Manually down-integrate python JSON struct support from internal code base.
diff --git a/.gitignore b/.gitignore
index 19e5212..a2d6ca9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -58,6 +58,7 @@
python/.tox
python/build/
python/google/protobuf/compiler/
+python/google/protobuf/util/
src/protoc
src/unittest_proto_middleman
diff --git a/python/google/protobuf/internal/json_format_test.py b/python/google/protobuf/internal/json_format_test.py
index be3ad11..49e96a4 100644
--- a/python/google/protobuf/internal/json_format_test.py
+++ b/python/google/protobuf/internal/json_format_test.py
@@ -42,6 +42,12 @@
import unittest2 as unittest
except ImportError:
import unittest
+from google.protobuf import any_pb2
+from google.protobuf import duration_pb2
+from google.protobuf import field_mask_pb2
+from google.protobuf import struct_pb2
+from google.protobuf import timestamp_pb2
+from google.protobuf import wrappers_pb2
from google.protobuf.internal import well_known_types
from google.protobuf import json_format
from google.protobuf.util import json_format_proto3_pb2
@@ -326,6 +332,7 @@
message.bytes_value.value = b''
message.repeated_bool_value.add().value = True
message.repeated_bool_value.add().value = False
+ message.repeated_int32_value.add()
self.assertEqual(
json.loads(json_format.MessageToJson(message, True)),
json.loads('{\n'
@@ -334,7 +341,7 @@
' "stringValue": "",'
' "bytesValue": "",'
' "repeatedBoolValue": [true, false],'
- ' "repeatedInt32Value": [],'
+ ' "repeatedInt32Value": [0],'
' "repeatedUint32Value": [],'
' "repeatedFloatValue": [],'
' "repeatedDoubleValue": [],'
@@ -346,11 +353,192 @@
parsed_message = json_format_proto3_pb2.TestWrapper()
self.CheckParseBack(message, parsed_message)
+ def testStructMessage(self):
+ message = json_format_proto3_pb2.TestStruct()
+ message.value['name'] = 'Jim'
+ message.value['age'] = 10
+ message.value['attend'] = True
+ message.value['email'] = None
+ message.value.get_or_create_struct('address')['city'] = 'SFO'
+ message.value['address']['house_number'] = 1024
+ struct_list = message.value.get_or_create_list('list')
+ struct_list.extend([6, 'seven', True, False, None])
+ struct_list.add_struct()['subkey2'] = 9
+ message.repeated_value.add()['age'] = 11
+ message.repeated_value.add()
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, False)),
+ json.loads(
+ '{'
+ ' "value": {'
+ ' "address": {'
+ ' "city": "SFO", '
+ ' "house_number": 1024'
+ ' }, '
+ ' "age": 10, '
+ ' "name": "Jim", '
+ ' "attend": true, '
+ ' "email": null, '
+ ' "list": [6, "seven", true, false, null, {"subkey2": 9}]'
+ ' },'
+ ' "repeatedValue": [{"age": 11}, {}]'
+ '}'))
+ parsed_message = json_format_proto3_pb2.TestStruct()
+ self.CheckParseBack(message, parsed_message)
+
+ def testValueMessage(self):
+ message = json_format_proto3_pb2.TestValue()
+ message.value.string_value = 'hello'
+ message.repeated_value.add().number_value = 11.1
+ message.repeated_value.add().bool_value = False
+ message.repeated_value.add().null_value = 0
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, False)),
+ json.loads(
+ '{'
+ ' "value": "hello",'
+ ' "repeatedValue": [11.1, false, null]'
+ '}'))
+ parsed_message = json_format_proto3_pb2.TestValue()
+ self.CheckParseBack(message, parsed_message)
+ # Can't parse back if the Value message is not set.
