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))
            return results.first()