java_gen: work in progress commit of java generator
diff --git a/java_gen/java_utils.py b/java_gen/java_utils.py
new file mode 100644
index 0000000..c55b275
--- /dev/null
+++ b/java_gen/java_utils.py
@@ -0,0 +1,215 @@
+import os
+import errno
+import re
+import subprocess
+import time
+
+def name_c_to_camel(name):
+ """ 'of_stats_reply' -> 'ofStatsReply' """
+ tokens = name.split('_')
+ for i in range(1, len(tokens)):
+ tokens[i] = tokens[i].title()
+ return "".join(tokens)
+
+def name_c_to_caps_camel(name):
+ """ 'of_stats_reply' to 'OFStatsReply' """
+ camel = name_c_to_camel(name.title())
+ if camel.startswith('Of'):
+ return camel.replace('Of','OF',1)
+ else:
+ return camel
+
+
+class JType(object):
+ """ Wrapper class to hold C to Java type conversion information """
+ def __init__(self, pub_type, priv_type=None, size=None, read_op=None, write_op=None):
+ self.pub_type = pub_type # the type we expose externally, e.g. 'U8'
+ if priv_type is None:
+ priv_type = pub_type
+ self.priv_type = priv_type # the internal storage type
+ self.size = size # bytes on the wire; None == variable length or hard to calc
+ if read_op is None:
+ read_op = 'ChannelUtils.read%s(this, "$name", bb)' % self.pub_type
+ if write_op is None:
+ write_op = 'ChannelUtils.write($name)'
+ self._read_op = read_op
+ self.write_op = write_op
+
+ @property
+ def public_type(self):
+ """ return the public type """
+ return self.pub_type
+
+ def priv(self):
+ """ return the public type """
+ return self.priv_type
+
+ def has_priv(self):
+ """ Is the private type different from the public one?"""
+ return self.pub_type != self.priv_type
+
+ def read_op(self, version=None):
+ if callable(self._read_op):
+ return self._read_op(version)
+ else:
+ return self._read_op
+
+hello_elem_list = JType("List<OFHelloElement>",
+ read_op = 'ChannelUtils.readHelloElementList(bb)',
+ write_op = 'ChannelUtils.writeHelloElementList(bb)'
+ )
+
+u8 = JType('byte', size=1, read_op='bb.readByte()',
+ write_op='bb.writeByte($name)')
+u16 = JType('int', 'int', size=2, read_op='U16.f(bb.readShort())',
+ write_op='bb.writeShort(U16.t($name))')
+u32 = JType('int', 'int', size=4, read_op='bb.readInt()',
+ write_op='bb.writeInt($name)')
+u64 = JType('U64', 'U64', size=8, read_op='U64.of(bb.readLong())',
+ write_op='bb.writeLong($name.getLong())')
+of_port= JType('OFPort',size=None,
+ read_op=lambda(version): 'OFPort.ofShort(bb.readShort())' if version.int_version < 2 else 'OFPort.ofInt(bb.readInt())',
+ write_op='$name.writeTo(bb)')
+one_byte_array = JType('byte[]', size=1,
+ read_op = 'ChannelUtils.readBytes(bb, 1)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+two_byte_array = JType('byte[]', size=2,
+ read_op = 'ChannelUtils.readBytes(bb, 2)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+three_byte_array = JType('byte[]', size=3,
+ read_op = 'ChannelUtils.readBytes(bb, 3)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+four_byte_array = JType('byte[]', size=4,
+ read_op = 'ChannelUtils.readBytes(bb, 4)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+five_byte_array = JType('byte[]', size=5,
+ read_op = 'ChannelUtils.readBytes(bb, 5)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+six_byte_array = JType('byte[]', size=6,
+ read_op = 'ChannelUtils.readBytes(bb, 6)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+seven_byte_array = JType('byte[]', size=7,
+ read_op = 'ChannelUtils.readBytes(bb, 7)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+actions_list = JType('List<OFAction>', size='ChannelUtils.calcListSize($name)',
+ read_op = 'ChannelUtils.readActionsList(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeList(this, $name)')
+instructions_list = JType('List<OFInstruction>', size='ChannelUtils.calcListSize($name)',
+ read_op = 'ChannelUtils.readInstructionsList(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeList(this, $name)')
+buckets_list = JType('List<OFBucket>', size='ChannelUtils.calcListSize($name)',
+ read_op = 'ChannelUtils.readBucketList(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeList(this, $name)')
