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1
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1 |
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import logging |
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2
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1 |
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import os |
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3
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1 |
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import pickle |
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4
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5
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6
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1 |
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log = logging.getLogger(__name__) |
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7
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8
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9
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1 |
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class Cache(object): |
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10
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11
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1 |
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PATH = os.path.join('.cache', 'coveragespace') |
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12
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13
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1 |
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def __init__(self): |
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14
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1 |
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self._data = {} |
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15
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1 |
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self._load() |
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16
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17
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1 |
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def _load(self): |
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18
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1 |
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try: |
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19
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1 |
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with open(self.PATH, 'rb') as fin: |
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20
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1 |
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text = fin.read() |
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21
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1 |
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except IOError: |
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22
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1 |
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text = None |
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23
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24
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1 |
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try: |
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25
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1 |
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data = pickle.loads(text) |
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26
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1 |
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except (TypeError, KeyError, IndexError): |
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27
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1 |
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data = None |
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28
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29
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1 |
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if isinstance(data, dict): |
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30
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1 |
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self._data = data |
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31
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32
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1 |
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def _store(self): |
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33
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1 |
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directory = os.path.dirname(self.PATH) |
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34
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1 |
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if not os.path.exists(directory): |
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35
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1 |
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os.makedirs(directory) |
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36
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|
37
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1 |
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text = pickle.dumps(self._data) |
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38
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1 |
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with open(self.PATH, 'wb') as fout: |
|
39
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1 |
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fout.write(text) |
|
40
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|
41
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1 |
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def set(self, key, value): |
|
42
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1 |
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try: |
|
43
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1 |
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url, data = key |
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44
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1 |
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except ValueError: |
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45
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1 |
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log.debug("Setting cache for %s", key) |
|
46
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else: |
|
47
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1 |
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log.debug("Setting cache for %s: %s", url, data) |
|
48
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1 |
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key = self._slugify(*key) |
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49
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1 |
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self._data[key] = value |
|
50
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1 |
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log.debug("Cached value: %s", value) |
|
51
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1 |
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self._store() |
|
52
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|
53
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1 |
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def get(self, key, default=None): |
|
54
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1 |
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try: |
|
55
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1 |
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url, data = key |
|
56
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1 |
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except ValueError: |
|
57
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1 |
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log.debug("Getting cache for %s", key) |
|
58
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else: |
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59
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1 |
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log.debug("Getting cache for %s: %s", url, data) |
|
60
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1 |
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key = self._slugify(*key) |
|
61
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1 |
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value = self._data.get(key, default) |
|
62
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1 |
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log.debug("Cached value: %s", value) |
|
63
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1 |
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return value |
|
64
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|
65
|
1 |
|
@staticmethod |
|
66
|
|
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def _slugify(url, data): |
|
67
|
|
|
return (url, hash(frozenset(data.items()))) |
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68
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jacebrowning /
coverage-space-cli