+ message.repeated_value.add()
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, False)),
+ json.loads(
+ '{'
+ ' "value": "hello",'
+ ' "repeatedValue": [11.1, false, null, null]'
+ '}'))
+
+ def testListValueMessage(self):
+ message = json_format_proto3_pb2.TestListValue()
+ message.value.values.add().number_value = 11.1
+ message.value.values.add().null_value = 0
+ message.value.values.add().bool_value = True
+ message.value.values.add().string_value = 'hello'
+ message.value.values.add().struct_value['name'] = 'Jim'
+ message.repeated_value.add().values.add().number_value = 1
+ message.repeated_value.add()
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, False)),
+ json.loads(
+ '{"value": [11.1, null, true, "hello", {"name": "Jim"}]\n,'
+ '"repeatedValue": [[1], []]}'))
+ parsed_message = json_format_proto3_pb2.TestListValue()
+ self.CheckParseBack(message, parsed_message)
+
+ def testAnyMessage(self):
+ message = json_format_proto3_pb2.TestAny()
+ value1 = json_format_proto3_pb2.MessageType()
+ value2 = json_format_proto3_pb2.MessageType()
+ value1.value = 1234
+ value2.value = 5678
+ message.value.Pack(value1)
+ message.repeated_value.add().Pack(value1)
+ message.repeated_value.add().Pack(value2)
+ message.repeated_value.add()
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "repeatedValue": [ {\n'
+ ' "@type": "type.googleapis.com/proto3.MessageType",\n'
+ ' "value": 1234\n'
+ ' }, {\n'
+ ' "@type": "type.googleapis.com/proto3.MessageType",\n'
+ ' "value": 5678\n'
+ ' },\n'
+ ' {}],\n'
+ ' "value": {\n'
+ ' "@type": "type.googleapis.com/proto3.MessageType",\n'
+ ' "value": 1234\n'
+ ' }\n'
+ '}\n'))
+ parsed_message = json_format_proto3_pb2.TestAny()
+ self.CheckParseBack(message, parsed_message)
+
+ def testWellKnownInAnyMessage(self):
+ message = any_pb2.Any()
+ int32_value = wrappers_pb2.Int32Value()
+ int32_value.value = 1234
+ message.Pack(int32_value)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": \"type.googleapis.com/google.protobuf.Int32Value\",\n'
+ ' "value": 1234\n'
+ '}\n'))
+ parsed_message = any_pb2.Any()
+ self.CheckParseBack(message, parsed_message)
+
+ timestamp = timestamp_pb2.Timestamp()
+ message.Pack(timestamp)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": "type.googleapis.com/google.protobuf.Timestamp",\n'
+ ' "value": "1970-01-01T00:00:00Z"\n'
+ '}\n'))
+ self.CheckParseBack(message, parsed_message)
+
+ duration = duration_pb2.Duration()
+ duration.seconds = 1
+ message.Pack(duration)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": "type.googleapis.com/google.protobuf.Duration",\n'
+ ' "value": "1s"\n'
+ '}\n'))
+ self.CheckParseBack(message, parsed_message)
+
+ field_mask = field_mask_pb2.FieldMask()
+ field_mask.paths.append('foo.bar')
+ field_mask.paths.append('bar')
+ message.Pack(field_mask)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": "type.googleapis.com/google.protobuf.FieldMask",\n'
+ ' "value": "foo.bar,bar"\n'
+ '}\n'))
+ self.CheckParseBack(message, parsed_message)
+
+ struct_message = struct_pb2.Struct()
+ struct_message['name'] = 'Jim'
+ message.Pack(struct_message)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": "type.googleapis.com/google.protobuf.Struct",\n'
+ ' "value": {"name": "Jim"}\n'
+ '}\n'))
+ self.CheckParseBack(message, parsed_message)
+
+ nested_any = any_pb2.Any()
+ int32_value.value = 5678
+ nested_any.Pack(int32_value)
+ message.Pack(nested_any)
+ self.assertEqual(
+ json.loads(json_format.MessageToJson(message, True)),
+ json.loads(
+ '{\n'
+ ' "@type": "type.googleapis.com/google.protobuf.Any",\n'
+ ' "value": {\n'
+ ' "@type": "type.googleapis.com/google.protobuf.Int32Value",\n'
+ ' "value": 5678\n'
+ ' }\n'
+ '}\n'))
+ self.CheckParseBack(message, parsed_message)
+
def testParseNull(self):
message = json_format_proto3_pb2.TestMessage()
