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file_backup.py
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file_backup.py
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import json
import logging
import os
import threading
import time
import uuid
from itertools import chain
import file_backup_helper
import hostSession
import xlogging
import net_common
import db_backup_logic
import remote_helper
import logicService
import samba
_logger = xlogging.getLogger(__name__)
import BoxLogic
import kvmfilebackup
import Utils
KVM_HOST_START_TIMEOUTS_SECONDS = 60 * 10
NAS_MOUNT_PATH = r'/mnt/nas'
NAS_MOUNT_TIMEOUTS_SECONDS = 60 * 5
NAS_UMOUNT_TIMEOUTS_SECONDS = 60
BACKUP_MOUNT_PATH = r'/mnt/backup'
KVM_STOPPED_TIMEOUTS_SECONDS = 60 * 5
FILE_BACKUP_LOGIC_START_TIMEOUTS_SECONDS = 60
dynamic_config_path = '/etc/clw_backup.json'
DB_BACKUP_DEBUG_FILE = '/dev/shm/debug_db_backup'
class LoggerAdapter(logging.LoggerAdapter):
def process(self, msg, kwargs):
return '[{}] {}'.format(self.extra['prefix'], msg), kwargs
class FileBackup(threading.Thread):
def __init__(self, backup_params):
"""
:param backup_params:
{
'host_ident': str 主机标识
'name': str 可读性任务标识
'nas_type': str 'nfs' or 'cifs'
'nas_excludes': [str, ]
'nas_path': str nfs为 '172.16.1.3:/nfs_dir' cifs为 '\\172.16.1.3\cifs_dir'
'nas_user': str cifs 需要
'nas_pwd': str cifs 需要
'diskbytes': int 备份空间
'aio_server_ip':[(str, str), ]
'disksnapshots':[{'path':'', 'ident':''}, ]
'temp_qcow':'' 临时QCOW
'task_uuid': str
"enum_threads": int, # 枚举目录线程数量(初始值,后续根据配置文件调整)
"enum_level": int, # 枚举目录深度
"sync_threads": int, # 同步数据线程数量(初始值,后续根据配置文件调整)
"sync_queue_maxsize": int, # 同步任务队列深度
"dynamic_config_path": path, # 动态配置文件
"cores": int, # CPU数量
"memory_mbytes": int, # 内存大小
}
"""
self._backup_params = backup_params
super(FileBackup, self).__init__(name='FileBackup_{}'.format(self._backup_params['name']))
self.name = 'FileBackup_{}'.format(self._backup_params['name'])
self.logger = LoggerAdapter(_logger, {'prefix': self.name})
self.__linux_kvm_file_backup = None
self.error = None
self._helper = file_backup_helper.FileBackupHelper(self.name, self.logger)
self._has_sync_files = False
self._in_stopping = False
self._in_stopping_locker = threading.RLock()
self._is_host_online = False
def run(self):
self.logger.info('start logic, {}'.format(self._backup_params))
try:
self._do_work()
finally:
self.logger.info('end logic, {}'.format(self._backup_params))
def _do_work(self):
try:
self.__linux_kvm_file_backup = kvmfilebackup.KvmFileBackup(self._backup_params)
self.__linux_kvm_file_backup.start()
_guest_ip, _guest_mac = self.__linux_kvm_file_backup.get_ip_and_mac()
self._wait_host_online(_guest_ip)
self._send_backup_command()
self._poll_and_report_backup_status()
self._check_nbd_and_kvm()
self._finish_backup()
except Exception as e:
self.error = e
self.logger.error(r' failed {}'.format(e), exc_info=True)
self._clean_resource_when_failed()
finally:
self.__clean_temp_file()
self._report_finish(self._is_task_successful())
def _is_task_successful(self):
"""
1. 已经同步了文件 判断标志 self._has_sync_files
2. qemu-img文件存在且快照点存在
:return:bool
"""
if not self._has_sync_files:
self.logger.warning('_is_task_successful False, not sync file')
return False
qcow_file, ident = self._backup_params['disksnapshots'][-1]['path'], self._backup_params['disksnapshots'][-1][
'ident']
self.logger.debug('start check qcow valid {} {}'.format(qcow_file, ident))
if not os.path.exists(qcow_file):
self.logger.warning('_is_task_successful False, not exists qcow file')
return False
'''
[root@localhost ee49bfc175b844a8a23722e457b70f2a]# qemu-img snapshot 9e64e0d3161f4b5a8e7940b2445ed118.qcow -l
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1 00x800000000 b3c8cf3e50f74ce5ab6ae7865a7ed793 0 2019-01-24 14:33:43 00:00:00.000
2 10x800000000 b3c8cf3e50f74ce5ab6ae7865a7ed793 0 2019-01-24 14:35:22 00:00:00.000
同样的名字出现2次,说明是正常的
'''
info = net_common.get_info_from_syscmd(r'qemu-img snapshot {} -l'.format(qcow_file))
if info[0] == 0 and (info[1].count(ident) == 2):
