async def is_type_of_with_async_error():
PetType = GraphQLInterfaceType("Pet", {"name": GraphQLField(GraphQLString)})
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
is_type_of=is_type_of_error,
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
is_type_of=get_is_type_of(Cat),
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(PetType),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[CatType, DogType],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
result = await graphql(schema, query)
# Note: we get two errors, because first all types are resolved
# and only then they are checked sequentially
assert result.data == {"pets": [None, None]}
assert list(map(format_error, result.errors)) == [
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 0],
},
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 1],
},
]
from pytest import raises # type: ignore
from graphql.error import GraphQLError
from graphql.language import (
parse,
DocumentNode,
OperationDefinitionNode,
OperationTypeDefinitionNode,
SchemaDefinitionNode,
)
from graphql.type import GraphQLField, GraphQLObjectType, GraphQLSchema, GraphQLString
from graphql.utilities import get_operation_root_type
query_type = GraphQLObjectType("FooQuery",
{"field": GraphQLField(GraphQLString)})
mutation_type = GraphQLObjectType("FooMutation",
{"field": GraphQLField(GraphQLString)})
subscription_type = GraphQLObjectType("FooSubscription",
{"field": GraphQLField(GraphQLString)})
def get_operation_node(doc: DocumentNode) -> OperationDefinitionNode:
operation_node = doc.definitions[0]
assert isinstance(operation_node, OperationDefinitionNode)
return operation_node
def describe_get_operation_root_type():
def gets_a_query_type_for_an_unnamed_operation_definition_node():
def resolve_type_allows_resolving_with_type_name():
PetType = GraphQLInterfaceType(
"Pet",
{"name": GraphQLField(GraphQLString)},
resolve_type=get_type_resolver({
Dog: "Dog",
Cat: "Cat"
}),
)
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(PetType),
resolve=lambda *_:
[Dog("Odie", True),
Cat("Garfield", False)],
)
},
),
types=[CatType, DogType],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}"""
result = graphql_sync(schema, query)
assert result == (
{
"pets": [
{
"name": "Odie",
"woofs": True
},
{
"name": "Garfield",
"meows": False
},
]
},
None,
)
def stringifies_fields():
assert str(GraphQLField(GraphQLNonNull(GraphQLString))) == "Field: String!"
assert str(GraphQLField(GraphQLList(GraphQLInt))) == "Field: [Int]"
async def resolve_type_on_union_yields_useful_error():
HumanType = GraphQLObjectType('Human',
{'name': GraphQLField(GraphQLString)})
DogType = GraphQLObjectType(
'Dog', {
'name': GraphQLField(GraphQLString),
'woofs': GraphQLField(GraphQLBoolean)
})
CatType = GraphQLObjectType(
'Cat', {
'name': GraphQLField(GraphQLString),
'meows': GraphQLField(GraphQLBoolean)
})
PetType = GraphQLUnionType('Pet', [DogType, CatType],
resolve_type=get_type_resolver({
Dog:
DogType,
Cat:
CatType,
Human:
HumanType
}))
schema = GraphQLSchema(
GraphQLObjectType(
'Query', {
'pets':
GraphQLField(GraphQLList(PetType),
resolve=lambda *_: [
Dog('Odie', True),
Cat('Garfield', False),
Human('Jon')
])
}))
query = """
{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
meows
}
}
}
"""
result = await graphql(schema, query)
assert result.data == {
'pets': [{
'name': 'Odie',
'woofs': True
}, {
'name': 'Garfield',
'meows': False
}, None]
}
assert len(result.errors) == 1
assert format_error(result.errors[0]) == {
'message': "Runtime Object type 'Human'"
" is not a possible type for 'Pet'.",
'locations': [(3, 15)],
'path': ['pets', 2]
}
def get_first(args, *keys):
for key in keys:
if key in args:
return args[key]
return None
QueryType = GraphQLObjectType(
name='Query',
fields={
'colorEnum': GraphQLField(
type=ColorType,
args={
'fromEnum': GraphQLArgument(ColorType),
'fromInt': GraphQLArgument(GraphQLInt),
'fromString': GraphQLArgument(GraphQLString)
},
resolver=lambda value, args, context, info: get_first(args, 'fromInt', 'fromString', 'fromEnum')
),
'colorInt': GraphQLField(
type=GraphQLInt,
args={
'fromEnum': GraphQLArgument(ColorType),
'fromInt': GraphQLArgument(GraphQLInt),
},
resolver=lambda value, args, context, info: get_first(args, 'fromInt', 'fromEnum')
)
}
)
def accepts_a_lambda_as_an_object_field_resolver():
