class MutableDict(object):
def __init__(self, partition_num, cacheLimit=None):
self.uuid = str(uuid_pkg.uuid4())
self.partitioner = HashPartitioner(partition_num)
self.data = LRUDict(cacheLimit)
self.cacheLimit = cacheLimit
self.updated = {}
self.generation = 1
self.register(self)
self.is_local = True
def __getstate__(self):
return self.uuid, self.partitioner, self.generation, self.cacheLimit
def __setstate__(self, v):
self.uuid, self.partitioner, self.generation, self.cacheLimit = v
self.data = LRUDict(self.cacheLimit)
self.updated = {}
self.is_local = False
self.register(self)
def get(self, key):
values = self.updated.get(key)
if values is not None:
return values[0]
_key = self._get_key(key)
values = self.data.get((_key, key))
if values is None:
for k, v in six.iteritems(self._fetch_missing(_key)):
self.data.put((_key, k), v)
if k == key:
values = v
return values[0] if values is not None else None
def put(self, key, value):
if isinstance(value, ConflictValues):
raise TypeError('Cannot put ConflictValues into mutable_dict')
self.updated[key] = (value, self.generation)
def _flush(self):
if not self.updated:
return
updated_keys = {}
dirname = "mutable_dict"
tmppath = env.workdir.alloc_tmp_dir(dirname)
path = env.workdir.export(tmppath, dirname)
uri = env.get('SERVER_URI')
server_uri = '%s/%s' % (uri, os.path.basename(path))
for k, v in self.updated.items():
key = self._get_key(k)
if key in updated_keys:
updated_keys[key][k] = v
else:
updated_keys[key] = {k: v}
uid = uuid_pkg.uuid4().get_hex()
for key, updated in updated_keys.items():
new = self._fetch_missing(key)
for k, v in updated.items():
if v is None:
new.pop(k)
else:
new[k] = v
filename = '%s_%s_%s' % (key, self.generation, uid)
fn = os.path.join(path, filename)
if os.path.exists(fn):
raise RuntimeError('conflict uuid for mutable_dict')
url = '%s/%s' % (server_uri, filename)
with atomic_file(fn) as f:
data = compress(cPickle.dumps(new))
f.write(struct.pack('<I', len(data) + 4) + data)
env.trackerClient.call(
AddItemMessage('mutable_dict_new:%s' % key, url))
files = glob.glob(os.path.join(path, '%s-*' % self.uuid))
for f in files:
if int(f.split('_')[-2]) < self.generation - 1:
try:
os.remove(f)
except OSError:
pass
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
def _merge(self):
locs = env.trackerServer.locs
new = []
for k in locs:
if k.startswith('mutable_dict_new:%s-' % self.uuid):
new.append(k)
if not new:
return
self.generation += 1
length = len('mutable_dict_new:')
for k in new:
locs['mutable_dict:%s' % k[length:]] = locs.pop(k)
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
@classmethod
def _fetch_missing(cls, key):
result = {}
urls = env.trackerClient.call(GetValueMessage('mutable_dict:%s' % key))
for url in urls:
f = urllib.request.urlopen(url)
if f.code is not None and f.code != 200:
raise IOError('Open %s failed:%s' % (url, f.code))
data = f.read()
if len(data) < 4:
raise IOError('Transfer %s failed: %s received' %
(url, len(data)))
length, = struct.unpack('<I', data[:4])
if length != len(data):
raise IOError('Transfer %s failed: %s received, %s expected' %
(url, len(data), length))
data = cPickle.loads(decompress(data[4:]))
for k, v in data.items():
if k in result:
r = result[k]
if v[1] == r[1]:
r0 = r[0]
v0 = v[0]
merged = r0.value if isinstance(
r0, ConflictValues) else [r0]
merged += v0.value if isinstance(
v0, ConflictValues) else [v0]
result[k] = (ConflictValues(merged), r[1])
else:
result[k] = v if v[1] > r[1] else r
else:
result[k] = v
return result
def _get_key(self, key):
return '%s-%s' % (self.uuid, self.partitioner.getPartition(key))
_all_mutable_dicts = {}
@classmethod
def register(cls, md):
uuid = md.uuid
_md = cls._all_mutable_dicts.get(uuid)
if not _md or _md.generation != md.generation:
cls._all_mutable_dicts[md.uuid] = md
else:
md.data = _md.data
md.updated = _md.updated
@classmethod
def flush(cls):
for md in cls._all_mutable_dicts.values():
md._flush()
@classmethod
def merge(cls):
for md in cls._all_mutable_dicts.values():