return True # 确保 qcow文件中 快照点是2个
else:
self.logger.warning('_is_task_successful False, check qcow failed')
return False
@xlogging.convert_exception_to_value(False)
def _wait_kvm_stopped(self, timeouts_seconds):
if self.__linux_kvm_file_backup is None:
return True
for _ in range(timeouts_seconds):
if self.__linux_kvm_file_backup.is_active():
time.sleep(1)
else:
return True
return False
def _stop_kvm(self):
if self.__linux_kvm_file_backup is not None:
self.__linux_kvm_file_backup.kill()
def _wait_host_online(self, host_ip):
self._helper.connect(host_ip, KVM_HOST_START_TIMEOUTS_SECONDS)
ip_address = self._helper.config_gateway()
runner_dir = self._helper.fetch_patch(ip_address)
self._helper.start_logic(host_ip, FILE_BACKUP_LOGIC_START_TIMEOUTS_SECONDS, runner_dir)
self._helper.begin_dropcache()
self._is_host_online = True
def _send_backup_command(self):
self._helper.mount_nas({'nas_type': self._backup_params['nas_type'], 'mount_cmd': self._get_mount_cmd(),
'mount_path': NAS_MOUNT_PATH, 'timeouts_seconds': NAS_MOUNT_TIMEOUTS_SECONDS})
self._helper.mount_backup({'mount_path': BACKUP_MOUNT_PATH})
self._helper.backup({
'excludes': self._backup_params['nas_excludes'],
'skip_scan': True,
'enum_threads': self._backup_params['enum_threads'],
'enum_queue_maxsize': self._backup_params['enum_queue_maxsize'],
'enum_level': self._backup_params['enum_level'],
'sync_threads': self._backup_params['sync_threads'],
'sync_queue_maxsize': self._backup_params['sync_queue_maxsize'],
'dynamic_config_path': self._backup_params['dynamic_config_path'],
})
def _check_nfs_path(self):
nas_path = self._backup_params['nas_path']
processing_path = nas_path.split(':')
processing_path[1] = '\"' + processing_path[1] + '\"'
nas_path = ":".join(processing_path)
_logger.info('nas_nfs_path is :{}'.format(nas_path))
return nas_path
def _get_mount_cmd(self):
if self._backup_params['nas_type'].upper() == 'NFS':
return r'mount -t nfs {} {} -o ro,soft,noatime,nodiratime,timeo=60'.format(
self._check_nfs_path(), NAS_MOUNT_PATH)
elif self._backup_params['nas_type'].upper() == 'CIFS':
return r'mount -t cifs -o nomapposix,ro,soft,username="{}",password="{}" "{}" "{}"'.format(
self._backup_params['nas_user'], self._backup_params['nas_pwd'],
self._backup_params['nas_path'].replace('\\', '/'), NAS_MOUNT_PATH)
else:
xlogging.raise_system_error(
'内部错误,无效的NAS类型', 'invalid nas type : {}'.format(self._backup_params['nas_type']), 1)
@xlogging.convert_exception_to_value(None)
def _report_warning_info_when_successful(self, status):
description, debug = status['finished_description'], status['finished_debug']
if not description:
return
payload = {'status': 'warning_info', 'description': description, 'debug': debug}
task_type, task_uuid = 'nas_file_backup', self._backup_params['task_uuid']
return hostSession.http_report_task_status(task_type, task_uuid, payload)
def _poll_and_report_backup_status(self):
while True:
self._check_nbd_and_kvm()
time.sleep(10)
status = self._helper.query_backup_status()
if (not self._has_sync_files) and int(status['current_sync_files']) > 0: # 更新self._has_sync_files 字段
self._has_sync_files = True
if status['step'][0] == 'step_sync':
self._report_sync_percent(status)
elif status['step'][0] == 'step_fin':
if status['finished_successful']:
self._has_sync_files = True
return self._report_warning_info_when_successful(status)
else:
self._helper.debug_when_backup_failed(status['finished_description'])
xlogging.raise_system_error(status['finished_description'], status['finished_debug'], 1)
def _check_nbd_and_kvm(self):
if not self.__linux_kvm_file_backup.nbd_alive():
xlogging.raise_system_error('nbd组件异常退出', 'nbd not alive', 143)
if not self.__linux_kvm_file_backup.kvm_alive():
xlogging.raise_system_error('代理虚拟机异常退出', 'kvm not alive', 145)
return True
def _finish_backup(self):
self.__umount_backup(True)
self.__clean_resource_in_kvm()
self.__clean_kvm_resource(True)
def _clean_resource_when_failed(self):
if self.__linux_kvm_file_backup is not None and self.__linux_kvm_file_backup.is_active():