obj_type = GraphQLObjectType(
"SomeObject",
{"f": GraphQLField(ScalarType, resolve=lambda _obj, _info: {})},
)
assert obj_type.fields
GraphQLInputObjectType,
GraphQLInt,
GraphQLInterfaceType,
GraphQLList,
GraphQLNonNull,
GraphQLObjectType,
GraphQLSchema,
GraphQLString,
GraphQLUnionType,
)
from graphql.type.definition import is_input_type, is_output_type
BlogImage = GraphQLObjectType(
"Image",
{
"url": GraphQLField(GraphQLString),
"width": GraphQLField(GraphQLInt),
"height": GraphQLField(GraphQLInt),
},
)
BlogAuthor = GraphQLObjectType(
"Author",
lambda: {
"id": GraphQLField(GraphQLString),
"name": GraphQLField(GraphQLString),
"pic": GraphQLField(
BlogImage,
args={
"width": GraphQLArgument(GraphQLInt),
"height": GraphQLArgument(GraphQLInt),
def test_synchronous_error_nulls_out_error_subtrees():
# type: () -> None
ast = parse("""
{
sync
syncError
syncReturnError
syncReturnErrorList
asyncBasic
asyncReject
asyncEmptyReject
asyncReturnError
}
""")
class Data:
def sync(self):
# type: () -> str
return "sync"
def syncError(self):
# type: () -> NoReturn
raise Exception("Error getting syncError")
def syncReturnError(self):
# type: () -> Exception
return Exception("Error getting syncReturnError")
def syncReturnErrorList(self):
# type: () -> List[Union[Exception, str]]
return [
"sync0",
Exception("Error getting syncReturnErrorList1"),
"sync2",
Exception("Error getting syncReturnErrorList3"),
]
def asyncBasic(self):
# type: () -> Promise
return resolved("async")
def asyncReject(self):
# type: () -> Promise
return rejected(Exception("Error getting asyncReject"))
def asyncEmptyReject(self):
# type: () -> Promise
return rejected(Exception("An unknown error occurred."))
def asyncReturnError(self):
# type: () -> Promise
return resolved(Exception("Error getting asyncReturnError"))
schema = GraphQLSchema(query=GraphQLObjectType(
name="Type",
fields={
"sync": GraphQLField(GraphQLString),
"syncError": GraphQLField(GraphQLString),
"syncReturnError": GraphQLField(GraphQLString),
"syncReturnErrorList": GraphQLField(GraphQLList(GraphQLString)),
"asyncBasic": GraphQLField(GraphQLString),
"asyncReject": GraphQLField(GraphQLString),
"asyncEmptyReject": GraphQLField(GraphQLString),
"asyncReturnError": GraphQLField(GraphQLString),
},
))
def sort_key(item):
# type: (Dict[str, Any]) -> Tuple[int, int]
locations = item["locations"][0]
return (locations["line"], locations["column"])
def handle_results(result):
# type: (ExecutionResult) -> None
assert result.data == {
"asyncBasic": "async",
"asyncEmptyReject": None,
"asyncReject": None,
"asyncReturnError": None,
"sync": "sync",
"syncError": None,
"syncReturnError": None,
"syncReturnErrorList": ["sync0", None, "sync2", None],
}
assert sorted(list(map(
format_error, result.errors)), key=sort_key) == sorted(
[
{
"locations": [{
"line": 4,
"column": 9
}],
"path": ["syncError"],
"message": "Error getting syncError",
},
{
"locations": [{
"line": 5,
"column": 9
}],
"path": ["syncReturnError"],
"message": "Error getting syncReturnError",
},
{
"locations": [{
"line": 6,
"column": 9
}],
"path": ["syncReturnErrorList", 1],
"message": "Error getting syncReturnErrorList1",
},
{
"locations": [{
"line": 6,
"column": 9
}],
"path": ["syncReturnErrorList", 3],
"message": "Error getting syncReturnErrorList3",
},
{
"locations": [{
"line": 8,
"column": 9
}],
"path": ["asyncReject"],
"message": "Error getting asyncReject",
},
{
"locations": [{
"line": 9,
"column": 9
}],
"path": ["asyncEmptyReject"],
"message": "An unknown error occurred.",
},
{
"locations": [{
"line": 10,
"column": 9
}],
"path": ["asyncReturnError"],
"message": "Error getting asyncReturnError",
},
],
key=sort_key,
)
handle_results(execute(schema, ast, Data(), executor=ThreadExecutor()))
pets: Optional[List[Union[Dog, Cat]]]
friends: Optional[List[Union[Dog, Cat, "Person"]]]
def __init__(
self,
name: str,
pets: Optional[List[Union[Dog, Cat]]] = None,
friends: Optional[List[Union[Dog, Cat, "Person"]]] = None,
):
self.name = name
self.pets = pets
self.friends = friends
NamedType = GraphQLInterfaceType("Named",
{"name": GraphQLField(GraphQLString)})
LifeType = GraphQLInterfaceType(
"Life",
lambda: {"progeny": GraphQLField(GraphQLList(LifeType))} # type: ignore
)
MammalType = GraphQLInterfaceType(
"Mammal",
lambda: {
"progeny": GraphQLField(GraphQLList(MammalType)), # type: ignore
