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|
package raft
import (
"bytes"
"io"
"io/ioutil"
"os"
"reflect"
"runtime"
"testing"
)
func FileSnapTest(t *testing.T) (string, *FileSnapshotStore) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
snap, err := NewFileSnapshotStoreWithLogger(dir, 3, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
return dir, snap
}
func TestFileSnapshotStoreImpl(t *testing.T) {
var impl interface{} = &FileSnapshotStore{}
if _, ok := impl.(SnapshotStore); !ok {
t.Fatalf("FileSnapshotStore not a SnapshotStore")
}
}
func TestFileSnapshotSinkImpl(t *testing.T) {
var impl interface{} = &FileSnapshotSink{}
if _, ok := impl.(SnapshotSink); !ok {
t.Fatalf("FileSnapshotSink not a SnapshotSink")
}
}
func TestFileSS_CreateSnapshotMissingParentDir(t *testing.T) {
parent, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(parent)
dir, err := ioutil.TempDir(parent, "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
snap, err := NewFileSnapshotStoreWithLogger(dir, 3, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
os.RemoveAll(parent)
_, trans := NewInmemTransport(NewInmemAddr())
_, err = snap.Create(SnapshotVersionMax, 10, 3, Configuration{}, 0, trans)
if err != nil {
t.Fatalf("should not fail when using non existing parent")
}
}
func TestFileSS_CreateSnapshot(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
snap, err := NewFileSnapshotStoreWithLogger(dir, 3, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
// Check no snapshots
snaps, err := snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 0 {
t.Fatalf("did not expect any snapshots: %v", snaps)
}
// Create a new sink
var configuration Configuration
configuration.Servers = append(configuration.Servers, Server{
Suffrage: Voter,
ID: ServerID("my id"),
Address: ServerAddress("over here"),
})
_, trans := NewInmemTransport(NewInmemAddr())
sink, err := snap.Create(SnapshotVersionMax, 10, 3, configuration, 2, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
// The sink is not done, should not be in a list!
snaps, err = snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 0 {
t.Fatalf("did not expect any snapshots: %v", snaps)
}
// Write to the sink
_, err = sink.Write([]byte("first\n"))
if err != nil {
t.Fatalf("err: %v", err)
}
_, err = sink.Write([]byte("second\n"))
if err != nil {
t.Fatalf("err: %v", err)
}
// Done!
err = sink.Close()
if err != nil {
t.Fatalf("err: %v", err)
}
// Should have a snapshot!
snaps, err = snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 1 {
t.Fatalf("expect a snapshots: %v", snaps)
}
// Check the latest
latest := snaps[0]
if latest.Index != 10 {
t.Fatalf("bad snapshot: %v", *latest)
}
if latest.Term != 3 {
t.Fatalf("bad snapshot: %v", *latest)
}
if !reflect.DeepEqual(latest.Configuration, configuration) {
t.Fatalf("bad snapshot: %v", *latest)
}
if latest.ConfigurationIndex != 2 {
t.Fatalf("bad snapshot: %v", *latest)
}
if latest.Size != 13 {
t.Fatalf("bad snapshot: %v", *latest)
}
// Read the snapshot
_, r, err := snap.Open(latest.ID)
if err != nil {
t.Fatalf("err: %v", err)
}
// Read out everything
var buf bytes.Buffer
if _, err := io.Copy(&buf, r); err != nil {
t.Fatalf("err: %v", err)
}
if err := r.Close(); err != nil {
t.Fatalf("err: %v", err)
}
// Ensure a match
if bytes.Compare(buf.Bytes(), []byte("first\nsecond\n")) != 0 {
t.Fatalf("content mismatch")
}
}
func TestFileSS_CancelSnapshot(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
snap, err := NewFileSnapshotStoreWithLogger(dir, 3, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
// Create a new sink
_, trans := NewInmemTransport(NewInmemAddr())
sink, err := snap.Create(SnapshotVersionMax, 10, 3, Configuration{}, 0, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
// Cancel the snapshot! Should delete
err = sink.Cancel()
if err != nil {
t.Fatalf("err: %v", err)
}
// The sink is canceled, should not be in a list!
snaps, err := snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 0 {
t.Fatalf("did not expect any snapshots: %v", snaps)
}
}
func TestFileSS_Retention(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
snap, err := NewFileSnapshotStoreWithLogger(dir, 2, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
// Create a few snapshots
_, trans := NewInmemTransport(NewInmemAddr())
for i := 10; i < 15; i++ {
sink, err := snap.Create(SnapshotVersionMax, uint64(i), 3, Configuration{}, 0, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
err = sink.Close()
if err != nil {
t.Fatalf("err: %v", err)
}
}
// Should only have 2 listed!
snaps, err := snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 2 {
t.Fatalf("expect 2 snapshots: %v", snaps)
}
// Check they are the latest
if snaps[0].Index != 14 {
t.Fatalf("bad snap: %#v", *snaps[0])
}
if snaps[1].Index != 13 {
t.Fatalf("bad snap: %#v", *snaps[1])
}
}
func TestFileSS_BadPerm(t *testing.T) {
if runtime.GOOS == "windows" {
t.Skip("skipping file permission test on windows")
}
// Create a temp dir
dir1, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %s", err)
}
defer os.RemoveAll(dir1)
// Create a sub dir and remove all permissions
dir2, err := ioutil.TempDir(dir1, "badperm")
if err != nil {
t.Fatalf("err: %s", err)
}
if err := os.Chmod(dir2, 000); err != nil {
t.Fatalf("err: %s", err)
}
defer os.Chmod(dir2, 777) // Set perms back for delete
// Should fail
if _, err := NewFileSnapshotStore(dir2, 3, nil); err == nil {
t.Fatalf("should fail to use dir with bad perms")
}
}
func TestFileSS_MissingParentDir(t *testing.T) {
parent, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(parent)
dir, err := ioutil.TempDir(parent, "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
os.RemoveAll(parent)
_, err = NewFileSnapshotStore(dir, 3, nil)
if err != nil {
t.Fatalf("should not fail when using non existing parent")
}
}
func TestFileSS_Ordering(t *testing.T) {
// Create a test dir
dir, err := ioutil.TempDir("", "raft")
if err != nil {
t.Fatalf("err: %v ", err)
}
defer os.RemoveAll(dir)
snap, err := NewFileSnapshotStoreWithLogger(dir, 3, newTestLogger(t))
if err != nil {
t.Fatalf("err: %v", err)
}
// Create a new sink
_, trans := NewInmemTransport(NewInmemAddr())
sink, err := snap.Create(SnapshotVersionMax, 130350, 5, Configuration{}, 0, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
err = sink.Close()
if err != nil {
t.Fatalf("err: %v", err)
}
sink, err = snap.Create(SnapshotVersionMax, 204917, 36, Configuration{}, 0, trans)
if err != nil {
t.Fatalf("err: %v", err)
}
err = sink.Close()
if err != nil {
t.Fatalf("err: %v", err)
}
// Should only have 2 listed!
snaps, err := snap.List()
if err != nil {
t.Fatalf("err: %v", err)
}
if len(snaps) != 2 {
t.Fatalf("expect 2 snapshots: %v", snaps)
}
// Check they are ordered
if snaps[0].Term != 36 {
t.Fatalf("bad snap: %#v", *snaps[0])
}
if snaps[1].Term != 5 {
t.Fatalf("bad snap: %#v", *snaps[1])
}
}
|