self.__umount_backup(False)
self.__clean_resource_in_kvm()
self.__clean_kvm_resource(False, 0)
def __clean_temp_file(self):
try:
if not os.path.exists(r'/dev/shm/not_remove_boot_qcow_file_backup'):
if os.path.exists(self._backup_params['temp_qcow']):
os.remove(self._backup_params['temp_qcow'])
else:
self.logger.info(r'do NOT clean file : {}'.format(self._backup_params['temp_qcow']))
except Exception as e:
self.logger.warning(r'clean file {} failed : {}'.format(self._backup_params.get('temp_qcow', 'None'), e))
def __clean_kvm_resource(self, raise_exception, waite_seconds=KVM_STOPPED_TIMEOUTS_SECONDS):
try:
if not self._wait_kvm_stopped(waite_seconds):
self._stop_kvm()
except Exception as e:
if raise_exception:
raise
else:
self.logger.warning(r'stop_kvm failed : {}'.format(e), exc_info=True)
if self.__linux_kvm_file_backup:
self.__linux_kvm_file_backup.join()
self.__linux_kvm_file_backup = None
def __clean_resource_in_kvm(self):
self._helper.umount_nas({'mount_path': NAS_MOUNT_PATH, 'timeouts_seconds': NAS_UMOUNT_TIMEOUTS_SECONDS})
self._helper.package_log_files_and_fetch()
self._helper.shutdown()
def __umount_backup(self, raise_exception):
try:
self._helper.umount_backup({'mount_path': BACKUP_MOUNT_PATH})
except Exception as e:
if raise_exception:
raise
else:
self.logger.warning(r'umount_backup failed : {}'.format(e), exc_info=True)
@xlogging.convert_exception_to_value(None)
def _report_sync_percent(self, rsync_status):
percent_str = rsync_status['current_percent']
return self.report_progress(100 * 100, int(percent_str[:-1]) * 100, rsync_status)
@xlogging.convert_exception_to_value(None)
def report_progress(self, total, index, rsync_status):
payload = {'status': 'transfer_data', 'progressIndex': index, 'progressTotal': total,
'rsync_status': rsync_status}
task_type, task_uuid = 'nas_file_backup', self._backup_params['task_uuid']
return hostSession.http_report_task_status(task_type, task_uuid, payload)
def _report_finish(self, successful):
code = BoxLogic.BackupFinishCode.Successful if successful else BoxLogic.BackupFinishCode.Failed
return hostSession.http_report_backup_finish(self._backup_params['host_ident'], code)
@xlogging.convert_exception_to_value(None)
def stop(self):
with self._in_stopping_locker:
if self._in_stopping:
self.logger.warning('_in_stopping , return')
return
else:
self._in_stopping = True
try:
if self.is_alive():
self._helper.set_quit()
self._helper.cancle_backup('{}')
else:
self.logger.warning('not alive, skip cancel')
finally:
with self._in_stopping_locker:
self._in_stopping = False
def end_transfer_data(self):
"""
通知rsync尽快结束,并上报状态为“成功”
"""
self._helper.cancle_backup('{}')
def set_nas_dynamic_params(self, nas_dynamic):
"""
将NAS动态参数写入kvm文件:dynamic_config_path
"""
global dynamic_config_path
if not self._is_host_online:
return None
nas_dynamic = json.dumps(nas_dynamic).replace('"', '\\"') # 命令文本:echo "{\"age\": 21}" > "tst.json"
self._helper.run_on_remote('echo "{}" > "{}"'.format(nas_dynamic, dynamic_config_path))
return 'ok'
class DBBackup(threading.Thread):
def __init__(self, backup_params):
"""
:param backup_params:
{
'name': self._task_name,
'disksnapshots': list(),
'temp_qcow': '',
'diskbytes': -1,
'host_ident': uuid,
'aio_server_ip': '172.29.16.2',
'task_uuid': uuid,
'vga':std,
'cores':'',
'sockets':'',
'memory_mbytes':''
}
"""
self._backup_params = backup_params
super(DBBackup, self).__init__(name='DBBackup_{}'.format(self._backup_params['name']))
self.name = 'DBBackup_{}'.format(self._backup_params['name'])
self.logger = LoggerAdapter(_logger, {'prefix': self.name})
self.__linux_kvm_file_backup = None
self.error = None
self._helper = None
self._proxy = None
self._has_sync_files = False
self._deploy_mod = self._backup_params.get('deploy_mod', os.path.exists('/dev/shm/db_backup_deploy'))
self._in_stopping = False
self._in_stopping_locker = threading.RLock()
self._quit_flag = False
self._quit_flag_locker = threading.RLock()
self._guest_ip = None
def run(self):