- message.repeated_int32_value.append(1)
- message.repeated_int32_value.append(2)
- message.repeated_int32_value.append(3)
parsed_message = json_format_proto3_pb2.TestMessage()
self.FillAllFields(parsed_message)
json_format.Parse('{"int32Value": null, '
@@ -364,7 +552,7 @@
'"bytesValue": null,'
'"messageValue": null,'
'"enumValue": null,'
- '"repeatedInt32Value": [1, 2, null, 3],'
+ '"repeatedInt32Value": null,'
'"repeatedInt64Value": null,'
'"repeatedUint32Value": null,'
'"repeatedUint64Value": null,'
@@ -378,6 +566,13 @@
'}',
parsed_message)
self.assertEqual(message, parsed_message)
+ self.assertRaisesRegexp(
+ json_format.ParseError,
+ 'Failed to parse repeatedInt32Value field: '
+ 'null is not allowed to be used as an element in a repeated field.',
+ json_format.Parse,
+ '{"repeatedInt32Value":[1, null]}',
+ parsed_message)
def testNanFloat(self):
message = json_format_proto3_pb2.TestMessage()
@@ -529,6 +724,45 @@
' should not have multiple "oneof_value" oneof fields.',
json_format.Parse, text, message)
+ def testInvalidListValue(self):
+ message = json_format_proto3_pb2.TestListValue()
+ text = '{"value": 1234}'
+ self.assertRaisesRegexp(
+ json_format.ParseError,
+ r'Failed to parse value field: ListValue must be in \[\] which is 1234',
+ json_format.Parse, text, message)
+
+ def testInvalidStruct(self):
+ message = json_format_proto3_pb2.TestStruct()
+ text = '{"value": 1234}'
+ self.assertRaisesRegexp(
+ json_format.ParseError,
+ 'Failed to parse value field: Struct must be in a dict which is 1234',
+ json_format.Parse, text, message)
+
+ def testInvalidAny(self):
+ message = any_pb2.Any()
+ text = '{"@type": "type.googleapis.com/google.protobuf.Int32Value"}'
+ self.assertRaisesRegexp(
+ KeyError,
+ 'value',
+ json_format.Parse, text, message)
+ text = '{"value": 1234}'
+ self.assertRaisesRegexp(
+ json_format.ParseError,
+ '@type is missing when parsing any message.',
+ json_format.Parse, text, message)
+ text = '{"@type": "type.googleapis.com/MessageNotExist", "value": 1234}'
+ self.assertRaisesRegexp(
+ TypeError,
+ 'Can not find message descriptor by type_url: '
+ 'type.googleapis.com/MessageNotExist.',
+ json_format.Parse, text, message)
+ # Only last part is to be used.
+ text = (r'{"@type": "incorrect.googleapis.com/google.protobuf.Int32Value",'
+ r'"value": 1234}')
+ json_format.Parse(text, message)
+
if __name__ == '__main__':
unittest.main()
diff --git a/python/google/protobuf/internal/well_known_types.py b/python/google/protobuf/internal/well_known_types.py
index d3de983..d35fcc5 100644
--- a/python/google/protobuf/internal/well_known_types.py
+++ b/python/google/protobuf/internal/well_known_types.py
@@ -34,6 +34,7 @@
- Any
- Duration
- FieldMask
+ - Struct
- Timestamp
"""
@@ -41,6 +42,7 @@
from datetime import datetime
from datetime import timedelta
+import six
from google.protobuf.descriptor import FieldDescriptor
@@ -64,9 +66,12 @@
class Any(object):
"""Class for Any Message type."""
- def Pack(self, msg):
+ def Pack(self, msg, type_url_prefix='type.googleapis.com/'):
"""Packs the specified message into current Any message."""
- self.type_url = 'type.googleapis.com/%s' % msg.DESCRIPTOR.full_name
+ if len(type_url_prefix) < 1 or type_url_prefix[-1] != '/':
+ self.type_url = '%s/%s' % (type_url_prefix, msg.DESCRIPTOR.full_name)
+ else:
+ self.type_url = '%s%s' % (type_url_prefix, msg.DESCRIPTOR.full_name)
self.value = msg.SerializeToString()
def Unpack(self, msg):
@@ -614,9 +619,102 @@
_AddFieldPaths(node[name], child_path, field_mask)
+_INT_OR_FLOAT = six.integer_types + (float,)
+
+
+def _SetStructValue(struct_value, value):
+ if value is None:
+ struct_value.null_value = 0
+ elif isinstance(value, bool):
+ # Note: this check must come before the number check because in Python
+ # True and False are also considered numbers.
