adding templates to the class hierarchies, helps with wizard

bin/transport

@@ -104,7 +104,7 @@ def generate (path:Annotated[str,typer.Argument(help="path of the ETL configurat
             {
                 "source":{"provider":"http","url":"https://raw.githubusercontent.com/codeforamerica/ohana-api/master/data/sample-csv/addresses.csv"},
                 "target":
-            [{"provider":"files","path":"addresses.csv","delimiter":","},{"provider":"sqlite","database":"sample.db3","table":"addresses"}]
+            [{"provider":"files","path":"addresses.csv","delimiter":","},{"provider":"sqlite3","database":"sample.db3","table":"addresses"}]
             }
             ]
     file = open(path,'w')

info/__init__.py

@@ -1,6 +1,6 @@
 __app_name__  = 'data-transport'
 __author__ = 'The Phi Technology'
-__version__= '2.4.3'
+__version__= '2.4.4'
 __email__  = "info@the-phi.com"
 __license__=f"""
 Copyright 2010 - 2024, Steve L. Nyemba

transport/cloud/bigquery.py

@@ -15,7 +15,7 @@ import time
 
 MAX_CHUNK = 2000000
 class BigQuery:
-    __template__= {"private_key":None,"dataset":None,"table":None,}
+    __template__= {"private_key":None,"dataset":None,"table":None}
     def __init__(self,**_args):
         path = _args['service_key'] if 'service_key' in _args else _args['private_key']
         self.credentials = service_account.Credentials.from_service_account_file(path)

transport/iowrapper.py

@@ -16,7 +16,8 @@ from datetime import datetime
 import pandas as pd
 import os
 import sys
-
+import itertools
+import json
 
 class IO:
     """
@@ -29,9 +30,9 @@ class IO:
         #
         # registry.init()
         
-        self._logger = _logger #transport.get.writer(label='logger') #if registry.has('logger') else None
+        self._logger = _logger if not type(_agent) in [IReader,IWriter] else _agent._logger #transport.get.writer(label='logger') #if registry.has('logger') else None
-        if not _logger and hasattr(_agent,'_logger') :
+        # if not _logger and hasattr(_agent,'_logger') :
-            self._logger = getattr(_agent,'_logger')
+        #     self._logger = getattr(_agent,'_logger')
         self._agent = _agent
         _date = _date = str(datetime.now())
         self._logTable = 'logs' #'_'.join(['logs',_date[:10]+_date[11:19]]).replace(':','').replace('-','_')
@@ -47,8 +48,11 @@ class IO:
             _date = str(datetime.now())                                    
             _data = dict({'pid':os.getpid(),'date':_date[:10],'time':_date[11:19]},**_args)
             for key in _data :
-                _data[key] = str(_data[key])
+                _data[key] = str(_data[key]) if type(_data[key]) not in [list,dict] else json.dumps(_data[key])
             self._logger.write(pd.DataFrame([_data])) #,table=self._logTable)
+        else:
+            print ([' ********** '])
+            print (_args)
     def _init_plugins(self,_items):
         """
         This function will load pipelined functions as a plugin loader
@@ -117,12 +121,19 @@ class IReader(IO):
             if self._plugins :
                 return self._stream(_data) 
             else:
-                self.log(action='streaming',object=_objectName, input= {'memory_size':sys.getsizeof(_data)})
+                _count = 0
-                return _data
+                for _segment in _data :
+                    _count += 1
+                    yield _segment
+                self.log(action='streaming',object=_objectName, input= {'segments':_count})
+                # return _data
         else:
+            
+            
             self.log(action='read',object=_objectName, input=_data.shape)
             if self._plugins :
-                _data = self._plugins.apply(_data)
+                _logs = []
+                _data = self._plugins.apply(_data,self.log)
             return _data
             
         # if self._plugins and self._plugins.ratio() > 0 :
@@ -144,7 +155,10 @@ class IWriter(IO):
         if 'plugins' in _args :
             self._init_plugins(_args['plugins'])
         if self._plugins and self._plugins.ratio() > 0 :
-            _data = self._plugins.apply(_data,self._logger)
+            _logs = []
+            _data = self._plugins.apply(_data,_logs,self.log)
+            
+            # [self.log(**_item) for _item in _logs]
         try:
             # IWriter.lock.acquire()
             self._agent.write(_data,**_args)
@@ -161,7 +175,13 @@ class IETL(IReader) :
     This class performs an ETL operation by ineriting a read and adding writes as pipeline functions
     """
     def __init__(self,**_args):
-        super().__init__(transport.get.reader(**_args['source']))
+        _source = _args['source']
+        _plugins = _source['plugins'] if 'plugins' in _source else None
+        
+        # super().__init__(transport.get.reader(**_args['source']))
+        super().__init__(transport.get.reader(**_source),_plugins)
+        
+        # _logger = 
         if 'target' in _args:
             self._targets = _args['target'] if type(_args['target']) == list else [_args['target']]
         else:

transport/plugins/__init__.py

@@ -114,8 +114,7 @@ class PluginLoader :
 
         _n = len(self._names)
         return len(set(self._modules.keys()) & set (self._names)) / _n
-    def apply(self,_data,_logger=None):
+    def apply(self,_data,_logger=[]):
-        _rows = []
         _input= {}
         
         for _name in self._modules :
@@ -136,8 +135,7 @@ class PluginLoader :
                 print (e)
             
             if _logger:
-                _logger(**_input)
+                _logger(_input)
-                pass
         return _data
     # def apply(self,_data,_name):
     #     """

transport/sql/common.py

@@ -9,6 +9,7 @@ import pandas as pd
 
 
 class Base:
+    __template__={"host":None,"port":1,"database":None,"table":None,"username":None,"password":None}
     def __init__(self,**_args):
         # print ([' ## ',_args])
         self._host = _args['host'] if 'host' in _args else 'localhost'

transport/sql/sqlserver.py

@@ -7,6 +7,7 @@ from transport.sql.common import Base, BaseReader, BaseWriter
 
 
 class MsSQLServer:
+    
     def __init__(self,**_args) :
         super().__init__(**_args)
         pass