Prepare for guest migration

Introduces the new identity type migration id, meant to be used when
migrating a person from another system.

The cerebrum guest import script has been expanded to use this new
migration id. The script has also gotten an option to import people
without the necessary IDs (NIN/Passport) so that we can generate IDs for
them in GREG. The can then be imported by cerebrum manually before we
add the remaning info from a different source. In this case we use old
info from UiO SAP.

greg/management/commands/import_guests.py

@@ -4,13 +4,12 @@ Import guestsdata from json.
 
 import datetime
 import json
-
 from typing import Optional
 
 import structlog
 
-# from django.conf import settings
 from django.core.management.base import BaseCommand, CommandParser
+from django.db import IntegrityError
 from django.utils.timezone import make_aware
 
 from greg.models import (
@@ -38,6 +37,7 @@ class Command(BaseCommand):
         Identity.IdentityType.FEIDE_ID,
         Identity.IdentityType.NORWEGIAN_NATIONAL_ID_NUMBER,
         Identity.IdentityType.PASSPORT_NUMBER,
+        Identity.IdentityType.MIGRATION_ID,
     ]
 
     REQUIRED_IDS = [
@@ -49,6 +49,7 @@ class Command(BaseCommand):
         super().__init__(*args, **kwargs)
         self._orgunit_id_type = "legacy_stedkode"
         self._end_date = datetime.datetime.today() + datetime.timedelta(days=100)
+        self._ignore_id_req = False
 
     def add_arguments(self, parser: CommandParser) -> None:
         parser.add_argument(
@@ -66,6 +67,12 @@ class Command(BaseCommand):
             type=datetime.date.fromisoformat,
             help="End date of roles. Default: today + 100 days",
         )
+        parser.add_argument(
+            "--ignore_id_req",
+            default=False,
+            action="store_true",
+            help="Imports people without required ids if set",
+        )
 
     def _find_person_from_ids(self, ids: dict) -> Optional[Person]:
         """
@@ -231,10 +238,31 @@ class Command(BaseCommand):
         matching_ids = [x for x in id_data if x["id_type"] in self.REQUIRED_IDS]
         return len(matching_ids) > 0
 
+    def create_migration_entry(self, person: Person, external_id: str):
+        """Mark the person with entity id from cerebrum"""
+
+        existing_entry = Identity.objects.filter(
+            person=person, type=Identity.IdentityType.MIGRATION_ID, value=external_id
+        )
+        if existing_entry:
+            return
+        try:
+            Identity.objects.create(
+                person=person,
+                type=Identity.IdentityType.MIGRATION_ID,
+                source="cerebrum",
+                value=external_id,
+                verified=Identity.Verified.AUTOMATIC,
+                verified_at=make_aware(datetime.datetime.now()),
+            )
+        except IntegrityError as e:
+            logger.error("Migration ID in use by a different person")
+            raise e
+
     def upsert_person(self, external_id: str, data: dict) -> Optional[Person]:
         """Add or update person"""
 
-        if not self._has_required_id(data["ids"]):
+        if not self._ignore_id_req and not self._has_required_id(data["ids"]):
             logger.error("missing_required_id", external_id=external_id)
             return None
 
@@ -263,6 +291,7 @@ class Command(BaseCommand):
             self.upsert_identity(person, identity)
         for role in data["role"]:
             self.upsert_role(person, role)
+        self.create_migration_entry(person, external_id)
         return person
 
     def handle(self, *args, **options):
@@ -272,6 +301,7 @@ class Command(BaseCommand):
 
         self._orgunit_id_type = options["orgunit_type"]
         self._end_date = options["end_date"]
+        self._ignore_id_req = options["ignore_id_req"]
 
         with open(options["file"], "r", encoding="UTF-8") as fp:
             persons = json.load(fp)

greg/migrations/0022_alter_identity_type.py

+# Generated by Django 4.0.2 on 2022-04-29 14:37
+
+from django.db import migrations, models
+
+
+class Migration(migrations.Migration):
+
+    dependencies = [
+        ("greg", "0021_identity_identity_type_value_unique"),
+    ]
+
+    operations = [
+        migrations.AlterField(
+            model_name="identity",
+            name="type",
+            field=models.CharField(
+                choices=[
+                    ("feide_id", "Feide Id"),
+                    ("feide_email", "Feide Email"),
+                    ("passport_number", "Passport Number"),
+                    ("norwegian_national_id_number", "Norwegian National Id Number"),
+                    ("private_email", "Private Email"),
+                    ("private_mobile", "Private Mobile Number"),
+                    ("migration_id", "Migration Id"),
+                ],
+                max_length=64,
+            ),
+        ),
+    ]

greg/models.py

@@ -272,6 +272,8 @@ class Identity(BaseModel):
         NORWEGIAN_NATIONAL_ID_NUMBER = "norwegian_national_id_number"
         PRIVATE_EMAIL = "private_email"
         PRIVATE_MOBILE_NUMBER = "private_mobile"
+        # Used to identify the id of this person in some other system
+        MIGRATION_ID = "migration_id"
 
     class Verified(models.TextChoices):
         AUTOMATIC = "automatic"