Files
zulip/tools/renumber-migrations
Anders Kaseorg df001db1a9 black: Reformat with Black 23.
Black 23 enforces some slightly more specific rules about empty line
counts and redundant parenthesis removal, but the result is still
compatible with Black 22.

(This does not actually upgrade our Python environment to Black 23
yet.)

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-02-02 10:40:13 -08:00

89 lines
3.1 KiB
Python
Executable File

#!/usr/bin/env python3
import fileinput
import glob
import os
import re
import sys
from typing import List
def validate_order(order: List[int], length: int) -> None:
if len(order) != length:
print("Please enter the sequence of all the conflicting files at once")
sys.exit(1)
for i in order:
if i > length or i < 1 or order.count(i) > 1:
print("Incorrect input")
sys.exit(1)
def renumber_migration(conflicts: List[str], order: List[int], last_correct_migration: str) -> None:
stack: List[str] = []
for i in order:
if conflicts[i - 1][0:4] not in stack:
stack.append(conflicts[i - 1][0:4])
else:
# Replace dependencies with the last correct migration
file = fileinput.FileInput("zerver/migrations/" + conflicts[i - 1], inplace=True)
for line in file:
print(re.sub(r"[\d]+(_[a-z0-9]+)+", last_correct_migration, line), end="")
# Rename the migration indexing at the end
new_name = conflicts[i - 1].replace(
conflicts[i - 1][0:4], f"{int(last_correct_migration[0:4]) + 1:04}"
)
os.rename("zerver/migrations/" + conflicts[i - 1], "zerver/migrations/" + new_name)
last_correct_migration = new_name.replace(".py", "")
def resolve_conflicts(conflicts: List[str], files_list: List[str]) -> None:
print("Conflicting migrations:")
for i in range(0, len(conflicts)):
print(str(i + 1) + ". " + conflicts[i])
order_input = input("Enter the order in which these migrations should be arranged: ")
order = list(map(int, order_input.split()))
validate_order(order, len(conflicts))
last_correct_migration = conflicts[order[0] - 1]
last_correct_migration = last_correct_migration.replace(".py", "")
renumber_migration(conflicts, order, last_correct_migration)
if __name__ == "__main__":
MIGRATIONS_TO_SKIP = {"0209", "0261"}
while True:
conflicts: List[str] = []
stack: List[str] = []
files_list = [os.path.basename(path) for path in glob.glob("zerver/migrations/????_*.py")]
file_index = [file[0:4] for file in files_list]
for file in file_index:
migration_number = file[0:4]
counter = file_index.count(migration_number)
if (
counter > 1
and file[0:4] not in stack
# When we need to backport migrations to a previous
# release, we sometimes end up with multiple having
# the same ID number (which isn't a problem; the
# migrations graph structure, not the IDs, is what
# matters).
and migration_number not in MIGRATIONS_TO_SKIP
):
conflicts += [
file_name for file_name in files_list if file_name.startswith(migration_number)
]
stack.append(migration_number)
if len(conflicts) > 0:
resolve_conflicts(conflicts, files_list)
else:
break
print("All conflicts resolved")