// Mount makes the contents of the volume visible at the given
// mountpoint. If Mount returns with a nil error, the mount has
// occurred.
func (app *App) Mount(volumeName string, mountpoint string) (*MountInfo, error) {
// TODO obey `bazil -debug server run`
var vol *fs.Volume
var volumeID *fs.VolumeID
var ready = make(chan error, 1)
app.mounts.Lock()
err := app.DB.View(func(tx *bolt.Tx) error {
bucket := tx.Bucket([]byte(tokens.BucketVolName))
val := bucket.Get([]byte(volumeName))
if val == nil {
return errors.New("volume not found")
}
var volConf wire.VolumeConfig
if err := proto.Unmarshal(val, &volConf); err != nil {
return err
}
var err error
volumeID, err = fs.NewVolumeID(volConf.VolumeID)
if err != nil {
return err
}
if _, ok := app.mounts.open[*volumeID]; ok {
return errors.New("volume already mounted")
}
kvstore, err := app.openKV(&volConf.Storage)
if err != nil {
return err
}
chunkStore := kvchunks.New(kvstore)
vol, err = fs.Open(app.DB, chunkStore, volumeID)
if err != nil {
return err
}
mnt := &mountState{
unmounted: make(chan struct{}),
}
go func() {
defer close(mnt.unmounted)
ready <- app.serveMount(vol, volumeID, mountpoint)
}()
app.mounts.open[*volumeID] = mnt
return nil
})
app.mounts.Unlock()
if err != nil {
return nil, err
}
err = <-ready
if err != nil {
return nil, err
}
info := &MountInfo{
VolumeID: *volumeID,
}
return info, nil
}
func (c *casCommand) Setup() (ok bool) {
path := filepath.Join(cli.Bazil.Config.DataDir.String(), c.Config.Path)
kvstore, err := kvfiles.Open(path)
if err != nil {
log.Printf("cannot open CAS: %v", err)
return false
}
c.State.Store = kvchunks.New(kvstore)
return true
}
func TestWrongType(t *testing.T) {
remote := &kvmock.InMemory{}
secret := &[32]byte{
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
}
converg := untrusted.New(remote, secret)
store := kvchunks.New(converg)
phony := &chunks.Chunk{
Type: "evilchunk",
Level: 3,
Buf: []byte(GREETING),
}
_, err := store.Add(phony)
if err != nil {
t.Fatalf("store.Add failed: %v", err)
}
var phonyData string
for k, v := range remote.Data {
phonyData = v
delete(remote.Data, k)
}
orig := &chunks.Chunk{
Type: "testchunk",
Level: 3,
Buf: []byte(GREETING),
}
key, err := store.Add(orig)
if err != nil {
t.Fatalf("store.Add failed: %v", err)
}
// replace it with the phony, preserving key
for k, _ := range remote.Data {
remote.Data[k] = phonyData
}
_, err = store.Get(key, "testchunk", 3)
if err == nil {
t.Fatalf("expected an error")
}
switch e := err.(type) {
case untrusted.CorruptError:
break
default:
t.Errorf("error is wrong type %T: %#v", e, e)
}
}
// caller must hold App.volumes.Mutex
func (app *App) openVolume(tx *db.Tx, id *db.VolumeID) (*fs.Volume, error) {
v, err := tx.Volumes().GetByVolumeID(id)
if err != nil {
return nil, err
}
kvstore, err := app.OpenKV(tx, v.Storage())
if err != nil {
return nil, err
}
chunkStore := kvchunks.New(kvstore)
vol, err := fs.Open(app.DB, chunkStore, id, (*peer.PublicKey)(app.Keys.Sign.Pub))
if err != nil {
return nil, err
}
return vol, nil
}
func (c *casCommand) Setup() (ok bool) {
path := filepath.Join(cli.Bazil.Config.DataDir.String(), c.Config.Path)
var kvstore kv.KV
var err error
kvstore, err = kvfiles.Open(path)
if err != nil {
log.Printf("cannot open CAS: %v", err)
return false
}
if c.Config.Sharing != "" {
var secret [32]byte
if err := c.getSharingKey(c.Config.Sharing, &secret); err != nil {
log.Printf("cannot get sharing key: %q: %v", c.Config.Sharing, err)
return false
}
kvstore = untrusted.New(kvstore, &secret)
}
c.State.Store = kvchunks.New(kvstore)
return true
}
func TestSimple(t *testing.T) {
remote := &kvmock.InMemory{}
secret := &[32]byte{
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
42, 42, 42, 42, 42, 42, 42, 42,
}
converg := untrusted.New(remote, secret)
store := kvchunks.New(converg)
orig := &chunks.Chunk{
Type: "testchunk",
Level: 3,
Buf: []byte(GREETING),
}
key, err := store.Add(orig)
if err != nil {
t.Fatalf("store.Add failed: %v", err)
}
got, err := store.Get(key, "testchunk", 3)
if err != nil {
t.Fatalf("store.Get failed: %v", err)
}
if got == nil {
t.Fatalf("store.Get gave nil chunk")
}
if g, e := got.Type, "testchunk"; g != e {
t.Errorf("unexpected chunk data: %v != %v", g, e)
}
if g, e := got.Level, uint8(3); g != e {
t.Errorf("unexpected chunk data: %v != %v", g, e)
}
if g, e := string(got.Buf), GREETING; g != e {
t.Errorf("unexpected chunk data: %v != %v", g, e)
}
}
