restic/archiver_test.go

262 lines
6.1 KiB
Go

package restic_test
import (
"bytes"
"flag"
"io"
"testing"
"github.com/restic/restic"
"github.com/restic/restic/backend"
"github.com/restic/restic/chunker"
"github.com/restic/restic/server"
. "github.com/restic/restic/test"
)
var benchArchiveDirectory = flag.String("test.benchdir", ".", "benchmark archiving a real directory (default: .)")
var testPol = chunker.Pol(0x3DA3358B4DC173)
const bufSize = chunker.MiB
type Rdr interface {
io.ReadSeeker
io.ReaderAt
}
func benchmarkChunkEncrypt(b testing.TB, buf, buf2 []byte, rd Rdr, key *server.Key) {
ch := restic.GetChunker("BenchmarkChunkEncrypt")
rd.Seek(0, 0)
ch.Reset(rd, testPol)
for {
chunk, err := ch.Next()
if err == io.EOF {
break
}
OK(b, err)
// reduce length of buf
buf = buf[:chunk.Length]
n, err := io.ReadFull(chunk.Reader(rd), buf)
OK(b, err)
Assert(b, uint(n) == chunk.Length, "invalid length: got %d, expected %d", n, chunk.Length)
_, err = key.Encrypt(buf2, buf)
OK(b, err)
}
restic.FreeChunker("BenchmarkChunkEncrypt", ch)
}
func BenchmarkChunkEncrypt(b *testing.B) {
data := Random(23, 10<<20) // 10MiB
rd := bytes.NewReader(data)
be := SetupBackend(b)
defer TeardownBackend(b, be)
key := SetupKey(b, be, "geheim")
buf := restic.GetChunkBuf("BenchmarkChunkEncrypt")
buf2 := restic.GetChunkBuf("BenchmarkChunkEncrypt")
b.ResetTimer()
b.SetBytes(int64(len(data)))
for i := 0; i < b.N; i++ {
benchmarkChunkEncrypt(b, buf, buf2, rd, key)
}
restic.FreeChunkBuf("BenchmarkChunkEncrypt", buf)
restic.FreeChunkBuf("BenchmarkChunkEncrypt", buf2)
}
func benchmarkChunkEncryptP(b *testing.PB, buf []byte, rd Rdr, key *server.Key) {
ch := restic.GetChunker("BenchmarkChunkEncryptP")
rd.Seek(0, 0)
ch.Reset(rd, testPol)
for {
chunk, err := ch.Next()
if err == io.EOF {
break
}
// reduce length of chunkBuf
buf = buf[:chunk.Length]
io.ReadFull(chunk.Reader(rd), buf)
key.Encrypt(buf, buf)
}
restic.FreeChunker("BenchmarkChunkEncryptP", ch)
}
func BenchmarkChunkEncryptParallel(b *testing.B) {
be := SetupBackend(b)
defer TeardownBackend(b, be)
key := SetupKey(b, be, "geheim")
data := Random(23, 10<<20) // 10MiB
buf := restic.GetChunkBuf("BenchmarkChunkEncryptParallel")
b.ResetTimer()
b.SetBytes(int64(len(data)))
b.RunParallel(func(pb *testing.PB) {
for pb.Next() {
rd := bytes.NewReader(data)
benchmarkChunkEncryptP(pb, buf, rd, key)
}
})
restic.FreeChunkBuf("BenchmarkChunkEncryptParallel", buf)
}
func BenchmarkArchiveDirectory(b *testing.B) {
if *benchArchiveDirectory == "" {
b.Skip("benchdir not set, skipping BenchmarkArchiveDirectory")
}
server := SetupBackend(b)
defer TeardownBackend(b, server)
key := SetupKey(b, server, "geheim")
server.SetKey(key)
arch, err := restic.NewArchiver(server)
OK(b, err)
_, id, err := arch.Snapshot(nil, []string{*benchArchiveDirectory}, nil)
b.Logf("snapshot archived as %v", id)
}
func countBlobs(t testing.TB, server *server.Server) (trees int, data int) {
return server.Count(backend.Tree), server.Count(backend.Data)
}
func archiveWithPreload(t testing.TB) {
