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/*
* This file is open source software, licensed to you under the terms
* of the Apache License, Version 2.0 (the "License"). See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. You may not use this file except in compliance with the License.
*
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
/*
* Copyright 2024 ScyllaDB
*/
#include "loopback_socket.hh"
#include <seastar/core/metrics.hh>
#include <seastar/core/prometheus.hh>
#include <seastar/http/common.hh>
#include <seastar/testing/test_case.hh>
#include <seastar/testing/thread_test_case.hh>
#include <seastar/util/closeable.hh>
#include <boost/test/tools/old/interface.hpp>
using namespace seastar;
using namespace httpd;
using namespace std::literals;
namespace {
struct test_metrics {
metrics::metric_groups _metrics;
void setup_metrics() {
auto somelabel = metrics::label("somekey");
_metrics.add_group("aaaa", {
metrics::make_gauge("escaped_label_value_test", [] { return 10; }, metrics::description{"test that special characters are escaped"}, {somelabel(R"(special"\nvalue)")}),
metrics::make_gauge("int_test", [] { return 10; }, metrics::description{"simple minimal test"}),
metrics::make_gauge("double_test", [] { return 1234567654321.0; }, metrics::description{"test that a long double is printed fully and not in scientific notation"}),
metrics::make_counter("counter_test", [] () -> int64_t { return 1234567654321; }, metrics::description{"test with a long counter value"}),
});
}
};
future<> test_prometheus_metrics_body() {
test_metrics metrics;
metrics.setup_metrics();
co_await seastar::async([] {
loopback_connection_factory lcf(1);
http_server server("test");
loopback_socket_impl lsi(lcf);
httpd::http_server_tester::listeners(server).emplace_back(lcf.get_server_socket());
prometheus::config ctx;
add_prometheus_routes(server, ctx).get();
future<> client = seastar::async([&lsi] {
connected_socket c_socket = lsi.connect(socket_address(ipv4_addr()), socket_address(ipv4_addr())).get();
input_stream<char> input(c_socket.input());
auto close_input = deferred_close(input);
output_stream<char> output(c_socket.output());
auto close_output = deferred_close(output);
output.write(sstring("GET /metrics HTTP/1.1\r\nHost: test\r\n\r\n")).get();
output.flush().get();
auto resp = input.read().get();
auto resp_str = std::string(resp.get(), resp.size());
BOOST_REQUIRE(std::ranges::search(resp_str, "200 OK"sv));
BOOST_REQUIRE_MESSAGE(std::ranges::search(resp_str, R"(seastar_aaaa_escaped_label_value_test{shard="0",somekey="special\"\\nvalue"} 10.000000)"sv), "Response: " + resp_str);
BOOST_REQUIRE_MESSAGE(std::ranges::search(resp_str, R"(seastar_aaaa_int_test{shard="0"} 10.000000)"sv), "Response: " + resp_str);
BOOST_REQUIRE_MESSAGE(std::ranges::search(resp_str, R"(seastar_aaaa_double_test{shard="0"} 1234567654321.000000)"sv), "Response: " + resp_str);
BOOST_REQUIRE_MESSAGE(std::ranges::search(resp_str, R"(seastar_aaaa_counter_test{shard="0"} 1234567654321)"sv), "Response: " + resp_str);
});
server.do_accepts(0).get();
client.get();
server.stop().get();
});
}
}
SEASTAR_TEST_CASE(test_prometheus_metrics) {
return test_prometheus_metrics_body();
}
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