self.logger.info('start logic, {}'.format(self._backup_params))
try:
self._do_work()
finally:
self.logger.info('end logic, {}'.format(self._backup_params))
def _do_work(self):
try:
self.__linux_kvm_file_backup = db_backup_logic.KvmDBBackup(self._backup_params)
self.__linux_kvm_file_backup.start()
self._guest_ip, _guest_mac = self.__linux_kvm_file_backup.get_ip_and_mac()
if self._deploy_mod:
self.logger.info('模式:部署模式')
self._waite_kvm()
else:
self.logger.info('模式:备份模式')
self._report_info({'status': ('report_mac_info', 'report_mac_info'), 'mac': _guest_mac})
self._report_info({'status': ('初始化备份代理', 'start_kvm')})
self._wait_host_online(self._guest_ip)
self._report_info({'status': ('初始化远端备份代理', 'notify_remote_connect')})
self._notify_remote_connect_begin(self._guest_ip) # 让远端连入kvm
self._send_backup_command()
self._poll_and_report_backup_status()
self._check_nbd_and_kvm()
self._finish_backup()
except Exception as e:
self.error = e
self.logger.error(r' failed {}'.format(e), exc_info=True)
self._pause_in_debug_mod('before _clean_resource_when_failed')
self._clean_resource_when_failed()
finally:
self._report_finish(self._is_task_successful())
@xlogging.convert_exception_to_value(None)
def _pause_in_debug_mod(self, msg):
if not os.path.exists(DB_BACKUP_DEBUG_FILE):
return
file_name = '/tmp/pause_db_backup_{}'.format(time.time())
with open(file_name, 'w'):
pass
while os.path.exists(file_name):
self.logger.warning('{} pause until {} removed!'.format(msg, file_name))
time.sleep(5)
def _notify_remote_connect_begin(self, _guest_ip):
master_ident = self._backup_params['db_backup_params']['master_ident']
data = json.dumps({'kvm_ip': _guest_ip, 'type': 'start_kvm_channel', 'remote_ident': master_ident})
self.logger.info('begin _notify_remote_connect {}'.format(data))
count = 120 # 1分钟
while count > 0:
self.check_quit()
try:
logicService.JsonFuncV2(master_ident, data, bytes())
except Exception as e:
if count % 2 == 0:
_logger.error('_notify_remote_connect_begin JsonFuncV2 error:{}'.format(e), exc_info=True)
time.sleep(5)
count -= 1
else:
break
else:
xlogging.raise_system_error('启动远端备份代理程序失败',
'_notify_remote_connect_begin failed:{}'.format(data),
1140, self.logger)
self.logger.info('end _notify_remote_connect {}'.format(data))
@xlogging.convert_exception_to_value(None)
def _notify_remote_connect_end(self):
data = json.dumps({'type': 'stop_kvm_channel'})
master_ident = self._backup_params['db_backup_params']['master_ident']
try:
logicService.JsonFuncV2(master_ident, data, bytes())
except Exception as e:
_logger.warning('_notify_remote_connect_end error:{}'.format(e))
def _waite_kvm(self):
while True:
self.check_quit()
if self.__linux_kvm_file_backup and self.__linux_kvm_file_backup.is_active():
time.sleep(10)
continue
else:
break
if self.__linux_kvm_file_backup:
self.__linux_kvm_file_backup.join()
self.__linux_kvm_file_backup = None
def _wait_host_online(self, _guest_ip):
self.logger.info('_wait_host_online begin')
self._proxy = remote_helper.RemoteProxy(_guest_ip, logicService.get_communicator(), self.logger,
self.check_quit).create()
self.logger.info('_wait_host_online end')
def _send_backup_command(self):
args_dict = dict()
args_dict['db_backup_params'] = self._backup_params['db_backup_params']
args_dict['in_debug_mod'] = os.path.exists(DB_BACKUP_DEBUG_FILE)
args_dict['kvm_ip_info'] = self._backup_params['kvm_ip_info']
for disk in self._backup_params['disksnapshots']:
if disk['type'] == 'cache_disk':
args_dict.setdefault('lvm_config', {'disks': list()})
args_dict['lvm_config']['disks'].append(
{
'disk_bytes': disk['disk_bytes']
}
)
for net in self._backup_params['nets']:
if net['con_type'] == 'bond':
args_dict['kvm_ip_info']['mac'] = net['mac']
break
self.logger.info('init db_backup_logic MainLogic {}'.format(args_dict))
self._helper = remote_helper.ModuleMapper('db_backup_logic', 'MainLogic', self._proxy, self.logger, args_dict)
self._helper.execute('start_backup', {'name': 'xiao ming'})
def __clean_kvm_resource(self, raise_exception, waite_seconds=KVM_STOPPED_TIMEOUTS_SECONDS):
