diff --git a/.github/workflows/validate.yaml b/.github/workflows/validate.yaml index 280c2ba..b1244c6 100644 --- a/.github/workflows/validate.yaml +++ b/.github/workflows/validate.yaml @@ -24,7 +24,7 @@ jobs: - uses: actions/checkout@v1 - uses: actions/setup-go@v2 with: - go-version: '^1.14.1' + go-version: '^1.15.6' - uses: actions/cache@v1 with: diff --git a/assemble.go b/assemble.go index aed3a12..6a407bd 100644 --- a/assemble.go +++ b/assemble.go @@ -143,7 +143,7 @@ func AssembleFile(ctx context.Context, name string, idx Index, s Store, seeds [] if err != nil { return err } - b, err := chunk.Uncompressed() + b, err := chunk.Data() if err != nil { return err } diff --git a/chop.go b/chop.go index 238a1ef..416eef3 100644 --- a/chop.go +++ b/chop.go @@ -81,5 +81,5 @@ func readChunkFromFile(f *os.File, c IndexChunk) (*Chunk, error) { if _, err = io.ReadFull(f, b); err != nil { return nil, err } - return NewChunkWithID(c.ID, b, nil, false) + return NewChunkWithID(c.ID, b, false) } diff --git a/chunk.go b/chunk.go index 6d79465..6421b96 100644 --- a/chunk.go +++ b/chunk.go @@ -4,28 +4,31 @@ import ( "errors" ) -// Chunk holds chunk data compressed, uncompressed, or both. If a chunk is created -// from compressed data, such as read from a compressed chunk store, and later the -// application requires the uncompressed data, it'll be decompressed on demand and -// also stored in Chunk. The same happens when the Chunk is made from uncompressed -// bytes and then to be stored in a compressed form. +// Chunk holds chunk data plain, storage format, or both. If a chunk is created +// from storage data, such as read from a compressed chunk store, and later the +// application requires the plain data, it'll be converted on demand by applying +// the given storage converters in reverse order. The converters can only be used +// to read the plain data, not to convert back to storage format. type Chunk struct { - compressed, uncompressed []byte - id ChunkID - idCalculated bool + data []byte // Plain data if available + storage []byte // Storage format (compressed, encrypted, etc) + converters Converters // Modifiers to convert from storage format to plain + id ChunkID + idCalculated bool } -// NewChunkFromUncompressed creates a new chunk from uncompressed data. -func NewChunkFromUncompressed(b []byte) *Chunk { - return &Chunk{uncompressed: b} +// NewChunk creates a new chunk from plain data. The data is trusted and the ID is +// calculated on demand. +func NewChunk(b []byte) *Chunk { + return &Chunk{data: b} } // NewChunkWithID creates a new chunk from either compressed or uncompressed data // (or both if available). It also expects an ID and validates that it matches // the uncompressed data unless skipVerify is true. If called with just compressed // data, it'll decompress it for the ID validation. -func NewChunkWithID(id ChunkID, uncompressed, compressed []byte, skipVerify bool) (*Chunk, error) { - c := &Chunk{id: id, uncompressed: uncompressed, compressed: compressed} +func NewChunkWithID(id ChunkID, b []byte, skipVerify bool) (*Chunk, error) { + c := &Chunk{id: id, data: b} if skipVerify { c.idCalculated = true // Pretend this was calculated. No need to re-calc later return c, nil @@ -37,32 +40,33 @@ func NewChunkWithID(id ChunkID, uncompressed, compressed []byte, skipVerify bool return c, nil } -// Compressed returns the chunk data in compressed form. If the chunk was created -// with uncompressed data only, it'll be compressed, stored and returned. The -// caller must not modify the data in the returned slice. -func (c *Chunk) Compressed() ([]byte, error) { - if len(c.compressed) > 0 { - return c.compressed, nil +// NewChunkFromStorage builds a new chunk from data that is not in plain format. +// It uses raw storage format from it source and the modifiers are used to convert +// into plain data as needed. +func NewChunkFromStorage(id ChunkID, b []byte, modifiers Converters, skipVerify bool) (*Chunk, error) { + c := &Chunk{id: id, storage: b, converters: modifiers} + if skipVerify { + c.idCalculated = true // Pretend this was calculated. No need to re-calc later + return c, nil } - if len(c.uncompressed) > 0 { - var err error - c.compressed, err = Compress(c.uncompressed) - return c.compressed, err + sum := c.ID() + if sum != id { + return nil, ChunkInvalid{ID: id, Sum: sum} } - return nil, errors.New("no data in chunk") + return c, nil } -// Uncompressed returns the chunk data in uncompressed form. If the chunk was created +// Data returns the chunk data in uncompressed form. If the chunk was created // with compressed data only, it'll be decompressed, stored and returned. The // caller must not modify the data in the returned slice. -func (c *Chunk) Uncompressed() ([]byte, error) { - if len(c.uncompressed) > 0 { - return c.uncompressed, nil +func (c *Chunk) Data() ([]byte, error) { + if len(c.data) > 0 { + return c.data, nil } - if len(c.compressed) > 0 { + if len(c.storage) > 0 { var err error - c.uncompressed, err = Decompress(nil, c.compressed) - return c.uncompressed, err + c.data, err = c.converters.fromStorage(c.storage) + return c.data, err } return nil, errors.New("no data in chunk") } @@ -71,11 +75,10 @@ func (c *Chunk) Uncompressed() ([]byte, error) { // after the first call and doesn't need to be re-calculated. Note that calculating // the ID may mean decompressing the data first. func (c *Chunk) ID() ChunkID { - if c.idCalculated { return c.id } - b, err := c.Uncompressed() + b, err := c.Data() if err != nil { return ChunkID{} } diff --git a/cmd/desync/chunkserver.go b/cmd/desync/chunkserver.go index d53c930..6791ad4 100644 --- a/cmd/desync/chunkserver.go +++ b/cmd/desync/chunkserver.go @@ -127,7 +127,12 @@ func runChunkServer(ctx context.Context, opt chunkServerOptions, args []string) } defer s.Close() - handler := desync.NewHTTPHandler(s, opt.writable, opt.skipVerifyWrite, opt.uncompressed, opt.auth) + var converters desync.Converters + if !opt.uncompressed { + converters = desync.Converters{desync.Compressor{}} + } + + handler := desync.NewHTTPHandler(s, opt.writable, opt.skipVerifyWrite, converters, opt.auth) // Wrap the handler in a logger if requested switch opt.logFile { diff --git a/cmd/desync/chunkserver_test.go b/cmd/desync/chunkserver_test.go index df54ddf..a984095 100644 --- a/cmd/desync/chunkserver_test.go +++ b/cmd/desync/chunkserver_test.go @@ -6,7 +6,6 @@ import ( "io/ioutil" "net" "net/http" - "os" "path/filepath" "strings" "testing" @@ -16,22 +15,19 @@ import ( ) func TestChunkServerReadCommand(t *testing.T) { + outdir := t.TempDir() + // Start a read-only server addr, cancel := startChunkServer(t, "-s", "testdata/blob1.store") defer cancel() store := fmt.Sprintf("http://%s/", addr) - outdir, err := ioutil.TempDir("", "") - require.NoError(t, err) - defer os.RemoveAll(outdir) - blob := filepath.Join(outdir, "blob") - // Run an "extract" command to confirm the chunk server provides chunks extractCmd := newExtractCommand(context.Background()) - extractCmd.SetArgs([]string{"-s", store, "testdata/blob1.caibx", blob}) + extractCmd.SetArgs([]string{"-s", store, "testdata/blob1.caibx", filepath.Join(outdir, "blob")}) stdout = ioutil.Discard extractCmd.SetOutput(ioutil.Discard) - _, err = extractCmd.ExecuteC() + _, err := extractCmd.ExecuteC() require.NoError(t, err) // The server should not be serving up arbitrary files from disk. Expect a 400 error @@ -57,10 +53,7 @@ func TestChunkServerReadCommand(t *testing.T) { } func TestChunkServerWriteCommand(t *testing.T) { - // Create a blank store - outdir, err := ioutil.TempDir("", "") - require.NoError(t, err) - defer os.RemoveAll(outdir) + outdir := t.TempDir() // Start a (writable) server addr, cancel := startChunkServer(t, "-s", outdir, "-w") @@ -71,7 +64,7 @@ func TestChunkServerWriteCommand(t *testing.T) { chopCmd := newChopCommand(context.Background()) chopCmd.SetArgs([]string{"-s", store, "testdata/blob1.caibx", "testdata/blob1"}) chopCmd.SetOutput(ioutil.Discard) - _, err = chopCmd.ExecuteC() + _, err := chopCmd.ExecuteC() require.NoError(t, err) // The server should not accept arbitrary (non-chunk) files. @@ -82,9 +75,7 @@ func TestChunkServerWriteCommand(t *testing.T) { require.Equal(t, http.StatusBadRequest, resp.StatusCode) } func TestChunkServerVerifiedTLS(t *testing.T) { - outdir, err := ioutil.TempDir("", "") - require.NoError(t, err) - defer os.RemoveAll(outdir) + outdir := t.TempDir() // Start a (writable) server addr, cancel := startChunkServer(t, "-s", "testdata/blob1.store", "--key", "testdata/server.key", "--cert", "testdata/server.crt") @@ -96,14 +87,12 @@ func TestChunkServerVerifiedTLS(t *testing.T) { extractCmd := newExtractCommand(context.Background()) extractCmd.SetArgs([]string{"--ca-cert", "testdata/ca.crt", "-s", store, "testdata/blob1.caibx", filepath.Join(outdir, "blob1")}) extractCmd.SetOutput(ioutil.Discard) - _, err = extractCmd.ExecuteC() + _, err := extractCmd.ExecuteC() require.NoError(t, err) } func TestChunkServerInsecureTLS(t *testing.T) { - outdir, err := ioutil.TempDir("", "") - require.NoError(t, err) - defer os.RemoveAll(outdir) + outdir := t.TempDir() stderr = ioutil.Discard stdout = ioutil.Discard @@ -118,7 +107,7 @@ func TestChunkServerInsecureTLS(t *testing.T) { extractCmd := newExtractCommand(context.Background()) extractCmd.SetArgs([]string{"-t", "-s", store, "testdata/blob1.caibx", filepath.Join(outdir, "blob1")}) // extractCmd.SetOutput(ioutil.Discard) - _, err = extractCmd.ExecuteC() + _, err := extractCmd.ExecuteC() require.NoError(t, err) // Run the "extract" command without accepting any cert. Should fail. @@ -132,9 +121,7 @@ func TestChunkServerInsecureTLS(t *testing.T) { } func TestChunkServerMutualTLS(t *testing.T) { - outdir, err := ioutil.TempDir("", "") - require.NoError(t, err) - defer os.RemoveAll(outdir) + outdir := t.TempDir() stderr = ioutil.Discard stdout = ioutil.Discard @@ -158,7 +145,7 @@ func TestChunkServerMutualTLS(t *testing.T) { "--client-cert", "testdata/client.crt", "--ca-cert", "testdata/ca.crt", "-s", store, "testdata/blob1.caibx", filepath.Join(outdir, "blob1")}) - _, err = extractCmd.ExecuteC() + _, err := extractCmd.ExecuteC() require.NoError(t, err) // Same without client certs, should fail. diff --git a/coverter.go b/coverter.go new file mode 100644 index 0000000..a4692ea --- /dev/null +++ b/coverter.go @@ -0,0 +1,97 @@ +package desync + +// Converters are modifiers for chunk data, such as compression or encryption. +// They are used to prepare chunk data for storage, or to read it from storage. +// The order of the conversion layers matters. When plain data is prepared for +// storage, the toStorage method is used in the order the layers are defined. +// To read from storage, the fromStorage method is called for each layer in +// reverse order. +type Converters []converter + +// Apply every data converter in the forward direction. +func (s Converters) toStorage(in []byte) ([]byte, error) { + var ( + b = in + err error + ) + for _, layer := range s { + b, err = layer.toStorage(b) + if err != nil { + return nil, err + } + } + return b, nil +} + +// Apply the layers backwards. +func (s Converters) fromStorage(in []byte) ([]byte, error) { + var ( + b = in + err error + ) + for i := len(s) - 1; i >= 0; i-- { + b, err = s[i].fromStorage(b) + if err != nil { + return nil, err + } + } + return b, nil +} + +// Returns true is conversion involves compression. Typically +// used to determine the correct file-extension. +func (s Converters) hasCompression() bool { + for _, layer := range s { + if _, ok := layer.(Compressor); ok { + return true + } + } + return false +} + +// Returns true if both converters have the same layers in the +// same order. Used for optimizations. +func (s Converters) equal(c Converters) bool { + if len(s) != len(c) { + return false + } + for i := 0; i < len(s); i++ { + if !s[i].equal(c[i]) { + return false + } + } + return true +} + +// converter is a storage data modifier layer. +type converter interface { + // Convert data from it's original form to storage format. + // The input could be plain data, or the output of a prior + // converter. + toStorage([]byte) ([]byte, error) + + // Convert data from it's storage format towards it's plain + // form. The input could be encrypted or compressed, while + // the output may be used for the next conversion layer. + fromStorage([]byte) ([]byte, error) + + equal(converter) bool +} + +// Compression layer +type Compressor struct{} + +var _ converter = Compressor{} + +func (d Compressor) toStorage(in []byte) ([]byte, error) { + return Compress(in) +} + +func (d Compressor) fromStorage(in []byte) ([]byte, error) { + return Decompress(nil, in) +} + +func (d Compressor) equal(c converter) bool { + _, ok := c.