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#pragma once
#include "data_types.hpp"
namespace phosphor
{
namespace dbus
{
namespace monitoring
{
/** @class Callback
* @brief Callback interface.
*
* Callbacks of any type can be run.
*/
class Callback
{
public:
Callback() = default;
Callback(const Callback&) = delete;
Callback(Callback&&) = default;
Callback& operator=(const Callback&) = delete;
Callback& operator=(Callback&&) = default;
virtual ~Callback() = default;
/** @brief Run the callback. */
virtual void operator()() = 0;
};
/** @class IndexedCallback
* @brief Callback with an index.
*/
class IndexedCallback : public Callback
{
public:
IndexedCallback() = delete;
IndexedCallback(const IndexedCallback&) = delete;
IndexedCallback(IndexedCallback&&) = default;
IndexedCallback& operator=(const IndexedCallback&) = delete;
IndexedCallback& operator=(IndexedCallback&&) = default;
virtual ~IndexedCallback() = default;
explicit IndexedCallback(const PropertyIndex& callbackIndex)
: Callback(), index(callbackIndex) {}
/** @brief Run the callback. */
virtual void operator()() override = 0;
protected:
/** @brief Property names and their associated storage. */
const PropertyIndex& index;
};
/** @class GroupOfCallbacks
* @brief Invoke multiple callbacks.
*
* A group of callbacks is implemented as a vector of array indicies
* into an external array of callbacks. The group function call
* operator traverses the vector of indicies, invoking each
* callback.
*
* @tparam CallbackAccess - Access to the array of callbacks.
*/
template <typename CallbackAccess>
class GroupOfCallbacks : public Callback
{
public:
GroupOfCallbacks() = delete;
GroupOfCallbacks(const GroupOfCallbacks&) = delete;
GroupOfCallbacks(GroupOfCallbacks&&) = default;
GroupOfCallbacks& operator=(const GroupOfCallbacks&) = delete;
GroupOfCallbacks& operator=(GroupOfCallbacks&&) = default;
~GroupOfCallbacks() = default;
explicit GroupOfCallbacks(
const std::vector<size_t>& graphEntry)
: graph(graphEntry) {}
/** @brief Run the callbacks. */
void operator()() override
{
for (auto e : graph)
{
(*CallbackAccess::get()[e])();
}
}
private:
/** @brief The offsets of the callbacks in the group. */
const std::vector<size_t>& graph;
};
} // namespace monitoring
} // namespace dbus
} // namespace phosphor
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