summaryrefslogtreecommitdiffhomepage
path: root/pkg/state/statefile
diff options
context:
space:
mode:
Diffstat (limited to 'pkg/state/statefile')
-rw-r--r--pkg/state/statefile/BUILD21
-rwxr-xr-xpkg/state/statefile/statefile_state_autogen.go3
-rw-r--r--pkg/state/statefile/statefile_test.go290
3 files changed, 3 insertions, 311 deletions
diff --git a/pkg/state/statefile/BUILD b/pkg/state/statefile/BUILD
deleted file mode 100644
index e7581c09b..000000000
--- a/pkg/state/statefile/BUILD
+++ /dev/null
@@ -1,21 +0,0 @@
-load("//tools:defs.bzl", "go_library", "go_test")
-
-package(licenses = ["notice"])
-
-go_library(
- name = "statefile",
- srcs = ["statefile.go"],
- visibility = ["//:sandbox"],
- deps = [
- "//pkg/binary",
- "//pkg/compressio",
- ],
-)
-
-go_test(
- name = "statefile_test",
- size = "small",
- srcs = ["statefile_test.go"],
- library = ":statefile",
- deps = ["//pkg/compressio"],
-)
diff --git a/pkg/state/statefile/statefile_state_autogen.go b/pkg/state/statefile/statefile_state_autogen.go
new file mode 100755
index 000000000..a2cdaa3f1
--- /dev/null
+++ b/pkg/state/statefile/statefile_state_autogen.go
@@ -0,0 +1,3 @@
+// automatically generated by stateify.
+
+package statefile
diff --git a/pkg/state/statefile/statefile_test.go b/pkg/state/statefile/statefile_test.go
deleted file mode 100644
index 0b470fdec..000000000
--- a/pkg/state/statefile/statefile_test.go
+++ /dev/null
@@ -1,290 +0,0 @@
-// Copyright 2018 The gVisor Authors.
-//
-// Licensed under the Apache License, Version 2.0 (the "License");
-// you may not use this file except in compliance with the License.
-// You may obtain a copy of the License at
-//
-// http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS,
-// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-// See the License for the specific language governing permissions and
-// limitations under the License.
-
-package statefile
-
-import (
- "bytes"
- crand "crypto/rand"
- "encoding/base64"
- "io"
- "math/rand"
- "runtime"
- "testing"
- "time"
-
- "gvisor.dev/gvisor/pkg/compressio"
-)
-
-func randomKey() ([]byte, error) {
- r := make([]byte, base64.RawStdEncoding.DecodedLen(keySize))
- if _, err := io.ReadFull(crand.Reader, r); err != nil {
- return nil, err
- }
- key := make([]byte, keySize)
- base64.RawStdEncoding.Encode(key, r)
- return key, nil
-}
-
-type testCase struct {
- name string
- data []byte
- metadata map[string]string
-}
-
-func TestStatefile(t *testing.T) {
- rand.Seed(time.Now().Unix())
-
- cases := []testCase{
- // Various data sizes.
- {"nil", nil, nil},
- {"empty", []byte(""), nil},
- {"some", []byte("_"), nil},
- {"one", []byte("0"), nil},
- {"two", []byte("01"), nil},
- {"three", []byte("012"), nil},
- {"four", []byte("0123"), nil},
- {"five", []byte("01234"), nil},
- {"six", []byte("012356"), nil},
- {"seven", []byte("0123567"), nil},
- {"eight", []byte("01235678"), nil},
-
- // Make sure we have one longer than the hash length.
- {"longer than hash", []byte("012356asdjflkasjlk3jlk23j4lkjaso0d789f0aujw3lkjlkxsdf78asdful2kj3ljka78"), nil},
-
- // Make sure we have one longer than the chunk size.
- {"chunks", make([]byte, 3*compressionChunkSize), nil},
- {"large", make([]byte, 30*compressionChunkSize), nil},
-
- // Different metadata.
- {"one metadata", []byte("data"), map[string]string{"foo": "bar"}},
- {"two metadata", []byte("data"), map[string]string{"foo": "bar", "one": "two"}},
- }
-
- for _, c := range cases {
- // Generate a key.
- integrityKey, err := randomKey()
- if err != nil {
- t.Errorf("can't generate key: got %v, excepted nil", err)
- continue
- }
-
- t.Run(c.name, func(t *testing.T) {
- for _, key := range [][]byte{nil, integrityKey} {
- t.Run("key="+string(key), func(t *testing.T) {
- // Encoding happens via a buffer.
- var bufEncoded bytes.Buffer
- var bufDecoded bytes.Buffer
-
- // Do all the writing.
- w, err := NewWriter(&bufEncoded, key, c.metadata)
- if err != nil {
- t.Fatalf("error creating writer: got %v, expected nil", err)
- }
- if _, err := io.Copy(w, bytes.NewBuffer(c.data)); err != nil {
- t.Fatalf("error during write: got %v, expected nil", err)
- }
-
- // Finish the sum.
- if err := w.Close(); err != nil {
- t.Fatalf("error during close: got %v, expected nil", err)
- }
-
- t.Logf("original data: %d bytes, encoded: %d bytes.",
- len(c.data), len(bufEncoded.Bytes()))
-
- // Do all the reading.
- r, metadata, err := NewReader(bytes.NewReader(bufEncoded.Bytes()), key)
- if err != nil {
- t.Fatalf("error creating reader: got %v, expected nil", err)
- }
- if _, err := io.Copy(&bufDecoded, r); err != nil {
- t.Fatalf("error during read: got %v, expected nil", err)
- }
-
- // Check that the data matches.
