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/*
* (C) Copyright 1996- ECMWF.
*
* This software is licensed under the terms of the Apache Licence Version 2.0
* which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
* In applying this licence, ECMWF does not waive the privileges and immunities
* granted to it by virtue of its status as an intergovernmental organisation nor
* does it submit to any jurisdiction.
*/
#include <algorithm>
#include <array>
#include <cstdlib>
#include <string>
#include <thread>
#include "eckit/io/EasyCURL.h"
#include "eckit/value/Value.h"
#include "eckit/testing/Test.h"
using namespace std;
using namespace eckit;
using namespace eckit::testing;
/*
*
* The following tests take advantage of the Python-based Mock REST API -- see mock/MockREST.py.
* The Mock API is launched during test setup and serves as target for EasyCURL GET/POST/PUT/DELETE calls.
*
*/
namespace {
const std::string BASE_URL = "http://127.0.0.1:49111";
class MockREST {
public:
MockREST() {
// Launch REST API in a (detached) thread
std::thread api(MockREST::launch_rest_api);
api.detach();
// ... give the service some lead time
std::this_thread::sleep_for(std::chrono::seconds(2));
// ... and way for the service initialization
MockREST::wait_for_running_api();
}
~MockREST() {
// Gracefully, request REST API to shut down
MockREST::shutdown_running_api();
}
private:
static void launch_rest_api() { std::system("MockREST.launcher.sh"); }
static void wait_for_running_api() {
auto curl = EasyCURL();
curl.verbose(true);
for (size_t attempt = 0; attempt < 30; ++attempt) {
try {
auto response = curl.GET(BASE_URL + "/ping");
if (response.code() == 200) {
// Got a ping! We're done...
return;
}
}
catch (const SeriousBug& error) {
// Unable to connect to server! Must retry...
}
std::this_thread::sleep_for(std::chrono::seconds(1));
}
// Enough! Let's give up...
throw std::runtime_error("Unable to start Mock REST API");
}
static void shutdown_running_api() {
auto curl = EasyCURL();
try {
auto response = curl.GET(BASE_URL + "/shutdown");
}
catch (const SeriousBug& error) {
// Nothing to do...
}
}
};
namespace impl {
template <class T, std::size_t N, std::size_t... I>
constexpr std::array<std::remove_cv_t<T>, N> make_array(T (&a)[N], std::index_sequence<I...>) {
return {{std::move(a[I])...}};
}
template <typename T, size_t N>
std::array<T, N> make_array(const T (&values)[N]) {
return make_array(values, std::make_index_sequence<N>{});
}
} // namespace impl
std::string make_random_token(size_t length) {
auto randomize = []() -> char {
static std::array selected = impl::make_array("0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz");
return selected[rand() % (selected.size() - 1)];
};
std::string str(length, 0);
std::generate_n(str.begin(), length, randomize);
return str;
}
std::string make_blob(std::string_view key, std::string_view value) {
std::ostringstream oss;
oss << R"({"key": ")" << key << R"(", "value": ")" << value << R"("})";
return oss.str();
}
} // namespace
namespace eckit {
namespace test {
//----------------------------------------------------------------------------------------------------------------------
CASE("EasyCURL GET (Successful operation)") {
auto curl = EasyCURL();
auto response = curl.GET(BASE_URL + "/ping");
EXPECT(response.code() == 200);
EXPECT(response.body() == "Hi!");
}
CASE("EasyCURL GET (Not Found)") {
auto curl = EasyCURL();
auto response = curl.GET(BASE_URL + "/ping__NOT-FOUND");
EXPECT(response.code() == 404);
EXPECT(response.body().find("Not Found") != std::string::npos);
}
CASE("EasyCURL GET (REST API, Successful operation)") {
auto curl = EasyCURL();
auto response = curl.GET(BASE_URL + "/blobs");
EXPECT(response.code() == 200);
EXPECT(response.body() == "{}\n");
}
CASE("EasyCURL GET (REST API, Insufficient permissions)") {
auto curl = EasyCURL();
auto response = curl.GET(BASE_URL + "/insufficient-permissions");
EXPECT(response.code() == 403);
EXPECT(response.body() == "Forbidden");
}
CASE("EasyCURL PUT (REST API, Create+Update+Delete new entity)") {
EasyCURLHeaders headers;
headers["content-type"] = "application/json";
auto curl = EasyCURL();
curl.headers(headers);
std::string key = make_random_token(8);
std::string original_value = make_random_token(64);
{
auto blob = make_blob(key, original_value);
auto response = curl.POST(BASE_URL + "/blob", blob);
EXPECT(response.code() == 201);
EXPECT(response.body().find(original_value) != std::string::npos);
}
{
auto response = curl.GET(BASE_URL + "/blob/" + key + "/content");
EXPECT(response.code() == 200);
EXPECT(response.body() == original_value);
}
std::string updated_value = make_random_token(64);
{
auto blob = make_blob(key, updated_value);
auto response = curl.PUT(BASE_URL + "/blob", blob);
EXPECT(response.code() == 200);
EXPECT(response.body().find(updated_value) != std::string::npos);
}
{
auto response = curl.GET(BASE_URL + "/blob/" + key + "/content");
EXPECT(response.code() == 200);
EXPECT(response.body() == updated_value);
}
{
auto response = curl.DELETE(BASE_URL + "/blob/" + key);
EXPECT(response.code() == 204);
EXPECT(response.body().empty());
}
{
auto response = curl.GET(BASE_URL + "/blob/" + key + "/content");
EXPECT(response.code() == 404);
EXPECT(response.body().find("Not Found") != std::string::npos);
}
}
//----------------------------------------------------------------------------------------------------------------------
} // namespace test
} // namespace eckit
int main(int argc, char** argv) {
MockREST mock_rest_api_running_in_background;
return run_tests(argc, argv);
}
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