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Add support for SplitBlob and SpliceBlob methods #345
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,43 @@ | ||
| load("@rules_go//go:def.bzl", "go_library", "go_test") | ||
|
|
||
| go_library( | ||
| name = "chunklistvalidating", | ||
| srcs = [ | ||
| "chunk_concatenating_reader.go", | ||
| "chunk_list_validating_blob_access.go", | ||
| "chunker.go", | ||
| "reader_chunker.go", | ||
| ], | ||
| importpath = "github.com/buildbarn/bb-storage/pkg/blobstore/chunklistvalidating", | ||
| visibility = ["//visibility:public"], | ||
| deps = [ | ||
| "//pkg/blobstore", | ||
| "//pkg/blobstore/buffer", | ||
| "//pkg/digest", | ||
| "//pkg/util", | ||
| "@bazel_remote_apis//build/bazel/remote/execution/v2:remote_execution_go_proto", | ||
| "@com_github_buildbarn_go_cdc//:go-cdc", | ||
| "@org_golang_google_grpc//codes", | ||
| "@org_golang_google_grpc//status", | ||
| "@org_golang_x_sync//errgroup", | ||
| ], | ||
| ) | ||
|
|
||
| go_test( | ||
| name = "chunklistvalidating_test", | ||
| srcs = [ | ||
| "chunk_list_validating_blob_access_test.go", | ||
| "fake_blob_access_test.go", | ||
| "reader_chunker_test.go", | ||
| ], | ||
| deps = [ | ||
| ":chunklistvalidating", | ||
| "//pkg/blobstore", | ||
| "//pkg/blobstore/buffer", | ||
| "//pkg/digest", | ||
| "@bazel_remote_apis//build/bazel/remote/execution/v2:remote_execution_go_proto", | ||
| "@com_github_stretchr_testify//require", | ||
| "@org_golang_google_grpc//codes", | ||
| "@org_golang_google_grpc//status", | ||
| ], | ||
| ) |
68 changes: 68 additions & 0 deletions
68
pkg/blobstore/chunklistvalidating/chunk_concatenating_reader.go
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,68 @@ | ||
| package chunklistvalidating | ||
|
|
||
| import ( | ||
| "context" | ||
| "io" | ||
|
|
||
| "github.com/buildbarn/bb-storage/pkg/blobstore" | ||
| "github.com/buildbarn/bb-storage/pkg/digest" | ||
| "github.com/buildbarn/bb-storage/pkg/util" | ||
| "google.golang.org/grpc/codes" | ||
| "google.golang.org/grpc/status" | ||
| ) | ||
|
|
||
| // chunkConcatenatingReader is a helper utility that implements the | ||
| // io.ReadCloser api over a series of digest.Digest objectes fetched | ||
| // sequentially from the CAS. | ||
| type chunkConcatenatingReader struct { | ||
| ctx context.Context | ||
| contentAddressableStorage blobstore.BlobAccess | ||
| chunkDigests []digest.Digest | ||
| currentIndex int | ||
| currentReader io.ReadCloser | ||
| closed bool | ||
| } | ||
|
|
||
| func (r *chunkConcatenatingReader) Read(p []byte) (int, error) { | ||
| if r.closed { | ||
| return 0, status.Error(codes.Internal, "Reader is already closed") | ||
| } | ||
| for { | ||
| if r.currentReader == nil { | ||
| if r.currentIndex >= len(r.chunkDigests) { | ||
| return 0, io.EOF | ||
| } | ||
| chunkDigest := r.chunkDigests[r.currentIndex] | ||
| b := r.contentAddressableStorage.Get(r.ctx, chunkDigest) | ||
| r.currentReader = b.ToReader() | ||
| r.currentIndex++ | ||
| } | ||
|
|
||
| n, err := r.currentReader.Read(p) | ||
| if n > 0 { | ||
| return n, nil | ||
| } | ||
| if err == io.EOF { | ||
| err = r.currentReader.Close() | ||
| r.currentReader = nil | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| continue | ||
| } | ||
| if err != nil { | ||
| _ = r.currentReader.Close() | ||
| r.currentReader = nil | ||
| return 0, util.StatusWrap(err, "Failed to read chunk") | ||
| } | ||
| } | ||
| } | ||
|
|
||
| func (r *chunkConcatenatingReader) Close() (err error) { | ||
| r.closed = true | ||
| if r.currentReader != nil { | ||
| err = r.currentReader.Close() | ||
| r.currentReader = nil | ||
| } | ||
| return err | ||
| } |
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I would have imagined that this added a capabilities provider to
cacheCapabilitiesAuthorizers. Why doesn't t do that?There was a problem hiding this comment.
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I don't need to add it because Capabilities are propagated from the CAS and not from the CLS. Do you want us to propagate the parameters from the CLS instead?