"mother": GraphQLField(MammalType), # type: ignore
"father": GraphQLField(MammalType), # type: ignore
},
interfaces=[LifeType],
)
GraphQLString,
GraphQLUnionType,
)
from graphql.type.directives import (
DirectiveLocation,
GraphQLDirective,
GraphQLIncludeDirective,
GraphQLSkipDirective,
)
from graphql.validation import validate
Being = GraphQLInterfaceType(
"Being",
{
"name":
GraphQLField(GraphQLString,
{"surname": GraphQLArgument(GraphQLBoolean)})
},
)
Pet = GraphQLInterfaceType(
"Pet",
{
"name":
GraphQLField(GraphQLString,
{"surname": GraphQLArgument(GraphQLBoolean)})
},
)
Canine = GraphQLInterfaceType(
"Canine",
{
GraphQLScalarType,
)
from graphql.type.directives import (
DirectiveLocation,
GraphQLDirective,
GraphQLIncludeDirective,
GraphQLSkipDirective,
)
from graphql.validation import ValidationRule, SDLValidationRule
from graphql.validation.validate import validate, validate_sdl
Being = GraphQLInterfaceType(
"Being",
{
"name":
GraphQLField(GraphQLString,
{"surname": GraphQLArgument(GraphQLBoolean)})
},
)
Mammal = GraphQLInterfaceType(
"Mammal",
lambda: {
"mother": GraphQLField(Mammal), # type: ignore
"father": GraphQLField(Mammal), # type: ignore
},
interfaces=[],
)
Pet = GraphQLInterfaceType(
"Pet",
{
async def resolve_type_can_be_caught():
PetType = GraphQLInterfaceType(
"Pet", {"name": GraphQLField(GraphQLString)}, resolve_type=is_type_of_error
)
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(PetType),
resolve=lambda *_: [Dog("Odie", True), Cat("Garfield", False)],
)
},
),
types=[CatType, DogType],
)
query = """{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}"""
result = await graphql(schema, query)
assert result == (
{"pets": [None, None]},
[
{
"message": "We are testing this error",
"locations": [(2, 11)],
"path": ["pets", 0],
},
{
"message": "We are testing this error",
"locations": [(2, 11)],
"path": ["pets", 1],
},
],
)
async def is_type_of_used_to_resolve_runtime_type_for_union():
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Dog),
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Cat),
)
PetType = GraphQLUnionType("Pet", [CatType, DogType])
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets": GraphQLField(
GraphQLList(PetType),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
)
)
query = """
{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
meows
}
}
}
"""
result = await graphql(schema, query)
assert result == (
{
"pets": [
{"name": "Odie", "woofs": True},
{"name": "Garfield", "meows": False},
]
},
None,
)
async def nulls_out_error_subtrees():
doc = """{
syncOk
syncError
syncRawError
syncReturnError
syncReturnErrorList
asyncOk
asyncError
asyncRawError
asyncReturnError
asyncReturnErrorWithExtensions
}"""
# noinspection PyPep8Naming,PyMethodMayBeStatic
class Data:
def syncOk(self, _info):
return 'sync ok'
def syncError(self, _info):
raise GraphQLError('Error getting syncError')
def syncRawError(self, _info):
raise Exception('Error getting syncRawError')
def syncReturnError(self, _info):
return Exception('Error getting syncReturnError')
def syncReturnErrorList(self, _info):
return [
'sync0',
Exception('Error getting syncReturnErrorList1'), 'sync2',
Exception('Error getting syncReturnErrorList3')
]
async def asyncOk(self, _info):
return 'async ok'
async def asyncError(self, _info):
raise Exception('Error getting asyncError')
async def asyncRawError(self, _info):
raise Exception('Error getting asyncRawError')
async def asyncReturnError(self, _info):
return GraphQLError('Error getting asyncReturnError')
async def asyncReturnErrorWithExtensions(self, _info):
return GraphQLError(
'Error getting asyncReturnErrorWithExtensions',
extensions={'foo': 'bar'})
ast = parse(doc)
schema = GraphQLSchema(
GraphQLObjectType(
'Type', {
'syncOk': GraphQLField(GraphQLString),
'syncError': GraphQLField(GraphQLString),
'syncRawError': GraphQLField(GraphQLString),
'syncReturnError': GraphQLField(GraphQLString),
'syncReturnErrorList': GraphQLField(
GraphQLList(GraphQLString)),
'asyncOk': GraphQLField(GraphQLString),
'asyncError': GraphQLField(GraphQLString),
'asyncErrorWithExtensions': GraphQLField(GraphQLString),
'asyncRawError': GraphQLField(GraphQLString),
'asyncReturnError': GraphQLField(GraphQLString),
'asyncReturnErrorWithExtensions':
GraphQLField(GraphQLString)
}))
