mattdrayer/api-org-migration: Moved api_manager data migration work to orgs app

lms/djangoapps/api_manager/migrations/0014_auto__del_organization.py → lms/djangoapps/organizations/migrations/0002_migrateorgdata.py

 # -*- coding: utf-8 -*-
 import datetime
+import logging
+
 from south.db import db
 from south.v2 import SchemaMigration
-from django.db import models
+from django.db import connection, models, transaction
+
+from organizations.models import Organization
+
+log = logging.getLogger(__name__)
 
 
 class Migration(SchemaMigration):
 
+    def print_message(self, msg):
+        print msg
+        log.info(msg)
+
     def forwards(self, orm):
-        # Deleting model 'Organization'
-        db.delete_table('api_manager_organization')
+        if not db.dry_run:
+            existing_entries = Organization.objects.all().count()
+            self.print_message('EXISTING ENTRIES: {}'.format(existing_entries))
+            if existing_entries == 0:
+                try:
+                    cursor = connection.cursor()
+                    cursor.execute('INSERT INTO organizations_organization SELECT * from api_manager_organization')
+                    log_msg = 'organizations entries moved from api_manager to organizations app'
+                    self.print_message(log_msg)
+
+                    cursor.execute('INSERT INTO organizations_organization_workgroups '
+                                   'SELECT * from api_manager_organization_workgroups')
+                    log_msg = 'organization_workgroups entries moved from api_manager to organizations app'
+                    self.print_message(log_msg)
 
-        # Removing M2M table for field users on 'Organization'
-        db.delete_table('api_manager_organization_users')
+                    cursor.execute('INSERT INTO organizations_organization_users '
+                                   'SELECT * from api_manager_organization_users')
+                    log_msg = 'organization_users entries moved from api_manager to organizations app'
+                    self.print_message(log_msg)
 
-        # Removing M2M table for field groups on 'Organization'
-        db.delete_table('api_manager_organization_groups')
+                    cursor.execute('INSERT INTO organizations_organization_groups '
+                                   'SELECT * from api_manager_organization_groups')
+                    log_msg = 'organization_groups entries moved from api_manager to organizations app'
+                    self.print_message(log_msg)
+                    transaction.commit()
 
-        # Removing M2M table for field workgroups on 'Organization'
-        db.delete_table('api_manager_organization_workgroups')
+                    # Deleting model 'Organization'
+                    db.delete_table('api_manager_organization')
 
+                    # Removing M2M table for field users on 'Organization'
+                    db.delete_table('api_manager_organization_users')
+
+                    # Removing M2M table for field groups on 'Organization'
+                    db.delete_table('api_manager_organization_groups')
+
+                    # Removing M2M table for field workgroups on 'Organization'
+                    db.delete_table('api_manager_organization_workgroups')
+
+                except Exception as e:
+                    log_msg = e.message
+                    self.print_message(log_msg)
+            else:
+                log_msg = 'oroganizations_organization is not empty. You might have already filled it.'
+                self.print_message(log_msg)
 
     def backwards(self, orm):
         # Adding model 'Organization'
@@ -60,7 +102,6 @@ class Migration(SchemaMigration):
         ))
         db.create_unique('api_manager_organization_workgroups', ['organization_id', 'workgroup_id'])
 
-
     models = {
         'api_manager.coursecontentgrouprelationship': {
             'Meta': {'unique_together': "(('course_id', 'content_id', 'group_profile'),)", 'object_name': 'CourseContentGroupRelationship'},
@@ -158,4 +199,4 @@ class Migration(SchemaMigration):
         }
     }
 
-    complete_apps = ['api_manager']
\ No newline at end of file
+    complete_apps = ['api_manager']