add manifest

.github/workflows/metric-engine-ci.yml

@@ -28,7 +28,6 @@ on:
       - 'horaedb/**'
   pull_request:
     paths:
-      - 'src/**'
       - 'horaedb/**'
 
 # Common environment variables
@@ -45,7 +44,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 60
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           submodules: true
       - run: |
@@ -63,3 +62,7 @@ jobs:
         working-directory: horaedb
         run: |
           make fmt sort clippy
+      - name: Check lock
+        working-directory: horaedb
+        run: |
+          git diff --exit-code

horaedb/metric_engine/src/lib.rs

@@ -18,6 +18,7 @@
 //! Storage Engine for metrics.
 
 pub mod error;
+mod manifest;
 mod sst;
 pub mod storage;
 pub mod types;

horaedb/metric_engine/src/manifest.rs

@@ -0,0 +1,25 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you 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.
+
+pub struct Manifest {}
+
+impl Manifest {
+    pub fn new(id: u64) -> Self {
+        // Recover the manifest using the id from storage.
+        Self {}
+    }
+}

horaedb/metric_engine/src/storage.rs

@@ -19,6 +19,7 @@ use arrow::{array::RecordBatch, datatypes::Schema};
 use async_trait::async_trait;
 
 use crate::{
+    manifest::Manifest,
     sst::SSTable,
     types::{ObjectStoreRef, Predicate, TimeRange},
     Result,
@@ -46,6 +47,7 @@ pub struct CloudObjectStorage {
     id: u64,
     store: ObjectStoreRef,
     sstables: Vec<SSTable>,
+    manifest: Manifest,
 }
 
 impl CloudObjectStorage {
@@ -55,6 +57,7 @@ impl CloudObjectStorage {
             id,
             store,
             sstables: Vec::new(),
+            manifest: Manifest::new(id),
         }
     }
 }