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test: check behavior of loading UnixFS sharded directories with missi…
…ng shards
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package test | ||
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import ( | ||
"context" | ||
"strconv" | ||
"testing" | ||
"time" | ||
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files "github.com/ipfs/go-ipfs-files" | ||
"github.com/ipfs/go-merkledag" | ||
uio "github.com/ipfs/go-unixfs/io" | ||
"github.com/ipfs/interface-go-ipfs-core/options" | ||
"github.com/ipfs/interface-go-ipfs-core/path" | ||
"github.com/ipld/go-ipld-prime" | ||
) | ||
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func TestPathUnixFSHAMTPartial(t *testing.T) { | ||
ctx, cancel := context.WithCancel(context.Background()) | ||
defer cancel() | ||
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// Create a node | ||
apis, err := NodeProvider{}.MakeAPISwarm(ctx, true, 1) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
a := apis[0] | ||
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// Setting this after instantiating the swarm so that it's not clobbered by loading the go-ipfs config | ||
prevVal := uio.UseHAMTSharding | ||
uio.UseHAMTSharding = true | ||
defer func() { | ||
uio.UseHAMTSharding = prevVal | ||
}() | ||
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// Create and add a sharded directory | ||
dir := make(map[string]files.Node) | ||
// Make sure we have at least two levels of sharding | ||
for i := 0; i < uio.DefaultShardWidth + 1; i++ { | ||
dir[strconv.Itoa(i)] = files.NewBytesFile([]byte(strconv.Itoa(i))) | ||
} | ||
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r, err := a.Unixfs().Add(ctx, files.NewMapDirectory(dir), options.Unixfs.Pin(false)) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
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// Get the root of the directory | ||
nd, err := a.Dag().Get(ctx, r.Cid()) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
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// Make sure the root is a DagPB node (this API might change in the future to account for ADLs) | ||
_ = nd.(ipld.Node) | ||
pbNode := nd.(*merkledag.ProtoNode) | ||
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// Remove one of the sharded directory blocks | ||
if err := a.Block().Rm(ctx, path.IpfsPath(pbNode.Links()[0].Cid)); err != nil { | ||
t.Fatal(err) | ||
} | ||
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// Try and resolve each of the entries in the sharded directory which will result in pathing over the missing block | ||
// | ||
// Note: we could just check a particular path here, but it would require either greater use of the HAMT internals | ||
// or some hard coded values in the test both of which would be a pain to follow. | ||
for k := range dir { | ||
// The node will go out to the (non-existent) network looking for the missing block. Make sure we're erroring | ||
// because we exceeded the timeout on our query | ||
timeoutCtx, timeoutCancel := context.WithTimeout(ctx, time.Second * 1) | ||
_, err := a.ResolveNode(timeoutCtx, path.Join(r, k)) | ||
if err != nil { | ||
if timeoutCtx.Err() == nil { | ||
t.Fatal(err) | ||
} | ||
} | ||
timeoutCancel() | ||
} | ||
} |