1 | "use strict";
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2 |
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3 | const Store = require('express-session/session/store');
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4 | const defer = require('../helper/defer');
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5 |
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6 |
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7 |
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8 |
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9 |
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10 | class CollectionSessionStore extends Store
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11 | {
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12 |
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13 | |
14 |
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15 |
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16 |
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17 | constructor(collection, options = {})
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18 | {
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19 | super();
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20 |
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21 | |
22 |
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23 |
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24 | this.collection = collection;
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25 |
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26 | |
27 |
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28 |
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29 | this.sessionsTTL = options.sessionsTTL || 8 * 60 * 60 * 1000;
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30 | }
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31 |
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32 | |
33 |
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34 |
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35 |
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36 | cleanup()
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37 | {
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38 | const collection = this.collection;
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39 | const sessions = collection.lookup;
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40 |
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41 | for (let sessionId in sessions)
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42 | {
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43 | let session = sessions[sessionId];
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44 |
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45 | if (session)
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46 | {
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47 | if (session.expires < Date.now())
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48 | {
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49 | collection.deleteRecord(session);
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50 | }
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51 | }
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52 | }
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53 | }
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54 |
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55 | |
56 |
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57 |
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58 | get(sessionId, callback)
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59 | {
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60 | this.cleanup();
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61 | defer(callback, null, this.collection.lookup[sessionId]);
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62 | }
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63 |
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64 | |
65 |
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66 |
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67 | set(sessionId, session, callback)
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68 | {
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69 | this.cleanup();
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70 | session = JSON.parse(JSON.stringify(session));
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71 | session.id = sessionId;
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72 |
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73 |
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74 | const THRESHOLD = this.sessionsTTL / 10;
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75 |
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76 | session.expires = Math.ceil((Date.now() + this.sessionsTTL) / THRESHOLD) * THRESHOLD;
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77 |
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78 | if (this.collection.lookup[sessionId] && JSON.stringify(this.collection.lookup[sessionId]) !== JSON.stringify(session))
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79 | {
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80 | this.collection.updateRecord(session);
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81 | }
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82 | else if (!this.collection.lookup[sessionId])
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83 | {
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84 | this.collection.createRecord(session);
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85 | }
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86 | defer(callback);
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87 | }
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88 |
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89 | |
90 |
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91 |
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92 | destroy(sessionId, callback)
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93 | {
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94 | let session = this.collection.lookup[sessionId];
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95 |
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96 | if (session)
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97 | {
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98 | this.collection.deleteRecord(session);
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99 | }
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100 | defer(callback);
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101 | }
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102 | }
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103 |
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104 | module.exports = CollectionSessionStore;
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