md._merge()
class MutableDict(object):
def __init__(self, partition_num, cacheLimit=None):
self.uuid = str(uuid_pkg.uuid4())
self.partitioner = HashPartitioner(partition_num)
self.data = LRUDict(cacheLimit)
self.cacheLimit = cacheLimit
self.updated = {}
self.generation = 1
self.register(self)
self.is_local = True
def __getstate__(self):
return self.uuid, self.partitioner, self.generation, self.cacheLimit
def __setstate__(self, v):
self.uuid, self.partitioner, self.generation, self.cacheLimit = v
self.data = LRUDict(self.cacheLimit)
self.updated = {}
self.is_local = False
self.register(self)
def get(self, key):
values = self.updated.get(key)
if values is not None:
return values[0]
_key = self._get_key(key)
values = self.data.get((_key, key))
if values is None:
for k, v in six.iteritems(self._fetch_missing(_key)):
self.data.put((_key, k), v)
if k == key:
values = v
return values[0] if values is not None else None
def put(self, key, value):
if isinstance(value, ConflictValues):
raise TypeError('Cannot put ConflictValues into mutable_dict')
self.updated[key] = (value, self.generation)
def _flush(self):
if not self.updated:
return
updated_keys = {}
dirname = "mutable_dict"
tmppath = env.workdir.alloc_tmp_dir(dirname)
path = env.workdir.export(tmppath, dirname)
uri = env.get('SERVER_URI')
server_uri = '%s/%s' % (uri, os.path.basename(path))
for k, v in self.updated.items():
key = self._get_key(k)
if key in updated_keys:
updated_keys[key][k] = v
else:
updated_keys[key] = {k: v}
uid = uuid_pkg.uuid4().get_hex()
for key, updated in updated_keys.items():
new = self._fetch_missing(key)
for k, v in updated.items():
if v is None:
new.pop(k)
else:
new[k] = v
filename = '%s_%s_%s' % (key, self.generation, uid)
fn = os.path.join(path, filename)
if os.path.exists(fn):
raise RuntimeError('conflict uuid for mutable_dict')
url = '%s/%s' % (server_uri, filename)
with atomic_file(fn) as f:
data = compress(cPickle.dumps(new))
f.write(struct.pack('<I', len(data) + 4) + data)
env.trackerClient.call(AddItemMessage('mutable_dict_new:%s' % key, url))
files = glob.glob(os.path.join(path, '%s-*' % self.uuid))
for f in files:
if int(f.split('_')[-2]) < self.generation - 1:
try:
os.remove(f)
except OSError:
pass
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
def _merge(self):
locs = env.trackerServer.locs
new = []
for k in locs:
if k.startswith('mutable_dict_new:%s-' % self.uuid):
new.append(k)
if not new:
return
self.generation += 1
length = len('mutable_dict_new:')
for k in new:
locs['mutable_dict:%s' % k[length:]] = locs.pop(k)
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
@classmethod
def _fetch_missing(cls, key):
result = {}
urls = env.trackerClient.call(GetValueMessage('mutable_dict:%s' % key))
for url in urls:
f = urllib.request.urlopen(url)
if f.code is not None and f.code != 200:
raise IOError('Open %s failed:%s' % (url, f.code))
data = f.read()
if len(data) < 4:
raise IOError('Transfer %s failed: %s received' % (url, len(data)))
length, = struct.unpack('<I', data[:4])
if length != len(data):
raise IOError('Transfer %s failed: %s received, %s expected' % (url,
len(data), length))
data = cPickle.loads(decompress(data[4:]))
for k, v in data.items():
if k in result:
r = result[k]
if v[1] == r[1]:
r0 = r[0]
v0 = v[0]
merged = r0.value if isinstance(r0, ConflictValues) else [r0]
merged += v0.value if isinstance(v0, ConflictValues) else [v0]
result[k] = (ConflictValues(merged), r[1])
else:
result[k] = v if v[1] > r[1] else r
else:
result[k] = v
return result
def _get_key(self, key):
return '%s-%s' % (self.uuid,
self.partitioner.getPartition(key))
_all_mutable_dicts = {}
@classmethod
def register(cls, md):
uuid = md.uuid
_md = cls._all_mutable_dicts.get(uuid)
if not _md or _md.generation != md.generation:
cls._all_mutable_dicts[md.uuid] = md
else:
md.data = _md.data
md.updated = _md.updated
@classmethod
def flush(cls):
for md in cls._all_mutable_dicts.values():
md._flush()
@classmethod
def merge(cls):
