func GarbageCollectAsync(n *core.IpfsNode, ctx context.Context) (<-chan *KeyRemoved, error) {
rmed, err := gc.GC(ctx, n.Blockstore, n.Pinning)
if err != nil {
return nil, err
}
out := make(chan *KeyRemoved)
go func() {
defer close(out)
for k := range rmed {
select {
case out <- &KeyRemoved{k}:
case <-ctx.Done():
return
}
}
}()
return out, nil
}
func GarbageCollect(n *core.IpfsNode, ctx context.Context) error {
ctx, cancel := context.WithCancel(ctx)
defer cancel() // in case error occurs during operation
rmed, err := gc.GC(ctx, n.Blockstore, n.Pinning)
if err != nil {
return err
}
for {
select {
case _, ok := <-rmed:
if !ok {
return nil
}
case <-ctx.Done():
return ctx.Err()
}
}
}
func TestAddGCLive(t *testing.T) {
r := &repo.Mock{
C: config.Config{
Identity: config.Identity{
PeerID: "Qmfoo", // required by offline node
},
},
D: testutil.ThreadSafeCloserMapDatastore(),
}
node, err := core.NewNode(context.Background(), &core.BuildCfg{Repo: r})
if err != nil {
t.Fatal(err)
}
errs := make(chan error)
out := make(chan interface{})
adder, err := NewAdder(context.Background(), node, out)
if err != nil {
t.Fatal(err)
}
dataa := ioutil.NopCloser(bytes.NewBufferString("testfileA"))
rfa := files.NewReaderFile("a", "a", dataa, nil)
// make two files with pipes so we can 'pause' the add for timing of the test
piper, pipew := io.Pipe()
hangfile := files.NewReaderFile("b", "b", piper, nil)
datad := ioutil.NopCloser(bytes.NewBufferString("testfileD"))
rfd := files.NewReaderFile("d", "d", datad, nil)
slf := files.NewSliceFile("files", "files", []files.File{rfa, hangfile, rfd})
addDone := make(chan struct{})
go func() {
defer close(addDone)
defer close(out)
err := adder.AddFile(slf)
if err != nil {
t.Fatal(err)
}
}()
addedHashes := make(map[string]struct{})
select {
case o := <-out:
addedHashes[o.(*AddedObject).Hash] = struct{}{}
case <-addDone:
t.Fatal("add shouldnt complete yet")
}
var gcout <-chan key.Key
gcstarted := make(chan struct{})
go func() {
defer close(gcstarted)
gcchan, err := gc.GC(context.Background(), node.Blockstore, node.Pinning)
if err != nil {
log.Error("GC ERROR:", err)
errs <- err
return
}
gcout = gcchan
}()
// gc shouldnt start until we let the add finish its current file.
pipew.Write([]byte("some data for file b"))
select {
case <-gcstarted:
t.Fatal("gc shouldnt have started yet")
case err := <-errs:
t.Fatal(err)
default:
}
time.Sleep(time.Millisecond * 100) // make sure gc gets to requesting lock
// finish write and unblock gc
pipew.Close()
// receive next object from adder
select {
case o := <-out:
addedHashes[o.(*AddedObject).Hash] = struct{}{}
case err := <-errs:
t.Fatal(err)
}
select {
case <-gcstarted:
case err := <-errs:
t.Fatal(err)
}
for k := range gcout {
if _, ok := addedHashes[k.B58String()]; ok {
t.Fatal("gc'ed a hash we just added")
}
}
var last key.Key
for a := range out {
// wait for it to finish
last = key.B58KeyDecode(a.(*AddedObject).Hash)
}
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
root, err := node.DAG.Get(ctx, last)
if err != nil {
t.Fatal(err)
}
err = dag.EnumerateChildren(ctx, node.DAG, root, key.NewKeySet())
if err != nil {
t.Fatal(err)
}
}