try:
if not self._wait_kvm_stopped(waite_seconds):
self._stop_kvm()
except Exception as e:
if raise_exception:
raise
else:
self.logger.warning(r'stop_kvm failed : {}'.format(e), exc_info=True)
if self.__linux_kvm_file_backup:
self.__linux_kvm_file_backup.join()
self.__linux_kvm_file_backup = None
def _stop_kvm(self):
if self.__linux_kvm_file_backup is not None:
self.__linux_kvm_file_backup.kill()
@xlogging.convert_exception_to_value(False)
def _wait_kvm_stopped(self, timeouts_seconds):
if self.__linux_kvm_file_backup is None:
return True
for _ in range(timeouts_seconds):
if self.__linux_kvm_file_backup.is_active():
time.sleep(1)
else:
return True
return False
@xlogging.convert_exception_to_value(None)
def _clean_resource_when_failed(self):
self._notify_remote_connect_end()
if self.__linux_kvm_file_backup is not None and self.__linux_kvm_file_backup.is_active():
if self._proxy:
_call_proxy = remote_helper.FunctionMapper(self._proxy, self.logger)
_call_proxy.execute('common_funcs', 'shutdown', {'logic': self._backup_params['logic']})
# self.__umount_backup(False)
# self.__clean_resource_in_kvm()
self.__clean_kvm_resource(False, 0)
def _finish_backup(self):
self._notify_remote_connect_end()
if self.__linux_kvm_file_backup is not None and self.__linux_kvm_file_backup.is_active():
if self._proxy:
_call_proxy = remote_helper.FunctionMapper(self._proxy, self.logger)
_call_proxy.execute('common_funcs', 'shutdown', {'logic': self._backup_params['logic']})
# self.__umount_backup(True)
# self.__clean_resource_in_kvm()
self.__clean_kvm_resource(True)
def _is_task_successful(self):
"""
2. qemu-img文件存在且快照点存在
:return:bool
"""
if not self._deploy_mod:
if not self._has_sync_files: # 自动模式下,没有同步文件,认为任务失败
return False
for disk_info in self._backup_params['disksnapshots']:
qcow_file, ident = disk_info['images'][-1]['path'], disk_info['images'][-1]['ident']
self.logger.debug('start check qcow valid {} {}'.format(qcow_file, ident))
if not os.path.exists(qcow_file):
self.logger.warning('_is_task_successful False, not exists qcow file')
return False
'''
[root@localhost ee49bfc175b844a8a23722e457b70f2a]# qemu-img snapshot 9e64e0d3161f4b5a8e7940b2445ed118.qcow -l
Snapshot list:
ID TAG VM SIZE DATE VM CLOCK
1 00x800000000 b3c8cf3e50f74ce5ab6ae7865a7ed793 0 2019-01-24 14:33:43 00:00:00.000
2 10x800000000 b3c8cf3e50f74ce5ab6ae7865a7ed793 0 2019-01-24 14:35:22 00:00:00.000
同样的名字出现2次,说明是正常的
'''
info = net_common.get_info_from_syscmd(r'qemu-img snapshot {} -l'.format(qcow_file))
if info[0] == 0 and (info[1].count(ident) == 2):
pass # 确保 qcow文件中 快照点是2个
else:
self.logger.warning('_is_task_successful False, check qcow failed')
return False
return True
def _report_finish(self, successful):
self._report_info({'status': ('report_finish', 'report_finish'), 'successful': successful})
def _report_info(self, payload):
self.logger.debug('_report_info {}'.format(payload))
task_type, task_uuid = 'db_backup', self._backup_params['task_uuid']
ret = hostSession.http_report_task_status(task_type, task_uuid, payload)
assert ret['rev'] == 0
def _poll_and_report_backup_status(self):
while True:
self._check_nbd_and_kvm()
time.sleep(10)
try:
status_str, _ = self._helper.execute('poll')
except Exception as e:
self.logger.warning('poll status error:{}'.format(e))
continue
status = json.loads(status_str)
if (not self._has_sync_files) and int(status['progressIndex']) > 0: # 更新self._has_sync_files 字段
self._has_sync_files = True
if status['finished']:
if status['successful']:
self._has_sync_files = True
self._pause_in_debug_mod('任务成功了^_^o')
return
else:
error_msg = status['error_msg']
if error_msg and len(error_msg) == 3:
xlogging.raise_system_error(error_msg[0], error_msg[1], error_msg[2])
xlogging.raise_system_error('备份失败', 'unknown error', 2525)
self._report_info(status)
def _check_nbd_and_kvm(self):
if not self.__linux_kvm_file_backup.nbd_alive():
xlogging.raise_system_error('nbd组件异常退出', 'nbd not alive', 143)
if not self.__linux_kvm_file_backup.kvm_alive():
