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rust-rocksdb/tests/test_checkpoint.rs

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// Copyright 2018 Eugene P.
//
// 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.
//
extern crate rocksdb;
use rocksdb::{checkpoint::Checkpoint, Options, DB};
use std::fs::remove_dir_all;
#[test]
pub fn test_single_checkpoint() {
const PATH_PREFIX: &str = "_rust_rocksdb_cp_single_";
// Create DB with some data
let db_path = format!("{}db1", PATH_PREFIX);
let _ = remove_dir_all(&db_path);
let mut opts = Options::default();
opts.create_if_missing(true);
let db = DB::open(&opts, &db_path).unwrap();
db.put(b"k1", b"v1").unwrap();
db.put(b"k2", b"v2").unwrap();
db.put(b"k3", b"v3").unwrap();
db.put(b"k4", b"v4").unwrap();
// Create checkpoint
let cp1 = Checkpoint::new(&db).unwrap();
let cp1_path = format!("{}cp1", PATH_PREFIX);
let _ = remove_dir_all(&cp1_path);
cp1.create_checkpoint(&cp1_path).unwrap();
// Verify checkpoint
let cp = DB::open_default(&cp1_path).unwrap();
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"v1");
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"v2");
assert_eq!(*cp.get(b"k3").unwrap().unwrap(), *b"v3");
assert_eq!(*cp.get(b"k4").unwrap().unwrap(), *b"v4");
let _ = remove_dir_all(&db_path);
let _ = remove_dir_all(&cp1_path);
}
#[test]
pub fn test_multi_checkpoints() {
const PATH_PREFIX: &str = "_rust_rocksdb_cp_multi_";
// Create DB with some data
let db_path = format!("{}db1", PATH_PREFIX);
let _ = remove_dir_all(&db_path);
let mut opts = Options::default();
opts.create_if_missing(true);
let db = DB::open(&opts, &db_path).unwrap();
db.put(b"k1", b"v1").unwrap();
db.put(b"k2", b"v2").unwrap();
db.put(b"k3", b"v3").unwrap();
db.put(b"k4", b"v4").unwrap();
// Create first checkpoint
let cp1 = Checkpoint::new(&db).unwrap();
let cp1_path = format!("{}cp1", PATH_PREFIX);
let _ = remove_dir_all(&cp1_path);
cp1.create_checkpoint(&cp1_path).unwrap();
// Verify checkpoint
let cp = DB::open_default(&cp1_path).unwrap();
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"v1");
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"v2");
assert_eq!(*cp.get(b"k3").unwrap().unwrap(), *b"v3");
assert_eq!(*cp.get(b"k4").unwrap().unwrap(), *b"v4");
let _ = remove_dir_all(&cp1_path);
// Change some existing keys
db.put(b"k1", b"modified").unwrap();
db.put(b"k2", b"changed").unwrap();
// Add some new keys
db.put(b"k5", b"v5").unwrap();
db.put(b"k6", b"v6").unwrap();
// Create another checkpoint
let cp2 = Checkpoint::new(&db).unwrap();
let cp2_path = format!("{}cp2", PATH_PREFIX);
let _ = remove_dir_all(&cp2_path);
cp2.create_checkpoint(&cp2_path).unwrap();
// Verify second checkpoint
let cp = DB::open_default(&cp2_path).unwrap();
assert_eq!(*cp.get(b"k1").unwrap().unwrap(), *b"modified");
assert_eq!(*cp.get(b"k2").unwrap().unwrap(), *b"changed");
assert_eq!(*cp.get(b"k5").unwrap().unwrap(), *b"v5");
assert_eq!(*cp.get(b"k6").unwrap().unwrap(), *b"v6");
let _ = remove_dir_all(&db_path);
let _ = remove_dir_all(&cp2_path);
}