+ struct_value.bool_value = value
+ elif isinstance(value, six.string_types):
+ struct_value.string_value = value
+ elif isinstance(value, _INT_OR_FLOAT):
+ struct_value.number_value = value
+ else:
+ raise ValueError('Unexpected type')
+
+
+def _GetStructValue(struct_value):
+ which = struct_value.WhichOneof('kind')
+ if which == 'struct_value':
+ return struct_value.struct_value
+ elif which == 'null_value':
+ return None
+ elif which == 'number_value':
+ return struct_value.number_value
+ elif which == 'string_value':
+ return struct_value.string_value
+ elif which == 'bool_value':
+ return struct_value.bool_value
+ elif which == 'list_value':
+ return struct_value.list_value
+ elif which is None:
+ raise ValueError('Value not set')
+
+
+class Struct(object):
+ """Class for Struct message type."""
+
+ __slots__ = []
+
+ def __getitem__(self, key):
+ return _GetStructValue(self.fields[key])
+
+ def __setitem__(self, key, value):
+ _SetStructValue(self.fields[key], value)
+
+ def get_or_create_list(self, key):
+ """Returns a list for this key, creating if it didn't exist already."""
+ return self.fields[key].list_value
+
+ def get_or_create_struct(self, key):
+ """Returns a struct for this key, creating if it didn't exist already."""
+ return self.fields[key].struct_value
+
+ # TODO(haberman): allow constructing/merging from dict.
+
+
+class ListValue(object):
+ """Class for ListValue message type."""
+
+ def __len__(self):
+ return len(self.values)
+
+ def append(self, value):
+ _SetStructValue(self.values.add(), value)
+
+ def extend(self, elem_seq):
+ for value in elem_seq:
+ self.append(value)
+
+ def __getitem__(self, index):
+ """Retrieves item by the specified index."""
+ return _GetStructValue(self.values.__getitem__(index))
+
+ def __setitem__(self, index, value):
+ _SetStructValue(self.values.__getitem__(index), value)
+
+ def items(self):
+ for i in range(len(self)):
+ yield self[i]
+
+ def add_struct(self):
+ """Appends and returns a struct value as the next value in the list."""
+ return self.values.add().struct_value
+
+ def add_list(self):
+ """Appends and returns a list value as the next value in the list."""
+ return self.values.add().list_value
+
+
WKTBASES = {
'google.protobuf.Any': Any,
'google.protobuf.Duration': Duration,
'google.protobuf.FieldMask': FieldMask,
+ 'google.protobuf.ListValue': ListValue,
+ 'google.protobuf.Struct': Struct,
'google.protobuf.Timestamp': Timestamp,
}
diff --git a/python/google/protobuf/internal/well_known_types_test.py b/python/google/protobuf/internal/well_known_types_test.py
index 0e31e6f..6acbee2 100644
--- a/python/google/protobuf/internal/well_known_types_test.py
+++ b/python/google/protobuf/internal/well_known_types_test.py
@@ -41,13 +41,17 @@
except ImportError:
import unittest
+from google.protobuf import any_pb2
from google.protobuf import duration_pb2
from google.protobuf import field_mask_pb2
+from google.protobuf import struct_pb2
from google.protobuf import timestamp_pb2
from google.protobuf import unittest_pb2
+from google.protobuf.internal import any_test_pb2
from google.protobuf.internal import test_util
from google.protobuf.internal import well_known_types
from google.protobuf import descriptor
+from google.protobuf import text_format
class TimeUtilTestBase(unittest.TestCase):
@@ -509,5 +513,124 @@
self.assertEqual(1, len(nested_dst.payload.repeated_int32))
