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67 lines
2.2 KiB
Python
67 lines
2.2 KiB
Python
5 years ago
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from pymongo import MongoClient
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# from transport import Reader,Writer
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from common import Reader, Writer
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import json
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class Mongo :
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"""
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Basic mongodb functions are captured here
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"""
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def __init__(self,**args):
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"""
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:dbname database name/identifier
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:host host and port of the database
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:username username for authentication
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:password password for current user
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"""
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host = args['host']
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if 'user' in args and 'password' in args:
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self.client = MongoClient(host,
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username=args['username'] ,
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password=args['password'] ,
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authMechanism='SCRAM-SHA-256')
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else:
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self.client = MongoClient()
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self.uid = args['uid'] #-- document identifier
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self.dbname = args['dbname']
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self.db = self.client[self.dbname]
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def isready(self):
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p = self.dbname in self.client.list_database_names()
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q = self.uid in self.client[self.dbname].list_collection_names()
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return p and q
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class MongoReader(Mongo,Reader):
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"""
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This class will read from a mongodb data store and return the content of a document (not a collection)
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"""
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def __init__(self,**args):
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Mongo.__init__(self,**args)
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def read(self,size=-1):
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collection = self.db[self.uid]
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return collection.find({})
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def view(self,**args):
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"""
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This function is designed to execute a view (map/reduce) operation
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"""
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pass
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class MongoWriter(Mongo,Writer):
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"""
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This class is designed to write to a mongodb collection within a database
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"""
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def __init__(self,**args):
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Mongo.__init__(self,**args)
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def write(self,**args):
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# document = self.db[self.uid].find()
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collection = self.db[self.uid]
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collection.update_one()
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self.db[self.uid].insert_one(args['row'])
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def set(self,document):
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collection = self.db[self.uid]
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if collection.count_document() > 0 :
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collection.delete({_id:self.uid})
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collecton.update_one({"_id":self.uid},document,True)
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