (self.backup_includes or self.backup_excludes) and not self.ignore_conf
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@property
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def site_config_backup_path(self):
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# For backwards compatibility
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click.secho(
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"BackupGenerator.site_config_backup_path has been deprecated in favour of"
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" BackupGenerator.backup_path_conf",
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fg="yellow",
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)
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return getattr(self, "backup_path_conf", None)
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def get_backup(self, older_than=24, ignore_files=False, force=False):
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"""
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Takes a new dump if existing file is old
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and sends the link to the file as email
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"""
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# Check if file exists and is less than a day old
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# If not Take Dump
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if not force:
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(
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last_db,
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last_file,
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last_private_file,
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site_config_backup_path,
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) = self.get_recent_backup(older_than)
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else:
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last_db, last_file, last_private_file, site_config_backup_path = (
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False,
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False,
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False,
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False,
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)
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self.todays_date = now_datetime().strftime("%Y%m%d_%H%M%S")
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if not (
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self.backup_path_conf
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and self.backup_path_db
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and self.backup_path_files
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and self.backup_path_private_files
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):
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self.set_backup_file_name()
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if not (last_db and last_file and last_private_file and site_config_backup_path):
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self.take_dump()
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self.copy_site_config()
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if not ignore_files:
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self.backup_files()
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else:
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self.backup_path_files = last_file
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self.backup_path_db = last_db
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self.backup_path_private_files = last_private_file
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self.backup_path_conf = site_config_backup_path
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def set_backup_file_name(self):
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partial = "-partial" if self.partial else ""
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ext = "tgz" if self.compress_files else "tar"
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for_conf = f"{self.todays_date}-{self.site_slug}-site_config_backup.json"
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for_db = f"{self.todays_date}-{self.site_slug}{partial}-database.sql.gz"
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for_public_files = f"{self.todays_date}-{self.site_slug}-files.{ext}"
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for_private_files = f"{self.todays_date}-{self.site_slug}-private-files.{ext}"
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backup_path = self.backup_path or get_backup_path()
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if not self.backup_path_conf:
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self.backup_path_conf = os.path.join(backup_path, for_conf)
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if not self.backup_path_db:
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self.backup_path_db = os.path.join(backup_path, for_db)
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if not self.backup_path_files:
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self.backup_path_files = os.path.join(backup_path, for_public_files)
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if not self.backup_path_private_files:
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self.backup_path_private_files = os.path.join(backup_path, for_private_files)
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def get_recent_backup(self, older_than, partial=False):
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backup_path = get_backup_path()
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file_type_slugs = {
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"database": "*-{{}}-{}database.sql.gz".format('*' if partial else ''),
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"public": "*-{}-files.tar",
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"private": "*-{}-private-files.tar",
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"config": "*-{}-site_config_backup.json",
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}
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def backup_time(file_path):
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file_name = file_path.split(os.sep)[-1]
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file_timestamp = file_name.split("-")[0]
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return timegm(datetime.strptime(file_timestamp, "%Y%m%d_%H%M%S").utctimetuple())
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def get_latest(file_pattern):
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file_pattern = os.path.join(backup_path, file_pattern.format(self.site_slug))
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file_list = glob(file_pattern)
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if file_list:
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return max(file_list, key=backup_time)
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def old_enough(file_path):
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if file_path:
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if not os.path.isfile(file_path) or is_file_old(file_path, older_than):
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return None
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return file_path
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latest_backups = {
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file_type: get_latest(pattern) for file_type, pattern in file_type_slugs.items()
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}
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recent_backups = {
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file_type: old_enough(file_name) for file_type, file_name in latest_backups.items()
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}
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return (
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recent_backups.get("database"),
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recent_backups.get("public"),
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recent_backups.get("private"),
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recent_backups.get("config"),
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)
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def zip_files(self):
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# For backwards compatibility - pre v13
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click.secho(
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"BackupGenerator.zip_files has been deprecated in favour of"
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" BackupGenerator.backup_files",
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fg="yellow",
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)
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return self.backup_files()
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def get_summary(self):
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summary = {
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"config": {
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"path": self.backup_path_conf,
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"size": get_file_size(self.backup_path_conf, format=True),
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},
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"database": {
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"path": self.backup_path_db,
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"size": get_file_size(self.backup_path_db, format=True),
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},
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}
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if os.path.exists(self.backup_path_files) and os.path.exists(
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self.backup_path_private_files
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):
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summary.update(
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{
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"public": {
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"path": self.backup_path_files,
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"size": get_file_size(self.backup_path_files, format=True),
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},
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"private": {
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"path": self.backup_path_private_files,
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"size": get_file_size(self.backup_path_private_files, format=True),