assert await execute(schema, ast, Data()) == ({
'syncOk':
'sync ok',
'syncError':
None,
'syncRawError':
None,
'syncReturnError':
None,
'syncReturnErrorList': ['sync0', None, 'sync2', None],
'asyncOk':
'async ok',
'asyncError':
None,
'asyncRawError':
None,
'asyncReturnError':
None,
'asyncReturnErrorWithExtensions':
None
}, [{
'message': 'Error getting syncError',
'locations': [(3, 15)],
'path': ['syncError']
}, {
'message': 'Error getting syncRawError',
'locations': [(4, 15)],
'path': ['syncRawError']
}, {
'message': 'Error getting syncReturnError',
'locations': [(5, 15)],
'path': ['syncReturnError']
}, {
'message': 'Error getting syncReturnErrorList1',
'locations': [(6, 15)],
'path': ['syncReturnErrorList', 1]
}, {
'message': 'Error getting syncReturnErrorList3',
'locations': [(6, 15)],
'path': ['syncReturnErrorList', 3]
}, {
'message': 'Error getting asyncError',
'locations': [(8, 15)],
'path': ['asyncError']
}, {
'message': 'Error getting asyncRawError',
'locations': [(9, 15)],
'path': ['asyncRawError']
}, {
'message': 'Error getting asyncReturnError',
'locations': [(10, 15)],
'path': ['asyncReturnError']
}, {
'message': 'Error getting asyncReturnErrorWithExtensions',
'locations': [(11, 15)],
'path': ['asyncReturnErrorWithExtensions'],
'extensions': {
'foo': 'bar'
}
}])
def test_executes_arbitary_code():
# type: () -> None
class Data(object):
a = "Apple"
b = "Banana"
c = "Cookie"
d = "Donut"
e = "Egg"
@property
def f(self):
# type: () -> Promise
return resolved("Fish")
def pic(self, size=50):
# type: (int) -> Promise
return resolved("Pic of size: {}".format(size))
def deep(self):
# type: () -> DeepData
return DeepData()
def promise(self):
# type: () -> Promise
return resolved(Data())
class DeepData(object):
a = "Already Been Done"
b = "Boring"
c = ["Contrived", None, resolved("Confusing")]
def deeper(self):
# type: () -> List[Union[None, Data, Promise]]
return [Data(), None, resolved(Data())]
ast = parse("""
query Example($size: Int) {
a,
b,
x: c
...c
f
...on DataType {
pic(size: $size)
promise {
a
}
}
deep {
a
b
c
deeper {
a
b
}
}
}
fragment c on DataType {
d
e
}
""")
expected = {
"a": "Apple",
"b": "Banana",
"x": "Cookie",
"d": "Donut",
"e": "Egg",
"f": "Fish",
"pic": "Pic of size: 100",
"promise": {
"a": "Apple"
},
"deep": {
"a":
"Already Been Done",
"b":
"Boring",
"c": ["Contrived", None, "Confusing"],
"deeper": [
{
"a": "Apple",
"b": "Banana"
},
None,
{
"a": "Apple",
"b": "Banana"
},
],
},
}
DataType = GraphQLObjectType(
"DataType",
lambda: {
"a":
GraphQLField(GraphQLString),
"b":
GraphQLField(GraphQLString),
"c":
GraphQLField(GraphQLString),
"d":
GraphQLField(GraphQLString),
"e":
GraphQLField(GraphQLString),
"f":
GraphQLField(GraphQLString),
"pic":
GraphQLField(
args={"size": GraphQLArgument(GraphQLInt)},
type=GraphQLString,
resolver=lambda obj, info, **args: obj.pic(args["size"]),
),
"deep":
GraphQLField(DeepDataType),
"promise":
GraphQLField(DataType),
},
)
DeepDataType = GraphQLObjectType(
"DeepDataType",
{
"a": GraphQLField(GraphQLString),
"b": GraphQLField(GraphQLString),
"c": GraphQLField(GraphQLList(GraphQLString)),
"deeper": GraphQLField(GraphQLList(DataType)),
},
)
schema = GraphQLSchema(query=DataType)
def handle_result(result):
# type: (ExecutionResult) -> None
assert not result.errors
assert result.data == expected
handle_result(
execute(
schema,
ast,
Data(),
variable_values={"size": 100},
operation_name="Example",
executor=ThreadExecutor(),
))
handle_result(
execute(schema,
ast,
Data(),
variable_values={"size": 100},
operation_name="Example"))
async def executes_arbitrary_code():
# noinspection PyMethodMayBeStatic,PyMethodMayBeStatic
class Data:
def a(self, _info):
return 'Apple'
def b(self, _info):
return 'Banana'
def c(self, _info):
return 'Cookie'
def d(self, _info):
return 'Donut'
def e(self, _info):
return 'Egg'
f = 'Fish'
def pic(self, _info, size=50):
return f'Pic of size: {size}'
def deep(self, _info):
return DeepData()
def promise(self, _info):
return promise_data()
# noinspection PyMethodMayBeStatic,PyMethodMayBeStatic
class DeepData:
def a(self, _info):
return 'Already Been Done'
def b(self, _info):
return 'Boring'
def c(self, _info):
return ['Contrived', None, 'Confusing']
def deeper(self, _info):
return [Data(), None, Data()]
async def promise_data():
await asyncio.sleep(0)
return Data()
doc = """
