def formatnotification(self, method, params, connection):
msg = {'method': method, 'params': params, 'id': None}
c = ConnectionWriteEvent(connection=connection,
connmark=connection.connmark,
data=json.dumps(msg).encode(self.encoding))
if self.debugging:
self._logger.debug('message formatted: %r', msg)
return c
async def sendrequest(self, connection, request, container):
connection.xid += 1
xid = connection.xid
request.xid = xid
await connection.write(
ConnectionWriteEvent(connection,
connection.connmark,
data=request._tobytes()))
return xid
def reply_to(self, connection, reply, request, container):
xid = request.xid
reply.xid = xid
for m in connection.write(
ConnectionWriteEvent(connection,
connection.connmark,
data=reply._tobytes())):
yield m
container.retvalue = xid
def parse(self, connection, data, laststart):
events = []
start = 0
while True:
result = ZooKeeperReply.parse(data[start:])
if result is None:
break
reply, size = result
start += size
if not connection.zookeeper_handshake:
reply.zookeeper_type = CONNECT_PACKET
reply._autosubclass()
connection.zookeeper_handshake = True
events.append(
ZooKeeperHandshakeEvent(connection,
connection.connmark,
self,
message=reply))
else:
reply.zookeeper_type = HEADER_PACKET
reply._autosubclass()
if reply.zxid > 0:
connection.zookeeper_lastzxid = reply.zxid
if reply.xid >= 0:
xid = reply.xid
if xid not in connection.zookeeper_requests:
raise ZooKeeperProtocolException(
'xid does not match: receive %r' % (reply.xid, ))
request_type = connection.zookeeper_requests.pop(xid)
reply.zookeeper_request_type = request_type
reply._autosubclass()
if reply.xid == WATCHER_EVENT_XID:
events.append(
ZooKeeperWatcherEvent(
connection,
connection.connmark,
self,
reply.type,
reply.state,
b'' if reply.path is None else reply.path,
message=reply))
else:
events.append(
ZooKeeperResponseEvent(connection,
connection.connmark,
self,
reply.xid,
message=reply))
if laststart == len(data):
# Remote write close
events.append(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True))
return (events, len(data) - start)
def sendrequest(self, connection, request, container):
connection.xid += 1
xid = connection.xid
request.xid = xid
for m in connection.write(
ConnectionWriteEvent(connection,
connection.connmark,
data=request._tobytes())):
yield m
container.retvalue = xid
def _raw_writer(self, connection):
try:
while True:
for m in connection.outputstream.prepareRead(connection):
yield m
try:
data = connection.outputstream.readonce()
except EOFError:
for m in connection.write(ConnectionWriteEvent(connection, connection.connmark, data=b'', EOF=True)):
yield m
break
except IOError:
for m in connection.reset():
yield m
break
else:
for m in connection.write(ConnectionWriteEvent(connection, connection.connmark, data=data, EOF=False)):
yield m
finally:
connection.outputstream.close(connection.scheduler)
def parse(self, connection, data, laststart):
events = []
currstart = 0
while True:
r = d.message.parse(data[currstart:])
if not r:
break
msg, size = r
if msg.type == d.ECHO_REQUEST and msg.version == d.MESSAGE_VERSION_10:
# Direct reply
msg.type = d.ECHO_REPLY
events.append(
ConnectionWriteEvent(connection,
connection.connmark,
data=msg._tobytes()))
elif msg.type & 1:
events.append(
MyProtocolRequestEvent(msg.type,
msg.version,
connection,
connection.connmark,
self,
message=msg))
else:
events.append(
MyProtocolReplyEvent(msg.xid,
connection,
connection.connmark,
self,
msg.type,
msg.type == d.ERROR,
message=msg))
currstart += size
if laststart == len(data):
# Remote write close
events.append(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True))
return (events, len(data) - currstart)
def _send_command(self, connection, container, *args):
if not args:
raise RedisProtocolException('No command name')
l = Lock(connection.redis_locker, connection.scheduler)
# The socket write sequence must be the same as the send sequence, add a lock to ensure that
for m in l.lock(container):
yield m
with l:
r, reply_matcher = self._prepare_command(connection, args)
for m in connection.write(ConnectionWriteEvent(connection, connection.connmark, data = r), False):
yield m
container.retvalue = reply_matcher
async def _clientroutine(self, connection):
# Send Data Until Connection closed
try:
data = b'\x00' * self.buffersize
while True:
we = ConnectionWriteEvent(connection,
connection.connmark,
data=data)
await connection.write(we, False)
except Exception:
await connection.shutdown(True)
raise
def _clientroutine(self, connection):
# Send Data Until Connection closed
try:
data = b'\x00' * self.buffersize
while True:
we = ConnectionWriteEvent(connection,
connection.connmark,
data=data)
for m in connection.write(we, False):
yield m
except:
for m in connection.shutdown(True):
yield m
def formatrequest(self, method, params, connection):
msgid = connection.xid
msg = {'method': method, 'params': params, 'id': msgid}
connection.xid += 1
if connection.xid > 0x7fffffff:
# Skip xid = 0 for special response
connection.xid = 1
c = ConnectionWriteEvent(connection=connection,
connmark=connection.connmark,
data=json.dumps(msg).encode(self.encoding))
if self.debugging:
self._logger.debug('message formatted: %r', msg)
return (c, msgid)
async def init(self, connection):
await Protocol.init(self, connection)
if not self.server:
connection.subroutine(
connection.executeWithTimeout(self.totalsend + 1.0,
self._clientroutine(connection)),
False, 'protocolroutine')
else:
await connection.write(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True))
await connection.wait_for_send(
TestConnectionEvent(TestConnectionEvent.UP, connection))
async def send_command(self, connection, container, *args):
'''
Send command to Redis server.
