src/python/loxi/of11/instruction.py

# Copyright (c) 2008 The Board of Trustees of The Leland Stanford Junior University
# Copyright (c) 2011, 2012 Open Networking Foundation
# Copyright (c) 2012, 2013 Big Switch Networks, Inc.
# See the file LICENSE.pyloxi which should have been included in the source distribution

# Automatically generated by LOXI from template instruction.py
# Do not modify

import struct
import action
import const
import util
import loxi.generic_util
import loxi

def unpack_list(reader):
    def deserializer(reader, typ):
        parser = parsers.get(typ)
        if not parser: raise loxi.ProtocolError("unknown instruction type %d" % typ)
        return parser(reader)
    return loxi.generic_util.unpack_list_tlv16(reader, deserializer)

class Instruction(object):
    type = None # override in subclass
    pass

class apply_actions(Instruction):
    type = 4

    def __init__(self, actions=None):
        if actions != None:
            self.actions = actions
        else:
            self.actions = []
        return

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append('\x00' * 4)
        packed.append(util.pack_list(self.actions))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = apply_actions()
        if type(buf) == loxi.generic_util.OFReader:
            reader = buf
        else:
            reader = loxi.generic_util.OFReader(buf)
        _type = reader.read("!H")[0]
        assert(_type == 4)
        _len = reader.read("!H")[0]
        reader.skip(4)
        obj.actions = action.unpack_list(reader)
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.actions != other.actions: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("apply_actions {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("actions = ");
                q.pp(self.actions)
            q.breakable()
        q.text('}')

class clear_actions(Instruction):
    type = 5

    def __init__(self):
        return

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append('\x00' * 4)
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = clear_actions()
        if type(buf) == loxi.generic_util.OFReader:
            reader = buf
        else:
            reader = loxi.generic_util.OFReader(buf)
        _type = reader.read("!H")[0]
        assert(_type == 5)
        _len = reader.read("!H")[0]
        reader.skip(4)
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("clear_actions {")
        with q.group():
            with q.indent(2):
                q.breakable()
            q.breakable()
        q.text('}')

class goto_table(Instruction):
    type = 1

    def __init__(self, table_id=None):
        if table_id != None:
            self.table_id = table_id
        else:
            self.table_id = 0
        return

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append(struct.pack("!B", self.table_id))
        packed.append('\x00' * 3)
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = goto_table()
        if type(buf) == loxi.generic_util.OFReader:
            reader = buf
        else:
            reader = loxi.generic_util.OFReader(buf)
        _type = reader.read("!H")[0]
        assert(_type == 1)
        _len = reader.read("!H")[0]
        obj.table_id = reader.read("!B")[0]
        reader.skip(3)
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.table_id != other.table_id: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("goto_table {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("table_id = ");
                q.text("%#x" % self.table_id)
            q.breakable()
        q.text('}')

class write_actions(Instruction):
    type = 3

    def __init__(self, actions=None):
        if actions != None:
            self.actions = actions
        else:
            self.actions = []
        return

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append('\x00' * 4)
        packed.append(util.pack_list(self.actions))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = write_actions()
        if type(buf) == loxi.generic_util.OFReader:
            reader = buf
        else:
            reader = loxi.generic_util.OFReader(buf)
        _type = reader.read("!H")[0]
        assert(_type == 3)
        _len = reader.read("!H")[0]
        reader.skip(4)
        obj.actions = action.unpack_list(reader)
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.actions != other.actions: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("write_actions {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("actions = ");
                q.pp(self.actions)
            q.breakable()
        q.text('}')

class write_metadata(Instruction):
    type = 2

    def __init__(self, metadata=None, metadata_mask=None):
        if metadata != None:
            self.metadata = metadata
        else:
            self.metadata = 0
        if metadata_mask != None:
            self.metadata_mask = metadata_mask
        else:
            self.metadata_mask = 0
        return

    def pack(self):
        packed = []
        packed.append(struct.pack("!H", self.type))
        packed.append(struct.pack("!H", 0)) # placeholder for len at index 1
        packed.append('\x00' * 4)
        packed.append(struct.pack("!Q", self.metadata))
        packed.append(struct.pack("!Q", self.metadata_mask))
        length = sum([len(x) for x in packed])
        packed[1] = struct.pack("!H", length)
        return ''.join(packed)

    @staticmethod
    def unpack(buf):
        obj = write_metadata()
        if type(buf) == loxi.generic_util.OFReader:
            reader = buf
        else:
            reader = loxi.generic_util.OFReader(buf)
        _type = reader.read("!H")[0]
        assert(_type == 2)
        _len = reader.read("!H")[0]
        reader.skip(4)
        obj.metadata = reader.read("!Q")[0]
        obj.metadata_mask = reader.read("!Q")[0]
        return obj

    def __eq__(self, other):
        if type(self) != type(other): return False
        if self.metadata != other.metadata: return False
        if self.metadata_mask != other.metadata_mask: return False
        return True

    def __ne__(self, other):
        return not self.__eq__(other)

    def show(self):
        import loxi.pp
        return loxi.pp.pp(self)

    def pretty_print(self, q):
        q.text("write_metadata {")
        with q.group():
            with q.indent(2):
                q.breakable()
                q.text("metadata = ");
                q.text("%#x" % self.metadata)
                q.text(","); q.breakable()
                q.text("metadata_mask = ");
                q.text("%#x" % self.metadata_mask)
            q.breakable()
        q.text('}')


def parse_experimenter(reader):
    experimenter, = reader.peek("!4xL")
    if experimenter == 0x005c16c7: # Big Switch Networks
        subtype, = reader.peek("!8xL")
    else:
        raise loxi.ProtocolError("unexpected experimenter id %#x" % experimenter)

    if subtype in experimenter_parsers[experimenter]:
        return experimenter_parsers[experimenter][subtype](reader)
    else:
        raise loxi.ProtocolError("unexpected experimenter id %#x subtype %#x" % (experimenter, subtype))

parsers = {
    const.OFPIT_GOTO_TABLE : goto_table.unpack,
    const.OFPIT_WRITE_METADATA : write_metadata.unpack,
    const.OFPIT_WRITE_ACTIONS : write_actions.unpack,
    const.OFPIT_APPLY_ACTIONS : apply_actions.unpack,
    const.OFPIT_CLEAR_ACTIONS : clear_actions.unpack,
}

experimenter_parsers = {
}