query Example($size: Int) {
a,
b,
x: c
...c
f
...on DataType {
pic(size: $size)
promise {
a
}
}
deep {
a
b
c
deeper {
a
b
}
}
}
fragment c on DataType {
d
e
}
"""
ast = parse(doc)
expected = ({
'a': 'Apple',
'b': 'Banana',
'x': 'Cookie',
'd': 'Donut',
'e': 'Egg',
'f': 'Fish',
'pic': 'Pic of size: 100',
'promise': {
'a': 'Apple'
},
'deep': {
'a':
'Already Been Done',
'b':
'Boring',
'c': ['Contrived', None, 'Confusing'],
'deeper': [{
'a': 'Apple',
'b': 'Banana'
}, None, {
'a': 'Apple',
'b': 'Banana'
}]
}
}, None)
DataType = GraphQLObjectType(
'DataType', lambda: {
'a':
GraphQLField(GraphQLString),
'b':
GraphQLField(GraphQLString),
'c':
GraphQLField(GraphQLString),
'd':
GraphQLField(GraphQLString),
'e':
GraphQLField(GraphQLString),
'f':
GraphQLField(GraphQLString),
'pic':
GraphQLField(GraphQLString,
args={'size': GraphQLArgument(GraphQLInt)},
resolve=lambda obj, info, size: obj.pic(
info, size)),
'deep':
GraphQLField(DeepDataType),
'promise':
GraphQLField(DataType)
})
DeepDataType = GraphQLObjectType(
'DeepDataType', {
'a': GraphQLField(GraphQLString),
'b': GraphQLField(GraphQLString),
'c': GraphQLField(GraphQLList(GraphQLString)),
'deeper': GraphQLList(DataType)
})
schema = GraphQLSchema(DataType)
assert await execute(schema,
ast,
Data(),
variable_values={'size': 100},
operation_name='Example') == expected
def builds_a_schema_with_an_enum():
food_enum = GraphQLEnumType(
"Food",
{
"VEGETABLES":
GraphQLEnumValue(1, description="Foods that are vegetables."),
"FRUITS":
GraphQLEnumValue(2),
"OILS":
GraphQLEnumValue(3, deprecation_reason="Too fatty."),
},
description="Varieties of food stuffs",
)
schema = GraphQLSchema(
GraphQLObjectType(
"EnumFields",
{
"food":
GraphQLField(
food_enum,
args={
"kind":
GraphQLArgument(food_enum,
description="what kind of food?")
},
description="Repeats the arg you give it",
)
},
))
introspection = introspection_from_schema(schema)
client_schema = build_client_schema(introspection)
second_introspection = introspection_from_schema(client_schema)
assert second_introspection == introspection
# It's also an Enum type on the client.
client_food_enum = assert_enum_type(client_schema.get_type("Food"))
# Client types do not get server-only values, so the values mirror the names,
# rather than using the integers defined in the "server" schema.
values = {
name: value.to_kwargs()
for name, value in client_food_enum.values.items()
}
assert values == {
"VEGETABLES": {
"value": "VEGETABLES",
"description": "Foods that are vegetables.",
"deprecation_reason": None,
"extensions": {},
"ast_node": None,
},
"FRUITS": {
"value": "FRUITS",
"description": None,
"deprecation_reason": None,
"extensions": {},
"ast_node": None,
},
"OILS": {
"value": "OILS",
"description": None,
"deprecation_reason": "Too fatty.",
"extensions": {},
"ast_node": None,
},
}
def fields():
nonlocal calls
calls += 1
return {"f": GraphQLField(ScalarType)}
async def promise_to_change_the_number(self,
new_number: int) -> NumberHolder:
await asyncio.sleep(0)
return self.immediately_change_the_number(new_number)
def fail_to_change_the_number(self, newNumber: int):
raise RuntimeError(f"Cannot change the number to {newNumber}")
async def promise_and_fail_to_change_the_number(self, newNumber: int):
await asyncio.sleep(0)
self.fail_to_change_the_number(newNumber)
numberHolderType = GraphQLObjectType("NumberHolder",
{"theNumber": GraphQLField(GraphQLInt)})
# noinspection PyPep8Naming
schema = GraphQLSchema(
GraphQLObjectType("Query",
{"numberHolder": GraphQLField(numberHolderType)}),
GraphQLObjectType(
"Mutation",
{
"immediatelyChangeTheNumber":
GraphQLField(
numberHolderType,
args={"newNumber": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, _info, newNumber: obj.
immediately_change_the_number(newNumber),
),
def accepts_an_interface_type_defining_resolve_type():
assert GraphQLInterfaceType("AnotherInterface", {"f": GraphQLField(ScalarType)})
from graphql.type import (GraphQLField, GraphQLObjectType, GraphQLSchema,
GraphQLString)
Query = GraphQLObjectType(
'Query', lambda: {
'hello': GraphQLField(GraphQLString, resolver=lambda *_: "World"),
})
schema = GraphQLSchema(Query)
def get_graphql_schema_from_schema_graph(schema_graph,
class_to_field_type_overrides,
hidden_classes):
"""Return a GraphQL schema object corresponding to the schema of the given schema graph.
