msgproto: Convert static strings to a more generic enumeration system

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
This commit is contained in:
Kevin O'Connor 2019-03-05 12:42:35 -05:00 committed by KevinOConnor
parent 7d73a35805
commit db6e2d4c9e
5 changed files with 116 additions and 39 deletions

View File

@ -483,7 +483,7 @@ class MCU:
if self._is_shutdown:
return
self._is_shutdown = True
self._shutdown_msg = msg = params['#msg']
self._shutdown_msg = msg = params['static_string_id']
logging.info("MCU '%s' %s: %s\n%s\n%s", self._name, params['#name'],
self._shutdown_msg, self._clocksync.dump_debug(),
self._serial.dump_debug())

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@ -1,6 +1,6 @@
# Protocol definitions for firmware communication
#
# Copyright (C) 2016,2017 Kevin O'Connor <kevin@koconnor.net>
# Copyright (C) 2016-2019 Kevin O'Connor <kevin@koconnor.net>
#
# This file may be distributed under the terms of the GNU GPLv3 license.
import json, zlib, logging
@ -37,9 +37,10 @@ def crc16_ccitt(buf):
return crc
class PT_uint32:
is_int = 1
is_int = True
is_dynamic_string = False
max_length = 5
signed = 0
signed = False
def encode(self, out, v):
if v >= 0xc000000 or v < -0x4000000: out.append((v>>28) & 0x7f | 0x80)
if v >= 0x180000 or v < -0x80000: out.append((v>>21) & 0x7f | 0x80)
@ -61,17 +62,18 @@ class PT_uint32:
return v, pos
class PT_int32(PT_uint32):
signed = 1
signed = True
class PT_uint16(PT_uint32):
max_length = 3
class PT_int16(PT_int32):
signed = 1
signed = True
max_length = 3
class PT_byte(PT_uint32):
max_length = 2
class PT_string:
is_int = 0
is_int = False
is_dynamic_string = True
max_length = 64
def encode(self, out, v):
out.append(len(v))
@ -91,22 +93,55 @@ MessageTypes = {
'%s': PT_string(), '%.*s': PT_progmem_buffer(), '%*s': PT_buffer(),
}
class Enumeration:
is_int = False
is_dynamic_string = False
def __init__(self, pt, enum_name, enums):
self.pt = pt
self.max_length = pt.max_length
self.enum_name = enum_name
self.enums = enums
self.reverse_enums = {v: k for k, v in enums.items()}
def encode(self, out, v):
tv = self.enums.get(v)
if tv is None:
raise error("Unknown value '%s' in enumeration '%s'" % (
v, self.enum_name))
self.pt.encode(out, tv)
def parse(self, s, pos):
v, pos = self.pt.parse(s, pos)
tv = self.reverse_enums.get(v)
if tv is None:
tv = "?%d" % (v,)
return tv, pos
# Lookup the message types for a format string
def lookup_params(msgformat, enumerations={}):
out = []
argparts = [arg.split('=') for arg in msgformat.split()[1:]]
for name, fmt in argparts:
pt = MessageTypes[fmt]
for enum_name, enums in enumerations.items():
if name == enum_name or name.endswith('_' + enum_name):
pt = Enumeration(pt, enum_name, enums)
break
out.append((name, pt))
return out
# Update the message format to be compatible with python's % operator
def convert_msg_format(msgformat):
mf = msgformat.replace('%c', '%u')
mf = mf.replace('%.*s', '%s').replace('%*s', '%s')
return mf
for c in ['%u', '%i', '%hu', '%hi', '%c', '%.*s', '%*s']:
msgformat = msgformat.replace(c, '%s')
return msgformat
class MessageFormat:
def __init__(self, msgid, msgformat):
def __init__(self, msgid, msgformat, enumerations={}):
self.msgid = msgid
self.msgformat = msgformat
self.debugformat = convert_msg_format(msgformat)
parts = msgformat.split()
self.name = parts[0]
argparts = [arg.split('=') for arg in parts[1:]]
self.param_types = [MessageTypes[fmt] for name, fmt in argparts]
self.param_names = [(name, MessageTypes[fmt]) for name, fmt in argparts]
self.name = msgformat.split()[0]
self.param_names = lookup_params(msgformat, enumerations)
self.param_types = [t for name, t in self.param_names]
self.name_to_type = dict(self.param_names)
def encode(self, params):
out = []
@ -131,7 +166,7 @@ class MessageFormat:
out = []
for name, t in self.param_names:
v = params[name]
if not t.is_int:
if t.is_dynamic_string:
v = repr(v)
out.append(v)
return self.debugformat % tuple(out)
@ -162,7 +197,7 @@ class OutputFormat:
out = []
for t in self.param_types:
v, pos = t.parse(s, pos)
if not t.is_int:
if t.is_dynamic_string:
v = repr(v)
out.append(v)
outmsg = self.debugformat % tuple(out)
@ -183,10 +218,10 @@ class MessageParser:
error = error
def __init__(self):
self.unknown = UnknownFormat()
self.enumerations = {}
self.command_ids = []
self.messages_by_id = {}
self.messages_by_name = {}
self.static_strings = {}
self.config = {}
self.version = self.build_versions = ""
self.raw_identify_data = ""
@ -239,9 +274,6 @@ class MessageParser:
if pos != len(s)-MESSAGE_TRAILER_SIZE:
raise error("Extra data at end of message")
params['#name'] = mid.name
static_string_id = params.get('static_string_id')
if static_string_id is not None:
params['#msg'] = self.static_strings.get(static_string_id, "?")
return params
def encode(self, seq, cmd):
msglen = MESSAGE_MIN + len(cmd)
@ -282,27 +314,47 @@ class MessageParser:
argparts = dict(arg.split('=', 1) for arg in parts[1:])
for name, value in argparts.items():
t = mp.name_to_type[name]
if t.is_int:
if t.is_dynamic_string:
tval = self._parse_buffer(value)
elif t.is_int:
tval = int(value, 0)
else:
tval = self._parse_buffer(value)
tval = value
argparts[name] = tval
except:
#traceback.print_exc()
#logging.exception("Unable to extract params")
raise error("Unable to extract params from: %s" % (msgname,))
try:
cmd = mp.encode_by_name(**argparts)
except:
#traceback.print_exc()
#logging.exception("Unable to encode")
raise error("Unable to encode: %s" % (msgname,))
return cmd
def _fill_enumerations(self, enumerations):
for add_name, add_enums in enumerations.items():
enums = self.enumerations.setdefault(add_name, {})
for enum, value in add_enums.items():
if type(value) == type(0):
# Simple enumeration
enums[str(enum)] = value
continue
# Enumeration range
enum = enum_root = str(enum)
while enum_root and enum_root[-1].isdigit():
enum_root = enum_root[:-1]
start_enum = 0
if len(enum_root) != len(enum):
start_enum = int(enum[len(enum_root):])
start_value, count = value
for i in range(count):
enums[enum_root + str(start_enum + i)] = start_value + i
def _init_messages(self, messages, output_ids=[]):
for msgformat, msgid in messages.items():
msgid = int(msgid)
if msgid in output_ids:
self.messages_by_id[msgid] = OutputFormat(msgid, msgformat)
continue
msg = MessageFormat(msgid, msgformat)
msg = MessageFormat(msgid, msgformat, self.enumerations)
self.messages_by_id[msgid] = msg
self.messages_by_name[msg.name] = msg
def process_identify(self, data, decompress=True):
@ -311,6 +363,7 @@ class MessageParser:
data = zlib.decompress(data)
self.raw_identify_data = data
data = json.loads(data)
self._fill_enumerations(data.get('enumerations', {}))
commands = data.get('commands')
responses = data.get('responses')
output = data.get('output', {})
@ -319,8 +372,6 @@ class MessageParser:
all_messages.update(output)
self.command_ids = sorted(commands.values())
self._init_messages(all_messages, output.values())
static_strings = data.get('static_strings', {})
self.static_strings = {int(k): v for k, v in static_strings.items()}
self.config.update(data.get('config', {}))
self.version = data.get('version', '')
self.build_versions = data.get('build_versions', '')

