bugfix: reformatting factory singleton and adding python queue as qlistener
This commit is contained in:
Steve Nyemba
parent
f4c0ca80aa
commit
3b5c9d1503
|
|
@ -38,6 +38,7 @@ if sys.version_info[0] > 2 :
|
|||
from transport import sql as sql
|
||||
from transport import etl as etl
|
||||
from transport.version import __version__
|
||||
from transport import providers
|
||||
else:
|
||||
from common import Reader, Writer,Console #, factory
|
||||
import disk
|
||||
|
|
@ -48,37 +49,39 @@ else:
|
|||
import sql
|
||||
import etl
|
||||
from version import __version__
|
||||
import providers
|
||||
import psycopg2 as pg
|
||||
import mysql.connector as my
|
||||
from google.cloud import bigquery as bq
|
||||
import nzpy as nz #--- netezza drivers
|
||||
import os
|
||||
|
||||
class providers :
|
||||
POSTGRESQL = 'postgresql'
|
||||
MONGODB = 'mongodb'
|
||||
# class providers :
|
||||
# POSTGRESQL = 'postgresql'
|
||||
# MONGODB = 'mongodb'
|
||||
|
||||
BIGQUERY ='bigquery'
|
||||
FILE = 'file'
|
||||
ETL = 'etl'
|
||||
SQLITE = 'sqlite'
|
||||
SQLITE3= 'sqlite'
|
||||
REDSHIFT = 'redshift'
|
||||
NETEZZA = 'netezza'
|
||||
MYSQL = 'mysql'
|
||||
RABBITMQ = 'rabbitmq'
|
||||
MARIADB = 'mariadb'
|
||||
COUCHDB = 'couch'
|
||||
CONSOLE = 'console'
|
||||
ETL = 'etl'
|
||||
#
|
||||
# synonyms of the above
|
||||
BQ = BIGQUERY
|
||||
MONGO = MONGODB
|
||||
FERRETDB= MONGODB
|
||||
PG = POSTGRESQL
|
||||
PSQL = POSTGRESQL
|
||||
PGSQL = POSTGRESQL
|
||||
# BIGQUERY ='bigquery'
|
||||
# FILE = 'file'
|
||||
# ETL = 'etl'
|
||||
# SQLITE = 'sqlite'
|
||||
# SQLITE3= 'sqlite'
|
||||
# REDSHIFT = 'redshift'
|
||||
# NETEZZA = 'netezza'
|
||||
# MYSQL = 'mysql'
|
||||
# RABBITMQ = 'rabbitmq'
|
||||
# MARIADB = 'mariadb'
|
||||
# COUCHDB = 'couch'
|
||||
# CONSOLE = 'console'
|
||||
# ETL = 'etl'
|
||||
# #
|
||||
# # synonyms of the above
|
||||
# BQ = BIGQUERY
|
||||
# MONGO = MONGODB
|
||||
# FERRETDB= MONGODB
|
||||
# PG = POSTGRESQL
|
||||
# PSQL = POSTGRESQL
|
||||
# PGSQL = POSTGRESQL
|
||||
# import providers
|
||||
|
||||
class IEncoder (json.JSONEncoder):
|
||||
def default (self,object):
|
||||
|
|
@ -156,6 +159,103 @@ class factory :
|
|||
import time
|
||||
def instance(**_args):
|
||||
"""
|
||||
creating an instance given the provider, we should have an idea of :class, :driver
|
||||
:provider
|
||||
:read|write = {connection to the database}
|
||||
"""
|
||||
_provider = _args['provider']
|
||||
_group = None
|
||||
|
||||
for _id in providers.CATEGORIES :
|
||||
if _provider in providers.CATEGORIES[_id] :
|
||||
_group = _id
|
||||
break
|
||||
if _group :
|
||||
_classPointer = _getClassInstance(_group,**_args)
|
||||
#
|
||||
# Let us reformat the arguments
|
||||
if 'read' in _args or 'write' in _args :
|
||||
_args = _args['read'] if 'read' in _args else _args['write']
|
||||
_args['provider'] = _provider
|
||||
if _group == 'sql' :
|
||||
_info = _get_alchemyEngine(**_args)
