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// This file is part of CAF, the C++ Actor Framework. See the file LICENSE in
// the main distribution directory for license terms and copyright or visit
// https://github.com/actor-framework/actor-framework/blob/master/LICENSE.
#define CAF_SUITE io.broker
#include "caf/io/broker.hpp"
#include "io-test.hpp"
#include <cstdint>
#include <iostream>
#include <memory>
#include "caf/all.hpp"
#include "caf/io/all.hpp"
using namespace caf;
using namespace caf::io;
namespace {
struct suite_state {
int pings = 0;
int pongs = 0;
suite_state() = default;
};
using suite_state_ptr = std::shared_ptr<suite_state>;
behavior ping(event_based_actor* self, suite_state_ptr ssp) {
return {
[=](ok_atom, const actor& pong) {
MESSAGE("received `ok_atom`");
++ssp->pings;
self->send(pong, ping_atom_v);
self->become({
[=](pong_atom) {
MESSAGE("ping: received pong");
self->send(pong, ping_atom_v);
if (++ssp->pings == 10) {
self->quit();
MESSAGE("ping is done");
}
},
[=](ping_atom) { CAF_FAIL("ping received a ping message"); },
});
},
};
}
behavior pong(event_based_actor* self, suite_state_ptr ssp) {
return {
[=](ping_atom) -> pong_atom {
MESSAGE("pong: received ping");
if (++ssp->pongs == 10) {
self->quit();
MESSAGE("pong is done");
}
return pong_atom_v;
},
};
}
behavior peer_fun(broker* self, connection_handle hdl, const actor& buddy) {
MESSAGE("peer_fun called");
CAF_REQUIRE(self != nullptr);
CAF_REQUIRE(self->subtype() == resumable::io_actor);
self->monitor(buddy);
self->set_down_handler([self](down_msg& dm) {
// Stop if buddy is done.
self->quit(std::move(dm.reason));
});
// Assume exactly one connection.
CAF_REQUIRE(self->connections().size() == 1);
self->configure_read(hdl, receive_policy::exactly(sizeof(type_id_t)));
auto write = [=](type_id_t type) {
auto& buf = self->wr_buf(hdl);
auto first = reinterpret_cast<byte*>(&type);
buf.insert(buf.end(), first, first + sizeof(type_id_t));
self->flush(hdl);
};
return {
[=](const connection_closed_msg&) {
MESSAGE("received connection_closed_msg");
self->quit();
},
[=](const new_data_msg& msg) {
MESSAGE("received new_data_msg");
CAF_REQUIRE_EQUAL(msg.buf.size(), sizeof(type_id_t));
type_id_t type = 0;
memcpy(&type, msg.buf.data(), sizeof(type_id_t));
static_assert(type_id_v<ping_atom> != type_id_v<pong_atom>);
if (type == type_id_v<ping_atom>) {
self->send(buddy, ping_atom_v);
} else if (type == type_id_v<pong_atom>) {
self->send(buddy, pong_atom_v);
} else {
CAF_FAIL("unexpected message type");
}
},
[=](ping_atom) { write(type_id_v<ping_atom>); },
[=](pong_atom) { write(type_id_v<pong_atom>); },
};
}
behavior peer_acceptor_fun(broker* self, const actor& buddy) {
MESSAGE("peer_acceptor_fun");
return {
[=](const new_connection_msg& msg) {
MESSAGE("received `new_connection_msg`");
self->fork(peer_fun, msg.handle, buddy);
self->quit();
},
[=](publish_atom) -> result<uint16_t> {
if (auto res = self->add_tcp_doorman(8080))
return res->second;
else
return std::move(res.error());
},
};
}
using int_peer = connection_handler::extend<replies_to<int>::with<int>>;
int_peer::behavior_type int_peer_fun(int_peer::broker_pointer) {
return {
[=](const connection_closed_msg&) {
CAF_FAIL("received connection_closed_msg");
},
[=](const new_data_msg&) { CAF_FAIL("received new_data_msg"); },
[=](int value) {
MESSAGE("received: " << value);
return value;
},
};
}
} // namespace
BEGIN_FIXTURE_SCOPE(point_to_point_fixture<>)
CAF_TEST(test broker to broker communication) {
prepare_connection(mars, earth, "mars", 8080);
MESSAGE("spawn peer acceptor on mars");
auto ssp = std::make_shared<suite_state>();
auto server = mars.mm.spawn_broker(peer_acceptor_fun,
mars.sys.spawn(pong, ssp));
mars.self->send(server, publish_atom_v);
run();
expect_on(mars, (uint16_t), from(server).to(mars.self).with(8080));
MESSAGE("spawn ping and client on earth");
auto pinger = earth.sys.spawn(ping, ssp);
auto client = unbox(earth.mm.spawn_client(peer_fun, "mars", 8080, pinger));
anon_send(pinger, ok_atom_v, client);
run();
CHECK_EQ(ssp->pings, 10);
CHECK_EQ(ssp->pongs, 10);
}
CAF_TEST(test whether we can spawn typed broker) {
auto peer = mars.mm.spawn_broker(int_peer_fun);
mars.self->send(peer, 42);
run();
expect_on(mars, (int), from(peer).to(mars.self).with(42));
}
END_FIXTURE_SCOPE()
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