private_recommendations_data_packing/main.cpp

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/*
SeComLib
Copyright 2012-2013 TU Delft, Information Security & Privacy Lab (http://isplab.tudelft.nl/)

Contributors:
Inald Lagendijk (R.L.Lagendijk@TUDelft.nl)
Mihai Todor (todormihai@gmail.com)
Thijs Veugen (P.J.M.Veugen@tudelft.nl)
Zekeriya Erkin (z.erkin@tudelft.nl)

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
#include "main.h"

int main (int argc, char *argv[]) {
    try {
        //the first command line parameter always contains the name of the application
        if (argc > 1) {
            //a custom configuration file was specified
            Utils::Config::SetConfigFile(std::string(argv[1]));
        }

        std::cout << Utils::DateTime::Now() << ": Starting simulation." << std::endl << std::endl;

        std::shared_ptr<PrivacyServiceProvider> privacyServiceProvider = std::make_shared<PrivacyServiceProvider>();
        std::shared_ptr<ServiceProvider> serviceProvider = std::make_shared<ServiceProvider>(privacyServiceProvider->GetPaillierPublicKey(), privacyServiceProvider->GetDgkPublicKey());
        serviceProvider->SetPrivacyServiceProvider(privacyServiceProvider);
        privacyServiceProvider->SetServiceProvider(serviceProvider);

        std::cout << Utils::DateTime::Now() << ": Finished initializing servers." << std::endl << std::endl;

        //compute the initial packed sparse items
        Client client(serviceProvider, privacyServiceProvider, privacyServiceProvider->GetPaillierPublicKey());

        std::cout << Utils::DateTime::Now() << ": Finished encrypting client data." << std::endl << std::endl;

        serviceProvider->GenerateDummyDatabase(client.GetNormalizedScaledRatings());

        std::cout << Utils::DateTime::Now() << ": Finished computing [V_c] for every user." << std::endl << std::endl;

        serviceProvider->ComputeSimilarityValues(client.GetNormalizedScaledRatings());

        std::cout << Utils::DateTime::Now() << ": Finished computing the similarity values and Gamma." << std::endl << std::endl;

        serviceProvider->ComputeUserRecommendations(client.GetSparseRatings());

        std::cout << Utils::DateTime::Now() << ": Finished pre-computing recommendations for all users." << std::endl << std::endl;

        client.ComputeRecommendations();

        std::cout << std::endl << Utils::DateTime::Now() << ": Finished simulation." << std::endl << std::endl;
    }
    catch (const std::runtime_error &exception) {
        std::cout << exception.what() << std::endl;
    }
    catch (const std::exception &exception) {
        std::cout << exception.what() << std::endl;
    }
    //it won't catch low level exceptions, like division by 0, produced by GMP...
    catch (...) {
        std::cout << "Unexpected exception occured." << std::endl;
    }
    
    return 0;
}