if *benchArchiveDirectory == "" {
t.Skip("benchdir not set, skipping TestArchiverPreload")
}
server := SetupBackend(t)
defer TeardownBackend(t, server)
key := SetupKey(t, server, "geheim")
server.SetKey(key)
// archive a few files
sn := SnapshotDir(t, server, *benchArchiveDirectory, nil)
t.Logf("archived snapshot %v", sn.ID().Str())
// get archive stats
beforeTrees, beforeData := countBlobs(t, server)
t.Logf("found %v trees, %v data blobs", beforeTrees, beforeData)
// archive the same files again, without parent snapshot
sn2 := SnapshotDir(t, server, *benchArchiveDirectory, nil)
t.Logf("archived snapshot %v", sn2.ID().Str())
// get archive stats
afterTrees2, afterData2 := countBlobs(t, server)
t.Logf("found %v trees, %v data blobs", afterTrees2, afterData2)
// if there are more blobs, something is wrong
if afterData2 > beforeData {
t.Fatalf("TestArchiverPreload: too many data blobs in repository: before %d, after %d",
beforeData, afterData2)
}
// archive the same files again, with a parent snapshot
sn3 := SnapshotDir(t, server, *benchArchiveDirectory, sn2.ID())
t.Logf("archived snapshot %v, parent %v", sn3.ID().Str(), sn2.ID().Str())
// get archive stats
afterTrees3, afterData3 := countBlobs(t, server)
t.Logf("found %v trees, %v data blobs", afterTrees3, afterData3)
// if there are more blobs, something is wrong
if afterData3 > beforeData {
t.Fatalf("TestArchiverPreload: too many data blobs in repository: before %d, after %d",
beforeData, afterData3)
}
}
func TestArchivePreload(t *testing.T) {
archiveWithPreload(t)
}
func BenchmarkPreload(t *testing.B) {
if *benchArchiveDirectory == "" {
t.Skip("benchdir not set, skipping TestArchiverPreload")
}
server := SetupBackend(t)
defer TeardownBackend(t, server)
key := SetupKey(t, server, "geheim")
server.SetKey(key)
// archive a few files
arch, err := restic.NewArchiver(server)
OK(t, err)
sn, _, err := arch.Snapshot(nil, []string{*benchArchiveDirectory}, nil)
OK(t, err)
t.Logf("archived snapshot %v", sn.ID())
// start benchmark
t.ResetTimer()
for i := 0; i < t.N; i++ {
// create new archiver and preload
arch2, err := restic.NewArchiver(server)
OK(t, err)
OK(t, arch2.Preload())
}
}
func BenchmarkLoadTree(t *testing.B) {
if *benchArchiveDirectory == "" {
t.Skip("benchdir not set, skipping TestArchiverPreload")
}
s := SetupBackend(t)
defer TeardownBackend(t, s)
key := SetupKey(t, s, "geheim")
s.SetKey(key)
// archive a few files
arch, err := restic.NewArchiver(s)
OK(t, err)
sn, _, err := arch.Snapshot(nil, []string{*benchArchiveDirectory}, nil)
OK(t, err)
t.Logf("archived snapshot %v", sn.ID())
list := make([]backend.ID, 0, 10)
done := make(chan struct{})
for name := range s.List(backend.Tree, done) {
id, err := backend.ParseID(name)
if err != nil {
t.Logf("invalid id for tree %v", name)
continue
}
list = append(list, id)
if len(list) == cap(list) {
close(done)
break
}
}
// start benchmark
t.ResetTimer()
for i := 0; i < t.N; i++ {
for _, id := range list {
_, err := restic.LoadTree(s, server.Blob{Storage: id})
OK(t, err)
}
}
}