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Merge pull request #2345 from OffchainLabs/gligneul/split-db-snapshot
[NIT-2505] Download DB snapshot that is split between multiple files
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| // Copyright 2021-2022, Offchain Labs, Inc. | ||
| // For license information, see https://github.com/nitro/blob/master/LICENSE | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "crypto/sha256" | ||
| "encoding/hex" | ||
| "errors" | ||
| "fmt" | ||
| "net" | ||
| "net/http" | ||
| "os" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/offchainlabs/nitro/cmd/conf" | ||
| "github.com/offchainlabs/nitro/util/testhelpers" | ||
| ) | ||
|
|
||
| func TestDownloadInit(t *testing.T) { | ||
| const ( | ||
| archiveName = "random_data.tar.gz" | ||
| dataSize = 1024 * 1024 | ||
| filePerm = 0600 | ||
| ) | ||
|
|
||
| // Create archive with random data | ||
| serverDir := t.TempDir() | ||
| data := testhelpers.RandomSlice(dataSize) | ||
| checksumBytes := sha256.Sum256(data) | ||
| checksum := hex.EncodeToString(checksumBytes[:]) | ||
|
|
||
| // Write archive file | ||
| archiveFile := fmt.Sprintf("%s/%s", serverDir, archiveName) | ||
| err := os.WriteFile(archiveFile, data, filePerm) | ||
| Require(t, err, "failed to write archive") | ||
|
|
||
| // Write checksum file | ||
| checksumFile := archiveFile + ".sha256" | ||
| err = os.WriteFile(checksumFile, []byte(checksum), filePerm) | ||
| Require(t, err, "failed to write checksum") | ||
|
|
||
| // Start HTTP server | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
| addr := startFileServer(t, ctx, serverDir) | ||
|
|
||
| // Download file | ||
| initConfig := conf.InitConfigDefault | ||
| initConfig.Url = fmt.Sprintf("http://%s/%s", addr, archiveName) | ||
| initConfig.DownloadPath = t.TempDir() | ||
| receivedArchive, err := downloadInit(ctx, &initConfig) | ||
| Require(t, err, "failed to download") | ||
|
|
||
| // Check archive contents | ||
| receivedData, err := os.ReadFile(receivedArchive) | ||
| Require(t, err, "failed to read received archive") | ||
| if !bytes.Equal(receivedData, data) { | ||
| t.Error("downloaded archive is different from generated one") | ||
| } | ||
| } | ||
|
|
||
| func TestDownloadInitInParts(t *testing.T) { | ||
| const ( | ||
| archiveName = "random_data.tar.gz" | ||
| numParts = 3 | ||
| partSize = 1024 * 1024 | ||
| dataSize = numParts * partSize | ||
| filePerm = 0600 | ||
| ) | ||
|
|
||
| // Create parts with random data | ||
| serverDir := t.TempDir() | ||
| data := testhelpers.RandomSlice(dataSize) | ||
| for i := 0; i < numParts; i++ { | ||
| // Create part and checksum | ||
| partData := data[partSize*i : partSize*(i+1)] | ||
| checksumBytes := sha256.Sum256(partData) | ||
| checksum := hex.EncodeToString(checksumBytes[:]) | ||
| // Write part file | ||
| partFile := fmt.Sprintf("%s/%s.part%d", serverDir, archiveName, i) | ||
| err := os.WriteFile(partFile, partData, filePerm) | ||
| Require(t, err, "failed to write part") | ||
| // Write checksum file | ||
| checksumFile := partFile + ".sha256" | ||
| err = os.WriteFile(checksumFile, []byte(checksum), filePerm) | ||
| Require(t, err, "failed to write checksum") | ||
| } | ||
|
|
||
| // Start HTTP server | ||
| ctx, cancel := context.WithCancel(context.Background()) | ||
| defer cancel() | ||
| addr := startFileServer(t, ctx, serverDir) | ||
|
|
||
| // Download file | ||
| initConfig := conf.InitConfigDefault | ||
| initConfig.Url = fmt.Sprintf("http://%s/%s", addr, archiveName) | ||
| initConfig.DownloadPath = t.TempDir() | ||
| receivedArchive, err := downloadInit(ctx, &initConfig) | ||
| Require(t, err, "failed to download") | ||
|
|
||
| // check database contents | ||
| receivedData, err := os.ReadFile(receivedArchive) | ||
| Require(t, err, "failed to read received archive") | ||
| if !bytes.Equal(receivedData, data) { | ||
| t.Error("downloaded archive is different from generated one") | ||
| } | ||
|
|
||
| // Check if the function deleted the temporary files | ||
| entries, err := os.ReadDir(initConfig.DownloadPath) | ||
| Require(t, err, "failed to read temp dir") | ||
| if len(entries) != 1 { | ||
| t.Error("download function did not delete temp files") | ||
| } | ||
| } | ||
|
|
||
| func startFileServer(t *testing.T, ctx context.Context, dir string) string { | ||
| t.Helper() | ||
| ln, err := net.Listen("tcp", "127.0.0.1:0") | ||
| Require(t, err, "failed to listen") | ||
| addr := ln.Addr().String() | ||
| server := &http.Server{ | ||
| Addr: addr, | ||
| Handler: http.FileServer(http.Dir(dir)), | ||
| ReadHeaderTimeout: time.Second, | ||
| } | ||
| go func() { | ||
| err := server.Serve(ln) | ||
| if err != nil && !errors.Is(err, http.ErrServerClosed) { | ||
| t.Error("failed to shutdown server") | ||
| } | ||
| }() | ||
| go func() { | ||
| <-ctx.Done() | ||
| err := server.Shutdown(ctx) | ||
| Require(t, err, "failed to shutdown server") | ||
| }() | ||
| return addr | ||
| } |