library_manager_collection.h

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// Copyright (C) 2013-2023 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(bool multi_threading_enabled = false);
 
    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 multi_threading_enabled = false);
 
    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