Args:
schema_graph: SchemaGraph
class_to_field_type_overrides: dict, class name -> {field name -> field type},
(string -> {string -> GraphQLType}). Used to override the
type of a field in the class where it's first defined and all
the class's subclasses.
hidden_classes: set of strings, classes to not include in the GraphQL schema.
Returns:
tuple of (GraphQL schema object, GraphQL type equivalence hints dict).
The tuple is of type (GraphQLSchema, {GraphQLObjectType -> GraphQLUnionType}).
"""
_validate_overriden_fields_are_not_defined_in_superclasses(
class_to_field_type_overrides, schema_graph)
# The field types of subclasses must also be overridden.
# Remember that the result returned by get_subclass_set(class_name) includes class_name itself.
inherited_field_type_overrides = _get_inherited_field_types(
class_to_field_type_overrides, schema_graph)
graphql_types = OrderedDict()
type_equivalence_hints = OrderedDict()
# For each vertex class, construct its analogous GraphQL type representation.
for vertex_cls_name in sorted(schema_graph.vertex_class_names):
vertex_cls = schema_graph.get_element_by_class_name(vertex_cls_name)
if vertex_cls_name in hidden_classes:
continue
inherited_field_type_overrides.setdefault(vertex_cls_name, dict())
field_type_overrides = inherited_field_type_overrides[vertex_cls_name]
# We have to use delayed type binding here, because some of the type references
# are circular: if an edge connects vertices of types A and B, then
# GraphQL type A has a List[B] field, and type B has a List[A] field.
# To avoid the circular dependency, GraphQL allows us to initialize the types
# initially without their field information, and fill in their field information
# later using a lambda function as the second argument to GraphQLObjectType.
# This lambda function will be called on each type after all types are created
# in their initial blank state.
#
# However, 'cls_name' is a variable that would not be correctly bound
# if we naively tried to construct a lambda in-place, because Python lambdas
# are not closures. Instead, call a function with 'cls_name' as an argument,
# and have that function construct and return the required lambda.
field_specification_lambda = _create_field_specification(
schema_graph, graphql_types, field_type_overrides, hidden_classes,
vertex_cls_name)
# Abstract classes are interfaces, concrete classes are object types.
current_graphql_type = None
if vertex_cls.abstract:
# "fields" is a kwarg in the interface constructor, even though
# it's a positional arg in the object type constructor.
current_graphql_type = GraphQLInterfaceType(
vertex_cls_name, fields=field_specification_lambda)
else:
# For similar reasons as the field_specification_lambda,
# we need to create an interface specification lambda function that
# specifies the interfaces implemented by this type.
interface_specification_lambda = _create_interface_specification(
schema_graph, graphql_types, hidden_classes, vertex_cls_name)
# N.B.: Ignore the "is_type_of" argument below, it is simply a circumvention of
# a sanity check inside the GraphQL library. The library assumes that we'll use
# its execution system, so it complains that we don't provide a means to
# differentiate between different implementations of the same interface.
# We don't care, because we compile the GraphQL query to a database query.
current_graphql_type = GraphQLObjectType(
vertex_cls_name,
field_specification_lambda,
interfaces=interface_specification_lambda,
is_type_of=lambda: None)
graphql_types[vertex_cls_name] = current_graphql_type
# For each vertex class, construct all union types representations.
for vertex_cls_name in sorted(schema_graph.vertex_class_names):
vertex_cls = schema_graph.get_element_by_class_name(vertex_cls_name)
if vertex_cls_name in hidden_classes:
continue
vertex_cls_subclasses = schema_graph.get_subclass_set(vertex_cls_name)
if not vertex_cls.abstract and len(vertex_cls_subclasses) > 1:
# In addition to creating this class' corresponding GraphQL type, we'll need a
# union type to represent it when it appears as the endpoint of an edge.
union_type_name = _get_union_type_name(vertex_cls_subclasses)
# For similar reasons as the field_specification_lambda,
# we need to create a union type specification lambda function that specifies
# the types that this union type is composed of.
type_specification_lambda = _create_union_types_specification(
schema_graph, graphql_types, hidden_classes, vertex_cls_name)
union_type = GraphQLUnionType(union_type_name,
types=type_specification_lambda)
