Upgrades and tweaks
- Added "include" feature from rsync - Made some constants - When making a diff, the most recently created directory will be used as the link, to save time and space (both full and diff directories are considered now) -
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mikes-backup
199
mikes-backup
@ -4,6 +4,7 @@
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#
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import datetime
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import os
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import re
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import shlex
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import subprocess
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import sys
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@ -19,7 +20,8 @@ class MikesBackup:
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__remote_user = None
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__destination_dir_base = None
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__source_dirs = []
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__source_dir = None
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__source_dir_includes = []
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__source_dir_excludes = []
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__source_mountpoint_demands = []
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@ -29,6 +31,9 @@ class MikesBackup:
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__force_full = False
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__force_differential = False
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CONST_FULL_DIRECTORY_NAME = "Full"
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CONST_DIFFERENTIAL_DIRECTORY_NAME = "Differential"
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#
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def __init__(self):
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@ -44,7 +49,8 @@ class MikesBackup:
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s += "\nRemote Host: " + str(self.__remote_host)
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s += "\nRemote User: " + str(self.__remote_user)
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s += "\nDestination Dir Base: " + str(self.__destination_dir_base)
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s += "\nSource Dirs: " + str(self.__source_dirs)
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s += "\nSource Dir (Main): " + str(self.__source_dir)
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s += "\nSource Dirs (Includes): " + str(self.__source_dir_includes)
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s += "\nSource Dir Excludes: " + str(self.__source_dir_excludes)
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s += "\nSource Mountpoint Demands: " + str(self.__source_mountpoint_demands)
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s += "\nSSH Key: " + str(self.__ssh_key)
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@ -105,13 +111,13 @@ class MikesBackup:
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a = a + 1
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elif arg == "--source-dir":
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valid_arg = True
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self.__source_dirs.append(sys.argv[a + 1])
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self.__source_dir = sys.argv[a + 1]
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self.log("Found source dir: " + sys.argv[a + 1])
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a = a + 1
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elif arg == "--exclude":
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elif arg == "--include":
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valid_arg = True
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self.__source_dir_excludes.append(sys.argv[a + 1])
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self.log("Found exclude dir: " + sys.argv[a + 1])
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self.__source_dir_includes.append(sys.argv[a + 1])
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self.log("Found additional source dir include: " + sys.argv[a + 1])
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a = a + 1
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elif arg == "--source-mountpoint":
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valid_arg = True
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@ -123,6 +129,11 @@ class MikesBackup:
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self.__destination_dir_base = sys.argv[a + 1]
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self.log("Found destination dir: " + self.__destination_dir_base)
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a = a + 1
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elif arg == "--exclude":
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valid_arg = True
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self.__source_dir_excludes.append(sys.argv[a + 1])
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self.log("Found exclude dir: " + sys.argv[a + 1])
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a = a + 1
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elif arg == "--remote-host":
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valid_arg = True
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self.__remote_host = sys.argv[a + 1]
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@ -186,6 +197,13 @@ class MikesBackup:
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if self.__remote_user is None:
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raise Exception("Please provide remote user")
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#
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def demand_source_directory_config(self):
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#
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if self.__source_dir is None:
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raise Exception("Please provide a source directory")
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#
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def demand_destination_directory_config(self):
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@ -248,15 +266,6 @@ class MikesBackup:
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self.log("Trying to determine if Full backup destination directory exists:", dir_path)
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return self.does_destination_directory_exist(dir_path)
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#
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def get_source_directories(self):
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#
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if len(self.__source_dirs) == 0:
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raise Exception("No source directories specified")
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return self.__source_dirs
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#
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def do_backup(self):
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@ -270,8 +279,6 @@ class MikesBackup:
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# Remote base dir must exist
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self.demand_destination_base_backup_directory()
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raise Exception("Just testing")
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# Forced full or differential by args?
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if self.__force_full is True or self.__force_differential is True:
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if self.__force_full is True:
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@ -290,7 +297,7 @@ class MikesBackup:
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self.log("Automatically choosing full backup, because full backup destination directory wasn't found")
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self.do_full_backup()
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#
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# TODO: Full backups should clean out the differentials directory
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def do_full_backup(self):
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# Start args
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@ -299,8 +306,8 @@ class MikesBackup:
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# Get destination directory
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destination_dir = self.make_full_backup_destination_path()
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# Append source directories
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args.extend(self.get_source_directories())
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# Append source directory
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args.append(self.make_rsync_source_directory_part())
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# Append remote destination directory
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# args.append( self.__remote_user + "@" + self.__remote_host + ":" + remote_dir)
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@ -318,24 +325,24 @@ class MikesBackup:
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args = []
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# Get directories
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link_dest_dir = self.make_full_backup_destination_path()
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link_dest_dir = self.determine_rsync_backup_link_destination_path()
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destination_dir = self.make_remote_differential_backup_path()
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self.ensure_destination_directory(destination_dir)
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# Add link dest arg
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# Add link dest arg?
