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1 | 1 | # -*- coding: utf-8 -*- |
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2 | 2 | |
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3 | 3 | # Copyright (C) 2010-2018 RhodeCode GmbH |
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4 | 4 | # |
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5 | 5 | # This program is free software: you can redistribute it and/or modify |
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6 | 6 | # it under the terms of the GNU Affero General Public License, version 3 |
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7 | 7 | # (only), as published by the Free Software Foundation. |
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8 | 8 | # |
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9 | 9 | # This program is distributed in the hope that it will be useful, |
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10 | 10 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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11 | 11 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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12 | 12 | # GNU General Public License for more details. |
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13 | 13 | # |
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14 | 14 | # You should have received a copy of the GNU Affero General Public License |
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15 | 15 | # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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16 | 16 | # |
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17 | 17 | # This program is dual-licensed. If you wish to learn more about the |
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18 | 18 | # RhodeCode Enterprise Edition, including its added features, Support services, |
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19 | 19 | # and proprietary license terms, please see https://rhodecode.com/licenses/ |
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20 | 20 | |
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21 | 21 | """ |
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22 | 22 | Custom LRU memory manager for debugging purposes. It allows to track the keys |
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23 | 23 | and the state of LRU dict. |
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24 | 24 | |
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25 | 25 | inrae.cache is licensed under LRUDict is licensed under ZPL license |
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26 | 26 | This software is Copyright (c) Zope Corporation (tm) and |
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27 | 27 | Contributors. All rights reserved. |
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28 | 28 | |
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29 | 29 | TODO: marcink, we might think of replacing the LRUDict with lru-dict library |
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30 | 30 | written in C. |
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31 | 31 | |
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32 | 32 | eg difference in speed: |
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33 | 33 | |
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34 | 34 | LRUDictC Time : 0.00025 s, Memory : 110592 Kb |
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35 | 35 | LRUDict Time : 0.00369 s, Memory : 147456 Kb |
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36 | 36 | """ |
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37 | 37 | import logging |
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38 | 38 | |
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39 | from infrae.cache.beakerext.lru import LRUDict | |
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39 | from repoze.lru import LRUCache | |
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40 | 40 | from beaker.container import MemoryNamespaceManager, AbstractDictionaryNSManager |
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41 | 41 | from rhodecode.lib.utils2 import safe_str |
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42 | 42 | |
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43 | 43 | log = logging.getLogger(__name__) |
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44 | 44 | |
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45 | 45 | |
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46 | class LRUDict(LRUCache): | |
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47 | """ Wrapper to provide partial dict access | |
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48 | """ | |
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49 | def __setitem__(self, key, value): | |
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50 | return self.put(key, value) | |
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51 | ||
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52 | def __getitem__(self, key): | |
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53 | return self.get(key) | |
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54 | ||
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55 | def __contains__(self, key): | |
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56 | return bool(self.get(key)) | |
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57 | ||
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58 | def __delitem__(self, key): | |
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59 | del self.data[key] | |
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60 | ||
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61 | def keys(self): | |
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62 | return self.data.keys() | |
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63 | ||
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64 | ||
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46 | 65 | class LRUDictDebug(LRUDict): |
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47 | 66 | """ |
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48 | 67 | Wrapper to provide some debug options |
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49 | 68 | """ |
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50 | 69 | def _report_keys(self): |
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51 | 70 | elems_cnt = '%s/%s' % (len(self.keys()), self.size) |
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52 | 71 | # trick for pformat print it more nicely |
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53 | 72 | fmt = '\n' |
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54 | 73 | for cnt, elem in enumerate(self.keys()): |
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55 | 74 | fmt += '%s - %s\n' % (cnt+1, safe_str(elem)) |
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56 | 75 | log.debug('current LRU keys (%s):%s' % (elems_cnt, fmt)) |
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57 | 76 | |
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58 | 77 | def __getitem__(self, key): |
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59 | 78 | self._report_keys() |
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60 | 79 | return self.get(key) |
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61 | 80 | |
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62 | 81 | |
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63 | 82 | class MemoryLRUNamespaceManagerBase(MemoryNamespaceManager): |
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64 | 83 | default_max_items = 10000 |
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65 | 84 | |
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66 | 85 | def _get_factory(self, max_items): |
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67 | 86 | |
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68 | 87 | def Factory(): |
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69 | 88 | return LRUDict(int(max_items)) |
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70 | 89 | return Factory |
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71 | 90 | |
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72 | 91 | def __init__(self, namespace, **kwargs): |
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73 | 92 | AbstractDictionaryNSManager.__init__(self, namespace) |
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74 | 93 | if 'max_items' in kwargs: |
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75 | 94 | max_items = kwargs['max_items'] |
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76 | 95 | else: |
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77 | 96 | max_items = self.default_max_items |
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78 | 97 | |
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79 | 98 | Factory = self._get_factory(max_items) |
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80 | 99 | |
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81 | 100 | self.dictionary = MemoryNamespaceManager.namespaces.get( |
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82 | 101 | self.namespace, Factory) |
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83 | 102 | |
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84 | 103 | |
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85 | 104 | class MemoryLRUNamespaceManagerDebug(MemoryLRUNamespaceManagerBase): |
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86 | 105 | """ |
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87 | 106 | A memory namespace manager that return with LRU dicts backend, |
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88 | 107 | special debug for testing |
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89 | 108 | """ |
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90 | 109 | default_max_items = 10000 |
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91 | 110 | |
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92 | 111 | def _get_factory(self, max_items): |
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93 | 112 | |
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94 | 113 | def Factory(): |
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95 | 114 | return LRUDictDebug(int(max_items)) |
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96 | 115 | return Factory |
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