risingwave_frontend/expr/function_impl/
rw_recovery_status.rs

1// Copyright 2025 RisingWave Labs
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15use std::fmt::Write;
16use std::sync::Arc;
17
18use risingwave_expr::{ExprError, Result, capture_context, function};
19use risingwave_pb::meta::RecoveryStatus;
20
21use super::context::META_CLIENT;
22use crate::meta_client::FrontendMetaClient;
23
24#[function("rw_recovery_status() -> varchar", volatile)]
25async fn rw_recovery_status(writer: &mut impl Write) -> Result<()> {
26    writer
27        .write_str(
28            rw_recovery_status_impl_captured()
29                .await?
30                .as_str_name()
31                .strip_prefix("STATUS_")
32                .unwrap(),
33        )
34        .unwrap();
35    Ok(())
36}
37
38#[function("pg_is_in_recovery() -> boolean", volatile)]
39async fn pg_is_in_recovery() -> Result<bool> {
40    let status = rw_recovery_status_impl_captured().await?;
41    Ok(status != RecoveryStatus::StatusRunning)
42}
43
44#[capture_context(META_CLIENT)]
45async fn rw_recovery_status_impl(
46    meta_client: &Arc<dyn FrontendMetaClient>,
47) -> Result<RecoveryStatus> {
48    meta_client
49        .get_cluster_recovery_status()
50        .await
51        .map_err(|e| ExprError::Internal(e.into()))
52}
risingwave_frontend/expr/function_impl/rw_recovery_status.rs

risingwave_frontend/expr/function_impl/
rw_recovery_status.rs
