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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: |
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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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16
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def _store(self): |
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17
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1 |
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directory = os.path.dirname(self.PATH) |
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18
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1 |
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if not os.path.exists(directory): |
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19
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1 |
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os.makedirs(directory) |
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20
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1 |
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21
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1 |
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text = pickle.dumps(self._data) |
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22
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1 |
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with open(self.PATH, 'wb') as fout: |
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23
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fout.write(text) |
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24
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1 |
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25
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1 |
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def _load(self): |
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26
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1 |
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try: |
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27
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1 |
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with open(self.PATH, 'rb') as fin: |
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28
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text = fin.read() |
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29
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1 |
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except IOError as e: |
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30
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1 |
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log.debug("Unable to read cache: %s", e) |
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31
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return |
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32
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1 |
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33
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1 |
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try: |
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34
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1 |
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data = pickle.loads(text) |
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35
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1 |
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except (TypeError, KeyError, IndexError) as e: |
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36
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log.debug("Unable to parse cache: %s", e) |
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37
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1 |
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38
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1 |
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if isinstance(data, dict): |
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39
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1 |
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self._data = data |
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40
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else: |
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41
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1 |
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log.debug("Invalid cache value: %s", data) |
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42
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1 |
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self._data = {} |
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43
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1 |
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44
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1 |
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def set(self, key, value): |
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45
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1 |
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slug = self._slugify(key) |
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46
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log.debug("Setting cache key: %s", slug) |
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47
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1 |
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self._data[slug] = value |
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48
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1 |
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log.debug("Cached value: %s", value) |
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49
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1 |
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self._store() |
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50
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1 |
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51
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1 |
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def get(self, key, default=None): |
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52
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self._load() |
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53
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1 |
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slug = self._slugify(key) |
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54
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1 |
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log.debug("Getting cache key: %s", slug) |
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55
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1 |
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value = self._data.get(slug, default) |
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56
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1 |
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log.debug("Cached value: %s", value) |
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57
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1 |
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return value |
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58
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59
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1 |
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def clear(self): |
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60
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1 |
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self._data = {} |
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61
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1 |
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self._store() |
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62
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1 |
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|
63
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1 |
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@staticmethod |
|
64
|
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def _slugify(key): |
|
65
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1 |
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try: |
|
66
|
|
|
url, data = key |
|
67
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1 |
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except ValueError: |
|
68
|
|
|
return key |
|
69
|
|
|
else: |
|
70
|
|
|
return url, tuple(data.items()) |
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71
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jacebrowning /
coverage-space-cli