(Compressor) + return ok +} diff --git a/dedupqueue_test.go b/dedupqueue_test.go index 7914eef..a2b71cb 100644 --- a/dedupqueue_test.go +++ b/dedupqueue_test.go @@ -61,7 +61,7 @@ func TestDedupQueueParallel(t *testing.T) { GetChunkFunc: func(ChunkID) (*Chunk, error) { time.Sleep(time.Millisecond) // make it artificially slow to not complete too early atomic.AddInt64(&requests, 1) - return NewChunkFromUncompressed([]byte{0}), nil + return NewChunk([]byte{0}), nil }, } q := NewDedupQueue(store) diff --git a/gcs.go b/gcs.go index 00c2969..93e8fab 100644 --- a/gcs.go +++ b/gcs.go @@ -20,11 +20,12 @@ var _ WriteStore = GCStore{} // GCStoreBase is the base object for all chunk and index stores with Google // Storage backing type GCStoreBase struct { - Location string - client *storage.BucketHandle - bucket string - prefix string - opt StoreOptions + Location string + client *storage.BucketHandle + bucket string + prefix string + opt StoreOptions + converters Converters } // GCStore is a read-write store with Google Storage backing @@ -54,7 +55,7 @@ func normalizeGCPrefix(path string) string { func NewGCStoreBase(u *url.URL, opt StoreOptions) (GCStoreBase, error) { var err error ctx := context.TODO() - s := GCStoreBase{Location: u.String(), opt: opt} + s := GCStoreBase{Location: u.String(), opt: opt, converters: opt.converters()} if u.Scheme != "gs" { return s, fmt.Errorf("invalid scheme '%s', expected 'gs'", u.Scheme) } @@ -125,10 +126,7 @@ func (s GCStore) GetChunk(id ChunkID) (*Chunk, error) { log.Debug("Retrieved chunk from GCS bucket") - if s.opt.Uncompressed { - return NewChunkWithID(id, b, nil, s.opt.SkipVerify) - } - return NewChunkWithID(id, nil, b, s.opt.SkipVerify) + return NewChunkFromStorage(id, b, s.converters, s.opt.SkipVerify) } // StoreChunk adds a new chunk to the store @@ -139,23 +137,21 @@ func (s GCStore) StoreChunk(chunk *Chunk) error { name := s.nameFromID(chunk.ID()) var ( - b []byte - err error log = Log.WithFields(logrus.Fields{ "bucket": s.bucket, "name": name, }) ) - if s.opt.Uncompressed { - b, err = chunk.Uncompressed() - } else { - b, err = chunk.Compressed() + b, err := chunk.Data() + if err != nil { + log.WithError(err).Error("Cannot retrieve chunk data") + return err } - + b, err = s.converters.toStorage(b) if err != nil { log.WithError(err).Error("Cannot retrieve chunk data") - return errors.Wrap(err, s.String()) + return err } r := bytes.NewReader(b) diff --git a/go.mod b/go.mod index d2f6266..b949e23 100644 --- a/go.mod +++ b/go.mod @@ -1,31 +1,29 @@ module github.com/folbricht/desync -go 1.13 +go 1.15 require ( - cloud.google.com/go/storage v1.6.0 + cloud.google.com/go/storage v1.12.0 github.com/boljen/go-bitmap v0.0.0-20151001105940-23cd2fb0ce7d github.com/datadog/zstd v1.4.5 - github.com/dchest/siphash v1.2.1 - github.com/fatih/color v1.7.0 // indirect + github.com/dchest/siphash v1.2.2 + github.com/fatih/color v1.10.0 // indirect github.com/folbricht/tempfile v0.0.1 - github.com/go-ini/ini v1.57.0 + github.com/go-ini/ini v1.62.0 github.com/hanwen/go-fuse/v2 v2.0.3 - github.com/klauspost/compress v1.10.10 - github.com/mattn/go-colorable v0.0.9 // indirect - github.com/mattn/go-isatty v0.0.4 // indirect - github.com/mattn/go-runewidth v0.0.3 // indirect + github.com/klauspost/compress v1.11.4 + github.com/mattn/go-runewidth v0.0.9 // indirect github.com/minio/minio-go/v6 v6.0.57 github.com/pkg/errors v0.9.1 - github.com/pkg/sftp v1.11.0 - github.com/pkg/xattr v0.4.1 - github.com/sirupsen/logrus v1.6.0 - github.com/spf13/cobra v1.0.0 + github.com/pkg/sftp v1.12.0 + github.com/pkg/xattr v0.4.3 + github.com/sirupsen/logrus v1.7.0 + github.com/spf13/cobra v1.1.1 github.com/spf13/pflag v1.0.5 github.com/stretchr/testify v1.6.1 - golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9 - golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 - google.golang.org/api v0.18.0 + golang.org/x/crypto v0.0.0-20201221181555-eec23a3978ad + golang.org/x/sync v0.0.0-20201207232520-09787c993a3a + google.golang.org/api v0.36.0 gopkg.in/cheggaaa/pb.v1 v1.0.28 - gopkg.in/ini.v1 v1.57.0 // indirect + gopkg.in/ini.v1 v1.62.0 // indirect ) diff --git a/go.sum b/go.sum index faed781..2b02cf5 100644 --- a/go.sum +++ b/go.sum @@ -9,21 +9,38 @@ cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6T cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4= cloud.google.com/go v0.53.0 h1:MZQCQQaRwOrAcuKjiHWHrgKykt4fZyuwF2dtiG3fGW8= cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M= +cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc= +cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk= +cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs= +cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc= +cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY= +cloud.google.com/go v0.66.0/go.mod h1:dgqGAjKCDxyhGTtC9dAREQGUJpkceNm1yt590Qno0Ko= +cloud.google.com/go v0.72.0 h1:eWRCuwubtDrCJG0oSUMgnsbD4CmPFQF2ei4OFbXvwww= +cloud.google.com/go v0.72.0/go.mod h1:M+5Vjvlc2wnp6tjzE102Dw08nGShTscUx2nZMufOKPI= cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o= cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE= cloud.google.com/go/bigquery v1.4.0 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h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA= golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= @@ -337,13 +447,17 @@ golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJ golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e h1:vcxGaoTs7kV8m5Np9uUNQin4BrLOthgV7252N8V+FwY= golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= +golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM= golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208 h1:qwRHBd0NqMbJxfbotnDhm2ByMI1Shq4Y6oRJo21SGJA= golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod 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h1:TB2adYChydJhpapK golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= golang.org/x/tools v0.0.0-20200224181240-023911ca70b2 h1:L/G4KZvrQn7FWLN/LlulBtBzrLUhqjiGfTWWDmrh+IQ= golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= +golang.org/x/tools v0.0.0-20200227222343-706bc42d1f0d/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28= +golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw= +golang.org/x/tools v0.0.0-20200312045724-11d5b4c81c7d/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw= +golang.org/x/tools v0.0.0-20200331025713-a30bf2db82d4/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8= +golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= +golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE= 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v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE= google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M= google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg= @@ -425,12 +577,27 @@ google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsb google.golang.org/api v0.17.