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// Copyright Vespa.ai. 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/transport.h>
#include <vespa/fnet/transport_thread.h>
#include <vespa/fnet/frt/supervisor.h>
#include <vespa/fnet/frt/target.h>
#include <vespa/fnet/frt/rpcrequest.h>
#include <vespa/vespalib/net/crypto_engine.h>
#include <vespa/vespalib/util/size_literals.h>
#include <vespa/vespalib/util/stringfmt.h>
#include <vespa/vespalib/util/time.h>
#include <thread>
using namespace vespalib;
using vespalib::make_string_short::fmt;
CryptoEngine::SP null_crypto = std::make_shared<NullCryptoEngine>();
struct BasicFixture {
FNET_Transport transport;
BasicFixture() : transport(fnet::TransportConfig(4).crypto(null_crypto)) {
ASSERT_TRUE(transport.Start());
}
~BasicFixture() {
transport.ShutDown(true);
}
};
struct RpcFixture : FRT_Invokable {
FRT_Supervisor orb;
std::atomic<FNET_Connection *> back_conn;
RpcFixture(BasicFixture &basic) : orb(&basic.transport), back_conn(nullptr) {
init_rpc();
ASSERT_TRUE(orb.Listen(0));
}
~RpcFixture() {
if (back_conn.load() != nullptr) {
back_conn.load()->internal_subref();
}
}
uint32_t port() const { return orb.GetListenPort(); }
FRT_Target *connect(uint32_t port) {
return orb.GetTarget(port);
}
void init_rpc() {
FRT_ReflectionBuilder rb(&orb);
rb.DefineMethod("inc", "l", "l", FRT_METHOD(RpcFixture::rpc_inc), this);
rb.MethodDesc("increment a 64-bit integer");
rb.ParamDesc("in", "an integer (64 bit)");
rb.ReturnDesc("out", "in + 1 (64 bit)");
rb.DefineMethod("connect", "", "", FRT_METHOD(RpcFixture::rpc_connect), this);
rb.MethodDesc("capture 2way connection");
}
void rpc_inc(FRT_RPCRequest *req) {
FRT_Values ¶ms = *req->GetParams();
FRT_Values &ret = *req->GetReturn();
ret.AddInt64(params[0]._intval64 + 1);
}
void rpc_connect(FRT_RPCRequest *req) {
ASSERT_TRUE(back_conn.load() == nullptr);
back_conn.store(req->GetConnection());
ASSERT_TRUE(back_conn.load() != nullptr);
back_conn.load()->internal_addref();
}
FRT_Target *meta_connect(uint32_t port) {
auto *target = orb.Get2WayTarget(fmt("tcp/localhost:%u", port).c_str());
auto *req = orb.AllocRPCRequest();
req->SetMethodName("connect");
target->InvokeSync(req, 300.0);
ASSERT_TRUE(req->CheckReturnTypes(""));
req->internal_subref();
return target;
};
static int check_result(FRT_RPCRequest *req, uint64_t expect) {
int num_ok = 0;
if (!req->CheckReturnTypes("l")) {
ASSERT_EQUAL(req->GetErrorCode(), FRTE_RPC_CONNECTION);
} else {
uint64_t ret = req->GetReturn()->GetValue(0)._intval64;
ASSERT_EQUAL(ret, expect);
++num_ok;
}
req->internal_subref();
return num_ok;
}
static int verify_rpc(FNET_Connection *conn) {
auto *req = FRT_Supervisor::AllocRPCRequest();
req->SetMethodName("inc");
req->GetParams()->AddInt64(7);
FRT_Supervisor::InvokeSync(conn->Owner()->GetScheduler(), conn, req, 300.0);
return check_result(req, 8);
}
static int verify_rpc(FRT_Target *target) {
auto *req = FRT_Supervisor::AllocRPCRequest();
req->SetMethodName("inc");
req->GetParams()->AddInt64(4);
target->InvokeSync(req, 300.0);
return check_result(req, 5);
}
int verify_rpc(FRT_Target *target, uint32_t port) {
auto *my_target = connect(port);
int num_ok = verify_rpc(target) + verify_rpc(my_target) + verify_rpc(back_conn.load());
my_target->internal_subref();
return num_ok;
}
};
// test timeline:
//
// listen and export server ports
// --- #1 ---
// connect to target peer
// --- #2 ---
// verify that rpc works (persistent, transient, 2way)
// --- #3 ---
// detach supervisor while talking to it
// --- #4 ---
// verify that non-detached supervisor still works
// --- #5 ---
// test cleanup
TEST_MT_FFFFF("require that supervisor can be detached from transport", 4, BasicFixture(), uint32_t(), uint32_t(), uint32_t(), uint32_t()) {
if (thread_id == 0) { // server 1 (talks to client 1)
auto self = std::make_unique<RpcFixture>(f1);
f2 = self->port();
TEST_BARRIER(); // #1
auto *target = self->meta_connect(f4);
auto *client_target = self->connect(f3);
TEST_BARRIER(); // #2
TEST_BARRIER(); // #3
std::this_thread::sleep_for(50ms);
self.reset(); // <--- detach supervisor for server 1
TEST_BARRIER(); // #4
EXPECT_EQUAL(RpcFixture::verify_rpc(target), 0); // outgoing 2way target should be closed
EXPECT_EQUAL(RpcFixture::verify_rpc(client_target), 1); // pure client target should not be closed
TEST_BARRIER(); // #5
target->internal_subref();
client_target->internal_subref();
} else if (thread_id == 1) { // server 2 (talks to client 2)
auto self = std::make_unique<RpcFixture>(f1);
f3 = self->port();
TEST_BARRIER(); // #1
auto *target = self->meta_connect(f5);
TEST_BARRIER(); // #2
TEST_BARRIER(); // #3
TEST_BARRIER(); // #4
TEST_BARRIER(); // #5
target->internal_subref();
} else if (thread_id == 2) { // client 1 (talks to server 1)
auto self = std::make_unique<RpcFixture>(f1);
f4 = self->port();
TEST_BARRIER(); // #1
auto *target = self->connect(f2);
TEST_BARRIER(); // #2
ASSERT_TRUE(self->back_conn.load() != nullptr);
EXPECT_EQUAL(self->verify_rpc(target, f2), 3);
TEST_BARRIER(); // #3
auto until = steady_clock::now() + 120s;
while ((self->verify_rpc(target, f2) > 0) &&
(steady_clock::now() < until))
{
// wait until peer is fully detached
}
TEST_BARRIER(); // #4
EXPECT_EQUAL(self->verify_rpc(target, f2), 0);
TEST_BARRIER(); // #5
target->internal_subref();
} else { // client 2 (talks to server 2)
ASSERT_EQUAL(thread_id, 3u);
auto self = std::make_unique<RpcFixture>(f1);
f5 = self->port();
TEST_BARRIER(); // #1
auto *target = self->connect(f3);
TEST_BARRIER(); // #2
ASSERT_TRUE(self->back_conn.load() != nullptr);
EXPECT_EQUAL(self->verify_rpc(target, f3), 3);
TEST_BARRIER(); // #3
TEST_BARRIER(); // #4
EXPECT_EQUAL(self->verify_rpc(target, f3), 3);
TEST_BARRIER(); // #5
target->internal_subref();
}
}
TEST_MAIN() { TEST_RUN_ALL(); }
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