comments and code adjustments

docs/operations/import_export.md

@@ -11,7 +11,12 @@ Simple scripts are provided as detailed below.
 To export from the source environment, run the following command from src directory:
 manage.py export_tables
 
-On a sandbox, connect to the sandbox (getgov-stable in ex below) and run the command:
+Connect to the source sandbox and run the command:
+cf ssh {source-app}
+/tmp/lifecycle/shell
+./manage.py export_tables
+
+example exporting from getgov-stable:
 cf ssh getgov-stable
 /tmp/lifecycle/shell
 ./manage.py export_tables
@@ -37,10 +42,13 @@ file from the target environment to local.  Run the below commands from local.
 Get passcode by running:
 cf ssh-code
 
-scp file from app (app is getgov-stable in example below) to local tmp:
-scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app getgov-stable --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 ssh.fr.cloud.gov:app/tmp/exported_tables.zip .
+scp file from source app to local file:
+scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app {source-app} --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 ssh.fr.cloud.gov:app/tmp/exported_tables.zip {local_file_path}
 when prompted, supply the passcode retrieved in the 'cf ssh-code' command
 
+example copying from stable to local cwd:
+scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app getgov-stable --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 ssh.fr.cloud.gov:app/tmp/exported_tables.zip .
+
 
 ### Import
 
@@ -53,7 +61,14 @@ that there are no database conflicts on import.
 
 In order to delete all rows from the appropriate tables, run the following
 command:
-manage.py clean_tables
+cf ssh {target-app}
+/tmp/lifecycle/shell
+./manage.py clean_tables
+
+example cleaning getgov-backup:
+cf ssh getgov-backup
+/tmp/lifecycle/backup
+./manage.py clean_tables
 
 For reference, this deletes all rows from the following tables:
 
@@ -76,12 +91,23 @@ To scp the exported_tables.zip file from local to the sandbox, run the following
 Get passcode by running:
 cf ssh-code
 
-scp file from app (app is getgov-stable in example below) to local cwd:
-scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app getgov-stable --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 tmp/exported_tables.zip ssh.fr.cloud.gov:app/tmp/exported_tables.zip
+scp file from local to target app:
+scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app {target-app} --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 {local_file_path} ssh.fr.cloud.gov:app/tmp/exported_tables.zip
 when prompted, supply the passcode retrieved in the 'cf ssh-code' command
 
+example copy of local file in tmp to getgov-backup:
+scp -P 2222 -o User=cf:$(cf curl /v3/apps/$(cf app getgov-backup --guid)/processes | jq -r '.resources[] | select(.type=="web") | .guid')/0 tmp/exported_tables.zip ssh.fr.cloud.gov:app/tmp/exported_tables.zip
+
+
 Then connect to a shell in the target environment, and run the following import command:
-manage.py import_tables
+cf ssh {target-app}
+/tmp/lifecycle/shell
+./manage.py import_tables
+
+example cleaning getgov-backup:
+cf ssh getgov-backup
+/tmp/lifecycle/backup
+./manage.py import_tables
 
 For reference, this imports tables in the following order:
 

src/registrar/admin.py

@@ -2272,8 +2272,7 @@ class PublicContactResource(resources.ModelResource):
                 self.create_instances.append(instance)
             else:
                 self.update_instances.append(instance)
-        else:
-            if not using_transactions and dry_run:
+        elif not using_transactions and dry_run:
             # we don't have transactions and we want to do a dry_run
             pass
         else:

src/registrar/management/commands/clean_tables.py

@@ -4,6 +4,8 @@ from django.core.management import BaseCommand
 from django.apps import apps
 from django.db import transaction
 
+from registrar.management.commands.utility.terminal_helper import TerminalHelper
+
 logger = logging.getLogger(__name__)
 
 
@@ -17,6 +19,24 @@ class Command(BaseCommand):
             logger.error("clean_tables cannot be run in production")
             return
         
+        TerminalHelper.prompt_for_execution(
+            system_exit_on_terminate=True,
+            info_to_inspect=f"""
+            This script will delete all rows from the following tables:
+             * Contact
+             * Domain
+             * DomainInformation
+             * DomainRequest
+             * DraftDomain
+             * Host
+             * HostIp
+             * PublicContact
+             * User
+             * Website
+            """,
+            prompt_title="Do you wish to proceed with these changes?",
+        )
+
         table_names = [
             "DomainInformation",
             "DomainRequest",

src/registrar/management/commands/import_tables.py

@@ -63,6 +63,9 @@ class Command(BaseCommand):
                 return
 
             # if table_name is Contact, clean the table first
+            # User table is loaded before Contact, and signals create
+            # rows in Contact table which break the import, so need
+            # to be cleaned again before running import on Contact table
             if table_name == "Contact":
                 self.clean_table(table_name)