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},
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}
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)
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return summary
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def print_summary(self):
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backup_summary = self.get_summary()
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print("Backup Summary for {0} at {1}".format(frappe.local.site, now()))
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title = max([len(x) for x in backup_summary])
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path = max([len(x["path"]) for x in backup_summary.values()])
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for _type, info in backup_summary.items():
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template = "{{0:{0}}}: {{1:{1}}} {{2}}".format(title, path)
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print(template.format(_type.title(), info["path"], info["size"]))
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def backup_files(self):
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import subprocess
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for folder in ("public", "private"):
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files_path = frappe.get_site_path(folder, "files")
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backup_path = (
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self.backup_path_files if folder == "public" else self.backup_path_private_files
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)
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if self.compress_files:
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cmd_string = "tar cf - {1} | gzip > {0}"
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else:
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cmd_string = "tar -cf {0} {1}"
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output = subprocess.check_output(
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cmd_string.format(backup_path, files_path), shell=True
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)
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if self.verbose and output:
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print(output.decode("utf8"))
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def copy_site_config(self):
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site_config_backup_path = self.backup_path_conf
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site_config_path = os.path.join(frappe.get_site_path(), "site_config.json")
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with open(site_config_backup_path, "w") as n, open(site_config_path) as c:
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n.write(c.read())
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def take_dump(self):
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import frappe.utils
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from frappe.utils.change_log import get_app_branch
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db_exc = {
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"mariadb": ("mysqldump", which("mysqldump")),
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"postgres": ("pg_dump", which("pg_dump")),
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}[self.db_type]
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gzip_exc = which("gzip")
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if not (gzip_exc and db_exc[1]):
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_exc = "gzip" if not gzip_exc else db_exc[0]
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frappe.throw(
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f"{_exc} not found in PATH! This is required to take a backup.",
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exc=frappe.ExecutableNotFound
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)
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db_exc = db_exc[0]
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database_header_content = [
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f"Backup generated by Frappe {frappe.__version__} on branch {get_app_branch('frappe') or 'N/A'}",
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"",
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]
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# escape reserved characters
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args = frappe._dict(
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[item[0], frappe.utils.esc(str(item[1]), "$ ")]
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for item in self.__dict__.copy().items()
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)
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if self.backup_includes:
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backup_info = ("Backing Up Tables: ", ", ".join(self.backup_includes))
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elif self.backup_excludes:
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backup_info = ("Skipping Tables: ", ", ".join(self.backup_excludes))
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if self.partial:
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print(''.join(backup_info), "\n")
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database_header_content.extend([
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f"Partial Backup of Frappe Site {frappe.local.site}",
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("Backup contains: " if self.backup_includes else "Backup excludes: ") + backup_info[1],
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"",
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])
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generated_header = "\n".join([f"-- {x}" for x in database_header_content]) + "\n"
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with gzip.open(args.backup_path_db, "wt") as f:
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f.write(generated_header)
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if self.db_type == "postgres":
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if self.backup_includes:
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args["include"] = " ".join(
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["--table='public.\"{0}\"'".format(table) for table in self.backup_includes]
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)
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elif self.backup_excludes:
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args["exclude"] = " ".join(
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["--exclude-table-data='public.\"{0}\"'".format(table) for table in self.backup_excludes]
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)
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cmd_string = (
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"{db_exc} postgres://{user}:{password}@{db_host}:{db_port}/{db_name}"
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" {include} {exclude} | {gzip} >> {backup_path_db}"
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)
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else:
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if self.backup_includes:
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args["include"] = " ".join(["'{0}'".format(x) for x in self.backup_includes])
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elif self.backup_excludes:
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args["exclude"] = " ".join(
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[
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"--ignore-table='{0}.{1}'".format(frappe.conf.db_name, table)
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for table in self.backup_excludes
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]
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)
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cmd_string = (
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"{db_exc} --single-transaction --quick --lock-tables=false -u {user}"
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" -p{password} {db_name} -h {db_host} -P {db_port} {include} {exclude}"
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" | {gzip} >> {backup_path_db}"
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)
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command = cmd_string.format(
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user=args.user,
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password=args.password,
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db_exc=db_exc,
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db_host=args.db_host,
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db_port=args.db_port,
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db_name=args.db_name,
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backup_path_db=args.backup_path_db,
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exclude=args.get("exclude", ""),
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include=args.get("include", ""),
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gzip=gzip_exc,
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)
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if self.verbose:
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print(command + "\n")
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err, out = frappe.utils.execute_in_shell(command)
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def send_email(self):
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"""
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Sends the link to backup file located at erpnext/backups
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"""
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from frappe.email import get_system_managers
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recipient_list = get_system_managers()
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db_backup_url = get_url(
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os.path.join("backups", os.path.basename(self.backup_path_db))
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)
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files_backup_url = get_url(
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os.path.join("backups", os.path.basename(self.backup_path_files))
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)
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msg = """Hello,
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Your backups are ready to be downloaded.
