mirror of
https://github.com/xcat2/confluent.git
synced 2026-08-04 08:27:01 +00:00
Jarrod Johnson
78 lines
2.9 KiB
Python
78 lines
2.9 KiB
Python
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import asyncio
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import confluent.messages as msg
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import confluent.exceptions as exc
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import struct
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import socket
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import os
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mountsbyuser = {}
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_browserfsd = None
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async def assure_browserfs():
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global _browserfsd
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if _browserfsd is None:
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os.makedirs('/var/run/confluent/browserfs/mount', exist_ok=True)
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_browserfsd = await asyncio.subprocess.create_subprocess_exec(
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'/opt/confluent/bin/browserfs',
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'-c', '/var/run/confluent/browserfs/control',
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'-s', '127.0.0.1:4006',
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# browserfs supports unix domain websocket, however apache reverse proxy is dicey that way in some versions
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'-w', '/var/run/confluent/browserfs/mount')
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while not os.path.exists('/var/run/confluent/browserfs/control'):
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await asyncio.sleep(0.5)
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async def handle_request(configmanager, inputdata, pathcomponents, operation):
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curruser = configmanager.current_user
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if len(pathcomponents) == 0:
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mounts = mountsbyuser.get(curruser, [])
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if operation == 'retrieve':
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for mount in mounts:
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yield msg.ChildCollection(mount['index'])
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elif operation == 'create':
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if 'name' not in inputdata:
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raise exc.InvalidArgumentException('Required parameter "name" is missing')
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usedidx = set([])
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for mount in mounts:
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usedidx.add(mount['index'])
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curridx = 1
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while curridx in usedidx:
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curridx += 1
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currmount = await requestmount(curruser, inputdata['name'])
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currmount['index'] = curridx
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if curruser not in mountsbyuser:
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mountsbyuser[curruser] = []
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mountsbyuser[curruser].append(currmount)
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yield msg.KeyValueData({
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'path': currmount['path'],
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'fullpath': '/var/run/confluent/browserfs/mount/{}'.format(currmount['path']),
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'authtoken': currmount['authtoken']
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})
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async def requestmount(subdir, filename):
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await assure_browserfs()
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cloop = asyncio.get_running_loop()
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a = socket.socket(socket.AF_UNIX)
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a.settimeout(0)
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await cloop.sock_connect(a, '/var/run/confluent/browserfs/control')
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subname = subdir.encode()
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fname = filename.encode()
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await cloop.sock_sendall(a, struct.pack('!II', 1, len(subname)) + subname + struct.pack('!I', len(fname)) + fname)
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rsp = await cloop.sock_recv(a, 4)
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retcode = struct.unpack('!I', rsp)[0]
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if retcode != 0:
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raise Exception("Bad return code")
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rsp = await cloop.sock_recv(a, 4)
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nlen = struct.unpack('!I', rsp)[0]
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idstr = (await cloop.sock_recv(a, nlen)).decode('utf8')
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rsp = await cloop.sock_recv(a, 4)
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nlen = struct.unpack('!I', rsp)[0]
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authtok = (await cloop.sock_recv(a, nlen)).decode('utf8')
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thismount = {
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'id': idstr,
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'path': '{}/{}/{}'.format(idstr, subdir, filename),
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'authtoken': authtok
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}
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return thismount
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