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#pragma once
#include <string>
#include <functional>
#include <QString>
#include "storage.h"
/**
* A persistent FIFO message queue.
*/
class MessageQueue {
public:
class Error
{
public:
Error(const std::string &s, int c, const std::string &m)
: store(s), message(m), code(c) {}
std::string store;
std::string message;
int code;
};
MessageQueue(const QString &storageRoot, const QString &name);
void enqueue(void const *msg, size_t size);
//Dequeue a message. This will return a new message everytime called.
//Call the result handler with a success response to remove the message from the store.
//TODO track processing progress to avoid processing the same message with the same preprocessor twice?
void dequeue(const std::function<void(void *ptr, int size, std::function<void(bool success)>)> & resultHandler,
const std::function<void(const Error &error)> &errorHandler);
bool isEmpty();
private:
Akonadi2::Storage mStorage;
};
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