client

   1 #!/usr/bin/python3
   2
   3 from hippotatlib import *
   4
   5 import twisted.web
   6 import twisted.web.client
   7
   8 import io
   9
  10 class GeneralResponseConsumer(twisted.internet.protocol.Protocol):
  11   def __init__(self, cl, req, desc):
  12     self._cl = cl
  13     self._req = req
  14     self._desc = desc
  15
  16   def _log(self, dflag, msg, **kwargs):
  17     self._cl.log(dflag, '%s: %s' % (self._desc, msg), idof=self._req, **kwargs)
  18
  19   def connectionMade(self):
  20     self._log(DBG.HTTP_CTRL, 'connectionMade')
  21
  22 class ResponseConsumer(GeneralResponseConsumer):
  23   def __init__(self, cl, req):
  24     super().__init__(cl, req, 'RC')
  25     ssddesc = '[%s] %s' % (id(req), self._desc)
  26     self._ssd = SlipStreamDecoder(ssddesc, partial(queue_inbound, cl.ipif))
  27     self._log(DBG.HTTP_CTRL, '__init__')
  28
  29   def dataReceived(self, data):
  30     self._log(DBG.HTTP, 'dataReceived', d=data)
  31     try:
  32       self._ssd.inputdata(data)
  33     except Exception as e:
  34       self._handleexception()
  35
  36   def connectionLost(self, reason):
  37     self._log(DBG.HTTP_CTRL, 'connectionLost ' + str(reason))
  38     if not reason.check(twisted.web.client.ResponseDone):
  39       self.latefailure()
  40       return
  41     try:
  42       self._log(DBG.HTTP, 'ResponseDone')
  43       self._ssd.flush()
  44       self._cl.req_fin(self._req)
  45     except Exception as e:
  46       self._handleexception()
  47     self._cl.report_running()
  48
  49   def _handleexception(self):
  50     self._latefailure(traceback.format_exc())
  51
  52   def _latefailure(self, reason):
  53     self._log(DBG.HTTP_CTRL, '_latefailure ' + str(reason))
  54     self._cl.req_err(self._req, reason)
  55
  56 class ErrorResponseConsumer(GeneralResponseConsumer):
  57   def __init__(self, cl, req, resp):
  58     super().__init__(cl, req, 'ERROR-RC')
  59     self._resp = resp
  60     self._m = b''
  61     try:
  62       self._phrase = resp.phrase.decode('utf-8')
  63     except Exception:
  64       self._phrase = repr(resp.phrase)
  65     self._log(DBG.HTTP_CTRL, '__init__ %d %s' % (resp.code, self._phrase))
  66
  67   def dataReceived(self, data):
  68     self._log(DBG.HTTP_CTRL, 'dataReceived ' + repr(data))
  69     self._m += data
  70
  71   def connectionLost(self, reason):
  72     try:
  73       mbody = self._m.decode('utf-8')
  74     except Exception:
  75       mbody = repr(self._m)
  76     if not reason.check(twisted.web.client.ResponseDone):
  77       mbody += ' || ' + str(reason)
  78     self._cl.req_err(self._req,
  79             "FAILED %d %s | %s"
  80             % (self._resp.code, self._phrase, mbody))
  81
  82 class Client():
  83   def __init__(cl, c,ss,cs):
  84     cl.c = c
  85     cl.outstanding = { }
  86     cl.desc = '[%s %s] ' % (ss,cs)
  87     cl.running_reported = False
  88     cl.log_info('setting up')
  89
  90   def log_info(cl, msg):
  91     log.info(cl.desc + msg, dflag=False)
  92
  93   def report_running(cl):
  94     if not cl.running_reported:
  95       cl.log_info('running OK')
  96       cl.running_reported = True
  97
  98   def log(cl, dflag, msg, **kwargs):
  99     log_debug(dflag, cl.desc + msg, **kwargs)
 100
 101   def log_outstanding(cl):
 102     cl.log(DBG.CTRL_DUMP, 'OS %s' % cl.outstanding)
 103
 104   def start(cl):
 105     cl.queue = PacketQueue('up', cl.c.max_queue_time)
 106     cl.agent = twisted.web.client.Agent(
 107       reactor, connectTimeout = cl.c.http_timeout)
 108
 109   def outbound(cl, packet, saddr, daddr):
 110     #print('OUT ', saddr, daddr, repr(packet))
 111     cl.queue.append(packet)
 112     cl.check_outbound()
 113
 114   def req_ok(cl, req, resp):
 115     cl.log(DBG.HTTP_CTRL,
 116             'req_ok %d %s %s' % (resp.code, repr(resp.phrase), str(resp)),
 117             idof=req)
 118     if resp.code == 200:
 119       rc = ResponseConsumer(cl, req)
 120     else:
 121       rc = ErrorResponseConsumer(cl, req, resp)
 122
 123     resp.deliverBody(rc)
 124     # now rc is responsible for calling req_fin
 125
 126   def req_err(cl, req, err):
 127     # called when the Deferred fails, or (if it completes),
 128     # later, by ResponsConsumer or ErrorResponsConsumer
 129     try:
 130       cl.log(DBG.HTTP_CTRL, 'req_err ' + str(err), idof=req)
 131       if isinstance(err, twisted.python.failure.Failure):
 132         err = err.getTraceback()
 133       print('[%#x] %s' % (id(req), err), file=sys.stderr)
 134       if not isinstance(cl.outstanding[req], int):
 135         raise RuntimeError('[%#x] previously %s' %
 136                            (id(req), cl.outstanding[req]))
