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# -*- coding: utf-8 -*- |
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""" |
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flask_jsondash.db_adapters |
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~~~~~~~~~~~~~~~~~~~~~~~~~~ |
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A translation adapter for making queries between storage types. |
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Types are either: |
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1. PostgreSQL json fields |
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2. MongoDB collections. |
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""" |
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import json |
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from datetime import datetime as dt |
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from pymongo import MongoClient |
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from . import settings |
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DB_NAME = settings.ACTIVE_DB |
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if DB_NAME == 'mongo': |
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client = MongoClient(host=settings.DB_URI, port=settings.DB_PORT) |
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conn = client[settings.DB_NAME] |
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coll = conn[settings.DB_TABLE] |
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else: |
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raise NotImplementedError( |
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'Mongodb is the only supported database right now.') |
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def reformat_data(data, c_id): |
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"""Format/clean existing config data to be re-inserted into database.""" |
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data.update(dict(id=c_id, date=dt.now())) |
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return data |
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def format_charts(data): |
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"""Form chart POST data for JSON usage within db.""" |
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modules = [] |
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for item in data: |
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if item.startswith('module_'): |
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val_json = json.loads(data[item]) |
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modules.append(val_json) |
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return modules |
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def count(**kwargs): |
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"""Standard db count.""" |
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if DB_NAME == 'mongo': |
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return coll.count(**kwargs) |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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def read(**kwargs): |
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"""Read a record.""" |
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if DB_NAME == 'mongo': |
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if kwargs.get('c_id') is None: |
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return coll.find(**kwargs) |
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else: |
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return coll.find_one(dict(id=kwargs.pop('c_id'))) |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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def update(c_id, data=None, fmt_charts=True): |
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"""Update a record.""" |
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if data is None: |
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return |
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if DB_NAME == 'mongo': |
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charts = format_charts(data) if fmt_charts else data.get('modules') |
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save_conf = { |
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'$set': { |
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'name': data.get('name', 'NONAME'), |
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'modules': charts, |
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'date': dt.now() |
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} |
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} |
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save_conf['$set'].update(**data) |
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coll.update(dict(id=c_id), save_conf) |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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def create(data=None): |
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"""Add a new record.""" |
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if data is None: |
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return |
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if DB_NAME == 'mongo': |
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coll.insert(data) |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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def delete(c_id): |
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"""Delete a record.""" |
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if DB_NAME == 'mongo': |
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coll.delete_one(dict(id=c_id)) |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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def delete_all(): |
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"""Delete ALL records. Separated function for safety. |
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This should never be used for production. |
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""" |
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if DB_NAME == 'mongo': |
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coll.remove() |
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else: |
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raise NotImplemented('{} is not supported.'.format(DB_NAME)) |
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christabor /
flask_jsondash
