server_hooks.h

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// Copyright (C) 2013-2018 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#ifndef SERVER_HOOKS_H
#define SERVER_HOOKS_H

#include <exceptions/exceptions.h>
#include <hooks/parking_lots.h>

#include <boost/noncopyable.hpp>
#include <boost/shared_ptr.hpp>

#include <map>
#include <string>
#include <vector>

namespace isc {
namespace hooks {

class DuplicateHook : public Exception {
public:
    DuplicateHook(const char* file, size_t line, const char* what) :
        isc::Exception(file, line, what) {}
};

class NoSuchHook : public Exception {
public:
    NoSuchHook(const char* file, size_t line, const char* what) :
        isc::Exception(file, line, what) {}
};

class ServerHooks;
typedef boost::shared_ptr<ServerHooks> ServerHooksPtr;


class ServerHooks : public boost::noncopyable {
public:

    static const int CONTEXT_CREATE = 0;
    static const int CONTEXT_DESTROY = 1;

    void reset();

    int registerHook(const std::string& name);

    std::string getName(int index) const;

    int getIndex(const std::string& name) const;

    int findIndex(const std::string& name) const;

    int getCount() const {
        return (hooks_.size());
    }

    std::vector<std::string> getHookNames() const;

    static ServerHooks& getServerHooks();

    static ServerHooksPtr getServerHooksPtr();

    ParkingLotsPtr getParkingLotsPtr() const;

    ParkingLotPtr getParkingLotPtr(const int hook_index);

    ParkingLotPtr getParkingLotPtr(const std::string& hook_name);

    static std::string commandToHookName(const std::string& command_name);

    static std::string hookToCommandName(const std::string& hook_name);

private:
    ServerHooks();

    void initialize();

    typedef std::map<std::string, int> HookCollection;
    typedef std::map<int, std::string> InverseHookCollection;

    HookCollection  hooks_;                 
    InverseHookCollection inverse_hooks_;   

    ParkingLotsPtr parking_lots_;
};

} // namespace util
} // namespace isc

#endif  // SERVER_HOOKS_H