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#include "../fixtures/util.hpp"
#include "mock_file_source.hpp"
#include <mbgl/util/io.hpp>
#include <mbgl/util/thread.hpp>
#include <mbgl/util/timer.hpp>
#include <algorithm>
#include <unordered_map>
namespace mbgl {
class MockFileRequest : public FileRequest {
public:
MockFileRequest(const Resource& resource_,
MockFileSource& fileSource_)
: resource(resource_),
fileSource(fileSource_) {
}
~MockFileRequest() {
fileSource.cancel(this);
}
Resource resource;
MockFileSource& fileSource;
std::unique_ptr<WorkRequest> workRequest;
};
class MockFileSource::Impl {
public:
Impl(Type type, const std::string& match)
: type_(type), match_(match) {
timer_.start(std::chrono::milliseconds(1000), std::chrono::milliseconds(1000), [this] { dispatchPendingRequests(); });
timer_.unref();
}
~Impl() {
timer_.stop();
}
void setOnRequestDelayedCallback(std::function<void(void)> callback) {
requestEnqueuedCallback_ = callback;
}
void handleRequest(FileRequest*, Resource, Callback);
void cancelRequest(FileRequest*);
private:
void replyWithSuccess(Resource, Callback) const;
void replyWithSuccessWithDelay(FileRequest*, Resource, Callback);
void replyWithFailure(Resource, Callback) const;
void replyWithCorruptedData(Resource, Callback) const;
void dispatchPendingRequests();
Type type_;
std::string match_;
std::unordered_map<FileRequest*, std::pair<Resource, Callback>> pendingRequests_;
util::Timer timer_;
std::function<void(void)> requestEnqueuedCallback_;
};
void MockFileSource::Impl::replyWithSuccess(Resource resource, Callback callback) const {
Response res;
try {
res.data = std::make_shared<const std::string>(util::read_file(resource.url));
} catch (const std::exception& err) {
res.error = std::make_unique<Response::Error>(Response::Error::Reason::Other, err.what());
}
callback(res);
}
void MockFileSource::Impl::replyWithSuccessWithDelay(FileRequest* req, Resource resource, Callback callback) {
if (resource.url.find(match_) == std::string::npos) {
replyWithSuccess(resource, callback);
return;
}
pendingRequests_.emplace(req, std::make_pair(resource, callback));
requestEnqueuedCallback_();
}
void MockFileSource::Impl::replyWithFailure(Resource resource, Callback callback) const {
if (resource.url.find(match_) == std::string::npos) {
replyWithSuccess(resource, callback);
return;
}
Response res;
res.error = std::make_unique<Response::Error>(Response::Error::Reason::Other, "Failed by the test case");
callback(res);
}
void MockFileSource::Impl::replyWithCorruptedData(Resource resource, Callback callback) const {
if (resource.url.find(match_) == std::string::npos) {
replyWithSuccess(resource, callback);
return;
}
Response res;
auto data = std::make_shared<std::string>(util::read_file(resource.url));
data->insert(0, "CORRUPTED");
res.data = std::move(data);
callback(res);
}
void MockFileSource::Impl::handleRequest(FileRequest* req, Resource resource, Callback callback) {
switch (type_) {
case Type::Success:
replyWithSuccess(resource, callback);
break;
case Type::SuccessWithDelay:
replyWithSuccessWithDelay(req, resource, callback);
break;
case Type::RequestFail:
replyWithFailure(resource, callback);
break;
case Type::RequestWithCorruptedData:
replyWithCorruptedData(resource, callback);
break;
default:
EXPECT_TRUE(false) << "Should never be reached.";
}
}
void MockFileSource::Impl::cancelRequest(FileRequest* req) {
pendingRequests_.erase(req);
}
void MockFileSource::Impl::dispatchPendingRequests() {
for (auto& pair : pendingRequests_) {
replyWithSuccess(pair.second.first, pair.second.second);
}
pendingRequests_.clear();
}
MockFileSource::MockFileSource(Type type, const std::string& match)
: thread_(std::make_unique<util::Thread<Impl>>(util::ThreadContext{"FileSource", util::ThreadType::Unknown, util::ThreadPriority::Low}, type, match)) {
}
void MockFileSource::setOnRequestDelayedCallback(std::function<void(void)> callback) {
thread_->invokeSync(&Impl::setOnRequestDelayedCallback, callback);
}
std::unique_ptr<FileRequest> MockFileSource::request(const Resource& res, Callback callback) {
auto req = std::make_unique<MockFileRequest>(res, *this);
req->workRequest = thread_->invokeWithCallback(&Impl::handleRequest, callback, req.get(), res);
return std::move(req);
}
void MockFileSource::cancel(FileRequest* req) {
thread_->invoke(&Impl::cancelRequest, req);
}
} // namespace mbgl
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