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refactor(meta): adapt metadata backup to metadata model V2
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105 changes: 105 additions & 0 deletions
105
src/meta/src/backup_restore/meta_snapshot_builder_v2.rs
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,105 @@ | ||
| // Copyright 2023 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 std::collections::BTreeMap; | ||
| use std::future::Future; | ||
|
|
||
| use either::Either; | ||
| use risingwave_backup::error::{BackupError, BackupResult}; | ||
| use risingwave_backup::meta_snapshot_v2::{MetadataV2, MetaSnapshotV2}; | ||
| use risingwave_backup::MetaSnapshotId; | ||
| use risingwave_hummock_sdk::compaction_group::hummock_version_ext::HummockVersionUpdateExt; | ||
| use risingwave_pb::hummock::{HummockVersion, HummockVersionDelta as PbHummockVersionDelta}; | ||
| use sea_orm::{EntityTrait, QueryOrder, TransactionTrait}; | ||
|
|
||
| use crate::controller::SqlMetaStore; | ||
| use crate::model_v2; | ||
| use crate::model_v2::ext::*; | ||
| use crate::storage::MetaStoreError; | ||
|
|
||
| const VERSION: u32 = 2; | ||
|
|
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| pub struct MetaSnapshotV2Builder { | ||
| snapshot: MetaSnapshotV2, | ||
| meta_store: SqlMetaStore, | ||
| } | ||
|
|
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| impl MetaSnapshotV2Builder { | ||
| pub fn new(meta_store: SqlMetaStore) -> Self { | ||
| Self { | ||
| snapshot: MetaSnapshotV2::default(), | ||
| meta_store, | ||
| } | ||
| } | ||
|
|
||
| pub async fn build<D: Future<Output = HummockVersion>>( | ||
| &mut self, | ||
| id: MetaSnapshotId, | ||
| hummock_version_builder: D, | ||
| ) -> BackupResult<()> { | ||
| self.snapshot.format_version = VERSION; | ||
| self.snapshot.id = id; | ||
| // Get `hummock_version` before `meta_store_snapshot`. | ||
| // We have ensure the required delta logs for replay is available, see | ||
| // `HummockManager::delete_version_deltas`. | ||
| let hummock_version = hummock_version_builder.await; | ||
| let txn = self | ||
| .meta_store | ||
| .conn | ||
| .begin_with_config( | ||
| Some(sea_orm::IsolationLevel::Serializable), | ||
| Some(sea_orm::AccessMode::ReadOnly), | ||
| ) | ||
| .await | ||
| .map_err(|e| BackupError::MetaStorage(e.into()))?; | ||
| let version_deltas: Vec<model_v2::hummock_version_delta::Model> = | ||
| model_v2::prelude::HummockVersionDelta::find() | ||
| .order_by_asc(model_v2::hummock_version_delta::Column::Id) | ||
| .all(&txn) | ||
| .await | ||
| .map_err(|e| BackupError::MetaStorage(e.into()))?; | ||
| let hummock_version = { | ||
| let mut redo_state = hummock_version; | ||
| let mut max_log_id = None; | ||
| for version_delta in version_deltas.into_iter().map(PbHummockVersionDelta::from) { | ||
| if version_delta.prev_id == redo_state.id { | ||
| redo_state.apply_version_delta(&version_delta); | ||
| } | ||
| max_log_id = Some(version_delta.id); | ||
| } | ||
| if let Some(max_log_id) = max_log_id { | ||
| if max_log_id != redo_state.id { | ||
| return Err(BackupError::Other(anyhow::anyhow!(format!( | ||
| "inconsistent hummock version: expected {}, actual {}", | ||
| max_log_id, redo_state.id | ||
| )))); | ||
| } | ||
| } | ||
| redo_state | ||
| }; | ||
| todo!("other"); | ||
| txn.commit() | ||
| .await | ||
| .map_err(|e| BackupError::MetaStorage(e.into()))?; | ||
| // self.snapshot.metadata = MetadataV2 { | ||
| // | ||
| // }; | ||
| Ok(()) | ||
| } | ||
|
|
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| pub fn finish(self) -> BackupResult<MetaSnapshotV2> { | ||
| // Any sanity check goes here. | ||
| Ok(self.snapshot) | ||
| } | ||
| } |
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