def _assert_migration_consistency(self, schema_text):
migration_text = f'''
CREATE MIGRATION m TO {{
{schema_text}
}};
'''
migration_ql = edgeql.parse_block(migration_text)
migration_cmd = s_ddl.cmd_from_ddl(
migration_ql[0],
schema=self.schema,
modaliases={None: 'default'},
)
migration_cmd = s_ddl.compile_migration(
migration_cmd,
self.std_schema,
self.schema,
)
context = s_delta.CommandContext()
schema, migration = migration_cmd.apply(self.schema, context)
ddl_plan = s_delta.DeltaRoot(canonical=True)
ddl_plan.update(migration.get_commands(schema))
baseline_schema, _ = ddl_plan.apply(schema, context)
ddl_text = s_ddl.ddl_text_from_delta(schema, migration)
try:
test_schema = self.run_ddl(schema, ddl_text)
except errors.EdgeDBError as e:
self.fail(markup.dumps(e))
diff = s_ddl.delta_schemas(baseline_schema, test_schema)
if list(diff.get_subcommands()):
self.fail(
f'unexpected difference in schema produced by\n'
f'COMMIT MIGRATION and DDL obtained from GET MIGRATION:\n'
f'{markup.dumps(diff)}\n'
f'DDL text was:\n{ddl_text}')
def _compile_and_apply_delta_command(self, ctx: CompileContext,
cmd) -> dbstate.BaseQuery:
current_tx = ctx.state.current_tx()
schema = current_tx.get_schema()
context = self._new_delta_context(ctx)
if current_tx.is_implicit():
if isinstance(cmd, s_deltas.CreateDelta):
command = 'CREATE MIGRATION'
elif isinstance(cmd, s_deltas.GetDelta):
command = 'GET MIGRATION'
else:
command = 'COMMIT MIGRATION'
raise errors.QueryError(
f'{command} must be executed in a transaction block')
if isinstance(cmd, s_deltas.CreateDelta):
delta = None
else:
delta = schema.get(cmd.classname)
with context(s_deltas.DeltaCommandContext(schema, cmd, delta)):
if isinstance(cmd, s_deltas.CommitDelta):
ddl_plan = s_delta.DeltaRoot(canonical=True)
ddl_plan.update(delta.get_commands(schema))
return self._compile_and_apply_ddl_command(ctx, ddl_plan)
elif isinstance(cmd, s_deltas.GetDelta):
delta_ql = s_ddl.ddl_text_from_delta(schema, delta)
query_ql = qlast.SelectQuery(result=qlast.StringConstant(
quote="'", value=ql_quote.escape_string(delta_ql)))
return self._compile_ql_query(ctx, query_ql)
elif isinstance(cmd, s_deltas.CreateDelta):
schema, _ = cmd.apply(schema, context)
current_tx.update_schema(schema)
# We must return *some* SQL; return a no-op command.
return dbstate.DDLQuery(sql=(b'SELECT NULL LIMIT 0;', ))
else:
raise errors.InternalServerError(
f'unexpected delta command: {cmd!r}') # pragma: no cover