xlogging.raise_system_error('代理虚拟机异常退出', 'kvm not alive', 145)
return True
@xlogging.convert_exception_to_value(None)
def stop(self):
with self._in_stopping_locker:
if self._in_stopping:
self.logger.warning('_in_stopping , return')
return
else:
self._in_stopping = True
try:
if self.is_alive():
with self._quit_flag_locker:
self._quit_flag = True
if self._helper:
self._helper.execute('stop_backup') # 通知远端停止备份
else:
self.logger.warning('not alive, skip cancel')
finally:
with self._in_stopping_locker:
self._in_stopping = False
def check_quit(self):
with self._quit_flag_locker:
if self._quit_flag:
xlogging.raise_system_error(r'用户取消操作', 'self._quit', 1, logger=self.logger)
def end_transfer_data(self):
self._helper.execute('stop_backup')
class FileSync(threading.Thread):
def __init__(self, backup_params):
"""
backup_params = {
'name': '任务名称',
'task_uuid': 'uuid',
'target_host_ident': 'xx'
'aio_ip':''
'kvm_used_params': { # 启动kvm使用的参数
'logic': 'linux',
‘disk_ctl_type’:'scsi-hd',
'aio_server_ip': '172.29.16.2',
'disksnapshots': [
{
'images': [
{
'path': '/home/mnt/nodes/b7f1e05d286d4aad933fd49ff8eeceb9/images/caafc820558645198cf01ef30a27c8cb/f39e736f6abf45ae9f8d8cc36bf2287b.qcow',
'ident': 'e26d469412ef464ea22fcc5f39a00dce'}
],
'nbd_type': 'gznbd' # gznbd or nbdrw,
'scsi_id': xxxxx
}
],
'qcow_files': {
{
'base': '/home/kvm_rpc/Clerware-7-x86_64-1611.mini.loader.qcow2',
'new': '/tmp/tmp_qcow/mtest.qcow2',
'qcow_type': 'with_base' #
}
}
},
'mount_file_system_params': {
'mount_root': 'some root',
'read_only': True,
'others'
},
'samba_params': {
'username': 'zbtest',
'userpwd': '123456',
'hostname': 'e26d469412ef464ea22fcc5f39a00dce',
'read_only': True
},
'sync_params': {
'target_dir': '', # 同步目标的目录, 每次任务不同 ClwData201907031423
}
}
"""
self._backup_params = backup_params
super(FileSync, self).__init__(name='FileSync_{}'.format(self._backup_params['name']))
self.name = 'FileSync_{}'.format(self._backup_params['name'])
self.logger = LoggerAdapter(_logger, {'prefix': self.name})
self._share_logic = None
self.error = None
self._helper = None
self._proxy = None
self._has_sync_files = False
self._deploy_mod = self._backup_params.get('deploy_mod', os.path.exists('/dev/shm/db_backup_deploy'))
self._in_stopping = False
self._in_stopping_locker = threading.RLock()
self._quit_flag = False
self._quit_flag_locker = threading.RLock()
self._guest_ip = None
self._samba_user = None
self._samba_mount_handle = None
def run(self):
self.logger.info('start logic, {}'.format(self._backup_params))
try:
self._do_work()
finally:
self.logger.info('end logic, {}'.format(self._backup_params))
def _do_work(self):
try:
self.logger.debug("========================samba===============================")
self._share_logic = samba.AddShareLogic(self._backup_params['kvm_used_params'],
self._backup_params['mount_file_system_params'],
self._backup_params['samba_params'],
check_fun=self.check_quit,
logger=self.logger)
self.logger.debug("========================_share_logic===============================")
self._share_logic.share()
self.logger.debug("========================get_ip_and_mac===============================")
self._guest_ip, _ = self._share_logic.get_ip_and_mac()
self.logger.debug("========================get_proxy===============================")
self._proxy = self._share_logic.get_proxy()
self._report_info({'status': ('启动远端代理', 'notify_remote_connect')})
self.logger.debug("========================_notify_remote_connect_begin===============================")
self._notify_remote_connect_begin(self._guest_ip) # 让远端连入kvm
self._report_info({'status': ('发送同步指令', 'send sync cmd')})
self.logger.debug("========================send_sync_command===============================")
self._send_sync_command()
self.logger.debug("========================_poll_and_report_sync_status===============================")
self._poll_and_report_sync_status()
except Exception as e:
self.error = e
self.logger.error(r' failed {}'.format(e), exc_info=True)
