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89 lines
2.9 KiB
Python
89 lines
2.9 KiB
Python
"""
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Data Transport, The Phi Technology LLC
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Steve L. Nyemba, steve@the-phi.com
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This library is designed to serve as a wrapper to a set of supported data stores :
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- couchdb
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- mongodb
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- Files (character delimited)
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- Queues (RabbmitMq)
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- Session (Flask)
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- s3
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- sqlite
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The supported operations are read/write and providing meta data to the calling code
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We separated reads from writes to mitigate accidents associated with writes.
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Source Code is available under MIT License:
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https://healthcareio.the-phi.com/data-transport
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https://hiplab.mc.vanderbilt.edu/git/hiplab/data-transport
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"""
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import numpy as np
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from transport import sql, nosql, cloud, other
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import pandas as pd
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import json
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import os
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from info import __version__,__author__
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PROVIDERS = {}
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def init():
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global PROVIDERS
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for _module in [cloud,sql,nosql,other] :
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for _provider_name in dir(_module) :
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if _provider_name.startswith('__') :
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continue
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PROVIDERS[_provider_name] = {'module':getattr(_module,_provider_name),'type':_module.__name__}
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# print ([ {name:getattr(sql,name)} for name in dir(sql) if not name.startswith('__')])
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def instance (**_args):
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"""
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type:
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read: true|false (default true)
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auth_file
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"""
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global PROVIDERS
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if 'auth_file' in _args:
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if os.path.exists(_args['auth_file']) :
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f = open(_args['auth_file'])
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_args = dict (_args,** json.loads(f.read()) )
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f.close()
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else:
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filename = _args['auth_file']
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raise Exception(f" {filename} was not found or is invalid")
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if _args['provider'] in PROVIDERS :
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_info = PROVIDERS[_args['provider']]
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_module = _info['module']
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if 'context' in _args :
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_context = _args['context']
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else:
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_context = 'read'
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_pointer = getattr(_module,'Reader') if _context == 'read' else getattr(_module,'Writer')
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return _pointer (**_args)
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pass
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else:
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raise Exception ("Missing or Unknown provider")
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pass
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def supported ():
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_info = {}
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for _provider in PROVIDERS :
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_item = PROVIDERS[_provider]
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if _item['type'] not in _info :
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_info[_item['type']] = []
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_info[_item['type']].append(_provider)
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_df = pd.DataFrame()
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for _id in _info :
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if not _df.shape[0] :
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_df = pd.DataFrame(_info[_id],columns=[_id.replace('transport.','')])
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else:
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_df = pd.DataFrame(_info[_id],columns=[_id.replace('transport.','')]).join(_df, how='outer')
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return _df.fillna('')
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class factory :
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pass
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factory.instance = instance
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init()
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# if __name__ == '__main__' :
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# # if not PROVIDERS :
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# init()
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# print (list(PROVIDERS.keys()))
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# pgr = instance(provider='postgresql',database='io',table='foo',write=True)
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# print (pgr.read())
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# print ()
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# print (supported()) |