self.assertEqual(1234, nested_dst.payload.repeated_int32[0])
+
+class StructTest(unittest.TestCase):
+
+ def testStruct(self):
+ struct = struct_pb2.Struct()
+ struct_class = struct.__class__
+
+ struct['key1'] = 5
+ struct['key2'] = 'abc'
+ struct['key3'] = True
+ struct.get_or_create_struct('key4')['subkey'] = 11.0
+ struct_list = struct.get_or_create_list('key5')
+ struct_list.extend([6, 'seven', True, False, None])
+ struct_list.add_struct()['subkey2'] = 9
+
+ self.assertTrue(isinstance(struct, well_known_types.Struct))
+ self.assertEquals(5, struct['key1'])
+ self.assertEquals('abc', struct['key2'])
+ self.assertIs(True, struct['key3'])
+ self.assertEquals(11, struct['key4']['subkey'])
+ inner_struct = struct_class()
+ inner_struct['subkey2'] = 9
+ self.assertEquals([6, 'seven', True, False, None, inner_struct],
+ list(struct['key5'].items()))
+
+ serialized = struct.SerializeToString()
+
+ struct2 = struct_pb2.Struct()
+ struct2.ParseFromString(serialized)
+
+ self.assertEquals(struct, struct2)
+
+ self.assertTrue(isinstance(struct2, well_known_types.Struct))
+ self.assertEquals(5, struct2['key1'])
+ self.assertEquals('abc', struct2['key2'])
+ self.assertIs(True, struct2['key3'])
+ self.assertEquals(11, struct2['key4']['subkey'])
+ self.assertEquals([6, 'seven', True, False, None, inner_struct],
+ list(struct2['key5'].items()))
+
+ struct_list = struct2['key5']
+ self.assertEquals(6, struct_list[0])
+ self.assertEquals('seven', struct_list[1])
+ self.assertEquals(True, struct_list[2])
+ self.assertEquals(False, struct_list[3])
+ self.assertEquals(None, struct_list[4])
+ self.assertEquals(inner_struct, struct_list[5])
+
+ struct_list[1] = 7
+ self.assertEquals(7, struct_list[1])
+
+ struct_list.add_list().extend([1, 'two', True, False, None])
+ self.assertEquals([1, 'two', True, False, None],
+ list(struct_list[6].items()))
+
+ text_serialized = str(struct)
+ struct3 = struct_pb2.Struct()
+ text_format.Merge(text_serialized, struct3)
+ self.assertEquals(struct, struct3)
+
+ struct.get_or_create_struct('key3')['replace'] = 12
+ self.assertEquals(12, struct['key3']['replace'])
+
+
+class AnyTest(unittest.TestCase):
+
+ def testAnyMessage(self):
+ # Creates and sets message.
+ msg = any_test_pb2.TestAny()
+ msg_descriptor = msg.DESCRIPTOR
+ all_types = unittest_pb2.TestAllTypes()
+ all_descriptor = all_types.DESCRIPTOR
+ all_types.repeated_string.append(u'\u00fc\ua71f')
+ # Packs to Any.
+ msg.value.Pack(all_types)
+ self.assertEqual(msg.value.type_url,
+ 'type.googleapis.com/%s' % all_descriptor.full_name)
+ self.assertEqual(msg.value.value,
+ all_types.SerializeToString())
+ # Tests Is() method.
+ self.assertTrue(msg.value.Is(all_descriptor))
+ self.assertFalse(msg.value.Is(msg_descriptor))
+ # Unpacks Any.
+ unpacked_message = unittest_pb2.TestAllTypes()
+ self.assertTrue(msg.value.Unpack(unpacked_message))
+ self.assertEqual(all_types, unpacked_message)
+ # Unpacks to different type.
+ self.assertFalse(msg.value.Unpack(msg))
+ # Only Any messages have Pack method.
+ try:
+ msg.Pack(all_types)
+ except AttributeError:
+ pass
+ else:
+ raise AttributeError('%s should not have Pack method.' %
+ msg_descriptor.full_name)
+
+ def testPackWithCustomTypeUrl(self):
+ submessage = any_test_pb2.TestAny()
+ submessage.int_value = 12345
+ msg = any_pb2.Any()
+ # Pack with a custom type URL prefix.
