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c6a530f24f
Prep for python 3.12 Reformat files with latest pre-commit tools Signed-off-by: moson <moson@archlinux.org>
105 lines
3 KiB
Python
105 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_general_ci"),
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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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