1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
// Copyright Yahoo. 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/supervisor.h>
#include <vespa/fnet/frt/target.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <vespa/fnet/frt/invoker.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <atomic>
#include <thread>
struct Receptor : public FRT_IRequestWait
{
std::atomic<FRT_RPCRequest*> req;
Receptor() : req(nullptr) {}
void RequestDone(FRT_RPCRequest *r) override {
req.store(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->internal_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->internal_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.load() != nullptr) {
break;
}
std::this_thread::sleep_for(10ms);
}
req->internal_subref();
target->internal_subref();
if (receptor.req.load() != nullptr) {
EXPECT_TRUE(!receptor.req.load()->IsError());
receptor.req.load()->internal_subref();
}
EXPECT_TRUE(receptor.req.load() != nullptr);
};
TEST_MAIN() { TEST_RUN_ALL(); }
|
