async def _make_stdlib(testmode: bool):
    schema = s_schema.Schema()

    current_block = None

    std_texts = []
    for modname in s_schema.STD_LIB + ('stdgraphql', ):
        std_texts.append(s_std.get_std_module_text(modname))

    if testmode:
        std_texts.append(s_std.get_std_module_text('_testmode'))

    ddl_text = '\n'.join(std_texts)

    for ddl_cmd in edgeql.parse_block(ddl_text):
        delta_command = s_ddl.delta_from_ddl(ddl_cmd,
                                             schema=schema,
                                             modaliases={None: 'std'},
                                             stdmode=True)

        if debug.flags.delta_plan_input:
            debug.header('Delta Plan Input')
            debug.dump(delta_command)

        # Do a dry-run on test_schema to canonicalize
        # the schema delta-commands.
        test_schema = schema

        context = sd.CommandContext()
        context.stdmode = True

        delta_command.apply(test_schema, context=context)

        # Apply and adapt delta, build native delta plan, which
        # will also update the schema.
        schema, plan = _process_delta(delta_command, schema)

        if isinstance(plan, (s_db.CreateDatabase, s_db.DropDatabase)):
            if (current_block is not None
                    and not isinstance(current_block, dbops.SQLBlock)):
                raise errors.QueryError(
                    'cannot mix DATABASE commands with regular DDL '
                    'commands in a single block')
            if current_block is None:
                current_block = dbops.SQLBlock()

        else:
            if (current_block is not None
                    and not isinstance(current_block, dbops.PLTopBlock)):
                raise errors.QueryError(
                    'cannot mix DATABASE commands with regular DDL '
                    'commands in a single block')
            if current_block is None:
                current_block = dbops.PLTopBlock()

        plan.generate(current_block)

    sql_text = current_block.to_string()

    return schema, sql_text
示例#2
0
文件: lang.py 项目: syyunn/edgedb
def _load_std_schema():
    global _std_schema
    if _std_schema is None:
        std_dirs_hash = devmode.hash_dirs(s_std.CACHE_SRC_DIRS)
        schema = None

        if devmode.is_in_dev_mode():
            schema = devmode.read_dev_mode_cache(
                std_dirs_hash, 'transient-stdschema.pickle')

        if schema is None:
            schema = s_schema.Schema()
            for modname in s_schema.STD_LIB + ('stdgraphql',):
                schema = s_std.load_std_module(schema, modname)

        if devmode.is_in_dev_mode():
            devmode.write_dev_mode_cache(
                schema, std_dirs_hash, 'transient-stdschema.pickle')

        _std_schema = schema

    return _std_schema
示例#3
0
async def _make_stdlib(
        testmode: bool) -> Tuple[s_schema.Schema, str, Set[uuid.UUID]]:
    schema = s_schema.Schema()
    schema, _ = s_mod.Module.create_in_schema(schema, name='__derived__')
    schema = s_pseudo.populate_types(schema)

    current_block = None

    std_texts = []
    for modname in s_schema.STD_LIB + ('stdgraphql', ):
        std_texts.append(s_std.get_std_module_text(modname))

    if testmode:
        std_texts.append(s_std.get_std_module_text('_testmode'))

    ddl_text = '\n'.join(std_texts)
    new_types: Set[uuid.UUID] = set()

    for ddl_cmd in edgeql.parse_block(ddl_text):
        delta_command = s_ddl.delta_from_ddl(ddl_cmd,
                                             modaliases={},
                                             schema=schema,
                                             stdmode=True)

        if debug.flags.delta_plan_input:
            debug.header('Delta Plan Input')
            debug.dump(delta_command)

        # Apply and adapt delta, build native delta plan, which
        # will also update the schema.
        schema, plan = _process_delta(delta_command, schema)

        if isinstance(plan, (s_db.CreateDatabase, s_db.DropDatabase)):
            if (current_block is not None
                    and not isinstance(current_block, dbops.SQLBlock)):
                raise errors.QueryError(
                    'cannot mix DATABASE commands with regular DDL '
                    'commands in a single block')
            if current_block is None:
                current_block = dbops.SQLBlock()

        else:
            new_types.update(plan.new_types)
            if (current_block is not None
                    and not isinstance(current_block, dbops.PLTopBlock)):
                raise errors.QueryError(
                    'cannot mix DATABASE commands with regular DDL '
                    'commands in a single block')
            if current_block is None:
                current_block = dbops.PLTopBlock()

