46 lines
1.3 KiB
Python
46 lines
1.3 KiB
Python
from luigi import Target
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from pymongo import MongoClient
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from datetime import datetime
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from contextlib import contextmanager
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from metrik.conf import get_config
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from metrik import __version__ as version
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class MongoTarget(Target):
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@contextmanager
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def get_db(self):
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config = get_config()
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client = MongoClient(
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host=config.get('metrik', 'mongo_host'),
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port=config.getint('metrik', 'mongo_port'))
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yield client[config.get('metrik', 'mongo_database')]
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client.close()
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def __init__(self, collection, id):
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self.collection = collection
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self.id = id
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def exists(self):
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with self.get_db() as db:
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return db[self.collection].find_one({
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'_id': self.id
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}) is not None
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def persist(self, dict_object, present=None):
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id_dict = dict_object
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id_dict['_id'] = self.id
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id_dict['_metrik_version'] = version
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id_dict['_created_at'] = (present if present is not None
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else datetime.now())
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with self.get_db() as db:
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return db[self.collection].insert_one(id_dict).inserted_id
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def retrieve(self):
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with self.get_db() as db:
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return db[self.collection].find_one({'_id': self.id})
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