func TestSyncPull(t *testing.T) {
tmp := tempdir.New(t)
defer tmp.Cleanup()
app1 := bazfstestutil.NewApp(t, tmp.Subdir("app1"))
defer app1.Close()
app2 := bazfstestutil.NewApp(t, tmp.Subdir("app2"))
defer app2.Close()
var wg sync.WaitGroup
defer wg.Wait()
web1 := httptest.ServeHTTP(t, &wg, app1)
defer web1.Close()
pub1 := (*peer.PublicKey)(app1.Keys.Sign.Pub)
pub2 := (*peer.PublicKey)(app2.Keys.Sign.Pub)
var volID db.VolumeID
sharingKey := [32]byte{42, 42, 42, 13}
const volumeName = "foo"
setup1 := func(tx *db.Tx) error {
sharingKey, err := tx.SharingKeys().Add("testkey", &sharingKey)
if err != nil {
return err
}
v, err := tx.Volumes().Create(volumeName, "local", sharingKey)
if err != nil {
return err
}
v.VolumeID(&volID)
p, err := tx.Peers().Make(pub2)
if err != nil {
return err
}
if err := p.Volumes().Allow(v); err != nil {
return err
}
if err := p.Storage().Allow("local"); err != nil {
return err
}
return nil
}
if err := app1.DB.Update(setup1); err != nil {
t.Fatalf("app1 setup: %v", err)
}
setup2 := func(tx *db.Tx) error {
sharingKey, err := tx.SharingKeys().Add("testkey", &sharingKey)
if err != nil {
return err
}
v, err := tx.Volumes().Add(volumeName, &volID, "local", sharingKey)
if err != nil {
return err
}
v.VolumeID(&volID)
p, err := tx.Peers().Make(pub1)
if err != nil {
return err
}
if err := v.Storage().Add("jdoe", "peerkey:"+pub1.String(), sharingKey); err != nil {
return err
}
if err := p.Locations().Set(web1.Addr().String()); err != nil {
return err
}
return nil
}
if err := app2.DB.Update(setup2); err != nil {
t.Fatalf("app2 setup location: %v", err)
}
var chunkStore2 chunks.Store
openKV := func(tx *db.Tx) error {
// This cannot be combined into setup2 because OpenKV/DialPeer
// starts its own transaction, and wouldn't see the
// uncommitted peer.
v, err := tx.Volumes().GetByVolumeID(&volID)
if err != nil {
return err
}
kvstore, err := app2.OpenKV(tx, v.Storage())
if err != nil {
return err
}
chunkStore2 = kvchunks.New(kvstore)
return nil
}
if err := app2.DB.View(openKV); err != nil {
t.Fatalf("cannot open storage for app2: %v", err)
}
const testFileName = "greeting"
const testFileContent = "hello, world"
func() {
mnt := bazfstestutil.Mounted(t, app1, volumeName)
defer mnt.Close()
if err := ioutil.WriteFile(path.Join(mnt.Dir, testFileName), []byte(testFileContent), 0644); err != nil {
t.Fatalf("cannot create file: %v", err)
}
}()
client, err := app2.DialPeer(pub1)
if err != nil {
t.Fatalf("dial: %v", err)
}
defer client.Close()
volIDBuf, err := volID.MarshalBinary()
if err != nil {
t.Fatalf("marshal volume id: %v", err)
}
ctx := context.Background()
stream, err := client.VolumeSyncPull(ctx, &wire.VolumeSyncPullRequest{
VolumeID: volIDBuf,
})
if err != nil {
t.Fatalf("sync failed: %v", err)
}
item, err := stream.Recv()
if err != nil {
t.Fatalf("sync stream failed: %v", err)
}
if g, e := item.Error, wire.VolumeSyncPullItem_SUCCESS; g != e {
t.Errorf("unexpected error: %v != %v", g, e)
}
if g, e := item.Peers, map[uint32][]byte{
0: pub1[:],
1: pub2[:],
}; !reflect.DeepEqual(g, e) {
t.Errorf("bad peers: %v != %v", g, e)
}
wantFiles := map[string]func(*wire.Dirent){
testFileName: func(de *wire.Dirent) {
if de.File == nil {
t.Errorf("wrong type for %q, not a file: %v", de.Name, de)
return
}
var c clock.Clock
if err := c.UnmarshalBinary(de.Clock); err != nil {
t.Errorf("invalid clock for %q: %v", de.Name, err)
return
}
if g, e := c.String(), `{sync{0:1} mod{0:1} create{0:1}}`; g != e {
t.Errorf("wrong clock for %q: %v != %v", de.Name, g, e)
return
}
// verify file contents
manifest, err := de.File.Manifest.ToBlob("file")
if err != nil {
t.Errorf("cannot open manifest for %q: %v", de.Name, err)
return
}
blob, err := blobs.Open(chunkStore2, manifest)
if err != nil {
t.Errorf("cannot open blob for %q: %v", de.Name, err)
return
}
r := io.NewSectionReader(blob, 0, int64(blob.Size()))
buf, err := ioutil.ReadAll(r)
if err != nil {
t.Errorf("cannot read blob for %q: %v", de.Name, err)
return
}
if g, e := string(buf), testFileContent; g != e {
t.Errorf("wrong content for %q: %q != %q", de.Name, g, e)
}
},
}
for _, de := range item.Children {
fn, ok := wantFiles[de.Name]
if !ok {
t.Errorf("unexpected direntry: %q", de.Name)
continue
}
fn(de)
delete(wantFiles, de.Name)
}
for name, _ := range wantFiles {
t.Errorf("missing direntry: %q", name)
}
item, err = stream.Recv()
if err != io.EOF {
t.Errorf("expected eof, got error %v, item=%v", err, item)
}
}