+ msg.Pack(submessage, 'type.myservice.com')
+ self.assertEqual(msg.type_url,
+ 'type.myservice.com/%s' % submessage.DESCRIPTOR.full_name)
+ # Pack with a custom type URL prefix ending with '/'.
+ msg.Pack(submessage, 'type.myservice.com/')
+ self.assertEqual(msg.type_url,
+ 'type.myservice.com/%s' % submessage.DESCRIPTOR.full_name)
+ # Pack with an empty type URL prefix.
+ msg.Pack(submessage, '')
+ self.assertEqual(msg.type_url,
+ '/%s' % submessage.DESCRIPTOR.full_name)
+ # Test unpacking the type.
+ unpacked_message = any_test_pb2.TestAny()
+ self.assertTrue(msg.Unpack(unpacked_message))
+ self.assertEqual(submessage, unpacked_message)
+
+
if __name__ == '__main__':
unittest.main()
diff --git a/python/google/protobuf/json_format.py b/python/google/protobuf/json_format.py
index cb76e11..23382bd 100644
--- a/python/google/protobuf/json_format.py
+++ b/python/google/protobuf/json_format.py
@@ -45,10 +45,11 @@
import base64
import json
import math
-from six import text_type
+import six
import sys
from google.protobuf import descriptor
+from google.protobuf import symbol_database
_TIMESTAMPFOMAT = '%Y-%m-%dT%H:%M:%S'
_INT_TYPES = frozenset([descriptor.FieldDescriptor.CPPTYPE_INT32,
@@ -96,11 +97,15 @@
def _MessageToJsonObject(message, including_default_value_fields):
"""Converts message to an object according to Proto3 JSON Specification."""
message_descriptor = message.DESCRIPTOR
- if hasattr(message, 'ToJsonString'):
- return message.ToJsonString()
+ full_name = message_descriptor.full_name
if _IsWrapperMessage(message_descriptor):
return _WrapperMessageToJsonObject(message)
- return _RegularMessageToJsonObject(message, including_default_value_fields)
+ if full_name in _WKTJSONMETHODS:
+ return _WKTJSONMETHODS[full_name][0](
+ message, including_default_value_fields)
+ js = {}
+ return _RegularMessageToJsonObject(
+ message, js, including_default_value_fields)
def _IsMapEntry(field):
@@ -109,9 +114,8 @@
field.message_type.GetOptions().map_entry)
-def _RegularMessageToJsonObject(message, including_default_value_fields):
+def _RegularMessageToJsonObject(message, js, including_default_value_fields):
"""Converts normal message according to Proto3 JSON Specification."""
- js = {}
fields = message.ListFields()
include_default = including_default_value_fields
@@ -200,6 +204,79 @@
return value
+def _AnyMessageToJsonObject(message, including_default):
+ """Converts Any message according to Proto3 JSON Specification."""
+ if not message.ListFields():
+ return {}
+ js = {}
+ type_url = message.type_url
+ js['@type'] = type_url
+ sub_message = _CreateMessageFromTypeUrl(type_url)
+ sub_message.ParseFromString(message.value)
+ message_descriptor = sub_message.DESCRIPTOR
+ full_name = message_descriptor.full_name
+ if _IsWrapperMessage(message_descriptor):
+ js['value'] = _WrapperMessageToJsonObject(sub_message)
+ return js
+ if full_name in _WKTJSONMETHODS:
+ js['value'] = _WKTJSONMETHODS[full_name][0](sub_message, including_default)
+ return js
+ return _RegularMessageToJsonObject(sub_message, js, including_default)
+
+
+def _CreateMessageFromTypeUrl(type_url):
+ # TODO(jieluo): Should add a way that users can register the type resolver
+ # instead of the default one.
+ db = symbol_database.Default()
+ type_name = type_url.split('/')[-1]
+ try:
+ message_descriptor = db.pool.FindMessageTypeByName(type_name)
+ except KeyError:
+ raise TypeError(
+ 'Can not find message descriptor by type_url: {0}.'.format(type_url))
+ message_class = db.GetPrototype(message_descriptor)
+ return message_class()
+
+
+def _GenericMessageToJsonObject(message, unused_including_default):
+ """Converts message by ToJsonString according to Proto3 JSON Specification."""
