risingwave_frontend/catalog/system_catalog/rw_catalog/
rw_views.rs

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// Copyright 2024 RisingWave Labs
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

use risingwave_common::types::Fields;
use risingwave_frontend_macro::system_catalog;
use risingwave_pb::user::grant_privilege::Object;

use crate::catalog::system_catalog::{get_acl_items, SysCatalogReaderImpl};
use crate::error::Result;

#[derive(Fields)]
struct RwView {
    #[primary_key]
    id: i32,
    name: String,
    schema_id: i32,
    owner: i32,
    definition: String,
    acl: Vec<String>,
}

#[system_catalog(table, "rw_catalog.rw_views")]
fn read_rw_view_info(reader: &SysCatalogReaderImpl) -> Result<Vec<RwView>> {
    let catalog_reader = reader.catalog_reader.read_guard();
    let schemas = catalog_reader.iter_schemas(&reader.auth_context.database)?;
    let user_reader = reader.user_info_reader.read_guard();
    let users = user_reader.get_all_users();
    let username_map = user_reader.get_user_name_map();

    Ok(schemas
        .flat_map(|schema| {
            schema.iter_view().map(|view| RwView {
                id: view.id as i32,
                name: view.name().to_string(),
                schema_id: schema.id() as i32,
                owner: view.owner as i32,
                definition: view.create_sql(schema.name()),
                acl: get_acl_items(&Object::ViewId(view.id), false, &users, username_map),
            })
        })
        .collect())
}