        plan.generate(current_block)

    assert current_block is not None
    sql_text = current_block.to_string()

    mods = {
        mod.get_name(schema)
        for mod in schema.get_modules() if mod.get_builtin(schema)
    }
    if mods != s_schema.STD_MODULES:
        raise errors.SchemaError(
            f'modules {s_schema.STD_MODULES - mods} are not marked as builtin')

    return schema, sql_text, new_types
示例#4
0
async def _make_stdlib(testmode: bool, global_ids) -> StdlibBits:
    schema = s_schema.Schema()
    schema, _ = s_mod.Module.create_in_schema(schema, name='__derived__')

    current_block = dbops.PLTopBlock()

    std_texts = []
    for modname in s_schema.STD_LIB + ('stdgraphql', ):
        std_texts.append(s_std.get_std_module_text(modname))

    if testmode:
        std_texts.append(s_std.get_std_module_text('_testmode'))

    ddl_text = '\n'.join(std_texts)
    types: Set[uuid.UUID] = set()
    std_plans: List[sd.Command] = []

    for ddl_cmd in edgeql.parse_block(ddl_text):
        delta_command = s_ddl.delta_from_ddl(ddl_cmd,
                                             modaliases={},
                                             schema=schema,
                                             stdmode=True)

        if debug.flags.delta_plan_input:
            debug.header('Delta Plan Input')
            debug.dump(delta_command)

        # Apply and adapt delta, build native delta plan, which
        # will also update the schema.
        schema, plan = _process_delta(delta_command, schema)
        std_plans.append(delta_command)

        types.update(plan.new_types)
        plan.generate(current_block)

    stdglobals = '\n'.join([
        f'''CREATE SUPERUSER ROLE {edbdef.EDGEDB_SUPERUSER} {{
            SET id := <uuid>'{global_ids[edbdef.EDGEDB_SUPERUSER]}'
        }};''',
        f'''CREATE DATABASE {edbdef.EDGEDB_TEMPLATE_DB} {{
            SET id := <uuid>'{global_ids[edbdef.EDGEDB_TEMPLATE_DB]}'
        }};''',
        f'CREATE DATABASE {edbdef.EDGEDB_SUPERUSER_DB};',
    ])

    context = sd.CommandContext(stdmode=True)

    for ddl_cmd in edgeql.parse_block(stdglobals):
        delta_command = s_ddl.delta_from_ddl(ddl_cmd,
                                             modaliases={},
                                             schema=schema,
                                             stdmode=True)

        schema = delta_command.apply(schema, context)

    refldelta, classlayout, introparts = s_refl.generate_structure(schema)
    reflschema, reflplan = _process_delta(refldelta, schema)

    std_plans.append(refldelta)

    assert current_block is not None
    reflplan.generate(current_block)
    subblock = current_block.add_block()

    compiler = edbcompiler.new_compiler(
        std_schema=schema,
        reflection_schema=reflschema,
        schema_class_layout=classlayout,
        bootstrap_mode=True,
    )

    compilerctx = edbcompiler.new_compiler_context(reflschema)

    for std_plan in std_plans:
        compiler._compile_schema_storage_in_delta(
            ctx=compilerctx,
            delta=std_plan,
            block=subblock,
            is_internal_reflection=std_plan is refldelta,
            stdmode=True,
        )

    sqltext = current_block.to_string()

    compilerctx = edbcompiler.new_compiler_context(
        reflschema,
        schema_reflection_mode=True,
        output_format=edbcompiler.IoFormat.JSON_ELEMENTS,
    )

    # The introspection query bits are returned in chunks
    # because it's a large UNION and we currently generate SQL
    # that is much harder for Posgres to plan as opposed to a
    # straight flat UNION.
    sql_introparts = []

    for intropart in introparts:
        introtokens = tokenizer.tokenize(intropart.encode())
        units = compiler._compile(ctx=compilerctx, tokens=introtokens)
        assert len(units) == 1 and len(units[0].sql) == 1
        sql_intropart = units[0].sql[0].decode()
        sql_introparts.append(sql_intropart)

    introsql = ' UNION ALL '.join(sql_introparts)

    return StdlibBits(
        stdschema=schema,
        reflschema=reflschema,
        sqltext=sqltext,
        types=types,
        classlayout=classlayout,
        introquery=introsql,
    )