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# Packet buffering.
#
# Author:Just van den Broecke
import copy
from stetl.util import Util
from stetl.filter import Filter
from stetl.packet import FORMAT
log = Util.get_log("packetbuffer")
class PacketBuffer(Filter):
"""
Buffers all incoming Packets, main use is unit-testing to inspect Packets after ETL is done.
"""
# Constructor
def __init__(self, configdict, section):
Filter.__init__(self, configdict, section, consumes=FORMAT.any, produces=FORMAT.any)
self.packet_list = []
def invoke(self, packet):
# Buffer Packet and pass-through, we need a deep copy as Packets may be cleared/reused
self.packet_list.append(copy.copy(packet))
return packet
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