Context.h

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//=============================================================================
//  Computational Process Networks class library
//  Copyright (C) 1997-2006  Gregory E. Allen and The University of Texas
//
//  This library is free software; you can redistribute it and/or modify it
//  under the terms of the GNU Library General Public License as published
//  by the Free Software Foundation; either version 2 of the License, or
//  (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Library General Public License for more details.
//
//  The GNU Public License is available in the file LICENSE, or you
//  can write to the Free Software Foundation, Inc., 59 Temple Place -
//  Suite 330, Boston, MA 02111-1307, USA, or you can find it on the
//  World Wide Web at http://www.fsf.org.
//=============================================================================
#ifndef CPNDB_CONTEXT_H
#define CPNDB_CONTEXT_H
#pragma once
#include <cpn/common.h>
#include <cpn/utils/Logger.h>
#include <string>

namespace CPN {

    class CPN_API Context : public LoggerOutput {
    public:

        static shared_ptr<Context> Local();

        virtual ~Context();

        virtual Key_t SetupKernel(const std::string &name, const std::string &hostname,
                const std::string &servname, KernelBase *kernel) = 0;
        virtual Key_t SetupKernel(const std::string &name, KernelBase *kernel) = 0;
        virtual Key_t GetKernelKey(const std::string &kernel) = 0;
        virtual std::string GetKernelName(Key_t kernelkey) = 0;
        virtual void GetKernelConnectionInfo(Key_t kernelkey, std::string &hostname, std::string &servname) = 0;
        virtual void SignalKernelEnd(Key_t kernelkey) = 0;
        virtual Key_t WaitForKernelStart(const std::string &kernel) = 0;
        virtual void SignalKernelStart(Key_t kernelkey) = 0;

        virtual void SendCreateWriter(Key_t kernelkey, const SimpleQueueAttr &attr) = 0;
        virtual void SendCreateReader(Key_t kernelkey, const SimpleQueueAttr &attr) = 0;
        virtual void SendCreateQueue(Key_t kernelkey, const SimpleQueueAttr &attr) = 0;
        virtual void SendCreateNode(Key_t kernelkey, const NodeAttr &attr) = 0;

        virtual Key_t CreateNodeKey(Key_t kernelkey, const std::string &nodename) = 0;
        virtual Key_t GetNodeKey(const std::string &nodename) = 0;
        virtual std::string GetNodeName(Key_t nodekey) = 0;
        virtual Key_t GetNodeKernel(Key_t nodekey) = 0;
        virtual void SignalNodeStart(Key_t nodekey) = 0;
        virtual void SignalNodeEnd(Key_t nodekey) = 0;

        virtual Key_t WaitForNodeStart(const std::string &nodename) = 0;
        virtual void WaitForNodeEnd(const std::string &nodename) = 0;
        virtual void WaitForAllNodeEnd() = 0;


        virtual Key_t GetCreateReaderKey(Key_t nodekey, const std::string &portname) = 0;
        virtual Key_t GetReaderNode(Key_t portkey) = 0;
        virtual Key_t GetReaderKernel(Key_t portkey) = 0;
        virtual std::string GetReaderName(Key_t portkey) = 0;

        virtual Key_t GetCreateWriterKey(Key_t nodekey, const std::string &portname) = 0;
        virtual Key_t GetWriterNode(Key_t portkey) = 0;
        virtual Key_t GetWriterKernel(Key_t portkey) = 0;
        virtual std::string GetWriterName(Key_t portkey) = 0;

        virtual void ConnectEndpoints(Key_t writerkey, Key_t readerkey, const std::string &qname) = 0;
        virtual Key_t GetReadersWriter(Key_t readerkey) = 0;
        virtual Key_t GetWritersReader(Key_t writerkey) = 0;

        virtual void Terminate() = 0;
        virtual bool IsTerminated() = 0;

        void CheckTerminated();

        virtual bool RequireRemote();

        virtual unsigned CalculateGrowSize(unsigned currentsize, unsigned request) { return currentsize + request; }

    protected:
        Context();

    };

}

#endif