def test_batteriesCommon():
d1 = ReplDict()
l1 = ReplLockManager(autoUnlockTime=30.0)
d2 = ReplDict()
l2 = ReplLockManager(autoUnlockTime=30.0)
a = [getNextAddr(), getNextAddr()]
o1 = TestObj(a[0], [a[1]], TEST_TYPE.AUTO_TICK_1, consumers=[d1, l1])
o2 = TestObj(a[1], [a[0]], TEST_TYPE.AUTO_TICK_1, consumers=[d2, l2])
doAutoTicks(10.0, stopFunc=lambda: o1.isReady() and o2.isReady())
assert o1.isReady() and o2.isReady()
d1.set('testKey', 'testValue', sync=True)
doAutoTicks(3.0, stopFunc=lambda: d2.get('testKey') == 'testValue')
assert d2['testKey'] == 'testValue'
d2.pop('testKey', sync=True)
doAutoTicks(3.0, stopFunc=lambda: d1.get('testKey') == None)
assert d1.get('testKey') == None
assert l1.tryAcquire('test.lock1', sync=True) == True
assert l2.tryAcquire('test.lock1', sync=True) == False
assert l2.isAcquired('test.lock1') == False
l1.release('test.lock1', sync=True)
assert l2.tryAcquire('test.lock1', sync=True) == True
assert d1.setdefault('keyA', 'valueA', sync=True) == 'valueA'
assert d2.setdefault('keyA', 'valueB', sync=True) == 'valueA'
d2.pop('keyA', sync=True)
assert d2.setdefault('keyA', 'valueB', sync=True) == 'valueB'
o1.destroy()
o2.destroy()
l1.destroy()
l2.destroy()
import time
from pysyncobj import SyncObj
from pysyncobj.batteries import ReplCounter, ReplDict
dict1 = ReplDict()
#syncObj = SyncObj('localhost:4321', ['localhost:4322', 'localhost:4323'], consumers=[dict1])
syncObj = SyncObj('localhost:4321', [], consumers=[dict1])
print dir(syncObj)
while True:
if syncObj.isReady():
print dict1.get('key')
time.sleep(1)
def test_ReplDict():
d = ReplDict()
d.reset({
1: 1,
2: 22,
}, _doApply=True)
assert d.rawData() == {
1: 1,
2: 22,
}
d.__setitem__(1, 10, _doApply=True)
assert d.rawData() == {
1: 10,
2: 22,
}
d.set(1, 20, _doApply=True)
assert d.rawData() == {
1: 20,
2: 22,
}
assert d.setdefault(1, 50, _doApply=True) == 20
assert d.setdefault(3, 50, _doApply=True) == 50
d.update({
5: 5,
6: 7,
}, _doApply=True)
assert d.rawData() == {
1: 20,
2: 22,
3: 50,
5: 5,
6: 7,
}
assert d.pop(3, _doApply=True) == 50
assert d.pop(6, _doApply=True) == 7
assert d.pop(6, _doApply=True) == None
assert d.pop(6, 0, _doApply=True) == 0
assert d.rawData() == {
1: 20,
2: 22,
5: 5,
}
assert d[1] == 20
assert d.get(2) == 22
assert d.get(22) == None
assert d.get(22, 10) == 10
assert len(d) == 3
assert 2 in d
assert 22 not in d
assert sorted(d.keys()) == [1, 2, 5]
assert sorted(d.values()) == [5, 20, 22]
assert d.items() == d.rawData().items()
d.clear(_doApply=True)
assert len(d) == 0
class RaftServer(JSBASE):
def __init__(self, port, members, secret=""):
JSBASE.__init__(self)
self._members = members
self.port = port
self.dict1 = ReplDict()
remotes = ["%s:%s" % item for item in self.members]
cfg = SyncObjConf(autoTick=True)
cfg.onReady = self.onReady
cfg.password = secret
cfg.appendEntriesPeriod = 0.01
# cfg.appendEntriesUseBatch = True
cfg.raftMinTimeout = 0.4
cfg.raftMaxTimeout = 1.4
cfg.dynamicMembershipChange = True
cfg.onStateChanged = None
cfg.commandsWaitLeader = False
cfg.connectionRetryTime = 5.0 #connect to other down nodes every so many secs
cfg.connectionTimeout = 3.5
cfg.leaderFallbackTimeout = 10.0
# cfg.journalFile = "/tmp/raft_%s"%self.port
# cfg.leaderFallbackTimeout = True
cfg.logCompactionMinEntries = 1000
