Sindbad~EG File Manager

from sqlalchemy import create_engine, MetaData, Table, insert, select,update,delete,text
from sqlalchemy.sql import and_, or_
from core import app
import json
from .. import engine

#engine = create_engine(app.config['DATABASE_URI'])
# engine = create_engine(app.config['DATABASE_URI'],pool_size=5000,pool_pre_ping=True,pool_recycle=3600)
# engine = create_engine(app.config['DATABASE_URI'],pool_size=5000,max_overflow=100,pool_pre_ping=True,pool_recycle=3600)
# engine = create_engine(app.config['DATABASE_URI'], poolclass=None,pool_size=5000,max_overflow=100,pool_pre_ping=True,pool_recycle=3600)

class MSteps():
	def __init__(self):
		try:
			self.meta               = MetaData()
			self.m_work_type        = Table("m_steps", self.meta, autoload_with=engine)
		   
		except Exception as e:
			print(e)
	
	def usp_get_steps(self,step_no,society_id):
		sets = []
		try:
			connection = engine.raw_connection()
			cursor = connection.cursor()
			cursor.callproc("usp_get_steps",[step_no,society_id])
			while 1:
				#(column_name, type_, ignore_, ignore_, ignore_, null_ok, column_flags)
				names = [c[0] for c in cursor.description]
				set_ = []
				while 1:
					row_raw = cursor.fetchone()
					if row_raw is None:
						break
						
					row = dict(zip(names, row_raw))
					set_.append(row)
		
				sets.append(list(set_))
		
				if cursor.nextset() is None:
					break
		
				# nextset() doesn't seem to be sufficiant to tell the end.
				if cursor.description is None:
					break
		finally:
			# Return the connection to the pool (won't actually close).
			connection.close()
		for index,value in enumerate(sets) :
			if index == 0:
				if len(value) == 0:
					current_step = 0
				else:
					current_step = value[0]
				# cur_step = current_step['step_no']
			if index == 1:
				if len(value) == 0:
					pre_step = 0
				else:
					previous_step = value[0]
					pre_step      = previous_step['step_no']
			if index == 2:
				if len(value) == 0:
					nxt_step = 0
				else:
					next_step = value[0]
					nxt_step = next_step['step_no']   
		return current_step,pre_step,nxt_step

	def getlastStepNo(self,society_id):
		with engine.connect() as conn:
			stmt = text("select step_no from m_steps where society_id=:society_id  order by step_no desc limit 1;")
			results = conn.execute(stmt.bindparams(society_id=society_id))
			conn.close()
			return results.first()