chiark / gitweb /
fcdc665224110a3ae1d27a43e6e4814e9b68852c
[hippotat.git] / client
1 #!/usr/bin/python3
2
3 from hippotat import *
4
5 import twisted.web
6 import twisted.web.client
7
8 import io
9
10 client_cs = None
11
12 def set_client(ci,cs,pw):
13   global client_cs
14   global password
15   assert(client_cs is None)
16   client_cs = cs
17   c.client = ci
18   c.max_outstanding = cfg.getint(cs, 'max_requests_outstanding')
19   c.target_outstanding = cfg.getint(cs, 'target_requests_outstanding')
20   password = pw
21
22 def process_cfg():
23   global url
24   global max_requests_outstanding
25
26   process_cfg_common_always()
27   process_cfg_server()
28
29   try:
30     c.url = cfg.get('server','url')
31   except NoOptionError:
32     process_cfg_saddrs()
33     c.url = c.saddrs[0].url()
34
35   process_cfg_clients(set_client)
36
37   c.routes = cfg.get('virtual','routes')
38   c.max_queue_time = cfg.getint(client_cs, 'max_queue_time')
39   c.max_batch_up   = cfg.getint(client_cs, 'max_batch_up')
40   c.http_timeout   = cfg.getint(client_cs, 'http_timeout')
41   c.http_retry     = cfg.getint(client_cs, 'http_retry')
42
43   process_cfg_ipif(client_cs,
44                    (('local', 'client'),
45                     ('peer',  'server'),
46                     ('rnets', 'routes')))
47
48 outstanding = 0
49
50 def start_client():
51   global queue
52   global agent
53   queue = PacketQueue('up', c.max_queue_time)
54   agent = twisted.web.client.Agent(reactor, connectTimeout = c.http_timeout)
55
56 def outbound(packet, saddr, daddr):
57   #print('OUT ', saddr, daddr, repr(packet))
58   queue.append(packet)
59   check_outbound()
60
61 class ResponseConsumer(twisted.internet.protocol.Protocol):
62   def __init__(self, req):
63     self._req = req
64     self._ssd = SlipStreamDecoder('req %s' % id(req), queue_inbound)
65     self._log(DBG.HTTP_CTRL, '__init__')
66
67   def _log(self, dflag, msg, **kwargs):
68     log_debug(dflag, 'RC ' + msg, idof=self._req, **kwargs)
69
70   def dataReceived(self, data):
71     self._log(DBG.HTTP_CTRL, 'dataReceived', d=data)
72     try:
73       self._ssd.inputdata(data)
74     except Exception as e:
75       self._handleexception()
76
77   def connectionMade(self):
78     self._log(DBG.HTTP_CTRL, 'connectionMade')
79
80   def connectionLost(self, reason):
81     self._log(DBG.HTTP_CTRL, 'connectionLost ' + str(reason))
82     if not reason.check(twisted.web.client.ResponseDone):
83       self._asyncfailure(reason)
84       return
85     try:
86       self._ssd.flush()
87     except Exception as e:
88       self._handleexception()
89
90   def _handleexception(self):
91     self._asyncfailure(traceback.format_exc())
92
93   def _asyncfailure(self, reason):
94     self._log(DBG.HTTP_CTRL, '_asyncFailure ' + str(reason))
95     req_err(self._req, reason)
96
97 class ErrorResponseConsumer(twisted.internet.protocol.Protocol):
98   def __init__(self, req, resp):
99     self._req = req
100     self._resp = resp
101
102     try:
103       self._phrase = resp.phrase.decode('utf-8')
104     except Exception:
105       self._phrase = repr(resp.phrase)
106
107     self._log(DBG.HTTP_CTRL, '__init__ %d %s' % (resp.code, self._phrase))
108
109   def _log(self, dflag, msg, **kwargs):
110     log_debug(dflag,'ERROR-RC '+msg, idof=self._req, **kwargs)
111
112   def connectionMade(self):
113     self._m = b''
114
115   def dataReceived(self, data):
116     self._log(DBG.HTTP_CTRL, 'dataReceived ' + repr(data))
117     self._m += data
118
119   def connectionLost(self, reason):
120     try:
