fsfw/datapoollocal/HasLocalDataPoolIF.h

168 lines
6.0 KiB
C++

#ifndef FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_
#define FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_
#include "ProvidesDataPoolSubscriptionIF.h"
#include "locPoolDefinitions.h"
#include "../datapool/PoolEntryIF.h"
#include "../serviceinterface/ServiceInterface.h"
#include "../ipc/MessageQueueSenderIF.h"
#include "../housekeeping/HousekeepingMessage.h"
#include <map>
class LocalDataPoolManager;
class LocalPoolDataSetBase;
class LocalPoolObjectBase;
using LocalDataPool = std::map<lp_id_t, PoolEntryIF*>;
using LocalDataPoolMapIter = LocalDataPool::iterator;
/**
* @brief This interface is implemented by classes which posses a local
* data pool (not the managing class). It defines the relationship
* between the local data pool owner and the LocalDataPoolManager.
* @details
* Any class implementing this interface shall also have a LocalDataPoolManager
* member class which contains the actual pool data structure
* and exposes the public interface for it.
* This is required because the pool entries are templates, which makes
* specifying an interface rather difficult. The local data pool can be
* accessed by using the LocalPoolVariable, LocalPoolVector or LocalDataSet
* classes.
*
* Architectural Note:
* This could be circumvented by using a wrapper/accessor function or
* implementing the templated function in this interface..
* The first solution sounds better than the second but
* the LocalPoolVariable classes are templates as well, so this just shifts
* the problem somewhere else. Interfaces are nice, but the most
* pragmatic solution I found was to offer the client the full interface
* of the LocalDataPoolManager.
*/
class HasLocalDataPoolIF {
friend class LocalDataPoolManager;
friend class LocalPoolDataSetBase;
friend class LocalPoolObjectBase;
public:
virtual~ HasLocalDataPoolIF() {};
static constexpr uint8_t INTERFACE_ID = CLASS_ID::LOCAL_POOL_OWNER_IF;
static constexpr ReturnValue_t POOL_ENTRY_NOT_FOUND = MAKE_RETURN_CODE(0x00);
static constexpr ReturnValue_t POOL_ENTRY_TYPE_CONFLICT = MAKE_RETURN_CODE(0x01);
static constexpr uint32_t INVALID_LPID = localpool::INVALID_LPID;
virtual object_id_t getObjectId() const = 0;
/** Command queue for housekeeping messages. */
virtual MessageQueueId_t getCommandQueue() const = 0;
/**
* Is used by pool owner to initialize the pool map once
* The manager instance shall also be passed to this function.
* It can be used to subscribe for periodic packets for for updates.
*/
virtual ReturnValue_t initializeLocalDataPool(
LocalDataPool& localDataPoolMap,
LocalDataPoolManager& poolManager) = 0;
/**
* Returns the minimum sampling frequency in milliseconds, which will
* usually be the period the pool owner performs its periodic operation.
* @return
*/
virtual uint32_t getPeriodicOperationFrequency() const = 0;
/**
* @brief This function will be called by the manager if an update
* notification is received.
* @details HasLocalDataPoolIF
* Can be overriden by the child class to handle changed datasets.
* @param sid
* @param storeId If a snapshot was requested, data will be located inside
* the IPC store with this store ID.
*/
virtual void handleChangedDataset(sid_t sid,
store_address_t storeId = storeId::INVALID_STORE_ADDRESS) {
return;
}
/**
* @brief This function will be called by the manager if an update
* notification is received.
* @details
* Can be overriden by the child class to handle changed pool IDs.
* @param sid
* @param storeId If a snapshot was requested, data will be located inside
* the IPC store with this store ID.
*/
virtual void handleChangedPoolVariable(lp_id_t poolId,
store_address_t storeId = storeId::INVALID_STORE_ADDRESS) {
return;
}
/**
* These function can be implemented by pool owner, if they are required
* and used by the housekeeping message interface.
* */
virtual ReturnValue_t addDataSet(sid_t sid) {
return HasReturnvaluesIF::RETURN_FAILED;
};
virtual ReturnValue_t removeDataSet(sid_t sid) {
return HasReturnvaluesIF::RETURN_FAILED;
};
virtual ReturnValue_t changeCollectionInterval(sid_t sid,
float newIntervalSeconds) {
return HasReturnvaluesIF::RETURN_FAILED;
};
/**
* This function can be used by data pool consumers to retrieve a handle
* which allows subscriptions to dataset and variable updates.
* @return
*/
virtual ProvidesDataPoolSubscriptionIF* getSubsciptionInterface() = 0;
protected:
/**
* Can be used to get a handle to the local data pool manager.
* This function is protected because it should only be used by the
* class imlementing the interface.
*/
virtual LocalDataPoolManager* getHkManagerHandle() = 0;
/**
* This function is used by the pool manager to get a valid dataset
* from a SID. This function is protected to prevent users from
* using raw data set pointers which could not be thread-safe. Users
* should use the #ProvidesDataPoolSubscriptionIF.
* @param sid Corresponding structure ID
* @return
*/
virtual LocalPoolDataSetBase* getDataSetHandle(sid_t sid) = 0;
/**
* Similar to the function above, but used to get a local pool variable
* handle. This is only needed for update notifications, so it is not
* defined as abstract. This function is protected to prevent users from
* using raw pool variable pointers which could not be thread-safe.
* Users should use the #ProvidesDataPoolSubscriptionIF.
* @param localPoolId
* @return
*/
virtual LocalPoolObjectBase* getPoolObjectHandle(lp_id_t localPoolId) {
#if FSFW_CPP_OSTREAM_ENABLED == 1
sif::warning << "HasLocalDataPoolIF::getPoolObjectHandle: Not overriden"
<< ". Returning nullptr!" << std::endl;
#else
fsfw::printWarning("HasLocalDataPoolIF::getPoolObjectHandle: "
"Not overriden. Returning nullptr!\n");
#endif
return nullptr;
}
};
#endif /* FSFW_DATAPOOLLOCAL_HASLOCALDATAPOOLIF_H_ */