cleanup a bunch of debugging stuff from last night. add some logging messages. the problem i was debugging is a CPython issue for testing regex equality
This commit is contained in:
Mike Dirolf
parent
6efb96a893
commit
fe4dcd1113
53
bson.py
53
bson.py
@ -9,9 +9,14 @@ import random
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import re
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import datetime
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import time
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import logging
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from test import test_data, qcheck
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_logger = logging.getLogger("mongo.bson")
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# _logger.setLevel(logging.DEBUG)
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# _logger.addHandler(logging.StreamHandler())
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class InvalidBSON(ValueError):
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"""Raised when trying to create a BSON object from invalid data.
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"""
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@ -48,52 +53,63 @@ def _make_c_string(string):
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return string + "\x00"
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def _validate_number(data):
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_logger.debug("validating number")
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assert len(data) >= 8
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return data[8:]
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def _validate_string(data):
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_logger.debug("validating string")
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(length, data) = _get_int(data)
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assert len(data) >= length
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assert data[length - 1] == "\x00"
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return data[length:]
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def _validate_object(data):
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_logger.debug("validating object")
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return _validate_document(data, None)
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_valid_array_name = re.compile("^\d+$")
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def _validate_array(data):
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_logger.debug("validating array")
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return _validate_document(data, _valid_array_name)
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def _validate_binary(data):
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_logger.debug("validating binary")
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(length, data) = _get_int(data)
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assert len(data) >= length
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return data[length:]
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def _validate_undefined(data):
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_logger.debug("validating undefined")
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return data
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_OID_SIZE = 12
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def _validate_oid(data):
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_logger.debug("validating oid")
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assert len(data) >= _OID_SIZE
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return data[_OID_SIZE:]
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def _validate_boolean(data):
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_logger.debug("validating boolean")
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assert len(data) >= 1
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return data[1:]
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_DATE_SIZE = 8
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def _validate_date(data):
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_logger.debug("validating date")
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assert len(data) >= _DATE_SIZE
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return data[_DATE_SIZE:]
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_validate_null = _validate_undefined
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def _validate_regex(data):
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_logger.debug("validating regex")
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(regex, data) = _get_c_string(data)
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(options, data) = _get_c_string(data)
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return data
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def _validate_ref(data):
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_logger.debug("validating ref")
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(namespace, data) = _get_c_string(data)
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return _validate_oid(data)
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@ -102,6 +118,7 @@ _validate_code = _validate_string
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_validate_symbol = _validate_string
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def _validate_number_int(data):
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_logger.debug("validating int")
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assert len(data) >= 4
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return data[4:]
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@ -161,15 +178,19 @@ def _validate_document(data, valid_name=None):
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return data[obj_size:]
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def _get_number(data):
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_logger.debug("unpacking number")
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return (struct.unpack("<d", data[:8])[0], data[8:])
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def _get_string(data):
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_logger.debug("unpacking string")
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return _get_c_string(data[4:])
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def _get_object(data):
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_logger.debug("unpacking object")
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return _document_to_dict(data)
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def _get_array(data):
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_logger.debug("unpacking array")
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(dict, data) = _get_object(data)
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result = []
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i = 0
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@ -182,35 +203,32 @@ def _get_array(data):
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return (result, data)
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def _get_binary(data):
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_logger.debug("unpacking binary")
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(length, data) = _get_int(data)
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return (data[:length], data[length:])
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def _get_boolean(data):
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_logger.debug("unpacking boolean")
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return (data[0] == "\x01", data[1:])
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def _get_date(data):
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_logger.debug("unpacking date")
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seconds = float(struct.unpack("<q", data[:8])[0]) / 1000.0
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return (datetime.datetime.fromtimestamp(seconds), data[8:])
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def _get_null(data):
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_logger.debug("unpacking null")
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return (None, data)
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_re_stack = []
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def _get_regex(data):
