164 lines
3.6 KiB
Go
164 lines
3.6 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package backend
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import (
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"fmt"
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"io/ioutil"
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"os"
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"testing"
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"time"
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"github.com/coreos/etcd/Godeps/_workspace/src/github.com/boltdb/bolt"
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)
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func TestBackendClose(t *testing.T) {
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b, tmpPath := NewTmpBackend(time.Hour, 10000)
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defer os.Remove(tmpPath)
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// check close could work
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done := make(chan struct{})
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go func() {
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err := b.Close()
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if err != nil {
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t.Errorf("close error = %v, want nil", err)
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}
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done <- struct{}{}
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}()
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select {
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case <-done:
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case <-time.After(time.Second):
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t.Errorf("failed to close database in 1s")
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}
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}
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func TestBackendSnapshot(t *testing.T) {
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b, tmpPath := NewTmpBackend(time.Hour, 10000)
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defer cleanup(b, tmpPath)
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tx := b.BatchTx()
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tx.Lock()
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tx.UnsafeCreateBucket([]byte("test"))
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tx.UnsafePut([]byte("test"), []byte("foo"), []byte("bar"))
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tx.Unlock()
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b.ForceCommit()
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// write snapshot to a new file
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f, err := ioutil.TempFile(os.TempDir(), "etcd_backend_test")
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if err != nil {
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t.Fatal(err)
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}
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snap := b.Snapshot()
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defer snap.Close()
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if _, err := snap.WriteTo(f); err != nil {
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t.Fatal(err)
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}
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f.Close()
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// bootstrap new backend from the snapshot
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nb := New(f.Name(), time.Hour, 10000)
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defer cleanup(nb, f.Name())
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newTx := b.BatchTx()
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newTx.Lock()
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ks, _ := newTx.UnsafeRange([]byte("test"), []byte("foo"), []byte("goo"), 0)
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if len(ks) != 1 {
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t.Errorf("len(kvs) = %d, want 1", len(ks))
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}
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newTx.Unlock()
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}
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func TestBackendBatchIntervalCommit(t *testing.T) {
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// start backend with super short batch interval so
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// we do not need to wait long before commit to happen.
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b, tmpPath := NewTmpBackend(time.Nanosecond, 10000)
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defer cleanup(b, tmpPath)
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pc := b.Commits()
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tx := b.BatchTx()
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tx.Lock()
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tx.UnsafeCreateBucket([]byte("test"))
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tx.UnsafePut([]byte("test"), []byte("foo"), []byte("bar"))
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tx.Unlock()
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for i := 0; i < 10; i++ {
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if b.Commits() >= pc+1 {
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break
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}
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time.Sleep(time.Duration(i*100) * time.Millisecond)
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}
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// check whether put happens via db view
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b.db.View(func(tx *bolt.Tx) error {
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bucket := tx.Bucket([]byte("test"))
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if bucket == nil {
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t.Errorf("bucket test does not exit")
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return nil
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}
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v := bucket.Get([]byte("foo"))
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if v == nil {
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t.Errorf("foo key failed to written in backend")
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}
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return nil
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})
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}
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func TestBackendDefrag(t *testing.T) {
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b, tmpPath := NewDefaultTmpBackend()
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defer cleanup(b, tmpPath)
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tx := b.BatchTx()
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tx.Lock()
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tx.UnsafeCreateBucket([]byte("test"))
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for i := 0; i < defragLimit+100; i++ {
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tx.UnsafePut([]byte("test"), []byte(fmt.Sprintf("foo_%d", i)), []byte("bar"))
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}
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tx.Unlock()
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b.ForceCommit()
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// shrink and check hash
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oh, err := b.Hash()
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if err != nil {
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t.Fatal(err)
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}
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err = b.Defrag()
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if err != nil {
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t.Fatal(err)
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}
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nh, err := b.Hash()
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if err != nil {
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t.Fatal(err)
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}
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if oh != nh {
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t.Errorf("hash = %v, want %v", nh, oh)
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}
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// try put more keys after shrink.
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tx = b.BatchTx()
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tx.Lock()
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tx.UnsafeCreateBucket([]byte("test"))
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tx.UnsafePut([]byte("test"), []byte("more"), []byte("bar"))
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tx.Unlock()
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b.ForceCommit()
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}
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func cleanup(b Backend, path string) {
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b.Close()
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os.Remove(path)
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}
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