|
||||
|
||||
_args = dict(_args,**_info)
|
||||
_args['driver'] = providers.DRIVERS[_provider]
|
||||
|
||||
else:
|
||||
if _provider in providers.DEFAULT :
|
||||
_default = providers.DEFAULT[_provider]
|
||||
_defkeys = list(set(_default.keys()) - set(_args.keys()))
|
||||
if _defkeys :
|
||||
for key in _defkeys :
|
||||
_args[key] = _default[key]
|
||||
pass
|
||||
#
|
||||
# get default values from
|
||||
|
||||
return _classPointer(**_args)
|
||||
#
|
||||
# Let us determine the category of the provider that has been given
|
||||
def _get_alchemyEngine(**_args):
|
||||
"""
|
||||
This function returns the SQLAlchemy engine associated with parameters, This is only applicable for SQL _items
|
||||
:_args arguments passed to the factory {provider and other}
|
||||
"""
|
||||
#@TODO: Enable authentication files (private_key)
|
||||
_username = _args['username'] if 'username' in _args else ''
|
||||
_password = _args['password'] if 'password' in _args else ''
|
||||
_account = _args['account'] if 'account' in _args else ''
|
||||
_database = _args['database']
|
||||
_provider = _args['provider']
|
||||
if _username != '':
|
||||
_account = _username + ':'+_password+'@'
|
||||
_host = _args['host'] if 'host' in _args else ''
|
||||
_port = _args['port'] if 'port' in _args else ''
|
||||
if _provider in providers.DEFAULT :
|
||||
_default = providers.DEFAULT[_provider]
|
||||
_host = _host if _host != '' else (_default['host'] if 'host' in _default else '')
|
||||
_port = _port if _port != '' else (_default['port'] if 'port' in _default else '')
|
||||
if _port == '':
|
||||
_port = providers.DEFAULT['port'] if 'port' in providers.DEFAULT else ''
|
||||
#
|
||||
|
||||
if _host != '' and _port != '' :
|
||||
_fhost = _host+":"+str(_port) #--formatted hostname
|
||||
else:
|
||||
_fhost = _host
|
||||
# Let us update the parameters we have thus far
|
||||
#
|
||||
|
||||
|
||||
uri = ''.join([_provider,"://",_account,_fhost,'/',_database])
|
||||
|
||||
_engine = sqlalchemy.create_engine (uri,future=True)
|
||||
_out = {'sqlalchemy':_engine}
|
||||
_pargs = {'host':_host,'port':_port,'username':_username,'password':_password}
|
||||
for key in _pargs :
|
||||
if _pargs[key] != '' :
|
||||
_out[key] = _pargs[key]
|
||||
return _out
|
||||
def _getClassInstance(_group,**_args):
|
||||
"""
|
||||
This function returns the class instance we are attempting to instanciate
|
||||
:_group items in providers.CATEGORIES.keys()
|
||||
:_args arguments passed to the factory class
|
||||
"""
|
||||
if 'read' in _args or 'write' in _args :
|
||||
_context = 'read' if 'read' in _args else _args['write']
|
||||
_info = _args[_context]
|
||||
else:
|
||||
_context = _args['context'] if 'context' in _args else 'read'
|
||||
_class = providers.READ[_group] if _context == 'read' else providers.WRITE[_group]
|
||||
if type(_class) == dict and _args['provider'] in _class:
|
||||
_class = _class[_args['provider']]
