def process(request: plugin.CodeGeneratorRequest,
response: plugin.CodeGeneratorResponse) -> None:
response.supported_features = plugin.CodeGeneratorResponse.FEATURE_PROTO3_OPTIONAL
for proto_file in request.proto_file:
has_service = False
file = plugin.CodeGeneratorResponse.File()
proto_file_name = proto_file.name.split('.')[0]
file.name = "{}.client.ts".format(proto_file_name)
file_content = ""
file_content += f"import * as {proto_file_name} from './{proto_file_name}';\n"
file_content += "import init from '../wasm/pkg/wasm';\n"
file_content += "import * as wasm from '../wasm/pkg/wasm';\n\n"
file_content += "export async function WasmInit() {\n"
file_content += " await init();\n"
file_content += "}\n\n"
for service in proto_file.service:
has_service = True
service_name = service.name
for method in service.method:
# type names pave . as prefix
input_type = method.input_type[1:]
output_type = method.output_type[1:]
snake_method_name = camel_to_snake(method.name)
file_content += f"export function {service_name}{method.name}(input: {input_type}): {output_type} {{\n"
file_content += f" let input_bytes = {input_type}.toBinary(input);\n"
file_content += f" let output_bytes = wasm.{snake_method_name}(input_bytes);\n"
file_content += f" return {output_type}.fromBinary(output_bytes);\n"
file_content += "}\n\n"
if has_service:
file.content = file_content
response.file.append(file)
def main() -> None:
with os.fdopen(sys.stdin.fileno(), 'rb') as inp:
request = CodeGeneratorRequest.FromString(inp.read())
types_map: Dict[str, str] = {}
for pf in request.proto_file:
for mt in pf.message_type:
types_map.update(_type_names(pf, mt))
response = CodeGeneratorResponse()
# See https://github.com/protocolbuffers/protobuf/blob/v3.12.0/docs/implementing_proto3_presence.md # noqa
if hasattr(CodeGeneratorResponse, 'Feature'):
response.supported_features = ( # type: ignore
CodeGeneratorResponse.FEATURE_PROTO3_OPTIONAL # type: ignore
)
for file_to_generate in request.file_to_generate:
proto_file = _get_proto(request, file_to_generate)
imports = [
_proto2pb2_module_name(dep)
for dep in list(proto_file.dependency) + [file_to_generate]
]
services = []
for service in proto_file.service:
methods = []
for method in service.method:
cardinality = _CARDINALITY[(method.client_streaming,
method.server_streaming)]
methods.append(
Method(
name=method.name,
cardinality=cardinality,
request_type=types_map[method.input_type],
reply_type=types_map[method.output_type],
))
services.append(Service(name=service.name, methods=methods))
file = response.file.add()
module_name = _proto2grpc_module_name(file_to_generate)
file.name = module_name.replace(".", "/") + ".py"
file.content = render(
proto_file=proto_file.name,
package=proto_file.package,
imports=imports,
services=services,
)
with os.fdopen(sys.stdout.fileno(), 'wb') as out:
out.write(response.SerializeToString())