TMSS-332: Add directory, archive_location, archive_subdirectory to filesystem and project models

SAS/TMSS/src/tmss/tmssapp/migrations/0001_initial.py

-# Generated by Django 3.0.9 on 2020-08-19 13:24
+# Generated by Django 3.0.8 on 2020-09-02 16:52
 
 from django.conf import settings
 import django.contrib.postgres.fields
@@ -288,6 +288,7 @@ class Migration(migrations.Migration):
                 ('name', models.CharField(help_text='Human-readable name of this object.', max_length=128)),
                 ('description', models.CharField(help_text='A longer description of this object.', max_length=255)),
                 ('capacity', models.BigIntegerField(help_text='Capacity in bytes')),
+                ('directory', models.CharField(help_text='Root directory under which we are allowed to write our data.', max_length=1024)),
             ],
             options={
                 'abstract': False,
@@ -342,6 +343,7 @@ class Migration(migrations.Migration):
                 ('private_data', models.BooleanField(default=True, help_text='True if data of this project is sensitive. Sensitive data is not made public.')),
                 ('expert', models.BooleanField(default=False, help_text='Expert projects put more responsibility on the PI.')),
                 ('filler', models.BooleanField(default=False, help_text='Use this project to fill up idle telescope time.')),
+                ('archive_subdirectory', models.CharField(help_text='Subdirectory in which this project will store its data in the LTA. The full directory is constructed by prefixing with archive_location→directory.', max_length=1024)),
             ],
             options={
                 'abstract': False,
@@ -1044,6 +1046,11 @@ class Migration(migrations.Migration):
             name='resource_type',
             field=models.ForeignKey(help_text='Resource type.', on_delete=django.db.models.deletion.PROTECT, to='tmssapp.ResourceType'),
         ),
+        migrations.AddField(
+            model_name='project',
+            name='archive_location',
+            field=models.ForeignKey(help_text='Ingest data to this LTA cluster only (NULLable). NULL means: no preference.', null=True, on_delete=django.db.models.deletion.PROTECT, to='tmssapp.Filesystem'),
+        ),
         migrations.AddField(
             model_name='project',
             name='cycles',

SAS/TMSS/src/tmss/tmssapp/models/scheduling.py

@@ -308,6 +308,13 @@ class DataproductTransform(BasicCommon):
 class Filesystem(NamedCommon):
     capacity = BigIntegerField(help_text='Capacity in bytes')
     cluster = ForeignKey('Cluster', on_delete=PROTECT, help_text='Cluster hosting this filesystem.')
+    directory = CharField(max_length=1024, help_text='Root directory under which we are allowed to write our data.')
+
+    def save(self, force_insert=False, force_update=False, using=None, update_fields=None):
+        if self.directory and not self.directory.endswith('/'):
+            raise ValueError('directory value must end with a trailing slash!')  # todo: ...and needs to start with slash?
+
+        super().save(force_insert, force_update, using, update_fields)
 
 
 class Cluster(NamedCommon):

SAS/TMSS/src/tmss/tmssapp/models/specification.py

@@ -323,6 +323,16 @@ class Project(NamedCommonPK):
     filler = BooleanField(default=False, help_text='Use this project to fill up idle telescope time.')
     project_category = ForeignKey('ProjectCategory', null=True, on_delete=PROTECT, help_text='Project category.')
     period_category = ForeignKey('PeriodCategory', null=True, on_delete=PROTECT, help_text='Period category.')
+    archive_location = ForeignKey('Filesystem', null=True, on_delete=PROTECT, help_text='Ingest data to this LTA cluster only (NULLable). NULL means: no preference.')
+    archive_subdirectory = CharField(max_length=1024, help_text='Subdirectory in which this project will store its data in the LTA. The full directory is constructed by prefixing with archive_location→directory.')
+
+    def save(self, force_insert=False, force_update=False, using=None, update_fields=None):
+        if self.archive_subdirectory and not self.archive_subdirectory.endswith('/'):
+            raise ValueError('directory value must end with a trailing slash!')
+        if self.archive_subdirectory and self.archive_subdirectory.startswith('/'):
+            raise ValueError('directory value must be a relative path (and not start with a slash)!')
+
+        super().save(force_insert, force_update, using, update_fields)
 
     # JK, 29/07/20 - after discussion with Sander, it turns out that the ticket TMSS-277 was a misunderstanding.
     #  'default' does not refer to 'default values' that are supposed to be filled in by the backend.