cfg.logCompactionMinTime = 60
self.logger.debug("port:%s" % self.port)
self.logger.debug("members:%s" % remotes)
# self.logger.debug("secret:%s"%secret)
self.syncobj = SyncObj('localhost:%s' % port,
remotes,
consumers=[self.dict1],
conf=cfg)
# for i in range(100000000):
# time.sleep(0.001)
# # self.syncobj.doTick()
# from IPython import embed;embed(colors='Linux')
# s
while self.syncobj.isReady() == False:
time.sleep(1)
print("wait sync")
time.sleep(1)
self.start()
def onReady(self):
self.logger.debug("READY")
print(self.dict1.items())
# self.start()
@property
def members(self):
res = []
for item in self._members.split(","):
addr, port = item.split(":")
addr = addr.strip()
port = int(port)
res.append((addr, port))
return res
def start(self):
c = self.dict1.get('test:%s' % self.port)
if c == None:
self.logger.debug("initial value for:%s" % self.port)
self.dict1.set('test:%s' % self.port, 0, sync=True)
self.logger.debug("initial value DONE:%s" % self.port)
speed = 0.1
previnsert = 0.0
prevprint = 0.0
for i in range(100000000):
time.sleep(0.001)
last = time.time()
if last > previnsert + 0.1:
# print("insert")
c = self.dict1.get('test:%s' % self.port)
c = c + 1
res = False
while res == False:
try:
self.dict1.set('test:%s' % self.port,
c,
sync=True,
timeout=5)
res = True
except Exception as e:
print("error in set:%s" % e.errorCode)
print(e)
time.sleep(0.1)
previnsert = last
if last > prevprint + 1.0:
print(self.dict1.items())
prevprint = last
class Master(SyncObj):
_rpc_methods = ['assign_volumn', 'assign_fid', 'find_volumn', 'find_writable_volumn',
'volumn_status', 'node_status']
def __init__(self, logger, host, port):
cfg = SyncObjConf()
cfg.fullDumpFile = 'raft.bin'
cfg.logCompactionMinTime = 10
cfg.useFork = True
self.serv = ThreadXMLRPCServer(
(host, port),
logRequests=True)
for name in self._rpc_methods:
self.serv.register_function(getattr(self, name))
self.logger = logger
self.host = host
self.port = port
self.lock = RWLock()
self.act_vol_serv = dict()
self.writable_vid = ReplList() # 可写的vid
self.vid = ReplCounter()
self.fkey = ReplCounter()
self.db = ReplDict()
super(Master, self).__init__(config.addr, config.clusters, cfg, consumers=[self.vid, self.fkey, self.db, self.writable_vid])
def update_master(self, masters):
pass
def _recover(self, vid, dead_vid, from_vid, to_vid):
from_proxy = ServerProxy(self.act_vol_serv[from_vid])
to_addr = self.act_vol_serv[to_vid]
self.logger.info('Begin to migrate volumn %d from %s to %s...!' % (vid, from_vid, to_vid))
from_proxy.migrate_volumn_to(vid, to_addr)
self.logger.info('Migrate volumn %d from %s to %s succeed!' % (vid, from_vid, to_vid))
vids = self.db[vid]
vids.remove(dead_vid)
vids.append(to_vid)
self.db.set(vid, vids, sync=True)
self.update_writable_volumn()
self.logger.info('Remove %s, append %s' % (dead_vid, to_vid))
def _check(self, dead_vid):
self.logger.info('Monitor dead volumn server %s ...' % dead_vid)
t = 60
while t > 0:
time.sleep(1)
if dead_vid in self.act_vol_serv.keys():
self.logger.info('Volumn %s becomes live. Stop recover' % dead_vid)
_thread.exit()
t -= 1
for vid, vvids in self.db.items():
if dead_vid in vvids:
for recov_vid in vvids:
if recov_vid != dead_vid and recov_vid in self.act_vol_serv.keys():
