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https://github.com/zulip/zulip.git
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4db7ea2296
This commit adds `parse_migration_status`, which takes in the string output of `showmigrations` and parse it into key-value pair of installed apps and a list of its migration status. This is a prep commit to rework the check migrations function of import/export which will parse the output of `showmigrations` to write the `migration_status.json` file.
129 lines
4.9 KiB
Python
129 lines
4.9 KiB
Python
import os
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import re
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from importlib import import_module
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from io import StringIO
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from typing import Any, TypeAlias, TypedDict
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AppMigrations: TypeAlias = dict[str, list[str]]
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class MigrationStatusJson(TypedDict):
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migrations_by_app: AppMigrations
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zulip_version: str
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STALE_MIGRATIONS = [
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# Ignore django-guardian, which we installed until 1.7.0~3134
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("guardian", "0001_initial"),
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# Ignore django.contrib.sites, which we installed until 2.0.0-rc1~984.
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("sites", "0001_initial"),
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("sites", "0002_alter_domain_unique"),
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# These migrations (0002=>0028) were squashed into 0001, in 6fbddf578a6e
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# through a21f2d771553, 1.7.0~3135.
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("zerver", "0002_django_1_8"),
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("zerver", "0003_custom_indexes"),
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("zerver", "0004_userprofile_left_side_userlist"),
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("zerver", "0005_auto_20150920_1340"),
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("zerver", "0006_zerver_userprofile_email_upper_idx"),
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("zerver", "0007_userprofile_is_bot_active_indexes"),
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("zerver", "0008_preregistrationuser_upper_email_idx"),
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("zerver", "0009_add_missing_migrations"),
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("zerver", "0010_delete_streamcolor"),
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("zerver", "0011_remove_guardian"),
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("zerver", "0012_remove_appledevicetoken"),
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("zerver", "0013_realmemoji"),
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("zerver", "0014_realm_emoji_url_length"),
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("zerver", "0015_attachment"),
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("zerver", "0016_realm_create_stream_by_admins_only"),
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("zerver", "0017_userprofile_bot_type"),
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("zerver", "0018_realm_emoji_message"),
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("zerver", "0019_preregistrationuser_realm_creation"),
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("zerver", "0020_add_tracking_attachment"),
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("zerver", "0021_migrate_attachment_data"),
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("zerver", "0022_subscription_pin_to_top"),
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("zerver", "0023_userprofile_default_language"),
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("zerver", "0024_realm_allow_message_editing"),
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("zerver", "0025_realm_message_content_edit_limit"),
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("zerver", "0026_delete_mituser"),
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("zerver", "0027_realm_default_language"),
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("zerver", "0028_userprofile_tos_version"),
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# This migration was in python-social-auth, and was mistakenly removed
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# from its `replaces` in
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# https://github.com/python-social-auth/social-app-django/pull/25
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("default", "0005_auto_20160727_2333"),
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# This was a typo (twofactor for two_factor) corrected in
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# https://github.com/jazzband/django-two-factor-auth/pull/642
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("twofactor", "0001_squashed_0008_delete_phonedevice"),
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]
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def get_migration_status(**options: Any) -> str:
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from django.apps import apps
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from django.core.management import call_command
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from django.db import DEFAULT_DB_ALIAS
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from django.utils.module_loading import module_has_submodule
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verbosity = options.get("verbosity", 1)
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for app_config in apps.get_app_configs():
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if module_has_submodule(app_config.module, "management"):
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import_module(".management", app_config.name)
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app_label = options["app_label"] if options.get("app_label") else None
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db = options.get("database", DEFAULT_DB_ALIAS)
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out = StringIO()
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command_args = ["--list"]
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if app_label:
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command_args.append(app_label)
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call_command(
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"showmigrations",
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*command_args,
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database=db,
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no_color=options.get("no_color", False),
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settings=options.get("settings", os.environ["DJANGO_SETTINGS_MODULE"]),
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stdout=out,
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skip_checks=options.get("skip_checks", True),
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traceback=options.get("traceback", True),
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verbosity=verbosity,
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)
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out.seek(0)
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output = out.read()
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return re.sub(r"\x1b\[[0-9;]*m", "", output)
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def parse_migration_status(
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migration_status_print: str, stale_migrations: list[tuple[str, str]] = STALE_MIGRATIONS
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) -> AppMigrations:
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lines = migration_status_print.strip().split("\n")
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migrations_dict: AppMigrations = {}
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current_app = None
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line_prefix = ("[X]", "[ ]", "[-]", "(no migrations)")
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stale_migrations_dict: dict[str, list[str]] = {}
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for app, migration in stale_migrations:
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if app not in stale_migrations_dict:
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stale_migrations_dict[app] = []
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stale_migrations_dict[app].append(migration)
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for line in lines:
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line = line.strip()
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if not line.startswith(line_prefix) and line:
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current_app = line
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migrations_dict[current_app] = []
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elif line.startswith(line_prefix):
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assert current_app is not None
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apps_stale_migrations = stale_migrations_dict.get(current_app)
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if (
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apps_stale_migrations is not None
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and line != "(no migrations)"
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and line[4:] in apps_stale_migrations
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):
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continue
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migrations_dict[current_app].append(line)
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# Installed apps that have no migrations and we still use will have
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# "(no migrations)" as its only "migrations" list. Ones that just
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# have [] means it's just a left over stale app we can clean up.
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return {app: migrations for app, migrations in migrations_dict.items() if migrations != []}
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