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= google.golang.org/api v0.18.0 h1:TgDr+1inK2XVUKZx3BYAqQg/GwucGdBkzZjWaTg/I+A= google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= +google.golang.org/api v0.19.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= +google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= +google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE= +google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE= +google.golang.org/api v0.28.0/go.mod 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h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU= +google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4= +google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c= +google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c= gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw= gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 h1:qIbj1fsPNlZgppZ+VLlY7N33q108Sa+fhmuc+sWQYwY= @@ -466,15 +671,16 @@ gopkg.in/cheggaaa/pb.v1 v1.0.28 h1:n1tBJnnK2r7g9OW2btFH91V92STTUevLXYFb8gy9EMk= gopkg.in/cheggaaa/pb.v1 v1.0.28/go.mod h1:V/YB90LKu/1FcN3WVnfiiE5oMCibMjukxqG/qStrOgw= gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI= gopkg.in/ini.v1 v1.42.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= -gopkg.in/ini.v1 v1.57.0 h1:9unxIsFcTt4I55uWluz+UmL95q4kdJ0buvQ1ZIqVQww= -gopkg.in/ini.v1 v1.57.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= -gopkg.in/ini.v1 v1.58.0 h1:VdDvTzv/005R8vEFyQ56bpEnOKTNPbpJhL0VCohxlQw= -gopkg.in/ini.v1 v1.58.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= +gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= +gopkg.in/ini.v1 v1.62.0 h1:duBzk771uxoUuOlyRLkHsygud9+5lrlGjdFBb4mSKDU= +gopkg.in/ini.v1 v1.62.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k= gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo= gopkg.in/yaml.v2 v2.0.0-20170812160011-eb3733d160e7/go.mod h1:JAlM8MvJe8wmxCU4Bli9HhUf9+ttbYbLASfIpnQbh74= gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= +gopkg.in/yaml.v2 v2.2.8/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo= gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM= honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4= @@ -484,6 +690,7 @@ honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWh honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg= honnef.co/go/tools v0.0.1-2020.1.3 h1:sXmLre5bzIR6ypkjXCDI3jHPssRhc8KD/Ome589sc3U= honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= +honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k= rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8= rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0= rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA= diff --git a/httphandler.go b/httphandler.go index e9a0a89..06e9d50 100644 --- a/httphandler.go +++ b/httphandler.go @@ -16,12 +16,18 @@ type HTTPHandler struct { HTTPHandlerBase s Store SkipVerifyWrite bool - Uncompressed bool + + // Storage-side of the converters in this case is towards the client + converters Converters + + // Use the file extension for compressed chunks + compressed bool } -// NewHTTPHandler initializes and returns a new HTTP handler for a chunks erver. -func NewHTTPHandler(s Store, writable, skipVerifyWrite, uncompressed bool, auth string) http.Handler { - return HTTPHandler{HTTPHandlerBase{"chunk", writable, auth}, s, skipVerifyWrite, uncompressed} +// NewHTTPHandler initializes and returns a new HTTP handler for a chunks server. +func NewHTTPHandler(s Store, writable, skipVerifyWrite bool, converters Converters, auth string) http.Handler { + compressed := converters.hasCompression() + return HTTPHandler{HTTPHandlerBase{"chunk", writable, auth}, s, skipVerifyWrite, converters, compressed} } func (h HTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { @@ -43,7 +49,7 @@ func (h HTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) { h.put(id, w, r) default: w.WriteHeader(http.StatusMethodNotAllowed) - w.Write([]byte("only GET, PUT and HEAD are supported")) + _, _ = w.Write([]byte("only GET, PUT and HEAD are supported")) } } @@ -51,10 +57,17 @@ func (h HTTPHandler) get(id ChunkID, w http.ResponseWriter) { var b []byte chunk, err := h.s.GetChunk(id) if err == nil { - if h.Uncompressed { - b, err = chunk.Uncompressed() + // Optimization for when the chunk modifiers match those + // of the chunk server. In that case it's not necessary + // to convert back and forth. Just use the raw data as loaded + // from the store. + if len(chunk.storage) > 0 && h.converters.equal(chunk.converters) { + b = chunk.storage } else { - b, err = chunk.Compressed() + b, err = chunk.Data() + if err == nil { + b, err = h.converters.toStorage(b) + } } } h.HTTPHandlerBase.get(id.String(), b, err, w) @@ -87,7 +100,7 @@ func (h HTTPHandler) put(id ChunkID, w http.ResponseWriter, r *http.Request) { return } - // Read the chunk into memory + // Read the raw chunk data into memory b := new(bytes.Buffer) if _, err := io.Copy(b, r.Body); err != nil { w.WriteHeader(http.StatusInternalServerError) @@ -96,12 +109,7 @@ func (h HTTPHandler) put(id ChunkID, w http.ResponseWriter, r *http.Request) { } // Turn it into a chunk, and validate the ID unless verification is disabled - var chunk *Chunk - if h.Uncompressed { - chunk, err = NewChunkWithID(id, b.Bytes(), nil, h.SkipVerifyWrite) - } else { - chunk, err = NewChunkWithID(id, nil, b.Bytes(), h.SkipVerifyWrite) - } + chunk, err := NewChunkFromStorage(id, b.Bytes(), h.converters, h.SkipVerifyWrite) if err != nil { http.Error(w, err.Error(), http.StatusBadRequest) return @@ -117,7 +125,7 @@ func (h HTTPHandler) put(id ChunkID, w http.ResponseWriter, r *http.Request) { func (h HTTPHandler) idFromPath(p string) (ChunkID, error) { ext := CompressedChunkExt - if h.Uncompressed { + if !h.compressed { if strings.HasSuffix(p, CompressedChunkExt) { return ChunkID{}, errors.New("compressed chunk requested from http chunk store serving uncompressed chunks") } diff --git a/httphandler_test.go