for md in cls._all_mutable_dicts.values():
md._merge()
class MutableDict(object):
def __init__(self, partition_num , cacheLimit=None):
self.uuid = str(uuid.uuid4())
self.partitioner = HashPartitioner(partition_num)
self.data = LRUDict(cacheLimit)
self.cacheLimit = cacheLimit
self.updated = {}
self.generation = 1
self.register(self)
self.is_local = True
def __getstate__(self):
return (self.uuid, self.partitioner, self.generation, self.cacheLimit)
def __setstate__(self, v):
self.uuid, self.partitioner, self.generation, self.cacheLimit = v
self.data = LRUDict(self.cacheLimit)
self.updated = {}
self.is_local = False
self.register(self)
def get(self, key):
values = self.updated.get(key)
if values is not None:
return values[0]
_key = self._get_key(key)
values = self.data.get((_key, key))
if values is None:
for k, v in self._fetch_missing(_key).iteritems():
self.data.put((_key, k), v)
values = self.data.get((_key, key))
return values[0] if values is not None else None
def put(self, key, value):
if isinstance(value, ConflictValues):
raise TypeError('Cannot put ConflictValues into mutable_dict')
self.updated[key] = (value, self.generation)
def _flush(self):
if not self.updated:
return
updated_keys = {}
path = self._get_path()
uri = env.get('SERVER_URI')
server_uri = '%s/%s' % (uri, os.path.basename(path))
for k,v in self.updated.items():
key = self._get_key(k)
if key in updated_keys:
updated_keys[key][k] = v
else:
updated_keys[key] = {k:v}
uid = uuid.uuid4().get_hex()
for key, updated in updated_keys.items():
new = self._fetch_missing(key)
for k,v in updated.items():
if v is None:
new.pop(k)
else:
new[k] = v
filename = '%s_%s_%s' % (key, self.generation, uid)
fn = os.path.join(path, filename)
if os.path.exists(fn):
raise RuntimeError('conflict uuid for mutable_dict')
url = '%s/%s' % (server_uri, filename)
with atomic_file(fn) as f:
data = compress(cPickle.dumps(new))
f.write(struct.pack('<I', len(data)+4) + data)
env.trackerClient.call(AddItemMessage('mutable_dict_new:%s' % key, url))
files = glob.glob(os.path.join(path, '%s-*' % self.uuid ))
for f in files:
if int(f.split('_')[-2]) < self.generation -1:
try:
os.remove(f)
except OSError:
pass
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
def _merge(self):
locs = env.trackerServer.locs
new = []
for k in locs:
if k.startswith('mutable_dict_new:%s-' % self.uuid):
new.append(k)
if not new:
return
self.generation += 1
length = len('mutable_dict_new:')
for k in new:
locs['mutable_dict:%s' % k[length:]] = locs.pop(k)
self.updated.clear()
self.data = LRUDict(self.cacheLimit)
def _fetch_missing(self, key):
result = {}
urls = env.trackerClient.call(GetValueMessage('mutable_dict:%s' % key))
for url in urls:
f = urllib.urlopen(url)
if f.code is not None and f.code != 200:
raise IOError('Open %s failed:%s' % (url, f.code))
data = f.read()
if len(data) < 4:
raise IOError('Transfer %s failed: %s received' % (url, len(data)))
length, = struct.unpack('<I', data[:4])
if length != len(data):
raise IOError('Transfer %s failed: %s received, %s expected' % (url,
len(data), length))
data = cPickle.loads(decompress(data[4:]))
for k,v in data.items():
if k in result:
r = result[k]
if v[1] == r[1]:
r0 = r[0]
v0 = v[0]
merged = r0.value if isinstance(r0, ConflictValues) else [r0]
merged += v0.value if isinstance(v0, ConflictValues) else [v0]
result[k] = (ConflictValues(merged), r[1])
else:
result[k] = v if v[1] > r[1] else r
else:
result[k] = v
return result
def _get_key(self, key):
return '%s-%s' % (self.uuid,
self.partitioner.getPartition(key))
def _get_path(self):
dirs = env.get('WORKDIR')
if not dirs:
raise RuntimeError('No available workdir')
path = os.path.join(dirs[0], 'mutable_dict')
if os.path.exists(path):
return path
st = os.statvfs(dirs[0])
ratio = st.f_bfree * 1.0 / st.f_blocks
if ratio >= 0.66:
mkdir_p(path)
return path
for d in dirs[1:]:
p = os.path.join(d, 'mutable_dict')
try:
os.makedirs(p)
os.symlink(p, path)
except OSError, e:
pass
return path
raise RuntimeError('Cannot find suitable workdir')