graphql_types[union_type_name] = union_type
type_equivalence_hints[graphql_types[vertex_cls_name]] = union_type
# Include all abstract non-vertex classes whose only non-abstract subclasses are vertices.
for non_graph_cls_name in sorted(schema_graph.non_graph_class_names):
if non_graph_cls_name in hidden_classes:
continue
if not schema_graph.get_element_by_class_name(
non_graph_cls_name).abstract:
continue
cls_subclasses = schema_graph.get_subclass_set(non_graph_cls_name)
# No need to add the possible abstract class if it doesn't have subclasses besides itself.
if len(cls_subclasses) > 1:
all_non_abstract_subclasses_are_vertices = True
# Check all non-abstract subclasses are vertices.
for subclass_name in cls_subclasses:
subclass = schema_graph.get_element_by_class_name(
subclass_name)
if subclass_name != non_graph_cls_name:
if not subclass.abstract and not subclass.is_vertex:
all_non_abstract_subclasses_are_vertices = False
break
if all_non_abstract_subclasses_are_vertices:
# Add abstract class as an interface.
inherited_field_type_overrides.setdefault(
non_graph_cls_name, dict())
field_type_overrides = inherited_field_type_overrides[
non_graph_cls_name]
field_specification_lambda = _create_field_specification(
schema_graph, graphql_types, field_type_overrides,
hidden_classes, non_graph_cls_name)
graphql_type = GraphQLInterfaceType(
non_graph_cls_name, fields=field_specification_lambda)
graphql_types[non_graph_cls_name] = graphql_type
if not graphql_types:
raise EmptySchemaError(
u'After evaluating all subclasses of V, we were not able to find '
u'visible schema data to import into the GraphQL schema object')
# Create the root query GraphQL type. Consists of all non-union classes, i.e.
# all non-abstract classes (as GraphQL types) and all abstract classes (as GraphQL interfaces).
RootSchemaQuery = GraphQLObjectType(
'RootSchemaQuery',
OrderedDict([(name, GraphQLField(GraphQLList(value)))
for name, value in sorted(six.iteritems(graphql_types),
key=lambda x: x[0])
if not isinstance(value, GraphQLUnionType)]))
schema = GraphQLSchema(RootSchemaQuery, directives=DIRECTIVES)
# Note that the GraphQLSchema reconstructs the set of types in the schema by recursively
# searching through the fields of the RootSchemaQuery. Since union types can only appear in the
# fields of other types as edges, union types with no in or out edges will not appear in the
# schema. Therefore, we remove these unions and their keys from the type equivalence hints.
return schema, _get_referenced_type_equivalences(graphql_types,
type_equivalence_hints)
async def is_type_of_used_to_resolve_runtime_type_for_union(sync):
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Dog, sync),
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
is_type_of=get_is_type_of(Cat, sync),
)
pet_type = GraphQLUnionType("Pet", [cat_type, dog_type])
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
))
query = """
{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{
"pets": [
{
"name": "Odie",
"woofs": True
},
{
"name": "Garfield",
"meows": False
},
]
},
None,
)
# type: () -> NullingData
return NullingData()
def promiseNest(self):
# type: () -> Promise
return resolved(NullingData())
def nonNullPromiseNest(self):
# type: () -> Promise
return resolved(NullingData())
DataType = GraphQLObjectType(
"DataType",
lambda: {
"sync": GraphQLField(GraphQLString),
"nonNullSync": GraphQLField(GraphQLNonNull(GraphQLString)),
"promise": GraphQLField(GraphQLString),
"nonNullPromise": GraphQLField(GraphQLNonNull(GraphQLString)),
"nest": GraphQLField(DataType),
"nonNullNest": GraphQLField(GraphQLNonNull(DataType)),
"promiseNest": GraphQLField(DataType),
"nonNullPromiseNest": GraphQLField(GraphQLNonNull(DataType)),
},
)
schema = GraphQLSchema(DataType)
def order_errors(error):
# type: (Dict[str, Any]) -> Tuple[int, int]
async def deprecated_resolve_type_allows_resolving_with_type_object(sync):
cat_type: GraphQLObjectType
dog_type: GraphQLObjectType
pet_type = GraphQLInterfaceType(
"Pet",
{"name": GraphQLField(GraphQLString)},
resolve_type=get_type_resolver(
lambda: {
Dog: dog_type,
Cat: cat_type
}, sync),
)
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[cat_type, dog_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{
"pets": [
{
"name": "Odie",
"woofs": True
},
{
"name": "Garfield",
"meows": False
},
]
},
None,
)
def resolve_type_on_union_yields_useful_error():
HumanType = GraphQLObjectType("Human",
{"name": GraphQLField(GraphQLString)})
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
)