b/httphandler_test.go index 42efd7a..86068cc 100644 --- a/httphandler_test.go +++ b/httphandler_test.go @@ -1,144 +1,105 @@ package desync import ( - "io/ioutil" "net/http/httptest" "net/url" - "os" "testing" + + "github.com/stretchr/testify/require" ) func TestHTTPHandlerReadWrite(t *testing.T) { - // Setup a temporary store used as upstream store that the HTTP server - // pulls from - store, err := ioutil.TempDir("", "store") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(store) + store := t.TempDir() upstream, err := NewLocalStore(store, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Start a read-write capable server and a read-only server - rw := httptest.NewServer(NewHTTPHandler(upstream, true, false, false, "")) + rw := httptest.NewServer(NewHTTPHandler(upstream, true, false, []converter{Compressor{}}, "")) defer rw.Close() - ro := httptest.NewServer(NewHTTPHandler(upstream, false, false, false, "")) + ro := httptest.NewServer(NewHTTPHandler(upstream, false, false, []converter{Compressor{}}, "")) defer ro.Close() // Initialize HTTP chunks stores, one RW and the other RO rwStoreURL, _ := url.Parse(rw.URL) rwStore, err := NewRemoteHTTPStore(rwStoreURL, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + roStoreURL, _ := url.Parse(ro.URL) roStore, err := NewRemoteHTTPStore(roStoreURL, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Make up some data and store it in the RW store dataIn := []byte("some data") - chunkIn := NewChunkFromUncompressed(dataIn) + chunkIn := NewChunk(dataIn) id := chunkIn.ID() - if err := rwStore.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + + // Write a chunk + err = rwStore.StoreChunk(chunkIn) + require.NoError(t, err) // Check it's in the store - hashChunk, err := rwStore.HasChunk(id) - if err != nil { - t.Fatal(err) - } - if !hashChunk { - t.Fatal("chunk not found in store") - } + hasChunk, err := rwStore.HasChunk(id) + require.NoError(t, err) + require.True(t, hasChunk) // Let's try to send some data to the RO store, that should fail - if err := roStore.StoreChunk(chunkIn); err == nil { - t.Fatal("expected error writing to read-only chunkstore") - } + err = roStore.StoreChunk(chunkIn) + require.Error(t, err, "expected error writing to read-only chunkstore") } func TestHTTPHandlerCompression(t *testing.T) { - // Setup a temporary store used as upstream store that the HTTP server - // pulls from - store, err := ioutil.TempDir("", "store") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(store) + store := t.TempDir() upstream, err := NewLocalStore(store, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Start a server that uses compression, and one that serves uncompressed chunks - co := httptest.NewServer(NewHTTPHandler(upstream, true, false, false, "")) + co := httptest.NewServer(NewHTTPHandler(upstream, true, false, []converter{Compressor{}}, "")) defer co.Close() - un := httptest.NewServer(NewHTTPHandler(upstream, true, false, true, "")) + un := httptest.NewServer(NewHTTPHandler(upstream, true, false, nil, "")) defer un.Close() // Initialize HTTP chunks stores, one RW and the other RO. Also make one that's // trying to get compressed data from a HTTP store that serves only uncompressed. coStoreURL, _ := url.Parse(co.URL) coStore, err := NewRemoteHTTPStore(coStoreURL, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + unStoreURL, _ := url.Parse(un.URL) unStore, err := NewRemoteHTTPStore(unStoreURL, StoreOptions{Uncompressed: true}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + invalidStore, err := NewRemoteHTTPStore(unStoreURL, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Make up some data and store it in the RW store dataIn := []byte("some data") - chunkIn := NewChunkFromUncompressed(dataIn) + chunkIn := NewChunk(dataIn) id := chunkIn.ID() // Try to get compressed chunks from a store that only serves uncompressed chunks - if _, err := invalidStore.GetChunk(id); err == nil { - t.Fatal("expected failure trying to get compressed chunks from uncompressed http store") - } + _, err = invalidStore.GetChunk(id) + require.Error(t, err, "expected failure trying to get compressed chunks from uncompressed http store") - if err := coStore.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + err = coStore.StoreChunk(chunkIn) + require.NoError(t, err) // Check it's in the store when looking for compressed chunks coExists, err := coStore.HasChunk(id) - if err != nil { - t.Fatal(err) - } - if !coExists { - t.Fatal("chunk not found in store") - } + require.NoError(t, err) + require.True(t, coExists) // It's also visible when looking for uncompressed data unExists, err := unStore.HasChunk(id) - if err != nil { - t.Fatal(err) - } - if !unExists { - t.Fatal("chunk not found in store") - } + require.NoError(t, err) + require.True(t, unExists) // Send it uncompressed - if err := unStore.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + err = unStore.StoreChunk(chunkIn) + require.NoError(t, err) // Try to get the uncompressed chunk - if _, err := unStore.GetChunk(id); err != nil { - t.Fatal(err) - } + _, err = unStore.GetChunk(id) + require.NoError(t, err) } diff --git a/index.go b/index.go index b87f56e..02d74f5 100644 --- a/index.go +++ b/index.go @@ -164,7 +164,7 @@ func ChunkStream(ctx context.Context, c Chunker, ws WriteStore, n int) (Index, e g.Go(func() error { for c := range in { // Create a chunk object, needed to calculate the checksum - chunk := NewChunkFromUncompressed(c.b) + chunk := NewChunk(c.b) // Record the index row idxChunk := IndexChunk{Start: c.start, Size: uint64(len(c.b)), ID: chunk.ID()} diff --git a/local.go b/local.go index 002d03a..f38c69b 100644 --- a/local.go +++ b/local.go @@ -28,6 +28,8 @@ type LocalStore struct { UpdateTimes bool opt StoreOptions + + converters Converters } // NewLocalStore creates an instance of a local castore, it only checks presence @@ -40,7 +42,7 @@ func NewLocalStore(dir string, opt StoreOptions) (LocalStore, error) { if !info.IsDir() { return LocalStore{}, fmt.Errorf("%s is not a directory", dir) } - return LocalStore{Base: dir, opt: opt}, nil + return LocalStore{Base: dir, opt: opt, converters: opt.converters()}, nil } // GetChunk reads and returns one (compressed!) chunk from the store @@ -50,10 +52,7 @@ func (s LocalStore) GetChunk(id ChunkID) (*Chunk, error) { if os.IsNotExist(err) { return nil, ChunkMissing{id} } - if s.opt.Uncompressed { - return NewChunkWithID(id, b, nil, s.opt.SkipVerify) - } - return