:param connection: Redis connection
:param container: routine container
:param \*args: command paramters, begin with command name, e.g. `'SET'`,`'key'`,`'value'`
:returns: Event matcher to wait for reply
'''
if not args:
raise RedisProtocolException('No command name')
r, reply_matcher = self._prepare_command(connection, args)
await connection.write(ConnectionWriteEvent(connection, connection.connmark, data = r), False)
return reply_matcher()
def init(self, connection):
for m in Protocol.init(self, connection):
yield m
if not self.server:
connection.subroutine(
connection.executeWithTimeout(self.totalsend + 1.0,
self._clientroutine(connection)),
False, 'protocolroutine')
else:
for m in connection.write(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True)):
yield m
for m in connection.waitForSend(
TestConnectionEvent(TestConnectionEvent.UP, connection)):
yield m
def send_command(self, connection, container, *args):
'''
Send command to Redis server.
:param connection: Redis connection
:param container: routine container
:param *args: command paramters, begin with command name, e.g. 'SET','key','value'
:returns: Event matcher to wait for reply. The value is returned from container.retvalue
'''
if not args:
raise RedisProtocolException('No command name')
l = Lock(connection.redis_locker, connection.scheduler)
# The socket write sequence must be the same as the send sequence, add a lock to ensure that
for m in l.lock(container):
yield m
with l:
r, reply_matcher = self._prepare_command(connection, args)
for m in connection.write(ConnectionWriteEvent(connection, connection.connmark, data = r), False):
yield m
container.retvalue = reply_matcher
def _send_batch(self, connection, container, *cmds):
"Use delegate to ensure it always ends"
if not cmds:
raise RedisProtocolException('No commands')
l = Lock(connection.redis_locker, connection.scheduler)
for m in l.lock(container):
yield m
with l:
commands = []
matchers = []
for c in cmds:
try:
r, reply_matcher = self._prepare_command(connection, c)
commands.append(r)
matchers.append(reply_matcher)
except Exception:
self._logger.warning('Error in one of the commands in a batch: %r. The command is ignored.', c, exc_info = True)
if not commands:
raise RedisProtocolException('Error for every command in a batch')
for m in connection.write(ConnectionWriteEvent(connection, connection.connmark, data = b''.join(commands)), False):
yield m
container.retvalue = matchers
async def send_batch(self, connection, container, *cmds):
'''
Send multiple commands to redis server at once
:param connection: redis connection
:param container: routine container
:param \*cmds: commands to send. Each command is a tuple/list of bytes/str.
:returns: list of reply event matchers
'''
if not cmds:
raise RedisProtocolException('No commands')
commands = []
matchers = []
for c in cmds:
r, reply_matcher = self._prepare_command(connection, c)
commands.append(r)
matchers.append(reply_matcher)
await connection.write(ConnectionWriteEvent(connection, connection.connmark, data = b''.join(commands)), False)
return [m() for m in matchers]
def reconnect_init(self, connection):
connection.xid = 1
connection.redis_replyxid = 1
connection.redis_ping = -1
connection.redis_pingreply = -1
connection.redis_bufferedxid = 0
connection.redis_sendbuffer = []
connection.redis_sender = False
connection.redis_locker = object()
write_buffer = []
if self.usehiredis:
connection.redis_reader = hiredis.Reader(
protocolError=RedisProtocolException,
replyError=RedisReplyException)
else:
connection.redis_reader = RedisParser()
if connection.redis_select:
write_buffer.append(
self.format_request(b'SELECT', connection.redis_select))
connection.xid += 1
if connection.redis_subscribe:
if connection.redis_subscribe_keys:
write_buffer.append(
self.format_request(
b'SUBSCRIBE', *tuple(connection.redis_subscribe_keys)))
if connection.redis_subscribe_pkeys:
write_buffer.append(
self.format_request(
b'PSUBSCRIBE',
*tuple(connection.redis_subscribe_pkeys)))
connection.scheduler.emergesend(
ConnectionWriteEvent(connection,
connection.connmark,
data=b''.join(write_buffer)))
for m in connection.waitForSend(
RedisConnectionStateEvent(
RedisConnectionStateEvent.CONNECTION_UP, connection,
connection.connmark, self)):
yield m
def parse(self, connection, data, laststart):
events = []
connection.redis_reader.feed(_copy(data))
while True:
r = connection.redis_reader.gets()
if r is False:
break
if connection.redis_replyxid < connection.xid:
events.append(
RedisResponseEvent(connection,
connection.connmark,
connection.redis_replyxid,
isinstance(r, Exception),
self,
result=r))
