crashing and msgs

[hippotat.git] / hippotat / __init__.py

diff --git a/hippotat/__init__.py b/hippotat/__init__.py
index 064909100fbe409fe30ee67b772c902140060443..3e8649ae1e122f7b4252ad4dbc4453e54ffca673 100644 (file)
--- a/hippotat/__init__.py
+++ b/hippotat/__init__.py
@@ -23,6 +23,7 @@ from configparser import NoOptionError
 import collections
 import time
 import codecs
+import traceback
 
 import re as regexp
 
@@ -37,14 +38,18 @@ class DBG(twisted.python.constants.Names):
   INIT = NamedConstant()
   QUEUE = NamedConstant()
   QUEUE_CTRL = NamedConstant()
+  HTTP_FULL = NamedConstant()
+  SLIP_FULL = NamedConstant()
+  CTRL_DUMP = NamedConstant()
 
 _hex_codec = codecs.getencoder('hex_codec')
 
 log = twisted.logger.Logger()
 
 def log_debug(dflag, msg, idof=None, d=None):
+  #print('---------------->',repr((dflag, msg, idof, d)), file=sys.stderr)
   if idof is not None:
-    msg = '[%d] %s' % (id(idof), msg)
+    msg = '[%#x] %s' % (id(idof), msg)
   if d is not None:
     d = d[0:64]
     d = _hex_codec(d)[0].decode('ascii')
@@ -153,31 +158,39 @@ def ipnetwork(input):
 #---------- ipif (SLIP) subprocess ----------
 
 class SlipStreamDecoder():
-  def __init__(self, on_packet):
-    # we will call packet(<packet>)
+  def __init__(self, desc, on_packet):
     self._buffer = b''
     self._on_packet = on_packet
+    self._desc = desc
+    self._log('__init__')
+
+  def _log(self, msg, **kwargs):
+    log_debug(DBG.SLIP_FULL, 'slip %s: %s' % (self._desc, msg), **kwargs)
 
   def inputdata(self, data):
-    #print('SLIP-GOT ', repr(data))
-    self._buffer += data
-    packets = slip.decode(self._buffer)
+    self._log('inputdata', d=data)
+    data = self._buffer + data
+    self._buffer = b''
+    packets = slip.decode(data)
     self._buffer = packets.pop()
     for packet in packets:
       self._maybe_packet(packet)
+    self._log('bufremain', d=self._buffer)
 
   def _maybe_packet(self, packet):
-      if len(packet):
-        self._on_packet(packet)
+    self._log('maybepacket', d=packet)
+    if len(packet):
+      self._on_packet(packet)
 
   def flush(self):
+    self._log('flush')
     self._maybe_packet(self._buffer)
     self._buffer = b''
 
 class _IpifProcessProtocol(twisted.internet.protocol.ProcessProtocol):
   def __init__(self, router):
     self._router = router
-    self._decoder = SlipStreamDecoder(self.slip_on_packet)
+    self._decoder = SlipStreamDecoder('ipif', self.slip_on_packet)
   def connectionMade(self): pass
   def outReceived(self, data):
     self._decoder.inputdata(data)
@@ -199,6 +212,7 @@ def start_ipif(command, router):
                        env=None)
 
 def queue_inbound(packet):
+  log_debug(DBG.FLOW, "queue_inbound", d=packet)
   ipif.transport.write(slip.delimiter)
   ipif.transport.write(slip.encode(packet))
   ipif.transport.write(slip.delimiter)
@@ -208,6 +222,7 @@ def queue_inbound(packet):
 class PacketQueue():
   def __init__(self, desc, max_queue_time):
     self._desc = desc
+    assert(desc + '')
     self._max_queue_time = max_queue_time
     self._pq = collections.deque() # packets
 
@@ -271,7 +286,8 @@ _crashing = False
 def crash(err):
   global _crashing
   _crashing = True
-  print('CRASH ', err, file=sys.stderr)
+  print('========== CRASH ==========', err,
+        '===========================', file=sys.stderr)
   try: reactor.stop()
   except twisted.internet.error.ReactorNotRunning: pass