NewChunkWithID(id, nil, b, s.opt.SkipVerify) + return NewChunkFromStorage(id, b, s.converters, s.opt.SkipVerify) } // RemoveChunk deletes a chunk, typically an invalid one, from the filesystem. @@ -69,15 +68,11 @@ func (s LocalStore) RemoveChunk(id ChunkID) error { // StoreChunk adds a new chunk to the store func (s LocalStore) StoreChunk(chunk *Chunk) error { d, p := s.nameFromID(chunk.ID()) - var ( - b []byte - err error - ) - if s.opt.Uncompressed { - b, err = chunk.Uncompressed() - } else { - b, err = chunk.Compressed() + b, err := chunk.Data() + if err != nil { + return err } + b, err = s.converters.toStorage(b) if err != nil { return err } diff --git a/local_test.go b/local_test.go index 12df2d4..0f956f9 100644 --- a/local_test.go +++ b/local_test.go @@ -1,175 +1,126 @@ package desync import ( - "bytes" "context" "io/ioutil" "os" "testing" + + "github.com/stretchr/testify/require" ) func TestLocalStoreCompressed(t *testing.T) { - // Setup a temporary store - store, err := ioutil.TempDir("", "store") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(store) + store := t.TempDir() s, err := NewLocalStore(store, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Make up some data and store it dataIn := []byte("some data") - chunkIn := NewChunkFromUncompressed(dataIn) + chunkIn := NewChunk(dataIn) id := chunkIn.ID() - if err := s.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + + // Store the chunk + err = s.StoreChunk(chunkIn) + require.NoError(t, err) // Check it's in the store hasChunk, err := s.HasChunk(id) - if err != nil { - t.Fatal((err)) - } - if !hasChunk { - t.Fatal("chunk not found in store") - } + require.NoError(t, err) + require.True(t, hasChunk, "chunk not found in store") // Pull the data the "official" way chunkOut, err := s.GetChunk(id) - if err != nil { - t.Fatal(err) - } - dataOut, err := chunkOut.Uncompressed() - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + + dataOut, err := chunkOut.Data() + require.NoError(t, err) // Compare the data that went in with what came out - if !bytes.Equal(dataIn, dataOut) { - t.Fatal("input and output data doesn't match after store/retrieve") - } + require.Equal(t, dataIn, dataOut) // Now let's look at the file in the store directly to make sure it's compressed _, name := s.nameFromID(id) b, err := ioutil.ReadFile(name) - if err != nil { - t.Fatal(err) - } - if bytes.Equal(dataIn, b) { - t.Fatal("chunk is not compressed") - } + require.NoError(t, err) + require.NotEqual(t, dataIn, b, "chunk is not compressed") } func TestLocalStoreUncompressed(t *testing.T) { - // Setup a temporary store - store, err := ioutil.TempDir("", "store") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(store) + store := t.TempDir() s, err := NewLocalStore(store, StoreOptions{Uncompressed: true}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Make up some data and store it dataIn := []byte("some data") - chunkIn := NewChunkFromUncompressed(dataIn) + chunkIn := NewChunk(dataIn) id := chunkIn.ID() - if err := s.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + + err = s.StoreChunk(chunkIn) + require.NoError(t, err) // Check it's in the store hasChunk, err := s.HasChunk(id) - if err != nil { - t.Fatal((err)) - } - if !hasChunk { - t.Fatal("chunk not found in store") - } + require.NoError(t, err) + require.True(t, hasChunk, "chunk not found in store") // Pull the data the "official" way chunkOut, err := s.GetChunk(id) - if err != nil { - t.Fatal(err) - } - dataOut, err := chunkOut.Uncompressed() - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + + dataOut, err := chunkOut.Data() + require.NoError(t, err) // Compare the data that went in with what came out - if !bytes.Equal(dataIn, dataOut) { - t.Fatal("input and output data doesn't match after store/retrieve") - } + require.Equal(t, dataIn, dataOut) // Now let's look at the file in the store directly to make sure it's uncompressed _, name := s.nameFromID(id) b, err := ioutil.ReadFile(name) - if err != nil { - t.Fatal(err) - } - if !bytes.Equal(dataIn, b) { - t.Fatal("chunk is not compressed") - } + require.NoError(t, err) + + require.Equal(t, dataIn, b, "chunk is compressed") } func TestLocalStoreErrorHandling(t *testing.T) { - // Setup a temporary store - store, err := ioutil.TempDir("", "store") - if err != nil { - t.Fatal(err) - } - defer os.RemoveAll(store) + store := t.TempDir() s, err := NewLocalStore(store, StoreOptions{}) - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) // Make up some data and store it dataIn := []byte("some data") - chunkIn := NewChunkFromUncompressed(dataIn) + chunkIn := NewChunk(dataIn) id := chunkIn.ID() - if err := s.StoreChunk(chunkIn); err != nil { - t.Fatal(err) - } + err = s.StoreChunk(chunkIn) + require.NoError(t, err) // Now put an invalid chunk into the store idInvalid, err := ChunkIDFromString("1000000000000000000000000000000000000000000000000000000000000000") - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + dirInvalid, nameInvalid := s.nameFromID(idInvalid) - os.Mkdir(dirInvalid, 0755) - if err := ioutil.WriteFile(nameInvalid, []byte("invalid data"), 0644); err != nil { - t.Fatal(err) - } + _ = os.Mkdir(dirInvalid, 0755) + err = ioutil.WriteFile(nameInvalid, []byte("invalid data"), 0644) + require.NoError(t, err) // Also add a blank chunk idBlank, err := ChunkIDFromString("2000000000000000000000000000000000000000000000000000000000000000") - if err != nil { - t.Fatal(err) - } + require.NoError(t, err) + dirBlank, nameBlank := s.nameFromID(idBlank) - os.Mkdir(dirBlank, 0755) - if err := ioutil.WriteFile(nameBlank, nil, 0644); err != nil { - t.Fatal(err) - } + _ = os.Mkdir(dirBlank, 0755) + err = ioutil.WriteFile(nameBlank, nil, 0644) + require.NoError(t, err) // Let's see if we can retrieve the good chunk and get errors from the bad ones - if _, err := s.GetChunk(id); err != nil { - t.Fatal(err) - } + _, err = s.GetChunk(id) + require.NoError(t, err) + _, err = s.GetChunk(idInvalid) if _, ok := err.(ChunkInvalid); !ok { t.Fatal(err) @@ -180,14 +131,13 @@ func TestLocalStoreErrorHandling(t *testing.T) { } // Run the verify with repair enabled which should get rid of the invalid and blank chunks - if err := s.Verify(context.Background(), 1, true, ioutil.Discard); err != nil { - t.Fatal(err) - } + err = s.Verify(context.Background(), 1, true, ioutil.Discard) + require.NoError(t, err) // Let's see if we can still retrieve the good chunk and get Not Found for the others - if _, err := s.GetChunk(id); err != nil { - t.Fatal(err) - } + _, err = s.GetChunk(id) + require.NoError(t, err) + _, err = s.GetChunk(idInvalid) if _, ok := err.