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// Copyright (c) 2013-2014 Sandstorm Development Group, Inc. and contributors
// Licensed under the MIT License:
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
// This file contains the parts of dynamic.h that live in capnp-rpc.so.
#include "dynamic.h"
#include <kj/debug.h>
namespace capnp {
DynamicCapability::Client DynamicCapability::Client::upcast(InterfaceSchema requestedSchema) {
KJ_REQUIRE(schema.extends(requestedSchema), "Can't upcast to non-superclass.") {}
return DynamicCapability::Client(requestedSchema, hook->addRef());
}
Request<DynamicStruct, DynamicStruct> DynamicCapability::Client::newRequest(
InterfaceSchema::Method method, kj::Maybe<MessageSize> sizeHint) {
auto methodInterface = method.getContainingInterface();
KJ_REQUIRE(schema.extends(methodInterface), "Interface does not implement this method.");
auto paramType = method.getParamType();
auto resultType = method.getResultType();
auto typeless = hook->newCall(
methodInterface.getProto().getId(), method.getIndex(), sizeHint);
return Request<DynamicStruct, DynamicStruct>(
typeless.getAs<DynamicStruct>(paramType), kj::mv(typeless.hook), resultType);
}
Request<DynamicStruct, DynamicStruct> DynamicCapability::Client::newRequest(
kj::StringPtr methodName, kj::Maybe<MessageSize> sizeHint) {
return newRequest(schema.getMethodByName(methodName), sizeHint);
}
Capability::Server::DispatchCallResult DynamicCapability::Server::dispatchCall(
uint64_t interfaceId, uint16_t methodId,
CallContext<AnyPointer, AnyPointer> context) {
KJ_IF_MAYBE(interface, schema.findSuperclass(interfaceId)) {
auto methods = interface->getMethods();
if (methodId < methods.size()) {
auto method = methods[methodId];
auto resultType = method.getResultType();
return {
call(method, CallContext<DynamicStruct, DynamicStruct>(*context.hook,
method.getParamType(), resultType)),
resultType.isStreamResult()
};
} else {
return internalUnimplemented(
interface->getProto().getDisplayName().cStr(), interfaceId, methodId);
}
} else {
return internalUnimplemented(schema.getProto().getDisplayName().cStr(), interfaceId);
}
}
RemotePromise<DynamicStruct> Request<DynamicStruct, DynamicStruct>::send() {
auto typelessPromise = hook->send();
hook = nullptr; // prevent reuse
auto resultSchemaCopy = resultSchema;
// Convert the Promise to return the correct response type.
// Explicitly upcast to kj::Promise to make clear that calling .then() doesn't invalidate the
// Pipeline part of the RemotePromise.
auto typedPromise = kj::implicitCast<kj::Promise<Response<AnyPointer>>&>(typelessPromise)
.then([=](Response<AnyPointer>&& response) -> Response<DynamicStruct> {
return Response<DynamicStruct>(response.getAs<DynamicStruct>(resultSchemaCopy),
kj::mv(response.hook));
});
// Wrap the typeless pipeline in a typed wrapper.
DynamicStruct::Pipeline typedPipeline(resultSchema,
kj::mv(kj::implicitCast<AnyPointer::Pipeline&>(typelessPromise)));
return RemotePromise<DynamicStruct>(kj::mv(typedPromise), kj::mv(typedPipeline));
}
kj::Promise<void> Request<DynamicStruct, DynamicStruct>::sendStreaming() {
KJ_REQUIRE(resultSchema.isStreamResult());
auto promise = hook->sendStreaming();
hook = nullptr; // prevent reuse
return promise;
}
} // namespace capnp