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1 /**
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2 * Advanced authorization plugin for Orthanc
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3 * Copyright (C) 2017-2023 Osimis S.A., Belgium
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4 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium
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5 *
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6 * This program is free software: you can redistribute it and/or
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7 * modify it under the terms of the GNU Affero General Public License
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8 * as published by the Free Software Foundation, either version 3 of
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9 * the License, or (at your option) any later version.
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10 *
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11 * This program is distributed in the hope that it will be useful, but
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12 * WITHOUT ANY WARRANTY; without even the implied warranty of
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13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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14 * Affero General Public License for more details.
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15 *
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16 * You should have received a copy of the GNU Affero General Public License
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17 * along with this program. If not, see <http://www.gnu.org/licenses/>.
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18 **/
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19
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20 #pragma once
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21
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22 #include "ICacheFactory.h"
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32
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23
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24 #include <Cache/LeastRecentlyUsedIndex.h>
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1
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25
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26 #include <boost/thread/mutex.hpp>
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27
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28 namespace OrthancPlugins
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29 {
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30 class MemoryCache : public ICache
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31 {
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32 public:
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33 class Factory : public ICacheFactory
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34 {
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35 private:
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36 unsigned int maxSize_;
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37
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38 public:
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39 explicit Factory(unsigned int maxSize) :
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40 maxSize_(maxSize)
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41 {
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42 }
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43
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43
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44 virtual ICache *Create() ORTHANC_OVERRIDE
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45 {
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46 return new MemoryCache(maxSize_);
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47 }
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48 };
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49
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50 private:
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51 class Payload;
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52
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53 typedef Orthanc::LeastRecentlyUsedIndex<std::string, Payload*> Index;
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54
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55 boost::mutex mutex_;
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56 unsigned int maxSize_;
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57 Index index_;
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58
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59 void RemoveOldest();
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60
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61 void InvalidateInternal(const std::string& key);
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62
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63 public:
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64 explicit MemoryCache(unsigned int maxSize);
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65
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66 ~MemoryCache();
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67
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68 virtual void Invalidate(const std::string& key) ORTHANC_OVERRIDE;
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69
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70 virtual void Store(const std::string& key,
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71 const std::string& value,
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72 unsigned int expiration /* in seconds */) ORTHANC_OVERRIDE;
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73
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74 virtual bool Retrieve(std::string& value,
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75 const std::string& key) ORTHANC_OVERRIDE;
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76 };
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77 }
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