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048_version_3_8_0.py
88 lines | 3.0 KiB | text/x-python | PythonLexer
# -*- coding: utf-8 -*-
import hashlib
import logging
from alembic.migration import MigrationContext
from alembic.operations import Operations
from sqlalchemy import Text, String, Column
from sqlalchemy.engine import reflection
from sqlalchemy.sql import text
from rhodecode.lib.dbmigrate.versions import _reset_base
from rhodecode.lib.utils2 import safe_str
from rhodecode.model import meta, init_model_encryption
log = logging.getLogger(__name__)
def upgrade(migrate_engine):
"""
Upgrade operations go here.
Don't create your own engine; bind migrate_engine to your metadata
"""
_reset_base(migrate_engine)
from rhodecode.lib.dbmigrate.schema import db_3_7_0_0
init_model_encryption(db_3_7_0_0)
context = MigrationContext.configure(migrate_engine.connect())
op = Operations(context)
repository = db_3_7_0_0.Repository.__table__
repo_name_column = repository.columns.repo_name
clone_uri_column = repository.columns.clone_uri
indexes = _get_indexes_list(migrate_engine, repository.name)
repo_name_indexes = [
i['name'] for i in indexes if 'repo_name' in i['column_names']]
constraints = _get_unique_constraint_list(migrate_engine, repository.name)
repo_name_constraints = [
c['name'] for c in constraints if 'repo_name' in c['column_names']]
with op.batch_alter_table(repository.name) as batch_op:
repo_name_idx = 'r_repo_name_idx'
if repo_name_idx in repo_name_indexes:
batch_op.drop_index(repo_name_idx)
for name in repo_name_constraints:
if name: # sqlite can have this empty, then it raises an error
batch_op.drop_constraint(name, type_='unique')
batch_op.alter_column(repo_name_column.name, type_=Text)
batch_op.alter_column(clone_uri_column.name, type_=Text)
batch_op.create_index(
'r_repo_name_idx', ['repo_name'], mysql_length=255)
batch_op.add_column(Column('repo_name_hash', String(40), unique=False))
_generate_repo_name_hashes(db_3_7_0_0, op, meta.Session)
with op.batch_alter_table(repository.name) as batch_op:
batch_op.create_unique_constraint(
'uq_repo_name_hash', ['repo_name_hash'])
def downgrade(migrate_engine):
pass
def _generate_repo_name_hashes(models, op, session):
repositories = models.Repository.get_all()
for repository in repositories:
hash_ = hashlib.sha1(safe_str(repository.repo_name)).hexdigest()
params = {'hash': hash_, 'id': repository.repo_id}
query = text(
'UPDATE repositories SET repo_name_hash = :hash'
' WHERE repo_id = :id').bindparams(**params)
op.execute(query)
session().commit()
def _get_unique_constraint_list(migrate_engine, table_name):
inspector = reflection.Inspector.from_engine(migrate_engine)
return inspector.get_unique_constraints(table_name)
def _get_indexes_list(migrate_engine, table_name):
inspector = reflection.Inspector.from_engine(migrate_engine)
return inspector.get_indexes(table_name)