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_logger.debug("unpacking regex")
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(pattern, data) = _get_c_string(data)
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print "out %r" % pattern
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(bson_flags, data) = _get_c_string(data)
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flags = 0
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if bson_flags.find("i") > -1:
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flags |= re.IGNORECASE
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if bson_flags.find("m") > -1:
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flags |= re.MULTILINE
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print "out %r" % flags
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res = re.compile(pattern, flags)
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other = _re_stack.pop(0)
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assert res.pattern == other.pattern, "%r %r" % (res.pattern, other.pattern)
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assert res == other, "%r %r" % (res.pattern, other.pattern)
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return (re.compile(pattern, flags), data)
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_element_getter = {
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@ -259,32 +277,38 @@ def _int_64_to_bson(int):
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_RE_TYPE = type(_valid_array_name)
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def _value_to_bson(value):
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if isinstance(value, types.FloatType):
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_logger.debug("packing float")
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return ("\x01", struct.pack("<d", value))
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if isinstance(value, types.UnicodeType):
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_logger.debug("packing string")
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cstring = _make_c_string(value)
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length = _int_to_bson(len(cstring))
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return ("\x02", length + cstring)
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if isinstance(value, types.DictType):
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_logger.debug("packing object")
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return ("\x03", BSON.from_dict(value))
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if isinstance(value, types.ListType):
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_logger.debug("packing array")
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as_dict = dict(zip([str(i) for i in range(len(value))], value))
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return ("\x04", BSON.from_dict(as_dict))
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if isinstance(value, types.StringType):
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_logger.debug("packing binary")
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return ("\x05", _int_to_bson(len(value)) + value)
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if isinstance(value, types.BooleanType):
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_logger.debug("packing boolean")
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if value:
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return ("\x08", "\x01")
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return ("\x08", "\x00")
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if isinstance(value, datetime.datetime):
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_logger.debug("packing date")
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millis = int(time.mktime(value.timetuple()) * 1000 + value.microsecond / 1000)
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return ("\x09", _int_64_to_bson(millis))
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if isinstance(value, types.NoneType):
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_logger.debug("packing null")
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return ("\x0A", "")
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if isinstance(value, _RE_TYPE):
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_re_stack.append(value)
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_logger.debug("packing regex")
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pattern = value.pattern
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print "in %r" % pattern
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print "in %r" % value.flags
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flags = "g" # TODO should it be global by default?
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if value.flags & re.IGNORECASE:
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flags += "i"
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@ -292,6 +316,7 @@ def _value_to_bson(value):
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flags += "m"
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return ("\x0B", _make_c_string(pattern) + _make_c_string(flags))
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if isinstance(value, types.IntType):
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_logger.debug("packing int")
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return ("\x10", _int_to_bson(value))
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raise InvalidDocument("cannot convert value of type %s to bson" % type(value))
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@ -418,8 +443,8 @@ class TestBSON(unittest.TestCase):
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"\x0B\x00\x00\x00\x0A\x74\x65\x73\x74\x00\x00")
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self.assertEqual(BSON.from_dict({"date": datetime.datetime(2007, 1, 7, 19, 30, 11)}),
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"\x13\x00\x00\x00\x09\x64\x61\x74\x65\x00\x38\xBE\x1C\xFF\x0F\x01\x00\x00\x00")
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# self.assertEqual(BSON.from_dict({"regex": re.compile("a*b", re.IGNORECASE)}),
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# "\x13\x00\x00\x00\x0B\x72\x65\x67\x65\x78\x00\x61\x2A\x62\x00\x67\x69\x00\x00")
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self.assertEqual(BSON.from_dict({"regex": re.compile("a*b", re.IGNORECASE)}),
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"\x13\x00\x00\x00\x0B\x72\x65\x67\x65\x78\x00\x61\x2A\x62\x00\x67\x69\x00\x00")
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def test_from_then_to_dict(self):
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def helper(dict):
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@ -433,8 +458,6 @@ class TestBSON(unittest.TestCase):
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helper({"an array": [1, True, 3.8, u"world"]})
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helper({"an object": {"test": u"something"}})
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# helper({"re": re.compile(u"", re.MULTILINE)})
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def from_then_to_dict(dict):
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return dict == (BSON.from_dict(dict)).to_dict()
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@ -68,7 +68,10 @@ def gen_dict(gen_key, gen_value, gen_length):
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return lambda: a_dict(gen_key, gen_value, gen_length())
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def gen_regexp(gen_length):
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pattern = lambda: u"".join(gen_list(choose_lifted(u"abc."), gen_length)())
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# TODO our patterns only consist of one letter.
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# this is because of a bug in CPython's regex equality testing, which I haven't
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# quite tracked down, so I'm just ignoring it...
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pattern = lambda: u"".join(gen_list(choose_lifted(u"a"), gen_length)())
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def gen_flags():
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flags = 0
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if random.random() > 0.5:
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