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"""CLI integration."""
from __future__ import annotations
import logging
import re
import sys
from pathlib import Path
from typing import TYPE_CHECKING, List, Optional, Pattern, Union
import click
from playhouse.db_url import connect
from .logs import logger
from .models import MIGRATE_TABLE
from .router import Router
if TYPE_CHECKING:
from peewee_migrate.types import TParams
CLEAN_RE: Pattern = re.compile(r"\s+$", re.M)
VERBOSE: List[str] = ["WARNING", "INFO", "DEBUG", "NOTSET"]
def get_router(
directory: Optional[Union[str, Path]] = None,
database: Optional[str] = None,
migratetable: str = MIGRATE_TABLE,
verbose: int = 0,
) -> Router:
"""Load and initialize a router."""
config: TParams = {}
logging_level: str = VERBOSE[verbose]
ignore = schema = None
if directory:
directory = Path(directory)
try:
with directory.joinpath("conf.py").open() as cfg:
code = compile(cfg.read(), "<string>", "exec", dont_inherit=True)
exec(code, config, config)
database = config.get("DATABASE", database)
ignore = config.get("IGNORE", ignore)
schema = config.get("SCHEMA", schema)
migratetable = config.get("MIGRATE_TABLE", migratetable)
logging_level = config.get("LOGGING_LEVEL", logging_level).upper()
except IOError:
pass
if isinstance(database, str):
database = connect(database)
logger.setLevel(logging_level)
if not database:
logger.error("Database is undefined")
return sys.exit(1)
try:
return Router(
database,
migrate_table=migratetable,
migrate_dir=directory,
ignore=ignore,
schema=schema,
)
except RuntimeError:
logger.exception("Failed to initialize router")
return sys.exit(1)
@click.group()
def cli():
"""Migrate database with Peewee ORM."""
logging.basicConfig(level=logging.INFO)
@cli.command()
@click.option("--name", default=None, help="Select migration")
@click.option("--database", default=None, help="Database connection")
@click.option("--directory", default="migrations", help="Directory where migrations are stored")
@click.option("--fake", is_flag=True, default=False, help="Run migration as fake.")
@click.option("--migratetable", default="migratehistory", help="Migration table.")
@click.option("-v", "--verbose", count=True)
def migrate( # noqa:
name: Optional[str] = None,
database: Optional[str] = None,
directory: Optional[str] = None,
migratetable: str = MIGRATE_TABLE,
verbose: int = 0,
fake: bool = False, # noqa:
):
"""Migrate database."""
router = get_router(directory, database, migratetable, verbose)
migrations = router.run(name, fake=fake)
if migrations:
click.echo("Migrations completed: %s" % ", ".join(migrations))
@cli.command()
@click.argument("name")
@click.option(
"--auto",
default=False,
is_flag=True,
help="Scan sources and create db migrations automatically. Supports autodiscovery.",
)
@click.option(
"--auto-source",
default=None,
help=(
"Set to python module path for changes autoscan (e.g. 'package.models'). "
"Current directory will be recursively scanned by default."
),
)
@click.option("--database", default=None, help="Database connection")
@click.option("--directory", default="migrations", help="Directory where migrations are stored")
@click.option("--migratetable", default="migratehistory", help="Migration table.")
@click.option("-v", "--verbose", count=True)
def create( # noqa:
name: Optional[str] = None,
database: Optional[str] = None,
directory: Optional[str] = None,
migratetable: Optional[str] = None,
verbose: int = 0,
auto: bool = False, # noqa:
auto_source: Optional[str] = None,
):
"""Create a migration."""
router: Router = get_router(directory, database, migratetable or MIGRATE_TABLE, verbose)
router.create(name or "auto", auto=auto_source if auto and auto_source else auto)
@cli.command()
@click.option(
"--count",
required=False,
default=1,
type=int,
help="Number of last migrations to be rolled back.Ignored in case of non-empty name",
)
@click.option("--database", default=None, help="Database connection")
@click.option("--directory", default="migrations", help="Directory where migrations are stored")
@click.option("--migratetable", default="migratehistory", help="Migration table.")
@click.option("-v", "--verbose", count=True)
def rollback(
database: Optional[str] = None,
directory: Optional[str] = None,
migratetable: Optional[str] = None,
verbose: int = 0,
count: int = 1,
):
"""Rollback a migration with the given steps --count of last migrations as integer number"""
router: Router = get_router(directory, database, migratetable or MIGRATE_TABLE, verbose)
if len(router.done) < count:
raise RuntimeError(
"Unable to rollback %s migrations from %s: %s" % (count, len(router.done), router.done)
)
for _ in range(count):
router.rollback()
@cli.command()
@click.option("--database", default=None, help="Database connection")
@click.option("--directory", default="migrations", help="Directory where migrations are stored")
@click.option("--migratetable", default="migratehistory", help="Migration table.")
@click.option("-v", "--verbose", count=True)
def list( # noqa:
database: Optional[str] = None,
directory: Optional[str] = None,
migratetable: Optional[str] = None,
verbose: int = 0,
):
"""List migrations."""
router: Router = get_router(directory, database, migratetable or MIGRATE_TABLE, verbose)
click.echo("Migrations are done:")
click.echo("\n".join(router.done))
click.echo("")
click.echo("Migrations are undone:")
click.echo("\n".join(router.diff))
@cli.command()
@click.option("--database", default=None, help="Database connection")
@click.option("--directory", default="migrations", help="Directory where migrations are stored")
@click.option("--migratetable", default="migratehistory", help="Migration table.")
@click.option("-v", "--verbose", count=True)
def merge(
database: Optional[str] = None,
directory: Optional[str] = None,
migratetable: Optional[str] = None,
verbose: int = 0,
):
"""Merge migrations into one."""
router: Router = get_router(directory, database, migratetable or MIGRATE_TABLE, verbose)
router.merge()