|
||||
|
||||
return _class
|
||||
|
||||
def __instance(**_args):
|
||||
"""
|
||||
|
||||
@param provider {file,sqlite,postgresql,redshift,bigquery,netezza,mongo,couch ...}
|
||||
@param context read|write|rw
|
||||
|
|
|
|||
|
|
@ -127,6 +127,8 @@ class MongoReader(Mongo,Reader):
|
|||
|
||||
return pd.DataFrame(r)
|
||||
else:
|
||||
|
||||
|
||||
if 'table' in args or 'collection' in args :
|
||||
if 'table' in args:
|
||||
_uid = args['table']
|
||||
|
|
@ -134,7 +136,8 @@ class MongoReader(Mongo,Reader):
|
|||
_uid = args['collection']
|
||||
else:
|
||||
_uid = self.uid
|
||||
|
||||
else:
|
||||
_uid = self.uid
|
||||
collection = self.db[_uid]
|
||||
_filter = args['filter'] if 'filter' in args else {}
|
||||
_df = pd.DataFrame(collection.find(_filter))
|
||||
|
|
|
|||
|
|
@ -0,0 +1,63 @@
|
|||
from transport.common import Reader, Writer,Console #, factory
|
||||
from transport import disk
|
||||
import sqlite3
|
||||
from transport import s3 as s3
|
||||
from transport import rabbitmq as queue
|
||||
from transport import couch as couch
|
||||
from transport import mongo as mongo
|
||||
from transport import sql as sql
|
||||
from transport import etl as etl
|
||||
from transport import qlistener
|
||||
import psycopg2 as pg
|
||||
import mysql.connector as my
|
||||
from google.cloud import bigquery as bq
|
||||
import nzpy as nz #--- netezza drivers
|
||||
import os
|
||||
|
||||
from transport.version import __version__
|
||||
|
||||
POSTGRESQL = 'postgresql'
|
||||
MONGODB = 'mongodb'
|
||||
HTTP='http'
|
||||
BIGQUERY ='bigquery'
|
||||
FILE = 'file'
|
||||
ETL = 'etl'
|
||||
SQLITE = 'sqlite'
|
||||
SQLITE3= 'sqlite'
|
||||
REDSHIFT = 'redshift'
|
||||
NETEZZA = 'netezza'
|
||||
MYSQL = 'mysql'
|
||||
RABBITMQ = 'rabbitmq'
|
||||
MARIADB = 'mariadb'
|
||||
COUCHDB = 'couch'
|
||||
CONSOLE = 'console'
|
||||
ETL = 'etl'
|
||||
#
|
||||
# synonyms of the above
|
||||
BQ = BIGQUERY
|
||||
MONGO = MONGODB
|
||||
FERRETDB= MONGODB
|
||||
PG = POSTGRESQL
|
||||
PSQL = POSTGRESQL
|
||||
PGSQL = POSTGRESQL
|
||||
S3 = 's3'
|
||||
AWS_S3 = 's3'
|
||||
RABBIT = RABBITMQ
|
||||
|
||||
QLISTENER = 'qlistener'
|
||||
|
||||
DRIVERS = {PG:pg,REDSHIFT:pg,MYSQL:my,MARIADB:my,NETEZZA:nz,SQLITE:sqlite3}
|
||||
CATEGORIES ={'sql':[NETEZZA,PG,MYSQL,REDSHIFT,SQLITE,MARIADB],'nosql':[MONGODB,COUCHDB],'cloud':[BIGQUERY],'file':[FILE],
|
||||
'queue':[RABBIT,QLISTENER],'memory':[CONSOLE,QLISTENER],'http':[HTTP]}
|
||||
|
||||
READ = {'sql':sql.SQLReader,'nosql':{MONGODB:mongo.MongoReader,COUCHDB:couch.CouchReader},'cloud':sql.BigQueryReader,
|
||||
'file':disk.DiskReader,'queue':{RABBIT:queue.QueueReader,QLISTENER:qlistener.qListener}
|
||||
}
|
||||
WRITE = {'sql':sql.SQLWriter,'nosql':{MONGODB:mongo.MongoWriter,COUCHDB:couch.CouchWriter},'cloud':sql.BigQueryWriter,
|
||||
'file':disk.DiskWriter,'queue':{RABBIT:queue.QueueWriter,QLISTENER:qlistener.qListener}
|
||||
}
|
||||