+ # Duration, Timestamp and FieldMask have ToJsonString method to do the
+ # convert. Users can also call the method directly.
+ return message.ToJsonString()
+
+
+def _ValueMessageToJsonObject(message, unused_including_default=False):
+ """Converts Value message according to Proto3 JSON Specification."""
+ which = message.WhichOneof('kind')
+ # If the Value message is not set treat as null_value when serialize
+ # to JSON. The parse back result will be different from original message.
+ if which is None or which == 'null_value':
+ return None
+ if which == 'list_value':
+ return _ListValueMessageToJsonObject(message.list_value)
+ if which == 'struct_value':
+ value = message.struct_value
+ else:
+ value = getattr(message, which)
+ oneof_descriptor = message.DESCRIPTOR.fields_by_name[which]
+ return _FieldToJsonObject(oneof_descriptor, value)
+
+
+def _ListValueMessageToJsonObject(message, unused_including_default=False):
+ """Converts ListValue message according to Proto3 JSON Specification."""
+ return [_ValueMessageToJsonObject(value)
+ for value in message.values]
+
+
+def _StructMessageToJsonObject(message, unused_including_default=False):
+ """Converts Struct message according to Proto3 JSON Specification."""
+ fields = message.fields
+ js = {}
+ for key in fields.keys():
+ js[key] = _ValueMessageToJsonObject(fields[key])
+ return js
+
+
def _IsWrapperMessage(message_descriptor):
return message_descriptor.file.name == 'google/protobuf/wrappers.proto'
@@ -231,7 +308,7 @@
Raises::
ParseError: On JSON parsing problems.
"""
- if not isinstance(text, text_type): text = text.decode('utf-8')
+ if not isinstance(text, six.text_type): text = text.decode('utf-8')
try:
if sys.version_info < (2, 7):
# object_pair_hook is not supported before python2.7
@@ -240,7 +317,7 @@
js = json.loads(text, object_pairs_hook=_DuplicateChecker)
except ValueError as e:
raise ParseError('Failed to load JSON: {0}.'.format(str(e)))
- _ConvertFieldValuePair(js, message)
+ _ConvertMessage(js, message)
return message
@@ -291,13 +368,22 @@
if not isinstance(value, list):
raise ParseError('repeated field {0} must be in [] which is '
'{1}.'.format(name, value))
- for item in value:
- if item is None:
- continue
- if field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
+ if field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
+ # Repeated message field.
+ for item in value:
sub_message = getattr(message, field.name).add()
+ # None is a null_value in Value.
+ if (item is None and
+ sub_message.DESCRIPTOR.full_name != 'google.protobuf.Value'):
+ raise ParseError('null is not allowed to be used as an element'
+ ' in a repeated field.')
_ConvertMessage(item, sub_message)
- else:
+ else:
+ # Repeated scalar field.
+ for item in value:
+ if item is None:
+ raise ParseError('null is not allowed to be used as an element'
+ ' in a repeated field.')
getattr(message, field.name).append(
_ConvertScalarFieldValue(item, field))
elif field.cpp_type == descriptor.FieldDescriptor.CPPTYPE_MESSAGE:
@@ -327,13 +413,87 @@
ParseError: In case of convert problems.
"""
message_descriptor = message.DESCRIPTOR
- if hasattr(message, 'FromJsonString'):
- message.FromJsonString(value)
- elif _IsWrapperMessage(message_descriptor):
+ full_name = message_descriptor.full_name
+ if _IsWrapperMessage(message_descriptor):
_ConvertWrapperMessage(value, message)
+ elif full_name in _WKTJSONMETHODS:
+ _WKTJSONMETHODS[full_name][1](value, message)
else:
_ConvertFieldValuePair(value, message)
+
+def _ConvertAnyMessage(value, message):
+ """Convert a JSON representation into Any message."""
+ if isinstance(value, dict) and not value:
+ return
+ try:
+ type_url = value['@type']
+ except KeyError:
+ raise ParseError('@type is missing when parsing any message.')
