435 lines
10 KiB
Go
435 lines
10 KiB
Go
package layer
|
|
|
|
import (
|
|
"bytes"
|
|
"compress/gzip"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"runtime"
|
|
"testing"
|
|
|
|
"github.com/docker/docker/daemon/graphdriver"
|
|
"github.com/docker/docker/pkg/archive"
|
|
"github.com/docker/docker/pkg/stringid"
|
|
"github.com/vbatts/tar-split/tar/asm"
|
|
"github.com/vbatts/tar-split/tar/storage"
|
|
)
|
|
|
|
func writeTarSplitFile(name string, tarContent []byte) error {
|
|
f, err := os.OpenFile(name, os.O_TRUNC|os.O_CREATE|os.O_WRONLY, 0644)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
|
|
fz := gzip.NewWriter(f)
|
|
|
|
metaPacker := storage.NewJSONPacker(fz)
|
|
defer fz.Close()
|
|
|
|
rdr, err := asm.NewInputTarStream(bytes.NewReader(tarContent), metaPacker, nil)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if _, err := io.Copy(ioutil.Discard, rdr); err != nil {
|
|
return err
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func TestLayerMigration(t *testing.T) {
|
|
// TODO Windows: Figure out why this is failing
|
|
if runtime.GOOS == "windows" {
|
|
t.Skip("Failing on Windows")
|
|
}
|
|
td, err := ioutil.TempDir("", "migration-test-")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(td)
|
|
|
|
layer1Files := []FileApplier{
|
|
newTestFile("/root/.bashrc", []byte("# Boring configuration"), 0644),
|
|
newTestFile("/etc/profile", []byte("# Base configuration"), 0644),
|
|
}
|
|
|
|
layer2Files := []FileApplier{
|
|
newTestFile("/root/.bashrc", []byte("# Updated configuration"), 0644),
|
|
}
|
|
|
|
tar1, err := tarFromFiles(layer1Files...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tar2, err := tarFromFiles(layer2Files...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
graph, err := newVFSGraphDriver(filepath.Join(td, "graphdriver-"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
graphID1 := stringid.GenerateRandomID()
|
|
if err := graph.Create(graphID1, "", nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := graph.ApplyDiff(graphID1, "", bytes.NewReader(tar1)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tf1 := filepath.Join(td, "tar1.json.gz")
|
|
if err := writeTarSplitFile(tf1, tar1); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
fms, err := NewFSMetadataStore(filepath.Join(td, "layers"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
ls, err := NewStoreFromGraphDriver(fms, graph, runtime.GOOS)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
newTarDataPath := filepath.Join(td, ".migration-tardata")
|
|
diffID, size, err := ls.(*layerStore).ChecksumForGraphID(graphID1, "", tf1, newTarDataPath)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer1a, err := ls.(*layerStore).RegisterByGraphID(graphID1, "", diffID, newTarDataPath, size)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer1b, err := ls.Register(bytes.NewReader(tar1), "", Platform(runtime.GOOS))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
assertReferences(t, layer1a, layer1b)
|
|
// Attempt register, should be same
|
|
layer2a, err := ls.Register(bytes.NewReader(tar2), layer1a.ChainID(), Platform(runtime.GOOS))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
graphID2 := stringid.GenerateRandomID()
|
|
if err := graph.Create(graphID2, graphID1, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := graph.ApplyDiff(graphID2, graphID1, bytes.NewReader(tar2)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tf2 := filepath.Join(td, "tar2.json.gz")
|
|
if err := writeTarSplitFile(tf2, tar2); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
diffID, size, err = ls.(*layerStore).ChecksumForGraphID(graphID2, graphID1, tf2, newTarDataPath)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer2b, err := ls.(*layerStore).RegisterByGraphID(graphID2, layer1a.ChainID(), diffID, tf2, size)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
assertReferences(t, layer2a, layer2b)
|
|
|
|
if metadata, err := ls.Release(layer2a); err != nil {
|
|
t.Fatal(err)
|
|
} else if len(metadata) > 0 {
|
|
t.Fatalf("Unexpected layer removal after first release: %#v", metadata)
|
|
}
|
|
|
|