DEFAULT = {PG:{'host':'localhost','port':5432},MYSQL:{'host':'localhost','port':3306}}
|
||||
DEFAULT[MONGODB] = {'port':27017,'host':'localhost'}
|
||||
DEFAULT[REDSHIFT] = DEFAULT[PG]
|
||||
DEFAULT[MARIADB] = DEFAULT[MYSQL]
|
||||
DEFAULT[NETEZZA] = {'port':5480}
|
||||
|
|
@ -0,0 +1,42 @@
|
|||
import queue
|
||||
from threading import Thread, Lock
|
||||
from transport.common import Reader,Writer
|
||||
import numpy as np
|
||||
import pandas as pd
|
||||
|
||||
class qListener :
|
||||
lock = Lock()
|
||||
_queue = {'default':queue.Queue()}
|
||||
def __init__(self,**_args):
|
||||
self._cache = {}
|
||||
self._callback = _args['callback'] if 'callback' in _args else None
|
||||
self._id = _args['id'] if 'id' in _args else 'default'
|
||||
if self._id not in qListener._queue :
|
||||
qListener._queue[self._id] = queue.Queue()
|
||||
thread = Thread(target=self._forward)
|
||||
thread.start()
|
||||
def _forward(self):
|
||||
_q = qListener._queue[self._id]
|
||||
_data = _q.get()
|
||||
_q.task_done()
|
||||
self._callback(_data)
|
||||
|
||||
def has(self,**_args) :
|
||||
return self._callback is not None
|
||||
|
||||
|
||||
def close(self):
|
||||
"""
|
||||
This will empty the queue and have it ready for another operation
|
||||
"""
|
||||
_q = qListener._queue[self._id]
|
||||
with _q.mutex:
|
||||
_q.queue.clear()
|
||||
_q.all_tasks_done.notify_all()
|
||||
|
||||
def write(self,_data,**_args):
|
||||
_id = _args['id'] if 'id' in _args else self._id
|
||||
|
||||
_q = qListener._queue[_id]
|
||||
_q.put(_data)
|
||||
_q.join()
|
||||
|
|
@ -29,6 +29,7 @@ from multiprocessing import Lock, RLock
|
|||
import pandas as pd
|
||||
import numpy as np
|
||||
import nzpy as nz #--- netezza drivers
|
||||
import sqlite3
|
||||
import copy
|
||||
import os
|
||||
|
||||
|
|
@ -58,8 +59,8 @@ class SQLRW :
|
|||
# _info['host'] = 'localhost' if 'host' not in _args else _args['host']
|
||||
# _info['port'] = SQLWriter.REFERENCE[_provider]['port'] if 'port' not in _args else _args['port']
|
||||
|
||||
_info['host'] = _args['host']
|
||||
_info['port'] = _args['port']
|
||||
_info['host'] = _args['host'] if 'host' in _args else ''
|
||||
_info['port'] = _args['port'] if 'port' in _args else ''
|
||||
|
||||
# if 'host' in _args :
|
||||
# _info['host'] = 'localhost' if 'host' not in _args else _args['host']
|
||||
|
|
@ -98,8 +99,12 @@ class SQLRW :
|
|||
if _handler == my :
|
||||
_info['database'] = _info['dbname']
|
||||
del _info['dbname']
|
||||
|
||||
if _handler == sqlite3 :
|
||||
_info = {'path':_info['dbname'],'isolation_level':'IMMEDIATE'}
|
||||
if _handler != sqlite3 :
|
||||
self.conn = _handler.connect(**_info)
|
||||
else:
|
||||
self.conn = _handler.connect(_info['path'],isolation_level='IMMEDIATE')
|
||||
self._engine = _args['sqlalchemy'] if 'sqlalchemy' in _args else None
|
||||
def meta(self,**_args):
|
||||
schema = []
|
||||
|
|
|
|||
Loading…
Reference in New Issue