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1. [Click here to download the database backup](%(db_backup_url)s)
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2. [Click here to download the files backup](%(files_backup_url)s)
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This link will be valid for 24 hours. A new backup will be available for
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download only after 24 hours.""" % {
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"db_backup_url": db_backup_url,
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"files_backup_url": files_backup_url,
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}
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datetime_str = datetime.fromtimestamp(os.stat(self.backup_path_db).st_ctime)
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subject = (
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datetime_str.strftime("%d/%m/%Y %H:%M:%S") + """ - Backup ready to be downloaded"""
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)
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frappe.sendmail(recipients=recipient_list, msg=msg, subject=subject)
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return recipient_list
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@frappe.whitelist()
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def get_backup():
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"""
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This function is executed when the user clicks on
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Toos > Download Backup
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"""
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delete_temp_backups()
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odb = BackupGenerator(
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frappe.conf.db_name,
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frappe.conf.db_name,
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frappe.conf.db_password,
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db_host=frappe.db.host,
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db_type=frappe.conf.db_type,
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db_port=frappe.conf.db_port,
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)
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odb.get_backup()
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recipient_list = odb.send_email()
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frappe.msgprint(
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_(
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"Download link for your backup will be emailed on the following email address: {0}"
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).format(", ".join(recipient_list))
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)
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@frappe.whitelist()
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def fetch_latest_backups(partial=False):
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"""Fetches paths of the latest backup taken in the last 30 days
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Only for: System Managers
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Returns:
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dict: relative Backup Paths
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"""
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frappe.only_for("System Manager")
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odb = BackupGenerator(
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frappe.conf.db_name,
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frappe.conf.db_name,
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frappe.conf.db_password,
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db_host=frappe.db.host,
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db_type=frappe.conf.db_type,
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db_port=frappe.conf.db_port,
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)
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database, public, private, config = odb.get_recent_backup(older_than=24 * 30, partial=partial)
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return {"database": database, "public": public, "private": private, "config": config}
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def scheduled_backup(
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older_than=6,
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ignore_files=False,
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backup_path=None,
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backup_path_db=None,
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backup_path_files=None,
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backup_path_private_files=None,
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backup_path_conf=None,
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ignore_conf=False,
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include_doctypes="",
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exclude_doctypes="",
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compress=False,
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force=False,
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verbose=False,
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):
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"""this function is called from scheduler
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deletes backups older than 7 days
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takes backup"""
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odb = new_backup(
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older_than=older_than,
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ignore_files=ignore_files,
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backup_path=backup_path,
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backup_path_db=backup_path_db,
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backup_path_files=backup_path_files,
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backup_path_private_files=backup_path_private_files,
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backup_path_conf=backup_path_conf,
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ignore_conf=ignore_conf,
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include_doctypes=include_doctypes,
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exclude_doctypes=exclude_doctypes,
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compress=compress,
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force=force,
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verbose=verbose,
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)
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return odb
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def new_backup(
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older_than=6,
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ignore_files=False,
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backup_path=None,
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backup_path_db=None,
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backup_path_files=None,
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backup_path_private_files=None,
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backup_path_conf=None,
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ignore_conf=False,
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include_doctypes="",
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exclude_doctypes="",
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compress=False,
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force=False,
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verbose=False,
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):
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delete_temp_backups(older_than=frappe.conf.keep_backups_for_hours or 24)
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odb = BackupGenerator(
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frappe.conf.db_name,
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frappe.conf.db_name,
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frappe.conf.db_password,
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db_host=frappe.db.host,
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db_port=frappe.db.port,
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db_type=frappe.conf.db_type,
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backup_path=backup_path,
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backup_path_db=backup_path_db,
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backup_path_files=backup_path_files,
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backup_path_private_files=backup_path_private_files,
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backup_path_conf=backup_path_conf,
