library_manager_collection.h

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// Copyright (C) 2013-2020 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 LIBRARY_MANAGER_COLLECTION_H
#define LIBRARY_MANAGER_COLLECTION_H

#include <exceptions/exceptions.h>

#include <boost/shared_ptr.hpp>
#include <hooks/libinfo.h>

#include <vector>

namespace isc {
namespace hooks {

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


// Forward declarations
class CalloutManager;
class LibraryManager;


class LibraryManagerCollection {
public:
    LibraryManagerCollection(const HookLibsCollection& libraries);

    ~LibraryManagerCollection() {
        static_cast<void>(unloadLibraries());
    }

    bool loadLibraries();

    boost::shared_ptr<CalloutManager> getCalloutManager() const;

    std::vector<std::string> getLibraryNames() const {
        return (library_names_);
    }

    HookLibsCollection getLibraryInfo() const {
        return (library_info_);
    }

    int getLoadedLibraryCount() const;

    static std::vector<std::string>
    validateLibraries(const std::vector<std::string>& libraries);

    bool prepareUnloadLibraries();

protected:
    void unloadLibraries();

private:

    std::vector<std::string>                        library_names_;

    std::vector<boost::shared_ptr<LibraryManager> > lib_managers_;

    HookLibsCollection                              library_info_;

    boost::shared_ptr<CalloutManager>               callout_manager_;
};

} // namespace hooks
} // namespace isc


#endif // LIBRARY_MANAGER_COLLECTION_H