lluseroperation.h

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#ifndef LL_LLUSEROPERATION_H
#define LL_LLUSEROPERATION_H

#include "lluuid.h"
#include "llframetimer.h"

#include <map>

class LLUserOperation
{
public:
        LLUserOperation(const LLUUID& agent_id);
        LLUserOperation(const LLUUID& agent_id, const LLUUID& transaction_id);
        virtual ~LLUserOperation();

        const LLUUID& getTransactionID() const { return mTransactionID; }
        const LLUUID& getAgentID() const { return mAgentID; }

        // Operation never got necessary data, so expired       
        virtual BOOL isExpired();

        // ability to mark this operation as never expiring.
        void SetNoExpireFlag(const BOOL flag);

        // Send request to the dataserver
        virtual void sendRequest() = 0;

        // Run the operation. This will only be called in the case of an
        // actual success or failure of the operation.
        virtual BOOL execute(BOOL transaction_success) = 0;     

        // This method is called when the user op has expired, and is
        // about to be deleted by the manager. This gives the user op the
        // ability to nack someone when the user op is never evaluated
        virtual void expire();

protected:
        LLUserOperation();
        
protected:
        LLUUID mAgentID;
        LLUUID mTransactionID;
        LLFrameTimer mTimer;
        BOOL   mNoExpire;                       // this is used for operations that expect an answer and will wait till it gets one. 
};


class LLUserOperationMgr
{
public:
        LLUserOperationMgr();
        ~LLUserOperationMgr();

        void addOperation(LLUserOperation* op);
        LLUserOperation* findOperation(const LLUUID& transaction_id);
        BOOL deleteOperation(LLUserOperation* op);

        // Call this method every once in a while to clean up old
        // transactions.
        void deleteExpiredOperations();
        
private:
        typedef std::map<LLUUID, LLUserOperation*> user_operation_list_t;
        user_operation_list_t mUserOperationList;
        LLUUID mLastOperationConsidered;
};

extern LLUserOperationMgr* gUserOperationMgr;

#endif // LL_LLUSEROPERATION_H

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