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ignore_conf=ignore_conf,
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include_doctypes=include_doctypes,
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exclude_doctypes=exclude_doctypes,
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verbose=verbose,
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compress_files=compress,
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)
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odb.get_backup(older_than, ignore_files, force=force)
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return odb
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def delete_temp_backups(older_than=24):
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"""
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Cleans up the backup_link_path directory by deleting files older than 24 hours
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"""
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backup_path = get_backup_path()
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if os.path.exists(backup_path):
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file_list = os.listdir(get_backup_path())
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for this_file in file_list:
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this_file_path = os.path.join(get_backup_path(), this_file)
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if is_file_old(this_file_path, older_than):
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os.remove(this_file_path)
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def is_file_old(file_path, older_than=24):
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"""
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Checks if file exists and is older than specified hours
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Returns ->
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True: file does not exist or file is old
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False: file is new
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"""
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if os.path.isfile(file_path):
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from datetime import timedelta
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# Get timestamp of the file
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file_datetime = datetime.fromtimestamp(os.stat(file_path).st_ctime)
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if datetime.today() - file_datetime >= timedelta(hours=older_than):
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if _verbose:
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print(f"File {file_path} is older than {older_than} hours")
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return True
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else:
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if _verbose:
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print(f"File {file_path} is recent")
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return False
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else:
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if _verbose:
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print(f"File {file_path} does not exist")
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return True
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def get_backup_path():
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backup_path = frappe.utils.get_site_path(conf.get("backup_path", "private/backups"))
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return backup_path
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def backup(
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with_files=False,
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backup_path_db=None,
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backup_path_files=None,
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backup_path_private_files=None,
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backup_path_conf=None,
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quiet=False,
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):
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"Backup"
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odb = scheduled_backup(
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ignore_files=not with_files,
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backup_path_db=backup_path_db,
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backup_path_files=backup_path_files,
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backup_path_private_files=backup_path_private_files,
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backup_path_conf=backup_path_conf,
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force=True,
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)
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return {
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"backup_path_db": odb.backup_path_db,
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"backup_path_files": odb.backup_path_files,
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"backup_path_private_files": odb.backup_path_private_files,
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}
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if __name__ == "__main__":
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import sys
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cmd = sys.argv[1]
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db_type = "mariadb"
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try:
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db_type = sys.argv[6]
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except IndexError:
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pass
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db_port = 3306
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try:
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db_port = int(sys.argv[7])
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except IndexError:
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pass
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if cmd == "is_file_old":
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odb = BackupGenerator(
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sys.argv[2],
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sys.argv[3],
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sys.argv[4],
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sys.argv[5] or "localhost",
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db_type=db_type,
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db_port=db_port,
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)
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is_file_old(odb.db_file_name)
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if cmd == "get_backup":
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odb = BackupGenerator(
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sys.argv[2],
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sys.argv[3],
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sys.argv[4],
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sys.argv[5] or "localhost",
|
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db_type=db_type,
|
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db_port=db_port,
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)
|
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odb.get_backup()
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if cmd == "take_dump":
|
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odb = BackupGenerator(
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sys.argv[2],
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sys.argv[3],
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sys.argv[4],
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sys.argv[5] or "localhost",
|
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db_type=db_type,
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db_port=db_port,
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)
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odb.take_dump()
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|
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if cmd == "send_email":
|
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odb = BackupGenerator(
|
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sys.argv[2],
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sys.argv[3],
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sys.argv[4],
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sys.argv[5] or "localhost",
|
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db_type=db_type,
|
|
db_port=db_port,
|
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)
|
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odb.send_email("abc.sql.gz")
|
|
|
|
if cmd == "delete_temp_backups":
|
|
delete_temp_backups()
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