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@ -31,7 +31,6 @@ class SerialReader:
# Message handlers
handlers = {
'#unknown': self.handle_unknown, '#output': self.handle_output,
'shutdown': self.handle_output, 'is_shutdown': self.handle_output
}
self.handlers = { (k, None): v for k, v in handlers.items() }
def _bg_thread(self):

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@ -60,25 +60,45 @@ Handlers.append(HandleCallList())
######################################################################
# Static string generation
# Enumeration and static string generation
######################################################################
STATIC_STRING_MIN = 2
# Generate a dynamic string to integer mapping
class HandleStaticStrings:
class HandleEnumerations:
def __init__(self):
self.static_strings = []
self.found_strings = {}
self.ctr_dispatch = { '_DECL_STATIC_STR': self.decl_static_str }
self.enumerations = {}
self.ctr_dispatch = {
'_DECL_STATIC_STR': self.decl_static_str,
'_DECL_ENUMERATION': self.decl_enumeration,
'_DECL_ENUMERATION_RANGE': self.decl_enumeration_range
}
def add_enumeration(self, enum, name, value):
enums = self.enumerations.setdefault(enum, {})
if name in enums and enums[name] != value:
error("Conflicting definition for enumeration '%s %s'" % (
enum, name))
enums[name] = value
def decl_enumeration(self, req):
enum, name, value = req.split()[1:]
self.add_enumeration(enum, name, decode_integer(value))
def decl_enumeration_range(self, req):
enum, name, count, value = req.split()[1:]
try:
count = int(count, 0)
except ValueError as e:
error("Invalid enumeration count in '%s'" % (req,))
self.add_enumeration(enum, name, (decode_integer(value), count))
def decl_static_str(self, req):
msg = req.split(None, 1)[1]
if msg not in self.found_strings:
self.found_strings[msg] = 1
if msg not in self.static_strings:
self.static_strings.append(msg)
def update_data_dictionary(self, data):
data['static_strings'] = { i + STATIC_STRING_MIN: s
for i, s in enumerate(self.static_strings) }
for i, s in enumerate(self.static_strings):
self.add_enumeration("static_string_id", s, i + STATIC_STRING_MIN)
data['enumerations'] = self.enumerations
def generate_code(self, options):
code = []
for i, s in enumerate(self.static_strings):
@ -94,7 +114,7 @@ ctr_lookup_static_string(const char *str)
"""
return fmt % ("".join(code).strip(),)
Handlers.append(HandleStaticStrings())
Handlers.append(HandleEnumerations())
######################################################################

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@ -21,6 +21,13 @@
#define DECL_CONSTANT_STR(NAME, VALUE) \
DECL_CTR("_DECL_CONSTANT_STR " NAME " " VALUE)
// Declare an enumeration
#define DECL_ENUMERATION(ENUM, NAME, VALUE) \
DECL_CTR_INT("_DECL_ENUMERATION " ENUM " " NAME, (VALUE))
#define DECL_ENUMERATION_RANGE(ENUM, NAME, VALUE, COUNT) \
DECL_CTR_INT("_DECL_ENUMERATION_RANGE " ENUM " " NAME \
" " __stringify(COUNT), (VALUE))
// Send an output message (and declare a static message type for it)
#define output(FMT, args...) \
command_sendf(_DECL_OUTPUT(FMT) , ##args )