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aec61e4 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 | """Copy-only Change cutover from the legacy backend namespace."""
from __future__ import annotations
import sqlite3
from collections.abc import Callable
from contextlib import closing
from pathlib import Path
from websitebench.site_backend.copy_cutover import (
CopyCutoverError,
publish_transformed_sqlite_copy,
)
LEGACY_TABLES = {
"clawbench_site_binding": "websitebench_site_binding",
"clawbench_backend_migrations": "websitebench_backend_migrations",
"clawbench_mail_jobs": "websitebench_mail_jobs",
"clawbench_payment_flows": "websitebench_payment_flows",
"clawbench_payment_attempts": "websitebench_payment_attempts",
"clawbench_payment_events": "websitebench_payment_events",
}
LEGACY_FILENAME = "change.sqlite3"
CANONICAL_FILENAME = "websitebench-change.sqlite3"
BACKUP_SUFFIX = ".clawbench-legacy"
MIGRATION_ID = "namespace-copy-v1:clawbench-to-websitebench"
class NamespaceMigrationError(CopyCutoverError):
"""Raised when a legacy database cannot be migrated unambiguously."""
def _tables(connection: sqlite3.Connection) -> set[str]:
return {
str(row[0])
for row in connection.execute(
"SELECT name FROM sqlite_master WHERE type='table'"
)
}
def _legacy_binding_connection(connection: sqlite3.Connection) -> str | None:
try:
if "clawbench_site_binding" not in _tables(connection):
return None
rows = connection.execute(
"SELECT singleton,site_id FROM clawbench_site_binding"
).fetchall()
except sqlite3.DatabaseError as exc:
raise NamespaceMigrationError(
"legacy site-backend database is not valid SQLite"
) from exc
if len(rows) != 1 or int(rows[0][0]) != 1:
raise NamespaceMigrationError("legacy site binding is missing or corrupt")
return str(rows[0][1])
def legacy_binding(database: Path) -> str | None:
"""Read the legacy site binding without changing database bytes."""
if not database.is_file() or database.is_symlink():
return None
source_uri = database.resolve().as_uri() + "?mode=ro"
with closing(sqlite3.connect(source_uri, uri=True)) as connection:
return _legacy_binding_connection(connection)
def migrate_legacy_namespace_copy(
source: Path,
canonical: Path,
*,
expected_site_id: str,
publication_hook: Callable[[], None] | None = None,
) -> bool:
"""Publish a canonical copy and retain the legacy source at its path."""
source = Path(source)
canonical = Path(canonical)
if not source.exists():
return False
def validate_source(connection: sqlite3.Connection) -> None:
bound_site = _legacy_binding_connection(connection)
if bound_site is None:
raise NamespaceMigrationError("legacy source has no ClawBench site binding")
if bound_site != expected_site_id:
raise NamespaceMigrationError(
f"legacy database belongs to site {bound_site!r}, "
f"not {expected_site_id!r}"
)
try:
publish_transformed_sqlite_copy(
source,
canonical,
expected_source_name=LEGACY_FILENAME,
expected_canonical_name=CANONICAL_FILENAME,
transform=lambda path: _migrate_copy(
path, expected_site_id=expected_site_id
),
validate_source=validate_source,
validate_canonical=lambda path: _validate_canonical(
path, expected_site_id=expected_site_id
),
reserved_paths=(source.with_name(source.name + BACKUP_SUFFIX),),
publication_hook=publication_hook,
)
except CopyCutoverError as exc:
if isinstance(exc, NamespaceMigrationError):
raise
raise NamespaceMigrationError(str(exc)) from exc
return True
def _validate_canonical(database: Path, *, expected_site_id: str) -> None:
try:
with closing(sqlite3.connect(database)) as connection:
tables = _tables(connection)
rows = connection.execute(
"SELECT singleton,site_id FROM websitebench_site_binding"
).fetchall()
integrity = connection.execute("PRAGMA integrity_check").fetchall()
foreign_keys = connection.execute("PRAGMA foreign_key_check").fetchall()
except sqlite3.DatabaseError as exc:
raise NamespaceMigrationError("canonical copy is not valid SQLite") from exc
if (
rows != [(1, expected_site_id)]
or integrity != [("ok",)]
or foreign_keys
or set(LEGACY_TABLES) & tables
or set(LEGACY_TABLES.values()) - tables
):
raise NamespaceMigrationError("canonical copy failed integrity validation")
def _migrate_copy(database: Path, *, expected_site_id: str) -> None:
with closing(sqlite3.connect(database, isolation_level=None)) as connection:
connection.execute("PRAGMA foreign_keys=ON")
connection.execute("PRAGMA busy_timeout=30000")
tables = _tables(connection)
if set(LEGACY_TABLES.values()) & tables:
raise NamespaceMigrationError(
"database contains mixed WebsiteBench and ClawBench backend tables"
)
missing = set(LEGACY_TABLES) - tables
if missing:
raise NamespaceMigrationError(
"legacy site-backend schema is incomplete: "
+ ", ".join(sorted(missing))
)
connection.execute("BEGIN IMMEDIATE")
try:
for name in (
"clawbench_payment_events_no_update",
"clawbench_payment_events_no_delete",
):
connection.execute(f'DROP TRIGGER IF EXISTS "{name}"')
for name in (
"clawbench_mail_jobs_status_idx",
"clawbench_payment_one_active_approval",
):
connection.execute(f'DROP INDEX IF EXISTS "{name}"')
for legacy, canonical in LEGACY_TABLES.items():
connection.execute(f'ALTER TABLE "{legacy}" RENAME TO "{canonical}"')
connection.execute(
"CREATE INDEX websitebench_mail_jobs_status_idx "
"ON websitebench_mail_jobs(site_id,status,created_at)"
)
connection.execute(
"CREATE UNIQUE INDEX websitebench_payment_one_active_approval "
"ON websitebench_payment_attempts(site_id,flow_id) "
"WHERE status='APPROVED'"
)
connection.execute(
"""
CREATE TRIGGER websitebench_payment_events_no_update
BEFORE UPDATE ON websitebench_payment_events
BEGIN
SELECT RAISE(ABORT, 'payment events are immutable');
END
"""
)
connection.execute(
"""
CREATE TRIGGER websitebench_payment_events_no_delete
BEFORE DELETE ON websitebench_payment_events
BEGIN
SELECT RAISE(ABORT, 'payment events are immutable');
END
"""
)
connection.execute(
"INSERT OR IGNORE INTO websitebench_backend_migrations"
"(migration_id,applied_at) VALUES (?,datetime('now'))",
(MIGRATION_ID,),
)
if "local_auth_sessions" in _tables(connection):
connection.execute(
"UPDATE local_auth_sessions "
"SET revoked_at=COALESCE("
"revoked_at, CAST(strftime('%s','now') AS INTEGER))"
)
connection.execute("COMMIT")
except BaseException:
if connection.in_transaction:
connection.execute("ROLLBACK")
raise
|