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/*
 * @(#)ProducerFlow.hpp	1.4 06/26/07
 */ 

#ifndef PRODUCERFLOW_HPP
#define PRODUCERFLOW_HPP


#include "Message.hpp"
#include "../basictypes/Object.hpp"
#include "../basictypes/Monitor.hpp"

class Message;

enum FlowState { UNDER_LIMIT, ON_LIMIT, OVER_LIMIT };

/**
 *
 */
class ProducerFlow : public Object {
private:
  PRInt64 producerID;
  Long producerIDLong; //for logging efficiency only 

  //after sending this many bytes the  producer should pause the flow
  PRInt64 chunkBytes;

  //after sending this many messages the producer should pause the flow
  PRInt32 chunkSize; 

  PRInt32 sentCount;
  PRInt32 references;

  PRBool  isClosed;
  MQError closeReason;

  Monitor        monitor;

  FlowState checkFlowLimit();

public:
  ProducerFlow();
  virtual ~ProducerFlow();

  void setProducerID(PRInt64 producerIDArg);
  void setChunkSize(PRInt32 chunkSizeArg);
  void setChunkBytes(PRInt64 chunkBytesArg);

  PRInt64 getProducerID() const;

  MQError checkFlowControl(Message * message);

  void resumeFlow(PRInt64 chunkBytes, PRInt32 chunkSize);

  MQError acquireReference();
  PRBool releaseReference();


  void close(MQError reason);

//
// Avoid all implicit shallow copies.  Without these, the compiler
// will automatically define implementations for us.
//
private:
  //
  // These are not supported and are not implemented
  //
  ProducerFlow(const ProducerFlow& producerFlow);
  ProducerFlow& operator=(const ProducerFlow& producerFlow);
  
};

#endif  // PRODUCERFLOW_HPP