from_vid = recov_vid
avl_vids = list(set(self.act_vol_serv.keys()) - set(vvids))
if avl_vids:
to_vid = random.choice(avl_vids)
_thread.start_new_thread(self._recover, (vid, dead_vid, from_vid, to_vid))
else:
self.logger.warn('No available volumns to migrate')
break
def update_writable_volumn(self, checkLeader=True):
if checkLeader and not self._isLeader():
return
writable_vid = list()
for vid, vvids in self.db.items():
flag = True
for vvid in vvids:
if vvid not in self.act_vol_serv.keys():
flag = False
break
if flag:
writable_vid.append(vid)
self.writable_vid.reset(writable_vid, sync=True)
# 检查volumn下线的情况，搬运
def update_volumn(self, volumns):
if self._isLeader():
old_volumns = set(self.act_vol_serv.keys())
new_volumns = set([volumn[0] for volumn in volumns])
off_volumns = list(old_volumns - new_volumns)
if off_volumns:
self.logger.info('{} volumns become offline'.format(off_volumns))
for off_volumn in off_volumns:
_thread.start_new_thread(self._check, (off_volumn,))
self.act_vol_serv.clear()
for volumn in volumns:
self.act_vol_serv[volumn[0]] = volumn[1]
while not self._isReady():
time.sleep(1)
self.update_writable_volumn()
def assign_volumn(self, size):
vid = self.vid.inc(sync=True)
vids = random.sample(self.act_vol_serv.keys(), 2)
for vvid in vids:
s = ServerProxy(self.act_vol_serv[vvid])
s.assign_volumn(vid, size)
self.db.set(vid, vids, sync=True)
self.update_writable_volumn(False)
return vid
def assign_fid(self):
if not self.writable_vid:
return ''
vid = random.choice(list(self.writable_vid))
fkey = self.fkey.inc(sync=True)
fid = '%d,%d' % (vid, fkey)
return fid
def find_volumn(self, vid):
vids = self.db[vid]
addrs = []
for vid in vids:
if vid in self.act_vol_serv:
addrs.append(self.act_vol_serv[vid])
return addrs
def find_writable_volumn(self, vid):
if vid in self.writable_vid:
return self.find_volumn(vid)
else:
return []
def volumn_status(self):
res = dict()
vol_status = dict()
for vol_serv_id, vol_serv in self.act_vol_serv.items():
try:
s = ServerProxy(vol_serv)
vv = s.status()
vol_status[vol_serv_id] = vv
except:
pass
for vid, vvids in self.db.items():
sdoc = dict()
ava_nodes = list(set(vol_status.keys()) & set(vvids))
sdoc['tat_node_num'] = len(vvids)
sdoc['ava_node_num'] = len(ava_nodes)
if ava_nodes:
vol_sdoc = vol_status[ava_nodes[0]]
vdoc = vol_sdoc['vdb'][str(vid)]
sdoc['total_size'] = vdoc['size']
sdoc['used_size'] = vdoc['counter']
sdoc['free_size'] = sdoc['total_size'] - sdoc['used_size']
else:
sdoc['total_size'] = 0
sdoc['used_size'] = 0
sdoc['free_size'] = 0
res[str(vid)] = sdoc
return res
def node_status(self):
res = dict()
for vol_serv_id, vol_serv in self.act_vol_serv.items():
try:
s = ServerProxy(vol_serv)
vv = s.status()
vol_status = dict()
vol_status['addr'] = vol_serv
vol_status['total'] = vv['total']
vol_status['used'] = vv['used']
vol_status['free'] = vv['free']
vol_status['nodes'] = list(vv['vdb'].keys())
for node in vol_status['nodes']:
vids = self.db.get(int(node), [])
if vol_serv_id not in vids:
vol_status['nodes'].remove(node)
res[vol_serv_id] = vol_status
except:
self.logger.exception('Got an exception')
return res
def start(self):
self.logger.info('Start serving at %s:%d' % (self.host, self.port))
self.serv.serve_forever()