self._pause_in_debug_mod('before _clean_resource_when_failed')
self.logger.debug("========================_clean!!!!!!!!!!===============================")
finally:
self.logger.debug("========================_clean_resource===============================")
self._clean_resource()
self.logger.debug("========================_report_finish===============================")
self._report_finish(self._is_task_successful())
def _mount_file_system_2(self):
pass
def _clean_resource(self):
if self._share_logic:
self._share_logic.end()
self._share_logic = None
@xlogging.convert_exception_to_value(None)
def _pause_in_debug_mod(self, msg):
if not os.path.exists(DB_BACKUP_DEBUG_FILE):
return
file_name = '/tmp/pause_db_backup_{}'.format(time.time())
with open(file_name, 'w'):
pass
while os.path.exists(file_name):
self.logger.warning('{} pause until {} removed!'.format(msg, file_name))
time.sleep(5)
def _notify_remote_connect_begin(self, _guest_ip):
master_ident = self._backup_params['target_host_ident']
if os.path.exists('/dev/shm/_tmp_fsync001'):
app_path, work_dir = 'd:\\Python36\\python.exe', 'd:\\code\\agent_application'
else:
app_path = '|current|\\Python36\\python.exe'
work_dir = '|current|\\agent_application'
flag_path = 'app_outs.txt'
event_name = 'Global\\FileSyncEvent{}'.format(self._backup_params['task_uuid'])
app_params = ('{script_path}'
' --without_agent'
' --aio_ip {aio_ip}'
' --ip_in_kvm {kvm_ip}'
' --flag_path {flag_path}'
' --ident {ident}'
' --event_name {event_name}').format(
script_path='application_main.py',
aio_ip=self._backup_params['sync_params']['aio_ip'],
kvm_ip=_guest_ip,
flag_path=flag_path,
ident=self._backup_params['task_uuid'],
event_name=event_name
)
data = {
'exec_and_wait': {
'app_path': app_path,
'params': app_params,
'work_dir': work_dir,
'output_path': flag_path,
'event_name': event_name
}
}
data = json.dumps(data)
self.logger.info('begin _notify_remote_connect {} {}'.format(master_ident, data))
count = 120 # 1分钟
while count > 0:
self.check_quit()
try:
logicService.JsonFunc(master_ident, data)
except Exception as e:
if count % 2 == 0:
_logger.error('_notify_remote_connect_begin JsonFuncV2 error:{}'.format(e), exc_info=True)
time.sleep(5)
count -= 1
else:
break
else:
xlogging.raise_system_error('启动远端备份代理程序失败',
'_notify_remote_connect_begin failed:{}'.format(data),
1140, self.logger)
# self._pause_in_debug_mod('等待远端客户端连入(kvm ip {})'.format(_guest_ip))
self.logger.info('end _notify_remote_connect {}'.format(data))
@xlogging.convert_exception_to_value(None)
def _notify_remote_connect_end(self):
data = json.dumps({'type': 'stop_kvm_channel'})
master_ident = self._backup_params['target_host_ident']
try:
logicService.JsonFuncV2(master_ident, data, bytes())
except Exception as e:
_logger.warning('_notify_remote_connect_end error:{}'.format(e))
def _waite_kvm(self):
while True:
self.check_quit()
if self._share_logic and self._share_logic.is_active():
time.sleep(10)
continue
else:
break
if self._share_logic:
self._share_logic.join()
self._share_logic = None
def _send_sync_command(self):
"""
args_dict = {
'samba_params':{
'username':'test',
'password':'f',
'root_url':'\\172.16.1.3\share\aio',
'drive_letter_and_sub_url_list':[['Y', r'\\172.16.1.3\share\aio\目录y']],
},
'vdisks':[{
'file_vhd':'Y:\\d1\d2.vhdx',
'part_num_and_drive_letter_list':[[3, 'D']]
}],
'sync_source':['D:\\d1\file1.txt', 'D:\\d1\dir1']
'sync_destination': 'd:\\clw20190708\'
}
"""
args_dict = dict()
self._generate_samba_params(args_dict)
args_dict['ident'] = self._backup_params['task_uuid']
args_dict['vdisks'] = self._backup_params['sync_params']['vdisks']
args_dict['sync_source'] = self._backup_params['sync_params']['sync_source']
args_dict['sync_destination'] = self._backup_params['sync_params']['sync_destination']
args_dict['in_debug_mod'] = os.path.exists(DB_BACKUP_DEBUG_FILE)
self.logger.info('_send_sync_command {}'.format(args_dict))
self._helper = remote_helper.ModuleMapper('file_sync_logic_local', 'MainLogic', self._proxy, self.logger,
args_dict)
self._helper.execute('start_sync')
