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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,229 @@ | ||
| // Copyright 2023 Greptime Team | ||
| // | ||
| // 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 api::v1::region::{ | ||
| region_request, RegionRequest, RegionRequestHeader, TruncateRequest as PbTruncateRegionRequest, | ||
| }; | ||
| use async_trait::async_trait; | ||
| use common_error::ext::ErrorExt; | ||
| use common_error::status_code::StatusCode; | ||
| use common_procedure::error::{FromJsonSnafu, ToJsonSnafu}; | ||
| use common_procedure::{ | ||
| Context as ProcedureContext, Error as ProcedureError, LockKey, Procedure, | ||
| Result as ProcedureResult, Status, | ||
| }; | ||
| use common_telemetry::debug; | ||
| use futures::future::join_all; | ||
| use serde::{Deserialize, Serialize}; | ||
| use snafu::{ensure, ResultExt}; | ||
| use store_api::storage::RegionId; | ||
| use table::engine::TableReference; | ||
| use table::metadata::{RawTableInfo, TableId}; | ||
|
|
||
| use crate::ddl::utils::handle_operate_region_error; | ||
| use crate::ddl::DdlContext; | ||
| use crate::error::{self, Result, TableNotFoundSnafu}; | ||
| use crate::key::table_info::TableInfoValue; | ||
| use crate::key::table_name::TableNameKey; | ||
| use crate::rpc::ddl::TruncateTableTask; | ||
| use crate::rpc::router::{find_leader_regions, find_leaders, RegionRoute}; | ||
| use crate::table_name::TableName; | ||
|
|
||
| pub struct TruncateTableProcedure { | ||
| context: DdlContext, | ||
| data: TruncateTableData, | ||
| } | ||
|
|
||
| #[async_trait] | ||
| impl Procedure for TruncateTableProcedure { | ||
| fn type_name(&self) -> &str { | ||
| Self::TYPE_NAME | ||
| } | ||
|
|
||
| async fn execute(&mut self, _ctx: &ProcedureContext) -> ProcedureResult<Status> { | ||
| let error_handler = |e| { | ||
| if matches!(e, error::Error::RetryLater { .. }) { | ||
| ProcedureError::retry_later(e) | ||
| } else { | ||
| ProcedureError::external(e) | ||
| } | ||
| }; | ||
| match self.data.state { | ||
| TruncateTableState::Prepare => self.on_prepare().await, | ||
| TruncateTableState::DatanodeTruncateTable => self.on_datanode_truncate_table().await, | ||
| } | ||
| .map_err(error_handler) | ||
| } | ||
|
|
||
| fn dump(&self) -> ProcedureResult<String> { | ||
| serde_json::to_string(&self.data).context(ToJsonSnafu) | ||
| } | ||
|
|
||
| fn lock_key(&self) -> LockKey { | ||
| let table_ref = &self.data.table_ref(); | ||
| let key = common_catalog::format_full_table_name( | ||
| table_ref.catalog, | ||
| table_ref.schema, | ||
| table_ref.table, | ||
| ); | ||
|
|
||
| LockKey::single(key) | ||
| } | ||
| } | ||
|
|
||
| impl TruncateTableProcedure { | ||
| pub(crate) const TYPE_NAME: &'static str = "metasrv-procedure::TruncateTableProcedure"; | ||
|
|
||
| pub(crate) fn new( | ||
| cluster_id: u64, | ||
| task: TruncateTableTask, | ||
| table_info_value: TableInfoValue, | ||
| region_routes: Vec<RegionRoute>, | ||
| context: DdlContext, | ||
| ) -> Self { | ||
| Self { | ||
| context, | ||
| data: TruncateTableData::new(cluster_id, task, table_info_value, region_routes), | ||
| } | ||
| } | ||
|
|
||
| pub(crate) fn from_json(json: &str, context: DdlContext) -> ProcedureResult<Self> { | ||
| let data = serde_json::from_str(json).context(FromJsonSnafu)?; | ||
| Ok(Self { context, data }) | ||
| } | ||
|
|
||
| // Checks whether the table exists. | ||
