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|
import asyncio
import time
import logging
from .defaults import DEFAULT_CLIENT_PORT
from .protocol import _SiriDBProtocol
from .protomap import CPROTO_REQ_QUERY
from .protomap import CPROTO_REQ_INSERT
from .protomap import CPROTO_REQ_REGISTER_SERVER
from .protomap import CPROTO_REQ_PING
from .protomap import FILE_MAP
class SiriDBConnection():
def __init__(self,
username,
password,
dbname,
host='127.0.0.1',
port=DEFAULT_CLIENT_PORT,
loop=None,
timeout=10,
protocol=_SiriDBProtocol):
self._loop = loop or asyncio.get_event_loop()
client = self._loop.create_connection(
lambda: protocol(username, password, dbname),
host=host,
port=port)
self._transport, self._protocol = self._loop.run_until_complete(
asyncio.wait_for(client, timeout=timeout))
self._loop.run_until_complete(self._wait_for_auth())
async def _wait_for_auth(self):
try:
res = await self._protocol.auth_future
except Exception as exc:
logging.debug('Authentication failed: {}'.format(exc))
self._transport.close()
raise exc
else:
self._protocol.on_authenticated()
def close(self):
if hasattr(self, '_protocol') and hasattr(self._protocol, 'transport'):
self._protocol.transport.close()
def query(self, query, time_precision=None, timeout=30):
result = self._loop.run_until_complete(
self._protocol.send_package(CPROTO_REQ_QUERY,
data=(query, time_precision),
timeout=timeout))
return result
def insert(self, data, timeout=600):
result = self._loop.run_until_complete(
self._protocol.send_package(CPROTO_REQ_INSERT,
data=data,
timeout=timeout))
return result
def _register_server(self, server, timeout=30):
'''Register a new SiriDB Server.
This method is used by the SiriDB manage tool and should not be used
otherwise. Full access rights are required for this request.
'''
result = self._loop.run_until_complete(
self._protocol.send_package(CPROTO_REQ_REGISTER_SERVER,
data=server,
timeout=timeout))
return result
def _get_file(self, fn, timeout=30):
'''Request a SiriDB configuration file.
This method is used by the SiriDB manage tool and should not be used
otherwise. Full access rights are required for this request.
'''
msg = FILE_MAP.get(fn, None)
if msg is None:
raise FileNotFoundError('Cannot get file {!r}. Available file '
'requests are: {}'
.format(fn, ', '.join(FILE_MAP.keys())))
result = self._loop.run_until_complete(
self._protocol.send_package(msg, timeout=timeout))
return result
class SiriDBAsyncConnection():
_protocol = None
_keepalive = None
async def keepalive_loop(self, interval=45):
sleep = interval
while True:
await asyncio.sleep(sleep)
if not self.connected:
break
sleep = \
max(0, interval - time.time() + self._last_resp) or interval
if sleep == interval:
logging.debug('Send keep-alive package...')
try:
await self._protocol.send_package(CPROTO_REQ_PING,
timeout=15)
except asyncio.CancelledError:
break
except Exception as e:
logging.error(e)
self.close()
break
async def connect(self,
username,
password,
dbname,
host='127.0.0.1',
port=DEFAULT_CLIENT_PORT,
loop=None,
timeout=10,
keepalive=False,
protocol=_SiriDBProtocol):
loop = loop or asyncio.get_event_loop()
client = loop.create_connection(
lambda: protocol(username, password, dbname),
host=host,
port=port)
self._timeout = timeout
_transport, self._protocol = \
await asyncio.wait_for(client, timeout=timeout)
try:
res = await self._protocol.auth_future
except Exception as exc:
logging.debug('Authentication failed: {}'.format(exc))
_transport.close()
raise exc
else:
self._protocol.on_authenticated()
self._last_resp = time.time()
if keepalive and (self._keepalive is None or self._keepalive.done()):
self._keepalive = asyncio.ensure_future(self.keepalive_loop())
def close(self):
if self._keepalive is not None:
self._keepalive.cancel()
del self._keepalive
if self._protocol is not None:
self._protocol.transport.close()
del self._protocol
async def query(self, query, time_precision=None, timeout=3600):
result = await self._protocol.send_package(
CPROTO_REQ_QUERY,
data=(query, time_precision),
timeout=timeout)
self._last_resp = time.time()
return result
async def insert(self, data, timeout=3600):
result = await self._protocol.send_package(
CPROTO_REQ_INSERT,
data=data,
timeout=timeout)
self._last_resp = time.time()
return result
@property
def connected(self):
return self._protocol is not None and self._protocol._connected
|
