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#ifndef MBGL_STORAGE_BASE_REQUEST
#define MBGL_STORAGE_BASE_REQUEST
#include <mbgl/storage/request_callback.hpp>
#include <mbgl/util/ptr.hpp>
#include <string>
#include <forward_list>
#include <functional>
#include <thread>
typedef struct uv_loop_s uv_loop_t;
typedef struct uv_async_s uv_async_t;
namespace mbgl {
class Response;
class Request;
class BaseRequest {
private:
// Make noncopyable and immovable
BaseRequest(const BaseRequest &) = delete;
BaseRequest(BaseRequest &&) = delete;
BaseRequest& operator=(const BaseRequest &) = delete;
BaseRequest& operator=(BaseRequest &&) = delete;
public:
BaseRequest(const std::string &path);
virtual ~BaseRequest();
Callback *add(Callback &&callback, const util::ptr<BaseRequest> &request);
void remove(Callback *callback);
// Must be called by subclasses when a valid Response object is available. It will notify
// all listeners.
void notify();
// This function is called when the request ought to be stopped. Any subclass must make sure this
// is also called in its destructor. Calling this function repeatedly must be safe.
// This function must call notify().
virtual void cancel() = 0;
// This function is called when the request should be reattempted immediately. This is typically
// reaction to a network status change.
virtual void retryImmediately();
public:
const std::thread::id thread_id;
const std::string path;
std::unique_ptr<Response> response;
protected:
// This object may hold a shared_ptr to itself. It does this to prevent destruction of this object
// while a request is in progress.
util::ptr<BaseRequest> self;
std::forward_list<std::unique_ptr<Callback>> callbacks;
};
}
#endif
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