def _generate_samba_params(self, args_dict):
def _fill_partition_info():
v_name = partition['VolumeLabel']
l_name = partition['Letter']
if v_name and l_name:
_letter2name[l_name.upper()] = self.get_name(partition)
args_dict['samba_params'] = {
'username': self._backup_params['samba_params']['username'],
'password': self._backup_params['samba_params']['userpwd'],
'root_url': r'\\{}\{}\{}'.format(self._backup_params['sync_params']['aio_ip'],
self._backup_params['samba_params']['username'],
self._backup_params['samba_params']['hostname']),
'drive_letter_and_sub_url_list': list()
}
_letter2name = dict() # 获取所有需要的卷标
for include_range in self._backup_params['mount_file_system_params']['include_ranges']: # todo 支持linux
for partition in include_range['ranges']:
_fill_partition_info()
for partition in self._backup_params['mount_file_system_params']['windows_volumes']:
_fill_partition_info()
for letter, vol_name in _letter2name.items():
if letter == 'C':
letter = 'Z'
args_dict['samba_params']['drive_letter_and_sub_url_list'].append(
(letter, args_dict['samba_params']['root_url'] + '\\' + vol_name)
)
@staticmethod
def get_name(partition):
v_name = partition['VolumeLabel']
l_name = partition['Letter']
if v_name and l_name:
return "{}({})".format(v_name, l_name)
elif v_name:
return "{}".format(v_name)
elif l_name:
return "{}".format(l_name)
else:
return 'volume{}'.format(uuid.uuid4().hex)
def _is_task_successful(self):
if not self._has_sync_files: # 自动模式下,没有同步文件,认为任务失败
return False
else:
return True
def _report_finish(self, successful):
self._report_info({'status': ('report_finish', 'report_finish'), 'successful': successful})
def _report_info(self, payload):
self.logger.debug('_report_info {}'.format(payload))
task_type, task_uuid = 'file_sync', self._backup_params['task_uuid']
ret = hostSession.http_report_task_status(task_type, task_uuid, payload)
assert ret['rev'] == 0
def _poll_and_report_sync_status(self):
while True:
self._check_nbd_and_kvm()
time.sleep(10)
try:
status_str, _ = self._helper.execute('poll')
except Exception as e:
self.logger.warning('poll status error:{}'.format(e))
continue
status = json.loads(status_str)
if (not self._has_sync_files) and int(status['progressIndex']) > 0: # 更新self._has_sync_files 字段
self._has_sync_files = True
if status['finished']:
if status['successful']:
self._has_sync_files = True
self._pause_in_debug_mod('任务成功了^_^o')
return
else:
error_msg = status['error_msg']
if error_msg and len(error_msg) == 3:
xlogging.raise_system_error(error_msg[0], error_msg[1], error_msg[2])
xlogging.raise_system_error('备份失败', 'unknown error', 2525)
self._report_info(status)
def _check_nbd_and_kvm(self):
if not self._share_logic.nbd_alive():
xlogging.raise_system_error('nbd组件异常退出', 'nbd not alive', 143)
if not self._share_logic.kvm_alive():
xlogging.raise_system_error('代理虚拟机异常退出', 'kvm not alive', 145)
return True
@xlogging.convert_exception_to_value(None)
def stop(self):
with self._in_stopping_locker:
if self._in_stopping:
self.logger.warning('_in_stopping , return')
return
else:
self._in_stopping = True
try:
if self.is_alive():
with self._quit_flag_locker:
self._quit_flag = True
else:
self.logger.warning('not alive, skip cancel')
finally:
with self._in_stopping_locker:
self._in_stopping = False
def check_quit(self):
with self._quit_flag_locker:
if self._quit_flag:
xlogging.raise_system_error(r'用户取消操作', 'self._quit', 1, logger=self.logger)
class FileBackupManager(object):
def __init__(self):
self._instance = dict()
self._locker = threading.RLock()
def new(self, key, params):
global dynamic_config_path
params.update({'dynamic_config_path': dynamic_config_path})
task_type = params.pop('task_type', 'file_backup')
ins = self._fetch(key)
if ins:
_logger.warning('FileBackupManager new fail, key:{} is already in'.format(key))
else:
with self._locker:
if task_type == 'file_backup':
t = FileBackup(params)
elif task_type == 'db_backup':
t = DBBackup(params)
elif task_type == 'file_sync':
t = FileSync(params)
else: