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chore(appsettings): one squashed migration for a new database
0001_initial to 0024_log_retention_setting are mostly RunPython steps that added, renamed, re-chose and described setting rows since 2020. A squashed migration now creates the table in its final shape and inserts the 38 rows those steps leave; it replaces all 24, so a new database runs it alone. The 24 stay beside it, as Django's squashing expects until every installation has applied them: a database that applied them all records the squashed one without running anything, and one that stopped between them (an older release, or an upstream installation) applies the rest of them first. Checked: - on a new database its rows equal the old chain's (name, key, value, choices, description of every row); - on a copy of a running panel's database (all 24 applied) migrate plans nothing for appsettings; - a database migrated by the old code to 0023 applies 0024 and then records the squashed migration, with the same 38 rows; - makemigrations finds no change. It inserts its rows on the database being migrated, as the replaced steps do. The tests of the replaced steps stay, since an installation that stopped between them still runs them; the two that checked a few rows' columns became one that checks every row's columns and description, and a value is one of its choices.
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catborise
parent
f1f52aac42
commit
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2 changed files with 169 additions and 24 deletions
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"""The settings table and its rows as migrations 0001 to 0024 left them,
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which this migration replaces."""
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from django.db import migrations, models
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# (name, key, value, choices, description) of each setting, in their old order
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SETTINGS = [
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('Theme', 'BOOTSTRAP_THEME', 'zephyr', '',
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'Bootstrap CSS & Bootswatch Theme'),
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('All Instances View Style', 'VIEW_INSTANCES_LIST_STYLE', 'grouped', 'grouped,nongrouped',
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'Instances page for administrators: VMs under their host, or one list'),
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('Logs per Page', 'LOGS_PER_PAGE', '100', '',
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'Rows per page on the Logs page'),
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('Multiple Owner for VM', 'ALLOW_INSTANCE_MULTIPLE_OWNER', 'True', 'True,False',
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'A VM can be given to more than one user'),
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('Quota Debug', 'QUOTA_DEBUG', 'True', 'True,False',
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'A quota refusal shows the numbers: what would be used and what is allowed'),
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('Disk Format', 'INSTANCE_VOLUME_DEFAULT_FORMAT', 'qcow2', 'raw,qcow,qcow2',
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'Format of new disk images in directory pools'),
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('Disk Bus', 'INSTANCE_VOLUME_DEFAULT_BUS', 'virtio', 'virtio,scsi,ide,usb,sata',
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'Bus of new disks'),
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('Disk SCSI Controller', 'INSTANCE_VOLUME_DEFAULT_SCSI_CONTROLLER', 'virtio-scsi', 'virtio-scsi,lsilogic',
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'Controller model for disks on the SCSI bus'),
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('Disk Cache', 'INSTANCE_VOLUME_DEFAULT_CACHE', 'directsync', 'default,directsync,none,unsafe,writeback,writethrough',
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'Cache mode of new disks'),
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('Disk IO Type', 'INSTANCE_VOLUME_DEFAULT_IO', 'default', 'default,native,threads',
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'I/O mode of new disks (native needs cache none or directsync)'),
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('Disk Detect Zeroes', 'INSTANCE_VOLUME_DEFAULT_DETECT_ZEROES', 'default', 'default,on,off,unmap',
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'Detect zeroes of new disks: how blocks of zeros the guest writes are stored'),
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('Disk Discard', 'INSTANCE_VOLUME_DEFAULT_DISCARD', 'default', 'default,unmap,ignore',
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"Discard of new disks (unmap: the guest's TRIM frees space in the image)"),
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('Disk Owner UID', 'INSTANCE_VOLUME_DEFAULT_OWNER_UID', '0', '',
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'Owner of new disk image files (0: root; qemu is often 107)'),
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('Disk Owner GID', 'INSTANCE_VOLUME_DEFAULT_OWNER_GID', '0', '',
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'Group of new disk image files (0: root; qemu is often 107)'),
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('VM CPU Mode', 'INSTANCE_CPU_DEFAULT_MODE', 'host-model', 'host-model,host-passthrough,maximum',
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'CPU mode chosen first for a new VM'),
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('VM Machine Type', 'INSTANCE_MACHINE_DEFAULT_TYPE', 'q35', 'q35,pc,virt',
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'Machine type chosen first on the new VM pages'),
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('VM Firmware Type', 'INSTANCE_FIRMWARE_DEFAULT_TYPE', 'BIOS', 'BIOS,UEFI',
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'Firmware chosen first for a new x86_64 VM'),
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('VM Architecture Type', 'INSTANCE_ARCH_DEFAULT_TYPE', 'x86_64', 'x86_64,i686,aarch64',
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'Architecture chosen first on the new VM pages'),
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('VM Clone Name Prefix', 'CLONE_INSTANCE_DEFAULT_PREFIX', 'instance', '',
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'Prefix of the names made for clones: prefix1, prefix2, ...'),
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('VM Clone Auto Name', 'CLONE_INSTANCE_AUTO_NAME', 'False', 'True,False',
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'Users who are not administrators get clone names made from the prefix'),
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('Show Access Root Pass', 'SHOW_ACCESS_ROOT_PASSWORD', 'False', 'True,False',
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"Show Root Password on a VM's Access tab"),
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('Show Access SSH Keys', 'SHOW_ACCESS_SSH_KEYS', 'False', 'True,False',
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"Show SSH Keys on a VM's Access tab"),
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('Console Scale', 'CONSOLE_SCALE', 'False', 'True,False',
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'The console starts scaled to its window'),
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('Console View-Only', 'CONSOLE_VIEW_ONLY', 'False', 'True,False',
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'The console starts view-only: no keyboard or mouse input'),
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('Console Resize Session', 'CONSOLE_RESIZE_SESSION', 'False', 'True,False',
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'The console starts asking the guest to fit its screen to the window'),
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('Console Clip Viewport', 'CONSOLE_CLIP_VIEWPORT', 'False', 'True,False',
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'The console starts clipped to its window, without scaling'),
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('VM DRBD Status', 'VM_DRBD_STATUS', 'False', 'True,False',
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"The Instances page shows each VM's DRBD state"),
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('VM CD-ROM Device', 'INSTANCE_CDROM_ADD', 'sata', 'None,ide,sata,scsi',
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'Bus of the CD-ROM a new VM gets (None: no CD-ROM)'),
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('VM Video Type', 'INSTANCE_VIDEO_DEFAULT_TYPE', 'vga', 'None,virtio,vga,cirrus,vmvga,bochs,ramfb',
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'Video device chosen first for a new VM'),
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('VM Input Device', 'INSTANCE_INPUT_DEFAULT_DEVICE', 'default', 'None,default,virtio,usb',
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'Input device chosen first for a new VM (None: no input device)'),
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('VM NIC Type', 'INSTANCE_NIC_DEFAULT_TYPE', 'default', 'default,e1000,e1000e,rtl8139,virtio',
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"Network card model chosen first for a new VM (default: libvirt's choice)"),
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('Login Failure Limit', 'LOGIN_FAILURE_LIMIT', '5', '',
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'Failed logins of a user from one address before it is locked'),
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('Login Lockout Minutes', 'LOGIN_LOCKOUT_MINUTES', '15', '',
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'How long a locked login stays locked, in minutes'),
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('Snapshot Free Percent', 'SNAPSHOT_FREE_SPACE_PERCENT', '10', '',
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"Free space a storage pool keeps for a snapshot, in percent of the VM's disks in it (0: none)"),
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('Snapshot Free Min GiB', 'SNAPSHOT_FREE_SPACE_MIN_GIB', '1', '',
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'Free space a storage pool keeps for a snapshot at least, in GiB (0: none)'),
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('Worker Concurrency', 'WORKER_CONCURRENCY', '4', '',
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'Jobs the worker runs at the same time (1-16)'),
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('Job Retention Days', 'JOB_RETENTION_DAYS', '30', '',
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'Days finished jobs stay in the job history (1-3650)'),
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('Log Retention Days', 'LOG_RETENTION_DAYS', '365', '',
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'Days the Logs page keeps its rows (1-3650)'),
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]
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def add_settings(apps, schema_editor):
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AppSettings = apps.get_model("appsettings", "AppSettings")
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AppSettings.objects.using(schema_editor.connection.alias).bulk_create(
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AppSettings(name=name, key=key, value=value, choices=choices, description=description)
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for name, key, value, choices, description in SETTINGS
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)
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class Migration(migrations.Migration):
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replaces = [
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("appsettings", "0001_initial"),
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("appsettings", "0002_auto_20200527_1603"),
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("appsettings", "0003_auto_20200615_0637"),
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("appsettings", "0004_auto_20200716_0637"),
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("appsettings", "0005_auto_20200911_1233"),
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("appsettings", "0006_auto_20220630_0717"),
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("appsettings", "0007_auto_20220905_0918"),
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("appsettings", "0008_auto_20220905_1459"),
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("appsettings", "0009_alter_appsettings_id"),
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("appsettings", "0010_auto_20231030_1305"),
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("appsettings", "0011_alter_appsettings_id"),
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("appsettings", "0012_remove_spice_qemu_console_type"),
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("appsettings", "0013_remove_qemu_console_default_type"),
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("appsettings", "0014_login_lockout_settings"),
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("appsettings", "0015_remove_clone_instance_auto_migrate"),
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("appsettings", "0016_nic_type_rtl8139"),
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("appsettings", "0017_snapshot_free_space_settings"),
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("appsettings", "0018_worker_settings"),
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("appsettings", "0019_prebuilt_themes"),
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("appsettings", "0020_fix_setting_choices"),
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("appsettings", "0021_setting_descriptions"),
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("appsettings", "0022_cpu_mode_choices"),
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("appsettings", "0023_remove_bottom_bar"),
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("appsettings", "0024_log_retention_setting"),
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]
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initial = True
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dependencies = []
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operations = [
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migrations.CreateModel(
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name="AppSettings",
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fields=[
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("id", models.AutoField(auto_created=True, primary_key=True, serialize=False, verbose_name="ID")),
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("name", models.CharField(max_length=25, verbose_name="name")),
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("key", models.CharField(db_index=True, max_length=50, unique=True, verbose_name="key")),
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("value", models.CharField(max_length=25, verbose_name="value")),
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("choices", models.CharField(max_length=70, verbose_name="choices")),
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("description", models.CharField(max_length=100, null=True, verbose_name="description")),
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],
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),
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migrations.RunPython(add_settings, migrations.RunPython.noop),
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]
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@ -1,6 +1,8 @@
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"""The default settings rows of the first migrations carry fixed ids, which a
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PostgreSQL id sequence does not see. A later migration that inserts without
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an id must not collide with them."""
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"""The settings rows: those a new database gets fit their columns (PostgreSQL
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refuses a longer value, SQLite does not), say what they do, and hold one of
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their choices. The steps the squashed migration replaces still run on an
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installation that stopped between them: they repair its rows, and their
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inserts do not collide with the fixed ids of the first ones."""
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import importlib
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import unittest
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@ -42,27 +44,6 @@ class NicTypeTestCase(TestCase):
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self.assertEqual((setting.value, setting.choices), ("rtl8139", "default,e1000,e1000e,rtl8139,virtio"))
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class SnapshotFreeSpaceSettingsTestCase(TestCase):
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def test_the_rows_fit_their_columns(self):
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# PostgreSQL refuses a value longer than the column, sqlite does not
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for key in ("SNAPSHOT_FREE_SPACE_PERCENT", "SNAPSHOT_FREE_SPACE_MIN_GIB"):
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setting = AppSettings.objects.get(key=key)
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for field in ("name", "key", "value", "description"):
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limit = AppSettings._meta.get_field(field).max_length
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if limit:
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self.assertLessEqual(len(getattr(setting, field)), limit, f"{key} {field}")
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class WorkerSettingsTestCase(TestCase):
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def test_the_rows_fit_their_columns(self):
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for key in ("WORKER_CONCURRENCY", "JOB_RETENTION_DAYS", "LOG_RETENTION_DAYS"):
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setting = AppSettings.objects.get(key=key)
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for field in ("name", "key", "value", "description"):
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limit = AppSettings._meta.get_field(field).max_length
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if limit:
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self.assertLessEqual(len(getattr(setting, field)), limit, f"{key} {field}")
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choices_fix = importlib.import_module("appsettings.migrations.0020_fix_setting_choices")
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@ -116,3 +97,26 @@ class CpuModeChoicesTestCase(TestCase):
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cpu_mode.fix_cpu_mode(apps, SimpleNamespace(connection=connection))
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setting = AppSettings.objects.get(key="INSTANCE_CPU_DEFAULT_MODE")
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self.assertEqual((setting.value, setting.choices), (new, "host-model,host-passthrough,maximum"))
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class SettingsRowsTestCase(TestCase):
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def test_every_row_fits_its_columns_and_has_a_description(self):
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for setting in AppSettings.objects.all():
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with self.subTest(key=setting.key):
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self.assertTrue(setting.description)
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for field in ("name", "key", "value", "choices", "description"):
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limit = AppSettings._meta.get_field(field).max_length
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self.assertLessEqual(len(getattr(setting, field)), limit, field)
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def test_a_setting_with_choices_holds_one_of_them(self):
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for setting in AppSettings.objects.exclude(choices=""):
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with self.subTest(key=setting.key):
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self.assertIn(setting.value, setting.choices_as_list())
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def test_the_choices_offer_only_what_the_panel_uses(self):
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rows = {s.key: (s.value, s.choices) for s in AppSettings.objects.all()}
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self.assertEqual(rows["INSTANCE_NIC_DEFAULT_TYPE"][1], "default,e1000,e1000e,rtl8139,virtio")
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self.assertEqual(rows["INSTANCE_CPU_DEFAULT_MODE"], ("host-model", "host-model,host-passthrough,maximum"))
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self.assertEqual(rows["INSTANCE_MACHINE_DEFAULT_TYPE"], ("q35", "q35,pc,virt"))
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self.assertEqual(rows["INSTANCE_CDROM_ADD"], ("sata", "None,ide,sata,scsi"))
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self.assertEqual(rows["CLONE_INSTANCE_DEFAULT_PREFIX"][1], "")
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