def end(self, handle_invalidations=None):
write(self.s, 'C')
n = read_int4(self.s)
oid_list = []
if n != 0:
packed_oids = read(self.s, n * 8)
oid_list = split_oids(packed_oids)
try:
handle_invalidations(oid_list)
except ConflictError:
self.transaction_new_oids.reverse()
self.oid_pool.extend(self.transaction_new_oids)
assert len(self.oid_pool) == len(set(self.oid_pool))
self.begin() # clear out records and transaction_new_oids.
write_int4(self.s, 0) # Tell server we are done.
raise
tdata = []
for oid, record in iteritems(self.records):
tdata.append(int4_to_str(8 + len(record)))
tdata.append(as_bytes(oid))
tdata.append(record)
tdata = join_bytes(tdata)
write_int4_str(self.s, tdata)
self.records.clear()
if len(tdata) > 0:
status = read(self.s, 1)
if status == STATUS_OKAY:
pass
elif status == STATUS_INVALID:
raise WriteConflictError()
else:
raise ProtocolError('server returned invalid status %r' %
status)
def end(self, handle_invalidations=None):
write(self.s, 'C')
n = read_int4(self.s)
oid_list = []
if n != 0:
packed_oids = read(self.s, n*8)
oid_list = split_oids(packed_oids)
try:
handle_invalidations(oid_list)
except ConflictError:
self.transaction_new_oids.reverse()
self.oid_pool.extend(self.transaction_new_oids)
assert len(self.oid_pool) == len(set(self.oid_pool))
self.begin() # clear out records and transaction_new_oids.
write_int4(self.s, 0) # Tell server we are done.
raise
tdata = []
for oid, record in iteritems(self.records):
tdata.append(int4_to_str(8 + len(record)))
tdata.append(as_bytes(oid))
tdata.append(record)
tdata = join_bytes(tdata)
write_int4_str(self.s, tdata)
self.records.clear()
if len(tdata) > 0:
status = read(self.s, 1)
if status == STATUS_OKAY:
pass
elif status == STATUS_INVALID:
raise WriteConflictError()
else:
raise ProtocolError('server returned invalid status %r' % status)
def handle_new_oids(self, client, db_name):
# M
log(20, 'New OIDs %s' % db_name)
storage = self.storages[db_name]
count = ord((yield client.read(1)))
log(10, 'oids: %s', count)
yield client.write(
join_bytes(self._new_oids(client, db_name, storage, count)))
def bulk_load(self, oids):
oid_str = join_bytes(oids)
num_oids, remainder = divmod(len(oid_str), 8)
assert remainder == 0, remainder
write_all(self.s, 'B', int4_to_str(num_oids), oid_str)
records = [self._get_load_response(oid) for oid in oids]
for record in records:
yield record
def bulk_load(self, oids):
oid_str = join_bytes(oids)
num_oids, remainder = divmod(len(oid_str), 8)
assert remainder == 0, remainder
write_all(self.s, 'B', int4_to_str(num_oids), oid_str)
records = [self._get_load_response(oid) for oid in oids]
for record in records:
yield record
def handle_S(self, s):
# sync
client = self._find_client(s)
self._report_load_record()
self._sync_storage()
log(8, 'Sync %s', len(client.invalid))
write_all(s,
int4_to_str(len(client.invalid)), join_bytes(client.invalid))
client.invalid.clear()
def handle_S(self, s):
# sync
client = self._find_client(s)
self._report_load_record()
self._sync_storage()
log(8, 'Sync %s', len(client.invalid))
write_all(s, int4_to_str(len(client.invalid)),
join_bytes(client.invalid))
client.invalid.clear()
def handle_commit(self, client, db_name):
# C
log(20, 'Commit %s' % db_name)
storage = self.storages[db_name]
self._sync_storage(db_name, storage)
invalid = client.invalid[db_name]
yield client.write(int4_to_str(len(invalid)))
yield client.write(join_bytes(invalid))
yield client.flush()
invalid.clear()
tdata_len = str_to_int4((yield client.read(4)))
if tdata_len == 0:
# Client decided not to commit (e.g. conflict)
return
tdata = yield client.read(tdata_len)
logging_debug = is_logging(10)
logging_debug and log(10, 'Committing %s bytes', tdata_len)
storage.begin()
i = 0
oids = []
while i < tdata_len:
rlen = str_to_int4(tdata[i:i+4])
i += 4
oid = tdata[i:i+8]
record = tdata[i+8:i+rlen]
i += rlen
if logging_debug:
class_name = extract_class_name(record)
log(10, ' oid=%-6s rlen=%-6s %s',
str_to_int8(oid), rlen, class_name)
storage.store(oid, record)
oids.append(oid)
assert i == tdata_len
oid_set = set(oids)
for c in self.clients:
if c is not client:
if oid_set.intersection(c.unused_oids[db_name]):
raise ClientError('invalid oid: %r' % oid)
try:
handle_invalidations = (
lambda oids: self._handle_invalidations(db_name, oids))
storage.end(handle_invalidations=handle_invalidations)
except ConflictError:
log(20, 'Conflict during commit')
yield client.write(STATUS_INVALID)
else:
self._report_load_record(storage)
log(20, 'Committed %3s objects %s bytes at %s',
len(oids), tdata_len, datetime.now())
yield client.write(STATUS_OKAY)
client.unused_oids[db_name] -= oid_set
for c in self.clients:
if c is not client:
c.invalid[db_name].update(oids)
storage.d_bytes_since_pack += tdata_len + 8
def handle_sync(self, client, db_name):
# S
log(20, 'Sync %s' % db_name)
storage = self.storages[db_name]
self._report_load_record(storage)
self._sync_storage(db_name, storage)