- if !bytes.Equal(c.data, bufDecoded.Bytes()) {
- t.Fatalf("data didn't match (%d vs %d bytes)", len(bufDecoded.Bytes()), len(c.data))
- }
-
- // Check that the metadata matches.
- for k, v := range c.metadata {
- nv, ok := metadata[k]
- if !ok {
- t.Fatalf("missing metadata: %s", k)
- }
- if v != nv {
- t.Fatalf("mismatched metdata for %s: got %s, expected %s", k, nv, v)
- }
- }
-
- // Change the data and verify that it fails.
- if key != nil {
- b := append([]byte(nil), bufEncoded.Bytes()...)
- b[rand.Intn(len(b))]++
- bufDecoded.Reset()
- r, _, err = NewReader(bytes.NewReader(b), key)
- if err == nil {
- _, err = io.Copy(&bufDecoded, r)
- }
- if err == nil {
- t.Error("got no error: expected error on data corruption")
- }
- }
-
- // Change the key and verify that it fails.
- newKey := integrityKey
- if len(key) > 0 {
- newKey = append([]byte{}, key...)
- newKey[rand.Intn(len(newKey))]++
- }
- bufDecoded.Reset()
- r, _, err = NewReader(bytes.NewReader(bufEncoded.Bytes()), newKey)
- if err == nil {
- _, err = io.Copy(&bufDecoded, r)
- }
- if err != compressio.ErrHashMismatch {
- t.Errorf("got error: %v, expected ErrHashMismatch on key mismatch", err)
- }
- })
- }
- })
- }
-}
-
-const benchmarkDataSize = 100 * 1024 * 1024
-
-func benchmark(b *testing.B, size int, write bool, compressible bool) {
- b.StopTimer()
- b.SetBytes(benchmarkDataSize)
-
- // Generate source data.
- var source []byte
- if compressible {
- // For compressible data, we use essentially all zeros.
- source = make([]byte, benchmarkDataSize)
- } else {
- // For non-compressible data, we use random base64 data (to
- // make it marginally compressible, a ratio of 75%).
- var sourceBuf bytes.Buffer
- bufW := base64.NewEncoder(base64.RawStdEncoding, &sourceBuf)
- bufR := rand.New(rand.NewSource(0))
- if _, err := io.CopyN(bufW, bufR, benchmarkDataSize); err != nil {
- b.Fatalf("unable to seed random data: %v", err)
- }
- source = sourceBuf.Bytes()
- }
-
- // Generate a random key for integrity check.
- key, err := randomKey()
- if err != nil {
- b.Fatalf("error generating key: %v", err)
- }
-
- // Define our benchmark functions. Prior to running the readState
- // function here, you must execute the writeState function at least
- // once (done below).
- var stateBuf bytes.Buffer
- writeState := func() {
- stateBuf.Reset()
- w, err := NewWriter(&stateBuf, key, nil)
- if err != nil {
- b.Fatalf("error creating writer: %v", err)
- }
- for done := 0; done < len(source); {
- chunk := size // limit size.
- if done+chunk > len(source) {
- chunk = len(source) - done
- }
- n, err := w.Write(source[done : done+chunk])
- done += n
- if n == 0 && err != nil {
- b.Fatalf("error during write: %v", err)
- }
- }
- if err := w.Close(); err != nil {
- b.Fatalf("error closing writer: %v", err)
- }
- }
- readState := func() {
- tmpBuf := bytes.NewBuffer(stateBuf.Bytes())
- r, _, err := NewReader(tmpBuf, key)
- if err != nil {
- b.Fatalf("error creating reader: %v", err)
- }
- for done := 0; done < len(source); {
- chunk := size // limit size.
- if done+chunk > len(source) {
- chunk = len(source) - done
- }
- n, err := r.Read(source[done : done+chunk])
- done += n
- if n == 0 && err != nil {
- b.Fatalf("error during read: %v", err)
- }
- }
- }
- // Generate the state once without timing to ensure that buffers have
- // been appropriately allocated.
- writeState()
- if write {
- b.StartTimer()
- for i := 0; i < b.N; i++ {
- writeState()
- }
- b.StopTimer()
- } else {
- b.StartTimer()
- for i := 0; i < b.N; i++ {
- readState()
- }
- b.StopTimer()
- }
-}
-
-func BenchmarkWrite4KCompressible(b *testing.B) {
- benchmark(b, 4096, true, true)
-}
-
-func BenchmarkWrite4KNoncompressible(b *testing.B) {
- benchmark(b, 4096, true, false)
-}
-
-func BenchmarkWrite1MCompressible(b *testing.B) {
- benchmark(b, 1024*1024, true, true)
-}
-
-func BenchmarkWrite1MNoncompressible(b *testing.B) {
- benchmark(b, 1024*1024, true, false)
-}
-
-func BenchmarkRead4KCompressible(b *testing.B) {
- benchmark(b, 4096, false, true)
-}
-
-func BenchmarkRead4KNoncompressible(b *testing.B) {
- benchmark(b, 4096, false, false)
-}
-
-func BenchmarkRead1MCompressible(b *testing.B) {
- benchmark(b, 1024*1024, false, true)
-}
-
-func BenchmarkRead1MNoncompressible(b *testing.B) {
- benchmark(b, 1024*1024, false, false)
-}
-
-func init() {
- runtime.GOMAXPROCS(runtime.NumCPU())
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 22:01:49 +0000