Just about ready to actually purge file items
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commit
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@ -2,6 +2,7 @@
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import datetime
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import os
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import sys
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import yaml
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@ -76,6 +77,79 @@ class BackupRotator:
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def rotate_path(self, path):
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self.log("Rotating path", path)
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if "maximum-items" not in self.__config:
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raise Exception("Please provide config key: \"maximum-items\"")
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max_items = self.__config["maximum-items"]
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if not os.path.isdir(path):
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raise Exception("Path should be a directory:" + str(path))
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children = self.gather_rotation_candidates(path)
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# Do we need to rotate anything out?
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if len(children) <= max_items:
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self.log(
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"Path only has " + str(len(children)) + " items,"
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+ " but needs " + str(max_items) + " for rotation"
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+ "; Won't rotate this path."
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)
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return
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#
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purge_count = len(children) - max_items
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self.log(
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"Need to purge " + str(purge_count) + " items"
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)
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for purge_index in range(purge_count):
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item_to_purge = self.pick_item_to_purge(children)
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self.log("Purging item:", item_to_purge)
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children.remove(item_to_purge)
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def gather_rotation_candidates(self, path):
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candidates = []
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if "target-type" not in self.__config.keys():
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raise Exception("Please provide the configuration key: target-type")
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for item_name in os.listdir(path):
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item_path = os.path.join(path, item_name)
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if self.__config["target-type"] == "file":
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if not os.path.isfile(item_path):
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continue
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elif self.__config["target-type"] == "directory":
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if not os.path.isdir(item_path):
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continue
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else:
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raise Exception("Configuration key \"target-type\" must be \"file\" or \"directory\"")
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candidates.append(item_path)
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return candidates
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def pick_item_to_purge(self, items):
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if "date-detection" not in self.__config.keys():
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raise Exception("Please provide config key: \"date-detection\"")
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detection = self.__config["date-detection"]
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best_item = None
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best_mtime = None
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for item in items:
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if detection == "file":
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mtime = os.path.getmtime(item)
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if best_mtime is None or mtime < best_mtime:
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best_mtime = mtime
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best_item = item
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else:
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raise Exception("Invalid value for \"date-detection\": " + str(detection))
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return best_item
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def main():
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