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bac38edd48
Some of the columns that were changed still want to be case insensitive. Good thing our tables have nice separation. Signed-off-by: Kevin Morris <kevr@0cost.org>
104 lines
3 KiB
Python
104 lines
3 KiB
Python
"""utf8mb4 charset and collation
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Revision ID: 56e2ce8e2ffa
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Revises: ef39fcd6e1cd
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Create Date: 2021-05-17 14:23:00.008479
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"""
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from alembic import op
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import aurweb.config
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# revision identifiers, used by Alembic.
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revision = '56e2ce8e2ffa'
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down_revision = 'ef39fcd6e1cd'
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branch_labels = None
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depends_on = None
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# Tables affected by charset/collate change
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tables = [
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('AccountTypes', 'utf8mb4', 'utf8mb4_general_ci'),
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('ApiRateLimit', 'utf8mb4', 'utf8mb4_general_ci'),
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('Bans', 'utf8mb4', 'utf8mb4_general_ci'),
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('DependencyTypes', 'utf8mb4', 'utf8mb4_general_ci'),
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('Groups', 'utf8mb4', 'utf8mb4_general_ci'),
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('Licenses', 'utf8mb4', 'utf8mb4_general_ci'),
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('OfficialProviders', 'utf8mb4', 'utf8mb4_bin'),
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('PackageBases', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageBlacklist', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageComments', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageDepends', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageKeywords', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageRelations', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageRequests', 'utf8mb4', 'utf8mb4_general_ci'),
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('PackageSources', 'utf8mb4', 'utf8mb4_general_ci'),
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('Packages', 'utf8mb4', 'utf8mb4_general_ci'),
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('RelationTypes', 'utf8mb4', 'utf8mb4_general_ci'),
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('RequestTypes', 'utf8mb4', 'utf8mb4_general_ci'),
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('SSHPubKeys', 'utf8mb4', 'utf8mb4_bin'),
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('Sessions', 'utf8mb4', 'utf8mb4_bin'),
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('TU_VoteInfo', 'utf8mb4', 'utf8mb4_bin'),
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('Terms', 'utf8mb4', 'utf8mb4_general_ci'),
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('Users', 'utf8mb4', 'utf8mb4_general_ci')
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]
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# Indexes affected by charset/collate change
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# Map of Unique Indexes key = index_name, value = [table_name, column1, column2]
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indexes = {'ProviderNameProvides': ['OfficialProviders', 'Name', 'Provides']}
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# Source charset/collation, before this migration is run.
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src_charset = "utf8"
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src_collate = "utf8_general_ci"
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db_backend = aurweb.config.get("database", "backend")
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def rebuild_unique_indexes_with_str_cols():
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for idx_name in indexes:
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sql = f"""
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DROP INDEX IF EXISTS {idx_name}
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ON {indexes.get(idx_name)[0]}
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"""
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op.execute(sql)
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sql = f"""
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CREATE UNIQUE INDEX {idx_name}
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ON {indexes.get(idx_name)[0]}
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({indexes.get(idx_name)[1]}, {indexes.get(idx_name)[2]})
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"""
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op.execute(sql)
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def do_all(iterable, fn):
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for element in iterable:
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fn(element)
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def upgrade():
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def op_execute(table_meta):
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table, charset, collate = table_meta
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sql = f"""
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ALTER TABLE {table}
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CONVERT TO CHARACTER SET {charset}
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COLLATE {collate}
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"""
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op.execute(sql)
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do_all(tables, op_execute)
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rebuild_unique_indexes_with_str_cols()
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def downgrade():
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if db_backend == "sqlite":
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return None
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def op_execute(table_meta):
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table, charset, collate = table_meta
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sql = f"""
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ALTER TABLE {table}
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CONVERT TO CHARACTER SET {src_charset}
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COLLATE {src_collate}
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"""
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op.execute(sql)
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do_all(tables, op_execute)
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rebuild_unique_indexes_with_str_cols()
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