invalid = client.invalid[db_name]
log(8, 'Sync %s', len(invalid))
yield client.write(int4_to_str(len(invalid)))
yield client.write(join_bytes(invalid))
invalid.clear()
def check_record_pack_unpack(self):
oid = as_bytes('0'*8)
data = as_bytes('sample')
reflist = ['1'*8, '2'*8]
reflist = list(map(as_bytes, reflist))
refs = join_bytes(reflist)
result=unpack_record(pack_record(oid, data, refs))
assert result[0] == oid
assert result[1] == data
assert split_oids(result[2]) == reflist
assert split_oids('') == []
def handle_C(self, s):
# commit
self._sync_storage()
client = self._find_client(s)
write_all(s, int4_to_str(len(client.invalid)),
join_bytes(client.invalid))
client.invalid.clear()
tdata = read_int4_str(s)
if len(tdata) == 0:
return # client decided not to commit (e.g. conflict)
logging_debug = is_logging(10)
logging_debug and log(10, 'Committing %s bytes', len(tdata))
self.storage.begin()
i = 0
oids = []
while i < len(tdata):
rlen = str_to_int4(tdata[i:i + 4])
i += 4
oid = tdata[i:i + 8]
record = tdata[i + 8:i + rlen]
i += rlen
if logging_debug:
class_name = extract_class_name(record)
log(10, ' oid=%-6s rlen=%-6s %s', str_to_int8(oid), rlen,
class_name)
self.storage.store(oid, record)
oids.append(oid)
assert i == len(tdata)
oid_set = set(oids)
for other_client in self.clients:
if other_client is not client:
if oid_set.intersection(other_client.unused_oids):
raise ClientError("invalid oid: %r" % oid)
try:
self.storage.end(handle_invalidations=self._handle_invalidations)
except ConflictError:
log(20, 'Conflict during commit')
write(s, STATUS_INVALID)
else:
self._report_load_record()
log(20, 'Committed %3s objects %s bytes at %s', len(oids),
len(tdata), datetime.now())
write(s, STATUS_OKAY)
client.unused_oids -= oid_set
for c in self.clients:
if c is not client:
c.invalid.update(oids)
self.bytes_since_pack += len(tdata) + 8
def handle_C(self, s):
# commit
self._sync_storage()
client = self._find_client(s)
write_all(s,
int4_to_str(len(client.invalid)), join_bytes(client.invalid))
client.invalid.clear()
tdata = read_int4_str(s)
if len(tdata) == 0:
return # client decided not to commit (e.g. conflict)
logging_debug = is_logging(10)
logging_debug and log(10, 'Committing %s bytes', len(tdata))
self.storage.begin()
i = 0
oids = []
while i < len(tdata):
rlen = str_to_int4(tdata[i:i+4])
i += 4
oid = tdata[i:i+8]
record = tdata[i+8:i+rlen]
i += rlen
if logging_debug:
class_name = extract_class_name(record)
log(10, ' oid=%-6s rlen=%-6s %s',
str_to_int8(oid), rlen, class_name)
self.storage.store(oid, record)
oids.append(oid)
assert i == len(tdata)
oid_set = set(oids)
for other_client in self.clients:
if other_client is not client:
if oid_set.intersection(other_client.unused_oids):
raise ClientError("invalid oid: %r" % oid)
try:
self.storage.end(handle_invalidations=self._handle_invalidations)
except ConflictError:
log(20, 'Conflict during commit')
write(s, STATUS_INVALID)
else:
self._report_load_record()
log(20, 'Committed %3s objects %s bytes at %s',
len(oids), len(tdata), datetime.now())
write(s, STATUS_OKAY)
client.unused_oids -= oid_set
for c in self.clients:
if c is not client:
c.invalid.update(oids)
self.bytes_since_pack += len(tdata) + 8
def get_state(self, obj):
self.sio.seek(0) # recycle BytesIO instance
self.sio.truncate()
self.pickler.clear_memo()
self.pickler.dump(type(obj))
self.refs.clear()
position = self.sio.tell()
self.pickler.dump(obj.__getstate__())
uncompressed = self.sio.getvalue()
pickled_type = uncompressed[:position]
pickled_state = uncompressed[position:]
if WRITE_COMPRESSED_STATE_PICKLES:
state = compress(pickled_state)
else:
state = pickled_state
data = pickled_type + state
self.refs.discard(obj._p_oid)
return data, join_bytes(self.refs)
def get_state(self, obj):
self.sio.seek(0) # recycle BytesIO instance
self.sio.truncate()
self.pickler.clear_memo()
self.pickler.dump(type(obj))
self.refs.clear()
position = self.sio.tell()
self.pickler.dump(obj.__getstate__())
uncompressed = self.sio.getvalue()
pickled_type = uncompressed[:position]
pickled_state = uncompressed[position:]
if WRITE_COMPRESSED_STATE_PICKLES:
state = compress(pickled_state)
else:
state = pickled_state
data = pickled_type + state
self.refs.discard(obj._p_oid)
return data, join_bytes(self.refs)
def pack_record(oid, data, refs):
"""(oid:str, data:str, refs:str) -> record:str
"""
return join_bytes([oid, int4_to_str(len(data)), data, refs])
def handle_M(self, s):
# new OIDs
count = ord(read(s, 1))
log(10, "oids: %s", count)
write(s, join_bytes(self._new_oids(s, count)))
def __init__(self, *args):
self.io = BytesIO(join_bytes(as_bytes(a) for a in args))
def pack_record(oid, data, refs):
"""(oid:str, data:str, refs:str) -> record:str
"""
return join_bytes([oid, int4_to_str(len(data)), data, refs])
def handle_M(self, s):
# new OIDs
count = ord(read(s, 1))
log(10, "oids: %s", count)
write(s, join_bytes(self._new_oids(s, count)))
