Merged in usage of session module global object instead of singleton class;...

Merged in usage of session module global object instead of singleton class; still working through tests

model_server/extensions/ilastik/router.py

 from fastapi import APIRouter, HTTPException
 
-from model_server.base.session import session
-from model_server.base.validators import  validate_workflow_inputs
+from base.session import session
+from base.validators import  validate_workflow_inputs
 
-from model_server.extensions.ilastik import models as ilm
-from model_server.base.models import ParameterExpectedError
-from model_server.extensions.ilastik.workflows import infer_px_then_ob_model
+from extensions.ilastik import models as ilm
+from extensions.ilastik.workflows import infer_px_then_ob_model
 
 router = APIRouter(
     prefix='/ilastik',

tests/test_session.py

@@ -3,7 +3,6 @@ import pathlib
 from pydantic import BaseModel
 import unittest
 
-import base.session
 from base.models import DummySemanticSegmentationModel
 from base.session import session
 
@@ -50,12 +49,6 @@ class TestGetSessionObject(unittest.TestCase):
         self.assertTrue(logfile2.exists())
         self.assertEqual(logfile1, logfile2, 'Reimporting session incorrectly creates new logfile')
 
-        from model_server.base.session import session as session3
-        self.assertEqual(session1, session3)
-        logfile3 = session3.logfile
-        self.assertTrue(logfile3.exists())
-        self.assertEqual(logfile1, logfile3, 'Reimporting session incorrectly creates new logfile')
-
     def test_log_warning(self):
         msg = 'A test warning'
         self.sesh.log_info(msg)