+port_desc_list = JType('List<OFPhysicalPort>', size='ChannelUtils.calcListSize($name)',
+ read_op = 'ChannelUtils.readPhysicalPortList(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeList(this, $name)')
+port_desc = JType('OFPhysicalPort', size='$name.getLength()',
+ read_op = 'ChannelUtils.readPhysicalPort(bb)',
+ write_op = 'ChannelUtils.write(this, $name)')
+packet_queue_list = JType('List<OFPacketQueue>', size='ChannelUtils.calcListSize($name)',
+ read_op = 'ChannelUtils.readPacketQueueList(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeList(this, $name)')
+octets = JType('byte[]', size="length - MINIMUM_LENGTH",
+ read_op = 'ChannelUtils.readBytes(bb, length - MINIMUM_LENGTH)',
+ write_op = 'ChannelUtils.writeBytes(bb, this.$name)')
+of_match = JType('Match', size="$name.getLength()",
+ read_op = 'ChannelUtils.readOFMatch(bb)',
+ write_op = 'ChannelUtils.writeOFMatch(this, $name)')
+flow_mod_cmd = JType('OFFlowModCmd', size="$name.getLength()",
+ read_op = 'ChannelUtils.readOFFlowModCmd(bb)',
+ write_op = 'ChannelUtils.writeOFFlowModCmd(this, $name)')
+mac_addr = JType('MacAddress', 'byte[]', size=6,
+ read_op = 'MacAddress.readFrom(bb)',
+ write_op = 'ChannelUtils.writeBytes(bb, $name)')
+bsn_interface_list = JType("List<OFBsnInterface>",
+ read_op = 'ChannelUtils.readBsnInterfaceList(bb)',
+ write_op = 'ChannelUtils.writeBsnInterfaceList(bb)'
+ )
+meter_band_list = JType("List<OFMeterBand>",
+ read_op = 'ChannelUtils.readMeterBandList(bb)',
+ write_op = 'ChannelUtils.writeMeterBandList(bb, $name)'
+ )
+
+
+
+
+
+default_mtype_to_jtype_convert_map = {
+ 'uint8_t' : u8,
+ 'uint16_t' : u16,
+ 'uint32_t' : u32,
+ 'uint64_t' : u64,
+ 'uint8_t[1]' : one_byte_array,
+ 'uint8_t[2]' : two_byte_array,
+ 'uint8_t[3]' : three_byte_array,
+ 'uint8_t[4]' : four_byte_array,
+ 'uint8_t[5]' : five_byte_array,
+ 'uint8_t[6]' : six_byte_array,
+ 'uint8_t[7]' : seven_byte_array,
+ 'of_port_no_t' : of_port,
+ 'of_list_action_t' : actions_list,
+ 'of_list_instruction_t' : instructions_list,
+ 'of_list_bucket_t': buckets_list,
+ 'of_list_port_desc_t' : port_desc_list,
+ 'of_list_packet_queue_t' : packet_queue_list,
+ 'of_octets_t' : octets,
+ 'of_match_t': of_match,
+ 'of_fm_cmd_t': flow_mod_cmd,
+ 'of_mac_addr_t': mac_addr,
+ 'of_port_desc_t': port_desc,
+ 'of_list_bsn_interface_t': bsn_interface_list,
+ 'of_list_hello_elem_t': hello_elem_list,
+ 'of_list_meter_band_t': meter_band_list
+ }
+
+## This is where we drop in special case handling for certain types
+exceptions = {
+ 'OFPacketIn': {
+ 'data' : octets
+ },
+ }
+
+
+def convert_to_jtype(obj_name, field_name, c_type):
+ """ Convert from a C type ("uint_32") to a java type ("U32")
+ and return a JType object with the size, internal type, and marshalling functions"""
+ if obj_name in exceptions and field_name in exceptions[obj_name]:
+ return exceptions[obj_name][field_name]
+ elif c_type in default_mtype_to_jtype_convert_map:
+ return default_mtype_to_jtype_convert_map[c_type]
+ else:
+ print "WARN: Couldn't find java type conversion for '%s' in %s:%s" % (c_type, obj_name, field_name)
+ jtype = name_c_to_caps_camel(c_type) # not sure... try to fake it
+ return JType(jtype)
+
+
+def mkdir_p(path):
+ """ Emulates `mkdir -p` """
+ try:
+ os.makedirs(path)
+ except OSError as exc: # Python >2.5
+ if exc.errno == errno.EEXIST:
+ pass
+ else: raise
+
+def copy_file_with_boiler_plate(src_name, dst_name, with_boiler=True):
+ with open("java_gen/pre-written/%s" % src_name, "r") as src:
+ with open(dst_name, "w") as dst:
+ if with_boiler:
+ print_boiler_plate(os.path.basename(dst_name), dst)
+ dst.writelines(src.readlines())
+
+def frob(s, **kwargs):
+ """ Step through string s and for each key in kwargs,
+ replace $key with kwargs[key] in s.
+ """
+ for k,v in kwargs.iteritems():
+ s = s.replace('$%s' % k, v)
+ return s
+
+def copy_prewrite_tree(basedir):
+ """ Recursively copy the directory structure from ./java_gen/pre-write
+ into $basedir"""
+ print "Copying pre-written files into %s" % basedir
+# subprocess.call("cd java_gen/pre-written && tar cpf - . | ( cd ../../%s && tar xvpf - )" % basedir,
+# shell=True)