/*
 * (C) Copyright 1996- ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 * In applying this licence, ECMWF does not waive the privileges and immunities
 * granted to it by virtue of its status as an intergovernmental organisation nor
 * does it submit to any jurisdiction.
 */

// File Configurable.h
// Baudouin Raoult - ECMWF May 96

#ifndef eckit_Configurable_h
#define eckit_Configurable_h

#include "eckit/container/ClassExtent.h"
#include "eckit/thread/Mutex.h"

//-----------------------------------------------------------------------------

namespace eckit {

//-----------------------------------------------------------------------------

class Url;
class ResourceBase;

class Configurable : public ClassExtent<Configurable> {
public:

// -- Contructors

	Configurable();

// -- Destructor

	virtual ~Configurable();
// -- Class methods

	static void reconfigureAll();  // Config file as changed, update
	static void dumpAllResources(std::ostream&); // Dump the configuration to a file
    static void htmlAllResources(std::ostream&,Url&);

    /// @returns the name of the class
    virtual std::string kind() const  { return "Configurable"; }
    /// @returns the name of the instance
    virtual std::string name() const  { return "Unknown"; }

protected:

// -- Methods

    virtual void reconfigure() = 0;


private:

	friend class ResourceBase;

// -- Members

    typedef std::set<ResourceBase*> Set;
    Mutex mutex_;
	Set resources_;

// -- Methods

	void add(ResourceBase*);    // Add a resource
	void remove(ResourceBase*); // Remove a resource

	void resetResources();
	void dumpResources(std::ostream&) const;       // Dump all resources to a stream
    void htmlResources(std::ostream&,Url&);

};

//-----------------------------------------------------------------------------

} // namespace eckit

#endif