connection.redis_replyxid += 1
elif connection.redis_subscribe:
if isinstance(r, bytes) or isinstance(r, Exception):
events.append(
RedisResponseEvent(connection,
connection.connmark,
0,
isinstance(r, Exception),
self,
result=r))
elif r[0] == b'message':
events.append(
RedisSubscribeMessageEvent(
RedisSubscribeMessageEvent.MESSAGE,
r[1],
r[1],
connection,
connection.connmark,
self,
message=r[2]))
elif r[0] == b'pmessage':
events.append(
RedisSubscribeMessageEvent(
RedisSubscribeMessageEvent.PMESSAGE,
r[1],
r[2],
connection,
connection.connmark,
self,
message=r[3]))
elif r[0] == b'pong':
events.append(
RedisResponseEvent(connection,
connection.connmark,
connection.redis_pingreply,
False,
self,
result=r[1]))
connection.redis_pingreply -= 1
else:
events.append(
RedisSubscribeEvent(_str(r[0]),
r[1],
connection,
connection.connmark,
self,
result=r))
if not r[2]:
connection.redis_subscribe = False
connection.xid += connection.redis_bufferedxid
if laststart == len(data):
# Remote write close
events.append(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True))
return (events, 0)
def parse(self, connection, data, laststart):
jsonstart = 0
start = laststart
end = len(data)
events = []
level = connection.jsonrpc_parserlevel
state = connection.jsonrpc_parserstate
_OBJECT_START = b'{'[0]
_STRING_MARK = b'"'[0]
_ESCAPE_MARK = b'\\'[0]
_OBJECT_END = b'}'[0]
while start < end:
# We only match {} to find the end position
if state == 'begin':
m = self._BEGIN_PATTERN.match(data, start)
start = m.end()
if start < end:
if data[start] == _OBJECT_START:
start += 1
level += 1
state = 'object'
else:
raise JsonFormatException('"{" is not found')
elif state == 'object':
m = self._OBJECT_PATTERN.match(data, start)
start = m.end()
if start < end:
if data[start] == _STRING_MARK:
start += 1
state = 'string'
elif data[start] == _OBJECT_START:
start += 1
level += 1
elif data[start] == _OBJECT_END:
start += 1
level -= 1
if level <= 0:
state = 'begin'
jsondata = data[jsonstart:start]
if hasattr(jsondata, 'tobytes'):
jsondata = jsondata.tobytes()
jsondata = jsondata.decode(self.encoding)
if self.debugging:
self._logger.debug('Parsing json text:\n%s',
jsondata)
jsondata = json.loads(jsondata)
if 'method' in jsondata:
if jsondata['method'] is None:
raise JsonFormatException(
'method is None in input json')
if jsondata['id'] is not None:
# Unprocessed requests will block the JSON-RPC connection message queue,
# as a security consideration, the parser can automatically reject unknown
# requests
if self.allowedrequests is not None and str(
jsondata['method']
) not in self.allowedrequests:
events.append(
self.formaterror(
'method is not supported',
jsondata['id'], connection))
else:
events.append(
JsonRPCRequestEvent(
method=str(jsondata['method']),
params=jsondata['params'],
id=jsondata['id'],
connection=connection,
connmark=connection.connmark,
createby=self))
self._logger.debug(
'Request received(method = %r, id = %r, connection = %r)',
jsondata['method'], jsondata['id'],
connection)
else:
events.append(
JsonRPCNotificationEvent(
method=str(jsondata['method']),
params=jsondata['params'],
connection=connection,
connmark=connection.connmark,
createby=self))
self._logger.debug(
'Notification received(method = %r, connection = %r)',
str(jsondata['method']), connection)
elif 'result' in jsondata:
if jsondata['id'] is None:
raise JsonFormatException(
'id is None for a response')
events.append(
JsonRPCResponseEvent(
connection=connection,
connmark=connection.connmark,
id=jsondata['id'],
iserror=jsondata['error'] is not None,
result=jsondata['result'],
error=jsondata['error'],
createby=self))
self._logger.debug(
'Response received(id = %r, connection = %r)',
jsondata['id'], connection)
jsonstart = start
else:
# Never really reach
raise JsonFormatException('How can this be reached...')
elif state == 'string':
m = self._STRING_PATTERN.match(data, start)
start = m.end()
if start < end:
if data[start] == _STRING_MARK:
start += 1
state = 'object'
elif data[start] == _ESCAPE_MARK:
start += 1
state = 'escape'
else:
# Never really reach
raise JsonFormatException('How can this be reached...')
else:
# Escape
start += 1
state = 'string'
# Security check
if start - jsonstart > self.messagelimit:
raise JsonFormatException('JSON message size exceeds limit')
if level > self.levellimit:
raise JsonFormatException('JSON message level exceeds limit')
connection.jsonrpc_parserlevel = level
connection.jsonrpc_parserstate = state
if laststart == len(data):
# Remote write close
events.append(
ConnectionWriteEvent(connection,
connection.connmark,
data=b'',
EOF=True))
return (events, len(data) - jsonstart)