(ChunkMissing); !ok { t.Fatal(err) diff --git a/protocol.go b/protocol.go index d32581a..b45ff62 100644 --- a/protocol.go +++ b/protocol.go @@ -153,8 +153,8 @@ func (p *Protocol) RequestChunk(id ChunkID) (*Chunk, error) { if len(m.Body) < 40 { return nil, errors.New("received chunk too small") } - // The rest should be the chunk data - return NewChunkWithID(id, nil, m.Body[40:], false) + // The rest should be the (compressed) chunk data + return NewChunkFromStorage(id, m.Body[40:], []converter{Compressor{}}, false) default: return nil, fmt.Errorf("unexpected protocol message type %x", m.Type) } diff --git a/protocol_test.go b/protocol_test.go index e5e2b76..edabb86 100644 --- a/protocol_test.go +++ b/protocol_test.go @@ -15,8 +15,8 @@ func TestProtocol(t *testing.T) { // Test data uncompressed := []byte{0, 0, 1, 1, 2, 2} - inChunk := NewChunkFromUncompressed(uncompressed) - compressed, _ := inChunk.Compressed() + inChunk := NewChunk(uncompressed) + compressed, _ := Compressor{}.toStorage(uncompressed) cID := inChunk.ID() // Server @@ -62,7 +62,7 @@ func TestProtocol(t *testing.T) { if err != nil { t.Fatal(err) } - b, _ := chunk.Uncompressed() + b, _ := chunk.Data() if !bytes.Equal(b, uncompressed) { t.Fatal("chunk data doesn't match expected") } diff --git a/protocolserver.go b/protocolserver.go index 3d5f5c6..7416175 100644 --- a/protocolserver.go +++ b/protocolserver.go @@ -61,7 +61,11 @@ func (s *ProtocolServer) Serve(ctx context.Context) error { } return errors.Wrap(err, "unable to read chunk from store") } - b, err := chunk.Compressed() + b, err := chunk.Data() + if err != nil { + return err + } + b, err = Compressor{}.toStorage(b) if err != nil { return err } diff --git a/protocolserver_test.go b/protocolserver_test.go index 885a6b3..c663db8 100644 --- a/protocolserver_test.go +++ b/protocolserver_test.go @@ -15,14 +15,11 @@ func TestProtocolServer(t *testing.T) { // Test data uncompressed := []byte{4, 3, 2, 1} - chunkIn := NewChunkFromUncompressed(uncompressed) - compressed, _ := chunkIn.Compressed() + chunkIn := NewChunk(uncompressed) id := chunkIn.ID() - store := &TestStore{ - Chunks: map[ChunkID][]byte{ - id: compressed, - }, - } + store := &TestStore{} + store.StoreChunk(chunkIn) + ps := NewProtocolServer(r2, w1, store) go ps.Serve(context.Background()) @@ -41,7 +38,7 @@ func TestProtocolServer(t *testing.T) { if err != nil { t.Fatal(err) } - b, _ := chunk.Uncompressed() + b, _ := chunk.Data() if !bytes.Equal(b, uncompressed) { t.Fatal("chunk data doesn't match expected") } @@ -49,6 +46,6 @@ func TestProtocolServer(t *testing.T) { // This one's missing _, err = server.RequestChunk(ChunkID{0}) if _, ok := err.(ChunkMissing); !ok { - t.Fatal("expectec ChunkMissing error, got:", err) + t.Fatal("expected ChunkMissing error, got:", err) } } diff --git a/readseeker.go b/readseeker.go index bf62a90..b1d5064 100644 --- a/readseeker.go +++ b/readseeker.go @@ -100,7 +100,7 @@ func (ip *IndexPos) loadChunk() error { if err != nil { return err } - b, err := chunk.Uncompressed() + b, err := chunk.Data() if err != nil { return err } diff --git a/remotehttp.go b/remotehttp.go index 9885aba..4c46b69 100644 --- a/remotehttp.go +++ b/remotehttp.go @@ -22,9 +22,10 @@ var _ WriteStore = &RemoteHTTP{} // RemoteHTTPBase is the base object for a remote, HTTP-based chunk or index stores. type RemoteHTTPBase struct { - location *url.URL - client *http.Client - opt StoreOptions + location *url.URL + client *http.Client + opt StoreOptions + converters Converters } // RemoteHTTP is a remote casync store accessed via HTTP. @@ -88,7 +89,7 @@ func NewRemoteHTTPStoreBase(location *url.URL, opt StoreOptions) (*RemoteHTTPBas } client := &http.Client{Transport: tr, Timeout: timeout} - return &RemoteHTTPBase{location: location, client: client, opt: opt}, nil + return &RemoteHTTPBase{location: location, client: client, opt: opt, converters: opt.converters()}, nil } func (r *RemoteHTTPBase) String() string { @@ -214,10 +215,7 @@ func (r *RemoteHTTP) GetChunk(id ChunkID) (*Chunk, error) { if err != nil { return nil, err } - if r.opt.Uncompressed { - return NewChunkWithID(id, b, nil, r.opt.SkipVerify) - } - return NewChunkWithID(id, nil, b, r.opt.SkipVerify) + return NewChunkFromStorage(id, b, r.converters, r.opt.SkipVerify) } // HasChunk returns true if the chunk is in the store @@ -242,15 +240,11 @@ func (r *RemoteHTTP) HasChunk(id ChunkID) (bool, error) { // StoreChunk adds a new chunk to the store func (r *RemoteHTTP) StoreChunk(chunk *Chunk) error { p := r.nameFromID(chunk.ID()) - var ( - b []byte - err error - ) - if r.opt.Uncompressed { - b, err = chunk.Uncompressed() - } else { - b, err = chunk.Compressed() + b, err := chunk.Data() + if err != nil { + return err } + b, err = r.converters.toStorage(b) if err != nil { return err } diff --git a/remotehttp_test.go b/remotehttp_test.go index beda9b7..137d443 100644 --- a/remotehttp_test.go +++ b/remotehttp_test.go @@ -201,7 +201,7 @@ func TestGetChunk(t *testing.T) { content, err := s.GetChunk(test.chunkId) content_string := "" if content != nil { - uncompressedContent, _ := content.Uncompressed() + uncompressedContent, _ := content.Data() content_string = string(uncompressedContent) } if (content_string != test.content) || ((err != nil) != test.hasError) || (attemptCount != test.attemptCount) { @@ -287,7 +287,7 @@ func TestPutChunk(t *testing.T) { attemptCount = 0 writtenContent = nil - chunk, _ := NewChunkWithID(test.chunkId, []byte(test.content), nil, true) + chunk, _ := NewChunkWithID(test.chunkId, []byte(test.content), true) err = s.StoreChunk(chunk) writtenContentString := "" if writtenContent != nil { diff --git a/s3.go b/s3.go index 65d4c03..e816612 100644 --- a/s3.go +++ b/s3.go @@ -17,11 +17,12 @@ var _ WriteStore = S3Store{} // S3StoreBase is the base object for all chunk and index stores with S3 backing type S3StoreBase struct { - Location string - client *minio.Client - bucket string - prefix string - opt StoreOptions + Location string + client *minio.Client + bucket string + prefix string + opt StoreOptions + converters Converters } // S3Store is a read-write store with S3 backing @@ -32,7 +33,7 @@ type S3Store struct { // NewS3StoreBase initializes a base object