| async fn on_prepare(&mut self) -> Result<Status> { | ||
| let table_ref = &self.data.table_ref(); | ||
|
|
||
| let manager = &self.context.table_metadata_manager; | ||
|
|
||
| let exist = manager | ||
| .table_name_manager() | ||
| .exists(TableNameKey::new( | ||
| table_ref.catalog, | ||
| table_ref.schema, | ||
| table_ref.table, | ||
| )) | ||
| .await?; | ||
|
|
||
| ensure!( | ||
| exist, | ||
| TableNotFoundSnafu { | ||
| table_name: table_ref.to_string() | ||
| } | ||
| ); | ||
|
|
||
| self.data.state = TruncateTableState::DatanodeTruncateTable; | ||
|
|
||
| Ok(Status::executing(true)) | ||
| } | ||
|
|
||
| async fn on_datanode_truncate_table(&mut self) -> Result<Status> { | ||
| let table_id = self.data.table_id(); | ||
|
|
||
| let region_routes = &self.data.region_routes; | ||
| let leaders = find_leaders(region_routes); | ||
| let mut truncate_region_tasks = Vec::with_capacity(leaders.len()); | ||
|
|
||
| for datanode in leaders { | ||
| let clients = self.context.datanode_manager.clone(); | ||
| let regions = find_leader_regions(region_routes, &datanode); | ||
| let region_ids = regions | ||
| .iter() | ||
| .map(|region_number| RegionId::new(table_id, *region_number)) | ||
| .collect::<Vec<_>>(); | ||
|
|
||
| truncate_region_tasks.push(async move { | ||
| for region_id in region_ids { | ||
| debug!("Truncating region {region_id} on Datanode {datanode:?}"); | ||
|
|
||
| let request = RegionRequest { | ||
| header: Some(RegionRequestHeader { | ||
| trace_id: 0, | ||
| span_id: 0, | ||
| }), | ||
| body: Some(region_request::Body::Truncate(PbTruncateRegionRequest { | ||
| region_id: region_id.as_u64(), | ||
| })), | ||
| }; | ||
|
|
||
| if let Err(err) = clients.datanode(&datanode).await.handle(request).await { | ||
| if err.status_code() != StatusCode::RegionNotFound { | ||
| return Err(handle_operate_region_error(datanode)(err)); | ||
| } | ||
| } | ||
| } | ||
| Ok(()) | ||
| }); | ||
| } | ||
|
|
||
| join_all(truncate_region_tasks) | ||
| .await | ||
| .into_iter() | ||
| .collect::<Result<Vec<_>>>()?; | ||
|
|
||
| Ok(Status::Done) | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Serialize, Deserialize)] | ||
| pub struct TruncateTableData { | ||
| state: TruncateTableState, | ||
| cluster_id: u64, | ||
| task: TruncateTableTask, | ||
| table_info_value: TableInfoValue, | ||
| region_routes: Vec<RegionRoute>, | ||
| } | ||
|
|
||
| impl TruncateTableData { | ||
| pub fn new( | ||
| cluster_id: u64, | ||
| task: TruncateTableTask, | ||
| table_info_value: TableInfoValue, | ||
| region_routes: Vec<RegionRoute>, | ||
| ) -> Self { | ||
| Self { | ||
| state: TruncateTableState::DatanodeTruncateTable, | ||
| cluster_id, | ||
| task, | ||
| table_info_value, | ||
| region_routes, | ||
| } | ||
| } | ||
|
|
||
| pub fn table_ref(&self) -> TableReference { | ||
| self.task.table_ref() | ||
| } | ||
|
|
||
| pub fn table_name(&self) -> TableName { | ||
| self.task.table_name() | ||
| } | ||
|
|
||
| fn table_info(&self) -> &RawTableInfo { | ||
| &self.table_info_value.table_info | ||
| } | ||
|
|
||
| fn table_id(&self) -> TableId { | ||
| self.table_info().ident.table_id | ||
| } | ||
| } | ||
|
|
||
| #[derive(Debug, Serialize, Deserialize)] | ||
| enum TruncateTableState { | ||
| /// Prepares to truncate the table | ||
| Prepare, | ||
| /// Datanode truncates the table | ||
| DatanodeTruncateTable, | ||
| } |
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