+
+ sub_message = _CreateMessageFromTypeUrl(type_url)
+ message_descriptor = sub_message.DESCRIPTOR
+ full_name = message_descriptor.full_name
+ if _IsWrapperMessage(message_descriptor):
+ _ConvertWrapperMessage(value['value'], sub_message)
+ elif full_name in _WKTJSONMETHODS:
+ _WKTJSONMETHODS[full_name][1](value['value'], sub_message)
+ else:
+ del value['@type']
+ _ConvertFieldValuePair(value, sub_message)
+ # Sets Any message
+ message.value = sub_message.SerializeToString()
+ message.type_url = type_url
+
+
+def _ConvertGenericMessage(value, message):
+ """Convert a JSON representation into message with FromJsonString."""
+ # Durantion, Timestamp, FieldMask have FromJsonString method to do the
+ # convert. Users can also call the method directly.
+ message.FromJsonString(value)
+
+
+_INT_OR_FLOAT = six.integer_types + (float,)
+
+
+def _ConvertValueMessage(value, message):
+ """Convert a JSON representation into Value message."""
+ if isinstance(value, dict):
+ _ConvertStructMessage(value, message.struct_value)
+ elif isinstance(value, list):
+ _ConvertListValueMessage(value, message.list_value)
+ elif value is None:
+ message.null_value = 0
+ elif isinstance(value, bool):
+ message.bool_value = value
+ elif isinstance(value, six.string_types):
+ message.string_value = value
+ elif isinstance(value, _INT_OR_FLOAT):
+ message.number_value = value
+ else:
+ raise ParseError('Unexpected type for Value message.')
+
+
+def _ConvertListValueMessage(value, message):
+ """Convert a JSON representation into ListValue message."""
+ if not isinstance(value, list):
+ raise ParseError(
+ 'ListValue must be in [] which is {0}.'.format(value))
+ message.ClearField('values')
+ for item in value:
+ _ConvertValueMessage(item, message.values.add())
+
+
+def _ConvertStructMessage(value, message):
+ """Convert a JSON representation into Struct message."""
+ if not isinstance(value, dict):
+ raise ParseError(
+ 'Struct must be in a dict which is {0}.'.format(value))
+ for key in value:
+ _ConvertValueMessage(value[key], message.fields[key])
+ return
+
+
def _ConvertWrapperMessage(value, message):
"""Convert a JSON representation into Wrapper message."""
field = message.DESCRIPTOR.fields_by_name['value']
@@ -353,7 +513,8 @@
"""
if not isinstance(value, dict):
raise ParseError(
- 'Map fieled {0} must be in {} which is {1}.'.format(field.name, value))
+ 'Map field {0} must be in a dict which is {1}.'.format(
+ field.name, value))
key_field = field.message_type.fields_by_name['key']
value_field = field.message_type.fields_by_name['value']
for key in value:
@@ -416,7 +577,7 @@
if isinstance(value, float):
raise ParseError('Couldn\'t parse integer: {0}.'.format(value))
- if isinstance(value, text_type) and value.find(' ') != -1:
+ if isinstance(value, six.text_type) and value.find(' ') != -1:
raise ParseError('Couldn\'t parse integer: "{0}".'.format(value))
return int(value)
@@ -465,3 +626,20 @@
if not isinstance(value, bool):
raise ParseError('Expected true or false without quotes.')
return value
+
+_WKTJSONMETHODS = {
+ 'google.protobuf.Any': [_AnyMessageToJsonObject,
+ _ConvertAnyMessage],
+ 'google.protobuf.Duration': [_GenericMessageToJsonObject,
+ _ConvertGenericMessage],
+ 'google.protobuf.FieldMask': [_GenericMessageToJsonObject,
+ _ConvertGenericMessage],
+ 'google.protobuf.ListValue': [_ListValueMessageToJsonObject,
+ _ConvertListValueMessage],
+ 'google.protobuf.Struct': [_StructMessageToJsonObject,
+ _ConvertStructMessage],
+ 'google.protobuf.Timestamp': [_GenericMessageToJsonObject,
+ _ConvertGenericMessage],
+ 'google.protobuf.Value': [_ValueMessageToJsonObject,
+ _ConvertValueMessage]
+}