 137       cl.outstanding[req] = err
 138       cl.log_outstanding()
 139       reactor.callLater(cl.c.http_retry, partial(cl.req_fin, req))
 140     except Exception as e:
 141       crash(traceback.format_exc() + '\n----- handling -----\n' + err)
 142
 143   def req_fin(cl, req):
 144     del cl.outstanding[req]
 145     cl.log(DBG.HTTP_CTRL, 'req_fin OS=%d' % len(cl.outstanding), idof=req)
 146     cl.check_outbound()
 147
 148   def check_outbound(cl):
 149     while True:
 150       if len(cl.outstanding) >= cl.c.max_outstanding:
 151         break
 152
 153       if (not cl.queue.nonempty() and
 154           len(cl.outstanding) >= cl.c.target_requests_outstanding):
 155         break
 156
 157       d = b''
 158       def moredata(s): nonlocal d; d += s
 159       cl.queue.process((lambda: len(d)),
 160                     moredata,
 161                     cl.c.max_batch_up)
 162
 163       d = mime_translate(d)
 164
 165       crlf = b'\r\n'
 166       lf   =   b'\n'
 167       mime = (b'--b'                                        + crlf +
 168               b'Content-Type: text/plain; charset="utf-8"'  + crlf +
 169               b'Content-Disposition: form-data; name="m"'   + crlf + crlf +
 170               str(cl.c.client)            .encode('ascii')  + crlf +
 171               cl.c.password                                 + crlf +
 172               str(cl.c.target_requests_outstanding)
 173                                           .encode('ascii')  + crlf +
 174               str(cl.c.http_timeout)      .encode('ascii')  + crlf +
 175             ((
 176               b'--b'                                        + crlf +
 177               b'Content-Type: application/octet-stream'     + crlf +
 178               b'Content-Disposition: form-data; name="d"'   + crlf + crlf +
 179               d                                             + crlf
 180              ) if len(d) else b'')                               +
 181               b'--b--'                                      + crlf)
 182
 183       #df = open('data.dump.dbg', mode='wb')
 184       #df.write(mime)
 185       #df.close()
 186       # POST -use -c 'multipart/form-data; boundary="b"' http://localhost:8099/ <data.dump.dbg
 187
 188       cl.log(DBG.HTTP_FULL, 'requesting: ' + str(mime))
 189
 190       hh = { 'User-Agent': ['hippotat'],
 191              'Content-Type': ['multipart/form-data; boundary="b"'],
 192              'Content-Length': [str(len(mime))] }
 193
 194       bytesreader = io.BytesIO(mime)
 195       producer = twisted.web.client.FileBodyProducer(bytesreader)
 196
 197       req = cl.agent.request(b'POST',
 198                           cl.c.url,
 199                           twisted.web.client.Headers(hh),
 200                           producer)
 201
 202       cl.outstanding[req] = len(d)
 203       cl.log(DBG.HTTP_CTRL,
 204              'request OS=%d' % len(cl.outstanding),
 205              idof=req, d=d)
 206       req.addTimeout(cl.c.http_timeout, reactor)
 207       req.addCallback(partial(cl.req_ok, req))
 208       req.addErrback(partial(cl.req_err, req))
 209
 210     cl.log_outstanding()
 211
 212 clients = [ ]
 213
 214 def process_cfg(putative_servers, putative_clients):
 215   global clients
 216
 217   for ss in putative_servers.values():
 218     for (ci,cs) in putative_clients.items():
 219       c = ConfigResults()
 220
 221       sections = cfg_process_client_common(c,ss,cs,ci)
 222       if not sections: continue
 223
 224       def srch(getter,key): return cfg_search(getter,key,sections)
 225
 226       c.http_timeout   += srch(cfg.getint, 'http_timeout_grace')
 227       c.max_outstanding = srch(cfg.getint, 'max_requests_outstanding')
 228       c.max_batch_up    = srch(cfg.getint, 'max_batch_up')
 229       c.http_retry      = srch(cfg.getint, 'http_retry')
 230       c.max_queue_time  = srch(cfg.getint, 'max_queue_time')
 231       c.vroutes         = srch(cfg.get,    'vroutes')
 232
 233       try: c.url = srch(cfg.get,'url')
 234       except NoOptionError:
 235         cfg_process_saddrs(c, ss)
 236         c.url = c.saddrs[0].url()
 237
 238       c.client = ci
 239
 240       cfg_process_vaddr(c,ss)
 241
 242       cfg_process_ipif(c,
 243                        sections,
 244                        (('local','client'),
 245                         ('peer', 'vaddr'),
 246                         ('rnets','vroutes')))
 247
 248       clients.append(Client(c,ss,cs))
 249
 250 common_startup(process_cfg)
 251
 252 for cl in clients:
 253   cl.start()
 254   cl.ipif = start_ipif(cl.c.ipif_command, cl.outbound)
 255   cl.check_outbound()
 256
 257 common_run()