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if link_dest_dir:
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args.append("--link-dest")
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args.append(link_dest_dir)
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# Append source directories
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args.extend(self.get_source_directories())
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# Append source directory
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args.append(self.make_rsync_source_directory_part())
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# Append remote destination directory
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# args.append( self.__remote_user + "@" + self.__remote_host + ":" + remote_dir)
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args.append(self.make_rsync_remote_destination_part(destination_dir))
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# print("Args", str(args))
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self.log("Link destination dir:" + link_dest_dir)
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self.log("Destination dir:" + destination_dir)
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self.log("Link destination dir: " + link_dest_dir)
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self.log("Destination dir: " + destination_dir)
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self.execute_rsync(args)
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@ -369,17 +376,43 @@ class MikesBackup:
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raise Exception("No remote directory was specified")
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#
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return os.path.join(self.__destination_dir_base, "Full")
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return os.path.join(self.__destination_dir_base, self.CONST_FULL_DIRECTORY_NAME)
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#
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def make_remote_differential_backup_path(self):
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def make_remote_differential_backup_path_base(self):
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#
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if self.__destination_dir_base is None:
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raise Exception("No remote directory was specified")
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return os.path.join(self.__destination_dir_base, self.CONST_DIFFERENTIAL_DIRECTORY_NAME)
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#
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return os.path.join(self.__destination_dir_base, "Differential", self.get_datetime_for_filename())
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def make_remote_differential_backup_path(self):
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diff_path_base = self.make_remote_differential_backup_path_base()
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#
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return os.path.join(diff_path_base, self.get_datetime_for_filename())
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#
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def make_rsync_source_includes_part(self):
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args = []
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for d in self.__source_dir_includes:
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args.append("--include")
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args.append(d)
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return args
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#
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def make_rsync_source_directory_part(self):
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self.demand_source_directory_config()
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#
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return self.__source_dir
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#
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def make_rsync_remote_destination_part(self, destination_dir):
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@ -398,6 +431,86 @@ class MikesBackup:
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return part
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#
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def determine_rsync_backup_link_destination_path(self):
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self.demand_destination_directory_config()
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self.log("Begin trying to determine which previous backup path to use as link")
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#
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newest_path = None
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newest_path_date = None
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# Pattern to parse the 'ls' command
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pattern = re.compile(
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""".*(?P<date>[0-9]{4}-[0-9]{2}-[0-9]{2} [0-9]{2}:[0-9]{2}:[0-9]{2}\.[0-9]{9} .{5}) (?P<name>.+)$""",
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re.MULTILINE
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)
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# Get listing info for the full path
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destination_path_full = self.make_full_backup_destination_path()
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return_code, stdout, stderr = self.execute_remote_ssh_command([
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"ls",
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"-l",
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"-c",
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"--all",
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"--full-time",
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destination_path_full
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])
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if return_code != 0:
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raise Exception("Failed to get listing info for base destination directory")
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for match in pattern.finditer(stdout):
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name = match.group("name")
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date = match.group("date")
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if name == ".":
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self.log("Start by assuming \"Full\" is the most recent backup: " + destination_path_full)
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self.log("; With a date of " + date)
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newest_path = destination_path_full
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newest_path_date = date
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break
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if not newest_path:
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self.log("Didn't find a \"Full\" backup on remote")
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# TODO: Need to use a temp name for diff directories, so interrupted diffs don't get used
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# TODO: Allow user to specify whether rsync success is only return 0, or also 23/24 (partial xfers)
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# Get listing info for all differential directories
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differential_path_base = self.make_remote_differential_backup_path_base()
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return_code, stdout, stderr = self.execute_remote_ssh_command([
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"ls",
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"-l",
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"-c",
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"--all",
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"--full-time",
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differential_path_base
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])
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if return_code != 0:
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raise Exception("Failed to get listing info for destination differential base directory")
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# Look for the most recent differential directory
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# (must be newer than the Full directory too)
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for match in pattern.finditer(stdout):
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name = match.group("name")
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date = match.group("date")
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if name == "." or name == "..":
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continue
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if newest_path is None or date > newest_path_date:
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self.log("Found a newer differential backup: " + name + "; " + date)
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newest_path = os.path.join(differential_path_base, name)
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newest_path_date = date
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else:
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self.log("Not newer: " + name + "; " + date)
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#
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self.log("Newest backup path is: " + newest_path)
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self.log("; With a date of: " + newest_path_date)
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return newest_path
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@staticmethod
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def ensure_local_directory(d):
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@ -444,6 +557,11 @@ class MikesBackup:
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"--delete-excluded"
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]
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#
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for i in self.__source_dir_includes:
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args.append("--include")
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args.append(i)
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#
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for e in self.__source_dir_excludes:
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args.append("--exclude")
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@ -504,12 +622,16 @@ class MikesBackup:
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raise Exception("Unsupported command datatype")
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# Spawn SSH in shell
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# process = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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process = subprocess.Popen(args)
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# stdout, stderr = process.communicate()
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process.communicate()
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stdout = ""
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stderr = ""
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process = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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# process = subprocess.Popen(args)
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stdout, stderr = process.communicate()
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stdout = stdout.decode()
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stderr = stderr.decode()
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# process.communicate()
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# stdout = ""
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# stderr = ""
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# print(stderr.decode())
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return process.returncode, stdout, stderr
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@ -518,6 +640,7 @@ class MikesBackup:
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def execute_rsync(self, _args):
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# Demand stuff
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self.demand_source_directory_config()
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self.demand_destination_directory_config()
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if self.is_using_ssh():
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self.demand_ssh_config()
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@ -530,6 +653,10 @@ class MikesBackup:
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#
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env = self.start_rsync_environment_variables()
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#
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self.log("Executing rsync with the following arguments:", args)
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self.log("; And the following environment:", env)
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#
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# print("Debug -> Want to execute Rsync")
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# print("Args:", str(args))
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