PetType = GraphQLUnionType(
"Pet",
[DogType, CatType],
resolve_type=get_type_resolver({
Dog: DogType,
Cat: CatType,
Human: HumanType
}),
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(PetType),
resolve=lambda *_: [
Dog("Odie", True),
Cat("Garfield", False),
Human("Jon"),
],
)
},
))
query = """
{
pets {
... on Dog {
name
woofs
}
... on Cat {
name
meows
}
}
}
"""
result = graphql_sync(schema, query)
assert result.data == {
"pets": [
{
"name": "Odie",
"woofs": True
},
{
"name": "Garfield",
"meows": False
},
None,
]
}
assert len(result.errors) == 1
assert format_error(result.errors[0]) == {
"message": "Runtime Object type 'Human'"
" is not a possible type for 'Pet'.",
"locations": [(3, 15)],
"path": ["pets", 2],
}
async def resolve_type_can_throw(sync):
pet_type = GraphQLInterfaceType(
"Pet",
{"name": GraphQLField(GraphQLString)},
resolve_type=get_type_error(sync),
)
dog_type = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
cat_type = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[pet_type],
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(pet_type),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[dog_type, cat_type],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
assert await execute_query(sync, schema, query) == (
{
"pets": [None, None]
},
[
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 0],
},
{
"message": "We are testing this error",
"locations": [(3, 15)],
"path": ["pets", 1],
},
],
)
def is_type_of_used_to_resolve_runtime_type_for_interface():
PetType = GraphQLInterfaceType("Pet",
{"name": GraphQLField(GraphQLString)})
DogType = GraphQLObjectType(
"Dog",
{
"name": GraphQLField(GraphQLString),
"woofs": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
is_type_of=get_is_type_of(Dog),
)
CatType = GraphQLObjectType(
"Cat",
{
"name": GraphQLField(GraphQLString),
"meows": GraphQLField(GraphQLBoolean),
},
interfaces=[PetType],
is_type_of=get_is_type_of(Cat),
)
schema = GraphQLSchema(
GraphQLObjectType(
"Query",
{
"pets":
GraphQLField(
GraphQLList(PetType),
resolve=lambda *_args: [
Dog("Odie", True),
Cat("Garfield", False),
],
)
},
),
types=[CatType, DogType],
)
query = """
{
pets {
name
... on Dog {
woofs
}
... on Cat {
meows
}
}
}
"""
result = graphql_sync(schema, query)
assert result == (
{
"pets": [
{
"name": "Odie",
"woofs": True
},
{
"name": "Garfield",
"meows": False
},
]
},
None,
)
async def executes_arbitrary_code():
# noinspection PyMethodMayBeStatic,PyMethodMayBeStatic
class Data:
def a(self, _info):
return "Apple"
def b(self, _info):
return "Banana"
def c(self, _info):
return "Cookie"
def d(self, _info):
return "Donut"
def e(self, _info):
return "Egg"
f = "Fish"
# Called only by DataType::pic static resolver
def pic(self, _info, size=50):
return f"Pic of size: {size}"
def deep(self, _info):
return DeepData()
def promise(self, _info):
return promise_data()
# noinspection PyMethodMayBeStatic,PyMethodMayBeStatic
class DeepData:
def a(self, _info):
return "Already Been Done"
def b(self, _info):
return "Boring"
def c(self, _info):
return ["Contrived", None, "Confusing"]
def deeper(self, _info):
return [Data(), None, Data()]
async def promise_data():
await asyncio.sleep(0)
return Data()
DeepDataType: GraphQLObjectType
DataType = GraphQLObjectType(
"DataType",
lambda: {
"a":
GraphQLField(GraphQLString),
"b":
GraphQLField(GraphQLString),
"c":
GraphQLField(GraphQLString),
"d":
GraphQLField(GraphQLString),
"e":
GraphQLField(GraphQLString),
"f":
GraphQLField(GraphQLString),
"pic":
GraphQLField(
GraphQLString,
args={"size": GraphQLArgument(GraphQLInt)},
resolve=lambda obj, info, size: obj.pic(info, size),
),
"deep":
GraphQLField(DeepDataType),
"promise":
GraphQLField(DataType),
},
)
DeepDataType = GraphQLObjectType(
"DeepDataType",
{
"a": GraphQLField(GraphQLString),
"b": GraphQLField(GraphQLString),
"c": GraphQLField(GraphQLList(GraphQLString)),
"deeper": GraphQLList(DataType),
},
)
document = parse("""
query ($size: Int) {
a,
b,
x: c
...c
f
...on DataType {
pic(size: $size)
promise {
a
}
}
deep {
a
b
c
deeper {
a
b
}
}
}
fragment c on DataType {
d
e
}
""")
result = await execute(GraphQLSchema(DataType),
document,
Data(),
variable_values={"size": 100})
assert result == (
{
"a": "Apple",
"b": "Banana",
"x": "Cookie",
"d": "Donut",
"e": "Egg",
"f": "Fish",
"pic": "Pic of size: 100",
"promise": {
"a": "Apple"
},
"deep": {
"a":
"Already Been Done",
"b":
"Boring",
"c": ["Contrived", None, "Confusing"],
"deeper": [
{
"a": "Apple",
"b": "Banana"
},
None,
{
"a": "Apple",
"b": "Banana"
},
],
},
},
None,
)