121       mbody = self._m.decode('utf-8')
122     except Exception:
123       mbody = repr(self._m)
124     if not reason.check(twisted.web.client.ResponseDone):
125       mbody += ' || ' + str(reason)
126     req_err(self._req,
127             "FAILED %d %s | %s"
128             % (self._resp.code, self._phrase, mbody))
129
130 def req_ok(req, resp):
131   log_debug(DBG.HTTP_CTRL,
132             'req_ok %d %s %s' % (resp.code, repr(resp.phrase), str(resp)),
133             idof=req)
134   if resp.code == 200:
135     rc = ResponseConsumer(req)
136   else:
137     rc = ErrorResponseConsumer(req, resp)
138
139   resp.deliverBody(rc)
140
141 def req_err(req, err):
142   log_debug(DBG.HTTP_CTRL, 'req_err ' + str(err), idof=req)
143   if isinstance(err, twisted.python.failure.Failure):
144     err = err.getTraceback()
145   print(err, file=sys.stderr)
146   reactor.callLater(c.http_retry, (lambda: req_fin(req)))
147
148 def req_fin(req):
149   global outstanding
150   outstanding -= 1
151   log_debug(DBG.HTTP_CTRL, 'req_fin OS=%d' % outstanding, idof=req)
152   check_outbound()
153
154 def check_outbound():
155   global outstanding
156
157   while True:
158     if                          outstanding >= c.max_outstanding   : break
159     if not queue.nonempty() and outstanding >= c.target_outstanding: break
160
161     d = b''
162     def moredata(s): nonlocal d; d += s
163     queue.process((lambda: len(d)),
164                   moredata,
165                   c.max_batch_up)
166     
167     d = mime_translate(d)
168
169     crlf = b'\r\n'
170     lf   =   b'\n'
171     mime = (b'--b'                                        + crlf +
172             b'Content-Type: text/plain; charset="utf-8"'  + crlf +
173             b'Content-Disposition: form-data; name="m"'   + crlf + crlf +
174             str(c.client)             .encode('ascii')    + crlf +
175             password                                      + crlf +
176             str(c.target_outstanding) .encode('ascii')    + crlf +
177           ((
178             b'--b'                                        + crlf +
179             b'Content-Type: application/octet-stream'     + crlf +
180             b'Content-Disposition: form-data; name="d"'   + crlf + crlf +
181             d                                             + crlf
182            ) if len(d) else b'')                               +
183             b'--b--'                                      + crlf)
184
185     #df = open('data.dump.dbg', mode='wb')
186     #df.write(mime)
187     #df.close()
188     # POST -use -c 'multipart/form-data; boundary="b"' http://localhost:8099/ <data.dump.dbg
189
190     log_debug(DBG.HTTP_FULL, 'requesting: ' + str(mime))
191
192     hh = { 'User-Agent': ['hippotat'],
193            'Content-Type': ['multipart/form-data; boundary="b"'],
194            'Content-Length': [str(len(mime))] }
195
196     bytesreader = io.BytesIO(mime)
197     producer = twisted.web.client.FileBodyProducer(bytesreader)
198
199     req = agent.request(b'POST',
200                         c.url,
201                         twisted.web.client.Headers(hh),
202                         producer)
203
204     outstanding += 1
205     log_debug(DBG.HTTP_CTRL, 'request OS=%d' % outstanding, idof=req, d=d)
206     req.addTimeout(c.http_timeout, reactor)
207     req.addCallback((lambda resp: req_ok(req, resp)))
208     req.addErrback((lambda err: req_err(req, err)))
209
210 common_startup()
211 process_cfg()
212 start_client()
213 start_ipif(c.ipif_command, outbound)
214 check_outbound()
215 common_run()