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