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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/testkit/test_kit.h>
#include <vespa/fnet/frt/frt.h>
#include <vespa/vespalib/util/stringfmt.h>
struct Receptor : public FRT_IRequestWait
{
FRT_RPCRequest *req;
Receptor() : req(0) {}
void RequestDone(FRT_RPCRequest *r) override {
req = r;
}
};
struct Server : public FRT_Invokable
{
FRT_Supervisor &orb;
Receptor &receptor;
Server(FRT_Supervisor &s, Receptor &r) : orb(s), receptor(r) {
FRT_ReflectionBuilder rb(&s);
rb.DefineMethod("hook", "", "",
FRT_METHOD(Server::rpc_hook), this);
}
void rpc_hook(FRT_RPCRequest *req) {
FNET_Connection *conn = req->GetConnection();
conn->AddRef(); // need to keep it alive
req->Detach();
req->Return(); // will free request channel
FRT_RPCRequest *r = orb.AllocRPCRequest();
r->SetMethodName("frt.rpc.ping");
// might re-use request channel before it is unlinked from hashmap
orb.InvokeAsync(orb.GetTransport(), conn, r, 5.0, &receptor);
conn->SubRef(); // invocation will now keep the connection alive as needed
}
};
TEST("detach return invoke") {
Receptor receptor;
fnet::frt::StandaloneFRT frtServer;
FRT_Supervisor & supervisor = frtServer.supervisor();
Server server(supervisor, receptor);
ASSERT_TRUE(supervisor.Listen(0));
std::string spec = vespalib::make_string("tcp/localhost:%d", supervisor.GetListenPort());
FRT_Target *target = supervisor.Get2WayTarget(spec.c_str());
FRT_RPCRequest *req = supervisor.AllocRPCRequest();
req->SetMethodName("hook");
target->InvokeSync(req, 5.0);
EXPECT_TRUE(!req->IsError());
for (uint32_t i = 0; i < 1000; ++i) {
if (receptor.req != 0) {
break;
}
FastOS_Thread::Sleep(10);
}
req->SubRef();
target->SubRef();
if (receptor.req != 0) {
EXPECT_TRUE(!receptor.req->IsError());
receptor.req->SubRef();
}
EXPECT_TRUE(receptor.req != 0);
};
TEST_MAIN() { TEST_RUN_ALL(); }
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