mirror of
https://gitlab.archlinux.org/archlinux/aurweb.git
synced 2025-02-03 10:43:03 +01:00
b1121dc6ca
MySql defaults to `utf8` and case insensitive collation so migrate these to case sensitive and `utf8mb4` Closes #21 Signed-off-by: Leonidas Spyropoulos <artafinde@gmail.com>
78 lines
2 KiB
Python
78 lines
2 KiB
Python
"""utf8mb4 charset and collation
|
|
|
|
Revision ID: 56e2ce8e2ffa
|
|
Revises: ef39fcd6e1cd
|
|
Create Date: 2021-05-17 14:23:00.008479
|
|
|
|
"""
|
|
from alembic import op
|
|
|
|
# revision identifiers, used by Alembic.
|
|
revision = '56e2ce8e2ffa'
|
|
down_revision = 'ef39fcd6e1cd'
|
|
branch_labels = None
|
|
depends_on = None
|
|
|
|
# Tables affected by charset/collate change
|
|
tables = ['AccountTypes', 'ApiRateLimit', 'Bans', 'DependencyTypes', 'Groups', 'Licenses', 'OfficialProviders',
|
|
'PackageBases', 'PackageBlacklist', 'PackageComments', 'PackageDepends', 'PackageKeywords',
|
|
'PackageRelations', 'PackageRequests', 'PackageSources', 'Packages', 'RelationTypes', 'RequestTypes',
|
|
'SSHPubKeys', 'Sessions', 'TU_VoteInfo', 'Terms', 'Users']
|
|
|
|
# Indexes affected by charset/collate change
|
|
# Map of Unique Indexes key = index_name, value = [table_name, column1, column2]
|
|
indexes = {'ProviderNameProvides': ['OfficialProviders', 'Name', 'Provides']}
|
|
|
|
# Source charset/collation, before this migration is run.
|
|
src_charset = "utf8"
|
|
src_collate = "utf8_general_ci"
|
|
|
|
# Destination charset/collation, after this migration is run.
|
|
dst_charset = "utf8mb4"
|
|
dst_collate = "utf8mb4_bin"
|
|
|
|
|
|
def rebuild_unique_indexes_with_str_cols():
|
|
for idx_name in indexes:
|
|
sql = f"""
|
|
DROP INDEX IF EXISTS {idx_name}
|
|
ON {indexes.get(idx_name)[0]}
|
|
"""
|
|
op.execute(sql)
|
|
sql = f"""
|
|
CREATE UNIQUE INDEX {idx_name}
|
|
ON {indexes.get(idx_name)[0]}
|
|
({indexes.get(idx_name)[1]}, {indexes.get(idx_name)[2]})
|
|
"""
|
|
op.execute(sql)
|
|
|
|
|
|
def do_all(iterable, fn):
|
|
for element in iterable:
|
|
fn(element)
|
|
|
|
|
|
def upgrade():
|
|
def op_execute(table):
|
|
sql = f"""
|
|
ALTER TABLE {table}
|
|
CONVERT TO CHARACTER SET {dst_charset}
|
|
COLLATE {dst_collate}
|
|
"""
|
|
op.execute(sql)
|
|
|
|
do_all(tables, op_execute)
|
|
rebuild_unique_indexes_with_str_cols()
|
|
|
|
|
|
def downgrade():
|
|
def op_execute(table):
|
|
sql = f"""
|
|
ALTER TABLE {table}
|
|
CONVERT TO CHARACTER SET {src_charset}
|
|
COLLATE {src_collate}
|
|
"""
|
|
op.execute(sql)
|
|
|
|
do_all(tables, op_execute)
|
|
rebuild_unique_indexes_with_str_cols()
|