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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include <vespa/vespalib/coro/lazy.h>
#include <vespa/vespalib/coro/detached.h>
#include <vespa/vespalib/coro/completion.h>
#include <vespa/vespalib/coro/async_io.h>
#include <vespa/vespalib/net/socket_spec.h>
#include <vespa/vespalib/net/server_socket.h>
#include <vespa/vespalib/net/socket_handle.h>
#include <vespa/vespalib/net/socket_address.h>
#include <vespa/vespalib/gtest/gtest.h>
using namespace vespalib;
using namespace vespalib::coro;
Detached self_exiting_run_loop(AsyncIo::SP async) {
for (size_t i = 0; co_await async->schedule(); ++i) {
fprintf(stderr, "self_exiting_run_loop -> current value: %zu\n", i);
}
fprintf(stderr, "self_exiting_run_loop -> exiting\n");
}
Work run_loop(AsyncIo &async, int a, int b) {
for (int i = a; i < b; ++i) {
co_await async.schedule();
fprintf(stderr, "run_loop [%d,%d> -> current value: %d\n", a, b, i);
}
co_return Done{};
}
TEST(AsyncIoTest, create_async_io) {
auto async = AsyncIo::create();
AsyncIo &api = async;
fprintf(stderr, "async_io impl: %s\n", api.get_impl_spec().c_str());
}
TEST(AsyncIoTest, run_stuff_in_async_io_context) {
auto async = AsyncIo::create();
auto f1 = make_future(run_loop(async, 10, 20));
auto f2 = make_future(run_loop(async, 20, 30));
auto f3 = make_future(run_loop(async, 30, 40));
f1.wait();
f2.wait();
f3.wait();
}
TEST(AsyncIoTest, shutdown_with_self_exiting_coroutine) {
auto async = AsyncIo::create();
auto f1 = make_future(run_loop(async, 10, 20));
auto f2 = make_future(run_loop(async, 20, 30));
self_exiting_run_loop(async.share());
f1.wait();
f2.wait();
}
Lazy<size_t> write_msg(AsyncIo &async, SocketHandle &socket, const vespalib::string &msg) {
size_t written = 0;
while (written < msg.size()) {
size_t write_size = (msg.size() - written);
ssize_t write_result = co_await async.write(socket, msg.data() + written, write_size);
if (write_result <= 0) {
co_return written;
}
written += write_result;
}
co_return written;
}
Lazy<vespalib::string> read_msg(AsyncIo &async, SocketHandle &socket, size_t wanted_bytes) {
char tmp[64];
vespalib::string result;
while (result.size() < wanted_bytes) {
size_t read_size = std::min(sizeof(tmp), wanted_bytes - result.size());
ssize_t read_result = co_await async.read(socket, tmp, read_size);
if (read_result <= 0) {
co_return result;
}
result.append(tmp, read_result);
}
co_return result;
}
Work verify_socket_io(AsyncIo &async, SocketHandle &socket, bool is_server) {
vespalib::string server_message = "hello, this is the server speaking";
vespalib::string client_message = "please pick up, I need to talk to you";
if (is_server) {
vespalib::string read = co_await read_msg(async, socket, client_message.size());
EXPECT_EQ(client_message, read);
size_t written = co_await write_msg(async, socket, server_message);
EXPECT_EQ(written, ssize_t(server_message.size()));
} else {
size_t written = co_await write_msg(async, socket, client_message);
EXPECT_EQ(written, ssize_t(client_message.size()));
vespalib::string read = co_await read_msg(async, socket, server_message.size());
EXPECT_EQ(server_message, read);
}
co_return Done{};
}
Work async_server(AsyncIo &async, ServerSocket &server_socket) {
auto server_addr = server_socket.address();
auto server_spec = server_addr.spec();
fprintf(stderr, "listening at '%s' (fd = %d)\n", server_spec.c_str(), server_socket.get_fd());
auto socket = co_await async.accept(server_socket);
fprintf(stderr, "server fd: %d\n", socket.get());
co_return co_await verify_socket_io(async, socket, true);
}
Work async_client(AsyncIo &async, ServerSocket &server_socket) {
auto server_addr = server_socket.address();
auto server_spec = server_addr.spec();
fprintf(stderr, "connecting to '%s'\n", server_spec.c_str());
auto client_addr = SocketSpec(server_spec).client_address();
auto socket = co_await async.connect(client_addr);
fprintf(stderr, "client fd: %d\n", socket.get());
co_return co_await verify_socket_io(async, socket, false);
}
TEST(AsyncIoTest, raw_socket_io) {
ServerSocket server_socket("tcp/0");
server_socket.set_blocking(false);
auto async = AsyncIo::create();
auto f1 = make_future(async_server(async, server_socket));
auto f2 = make_future(async_client(async, server_socket));
f1.wait();
f2.wait();
}
GTEST_MAIN_RUN_ALL_TESTS()
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