Initial Commit

src/python/tHome/sma/Request.py

@@ -0,0 +1,58 @@
+#===========================================================================
+#
+# Data request packet
+#
+#===========================================================================
+
+import logging
+import socket
+# Import the base header and the struct type codes we're using.
+from .Header import *
+from .. import util
+
+#===========================================================================
+class Data ( Header ):
+   _fields = Header._fields + [
+      ( uint4, 'command' ),
+      ( uint4, 'first' ),
+      ( uint4, 'last' ),
+      ( uint4, 'trailer' ),
+      ]
+
+   struct = util.NamedStruct( 'LITTLE_ENDIAN', _fields )
+   
+   #------------------------------------------------------------------------
+   def __init__( self, command, first, last ):
+      Header.__init__( self )
+
+      self.command = command
+      self.first = first
+      self.last = last
+      self.trailer = 0x00
+
+   #------------------------------------------------------------------------
+   def send( self, sock ):
+      bytes = self.struct.pack( self )
+
+      if self._log.isEnabledFor( logging.DEBUG ):
+         self._log.debug( "Send: Request.Data packet\n" + 
+                          util.hex.dump( bytes ) )
+
+      # Send the request and read the reply back in.
+      try:
+         sock.send( bytes )
+         reply = sock.recv( 4096 )
+         
+      except socket.timeout as e:
+         msg = "Data request failed - time out error"
+         self._log.error( msg )
+         util.Error.raiseException( e, msg )
+         
+      if self._log.isEnabledFor( logging.DEBUG ):
+         self._log.debug( "Recv: Reply packet\n" + util.hex.dump( reply ) )
+      
+      return reply
+
+   #------------------------------------------------------------------------
+
+#===========================================================================