used for chunk or index stores backed by S3. func NewS3StoreBase(u *url.URL, s3Creds *credentials.Credentials, region string, opt StoreOptions, lookupType minio.BucketLookupType) (S3StoreBase, error) { var err error - s := S3StoreBase{Location: u.String(), opt: opt} + s := S3StoreBase{Location: u.String(), opt: opt, converters: opt.converters()} if !strings.HasPrefix(u.Scheme, "s3+http") { return s, fmt.Errorf("invalid scheme '%s', expected 's3+http' or 's3+https'", u.Scheme) } @@ -114,25 +115,18 @@ retry: if err != nil { return nil, err } - if s.opt.Uncompressed { - return NewChunkWithID(id, b, nil, s.opt.SkipVerify) - } - return NewChunkWithID(id, nil, b, s.opt.SkipVerify) + return NewChunkFromStorage(id, b, s.converters, s.opt.SkipVerify) } // StoreChunk adds a new chunk to the store func (s S3Store) StoreChunk(chunk *Chunk) error { contentType := "application/zstd" name := s.nameFromID(chunk.ID()) - var ( - b []byte - err error - ) - if s.opt.Uncompressed { - b, err = chunk.Uncompressed() - } else { - b, err = chunk.Compressed() + b, err := chunk.Data() + if err != nil { + return err } + b, err = s.converters.toStorage(b) if err != nil { return err } diff --git a/selfseed_test.go b/selfseed_test.go index c84c8e0..55eed09 100644 --- a/selfseed_test.go +++ b/selfseed_test.go @@ -34,7 +34,7 @@ func TestSelfSeed(t *testing.T) { for i := 0; i < numChunks; i++ { b := make([]byte, size) rand.Read(b) - chunk := NewChunkFromUncompressed(b) + chunk := NewChunk(b) if err = s.StoreChunk(chunk); err != nil { t.Fatal(err) } diff --git a/sftp.go b/sftp.go index a0373d0..f27522c 100644 --- a/sftp.go +++ b/sftp.go @@ -32,9 +32,10 @@ type SFTPStoreBase struct { // SFTPStore is a chunk store that uses SFTP over SSH. type SFTPStore struct { - pool chan *SFTPStoreBase - location *url.URL - n int + pool chan *SFTPStoreBase + location *url.URL + n int + converters Converters } // Creates a base sftp client @@ -142,7 +143,7 @@ func (s *SFTPStoreBase) nameFromID(id ChunkID) string { // NewSFTPStore initializes a chunk store using SFTP over SSH. func NewSFTPStore(location *url.URL, opt StoreOptions) (*SFTPStore, error) { - s := &SFTPStore{make(chan *SFTPStoreBase, opt.N), location, opt.N} + s := &SFTPStore{make(chan *SFTPStoreBase, opt.N), location, opt.N, opt.converters()} for i := 0; i < opt.N; i++ { c, err := newSFTPStoreBase(location, opt) if err != nil { @@ -170,10 +171,7 @@ func (s *SFTPStore) GetChunk(id ChunkID) (*Chunk, error) { if err != nil { return nil, errors.Wrapf(err, "unable to read from %s", name) } - if c.opt.Uncompressed { - return NewChunkWithID(id, b, nil, c.opt.SkipVerify) - } - return NewChunkWithID(id, nil, b, c.opt.SkipVerify) + return NewChunkFromStorage(id, b, s.converters, c.opt.SkipVerify) } // RemoveChunk deletes a chunk, typically an invalid one, from the filesystem. @@ -193,18 +191,15 @@ func (s *SFTPStore) StoreChunk(chunk *Chunk) error { c := <-s.pool defer func() { s.pool <- c }() name := c.nameFromID(chunk.ID()) - var ( - b []byte - err error - ) - if c.opt.Uncompressed { - b, err = chunk.Uncompressed() - } else { - b, err = chunk.Compressed() + b, err := chunk.Data() + if err != nil { + return err } + b, err = s.converters.toStorage(b) if err != nil { return err } + return c.StoreObject(name, bytes.NewReader(b)) } diff --git a/sparse-file.go b/sparse-file.go index 18297b1..464bc9c 100644 --- a/sparse-file.go +++ b/sparse-file.go @@ -237,7 +237,7 @@ func (l *sparseFileLoader) loadChunk(i int) error { loadErr = err return } - b, err := c.Uncompressed() + b, err := c.Data() if err != nil { loadErr = err return diff --git a/store.go b/store.go index 8c98ec7..ac7c464 100644 --- a/store.go +++ b/store.go @@ -76,7 +76,7 @@ type StoreOptions struct { // Default: 1 second ErrorRetryBaseInterval time.Duration `json:"error-retry-base-interval,omitempty"` - // If SkipVerify is true, this store will not verfiy the data it reads and serves up. This is + // If SkipVerify is true, this store will not verify the data it reads and serves up. This is // helpful when a store is merely a proxy and the data will pass through additional stores // before being used. Verifying the checksum of a chunk requires it be uncompressed, so if // a compressed chunkstore is being proxied, all chunks would have to be decompressed first. @@ -87,3 +87,16 @@ type StoreOptions struct { // Store and read chunks uncompressed, without chunk file extension Uncompressed bool `json:"uncompressed"` } + +// Returns data converters that convert between plain and storage-format. Each layer +// represents a modification such as compression or encryption and is applied in order +// depending the direction of data. If data is written to storage, the layer's toStorage +// method is called in the order they are returned. If data is read, the fromStorage +// method is called in reverse order. +func (o StoreOptions) converters() []converter { + var m []converter + if !o.Uncompressed { + m = append(m, Compressor{}) + } + return m +} diff --git a/store_test.go b/store_test.go index 5f91fda..76951db 100644 --- a/store_test.go +++ b/store_test.go @@ -19,7 +19,7 @@ func (s *TestStore) GetChunk(id ChunkID) (*Chunk, error) { if !ok { return nil, ChunkMissing{id} } - return &Chunk{compressed: b}, nil + return NewChunk(b), nil } func (s *TestStore) HasChunk(id ChunkID) (bool, error) { @@ -37,7 +37,8 @@ func (s *TestStore) StoreChunk(chunk *Chunk) error { if s.Chunks == nil { s.Chunks = make(map[ChunkID][]byte) } - s.Chunks[chunk.ID()] = chunk.compressed + b, _ := chunk.Data() + s.Chunks[chunk.ID()] = b return nil } diff --git a/untar.go b/untar.go index 9fc12e5..c94d52b 100644 --- a/untar.go +++ b/untar.go @@ -82,7 +82,7 @@ func UnTarIndex(ctx context.Context, fs FilesystemWriter, index Index, s Store, close(r.data) return err } - b, err := chunk.Uncompressed() + b, err := chunk.Data() if err != nil { close(r.data) return err diff --git a/writededupqueue_test.go b/writededupqueue_test.go index ea67d22..3cd5fdb 100644 --- a/writededupqueue_test.go +++ b/writededupqueue_test.go @@ -8,7 +8,7 @@ import ( // Test read access before write access to ensure a failing read doesn't // impact the write operation (should use separate queues). func TestWriteDedupQueueParallelReadWrite(t *testing.T) { - c := NewChunkFromUncompressed([]byte{1, 2, 3, 4}) + c := NewChunk([]byte{1, 2, 3, 4}) sleeping := make(chan struct{}) store := &TestStore{ // Slow GetChunk operation