tunasync/tunasync/mirror_provider.py
2014-11-15 16:53:51 +08:00

124 lines
3.5 KiB
Python

#!/usr/bin/env python2
# -*- coding:utf-8 -*-
import sh
import os
from datetime import datetime
class MirrorProvider(object):
'''
Mirror method class, can be `rsync', `debmirror', etc.
'''
def __init__(self, name, local_dir, log_dir, log_file="/dev/null",
interval=120, hooks=[]):
self.name = name
self.local_dir = local_dir
self.log_file = log_file
self.log_dir = log_dir
self.interval = interval
self.hooks = hooks
self.p = None
# deprecated
def ensure_log_dir(self):
log_dir = os.path.dirname(self.log_file)
if not os.path.exists(log_dir):
sh.mkdir("-p", log_dir)
def get_log_file(self, ctx={}):
if 'log_file' in ctx:
log_file = ctx['log_file']
else:
now = datetime.now().strftime("%Y-%m-%d_%H")
log_file = self.log_file.format(date=now)
ctx['log_file'] = log_file
return log_file
def run(self, ctx={}):
raise NotImplementedError("run method should be implemented")
def terminate(self):
if self.p is not None:
self.p.process.terminate()
print("{} terminated".format(self.name))
self.p = None
def wait(self):
if self.p is not None:
self.p.wait()
self.p = None
class RsyncProvider(MirrorProvider):
_default_options = \
"-aHvh --stats --delete-after --timeout=120 --contimeout=120"
def __init__(self, name, upstream_url, local_dir, log_dir,
useIPv6=True, password=None, exclude_file=None,
log_file="/dev/null", interval=120, hooks=[]):
super(RsyncProvider, self).__init__(name, local_dir, log_dir, log_file,
interval, hooks)
self.upstream_url = upstream_url
self.useIPv6 = useIPv6
self.exclude_file = exclude_file
self.password = password
@property
def options(self):
_options = self._default_options.split()
if self.useIPv6:
_options.append("-6")
if self.exclude_file:
_options.append("--exclude-from")
_options.append(self.exclude_file)
return _options
def run(self, ctx={}):
_args = self.options
_args.append(self.upstream_url)
_args.append(self.local_dir)
log_file = self.get_log_file(ctx)
new_env = os.environ.copy()
if self.password is not None:
new_env["RSYNC_PASSWORD"] = self.password
self.p = sh.rsync(*_args, _env=new_env, _out=log_file, _err=log_file,
_out_bufsize=1, _bg=True)
class ShellProvider(MirrorProvider):
def __init__(self, name, command, local_dir, log_dir,
log_file="/dev/null", interval=120, hooks=[]):
super(ShellProvider, self).__init__(name, local_dir, log_dir, log_file,
interval, hooks)
self.command = command.split()
def run(self, ctx={}):
log_file = self.get_log_file(ctx)
new_env = os.environ.copy()
new_env["TUNASYNC_MIRROR_NAME"] = self.name
new_env["TUNASYNC_LOCAL_DIR"] = self.local_dir
new_env["TUNASYNC_LOG_FILE"] = log_file
_cmd = self.command[0]
_args = [] if len(self.command) == 1 else self.command[1:]
cmd = sh.Command(_cmd)
self.p = cmd(*_args, _env=new_env, _out=log_file,
_err=log_file, _out_bufsize=1, _bg=True)
# vim: ts=4 sw=4 sts=4 expandtab