metadata, err := ls.Release(layer2b)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
assertMetadata(t, metadata, createMetadata(layer2a))
|
|
}
|
|
|
|
func tarFromFilesInGraph(graph graphdriver.Driver, graphID, parentID string, files ...FileApplier) ([]byte, error) {
|
|
t, err := tarFromFiles(files...)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if err := graph.Create(graphID, parentID, nil); err != nil {
|
|
return nil, err
|
|
}
|
|
if _, err := graph.ApplyDiff(graphID, parentID, bytes.NewReader(t)); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
ar, err := graph.Diff(graphID, parentID)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer ar.Close()
|
|
|
|
return ioutil.ReadAll(ar)
|
|
}
|
|
|
|
func TestLayerMigrationNoTarsplit(t *testing.T) {
|
|
// TODO Windows: Figure out why this is failing
|
|
if runtime.GOOS == "windows" {
|
|
t.Skip("Failing on Windows")
|
|
}
|
|
td, err := ioutil.TempDir("", "migration-test-")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer os.RemoveAll(td)
|
|
|
|
layer1Files := []FileApplier{
|
|
newTestFile("/root/.bashrc", []byte("# Boring configuration"), 0644),
|
|
newTestFile("/etc/profile", []byte("# Base configuration"), 0644),
|
|
}
|
|
|
|
layer2Files := []FileApplier{
|
|
newTestFile("/root/.bashrc", []byte("# Updated configuration"), 0644),
|
|
}
|
|
|
|
graph, err := newVFSGraphDriver(filepath.Join(td, "graphdriver-"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
graphID1 := stringid.GenerateRandomID()
|
|
graphID2 := stringid.GenerateRandomID()
|
|
|
|
tar1, err := tarFromFilesInGraph(graph, graphID1, "", layer1Files...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
tar2, err := tarFromFilesInGraph(graph, graphID2, graphID1, layer2Files...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
fms, err := NewFSMetadataStore(filepath.Join(td, "layers"))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
ls, err := NewStoreFromGraphDriver(fms, graph, runtime.GOOS)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
newTarDataPath := filepath.Join(td, ".migration-tardata")
|
|
diffID, size, err := ls.(*layerStore).ChecksumForGraphID(graphID1, "", "", newTarDataPath)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer1a, err := ls.(*layerStore).RegisterByGraphID(graphID1, "", diffID, newTarDataPath, size)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer1b, err := ls.Register(bytes.NewReader(tar1), "", Platform(runtime.GOOS))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
assertReferences(t, layer1a, layer1b)
|
|
|
|
// Attempt register, should be same
|
|
layer2a, err := ls.Register(bytes.NewReader(tar2), layer1a.ChainID(), Platform(runtime.GOOS))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
diffID, size, err = ls.(*layerStore).ChecksumForGraphID(graphID2, graphID1, "", newTarDataPath)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
layer2b, err := ls.(*layerStore).RegisterByGraphID(graphID2, layer1a.ChainID(), diffID, newTarDataPath, size)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
assertReferences(t, layer2a, layer2b)
|
|
|
|
if metadata, err := ls.Release(layer2a); err != nil {
|
|
t.Fatal(err)
|
|
} else if len(metadata) > 0 {
|
|
t.Fatalf("Unexpected layer removal after first release: %#v", metadata)
|
|
}
|
|
|
|
metadata, err := ls.Release(layer2b)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
assertMetadata(t, metadata, createMetadata(layer2a))
|
|
}
|
|
|
|
func TestMountMigration(t *testing.T) {
|
|
// TODO Windows: Figure out why this is failing (obvious - paths... needs porting)
|
|
if runtime.GOOS == "windows" {
|
|
t.Skip("Failing on Windows")
|
|
}
|
|
ls, _, cleanup := newTestStore(t)
|
|
defer cleanup()
|
|
|
|
baseFiles := []FileApplier{
|
|
newTestFile("/root/.bashrc", []byte("# Boring configuration"), 0644),
|
|
newTestFile("/etc/profile", []byte("# Base configuration"), 0644),
|
|
}
|
|
initFiles := []FileApplier{
|
|
newTestFile("/etc/hosts", []byte{}, 0644),
|
|
newTestFile("/etc/resolv.conf", []byte{}, 0644),
|
|
}
|
|
mountFiles := []FileApplier{
|
|
newTestFile("/etc/hosts", []byte("localhost 127.0.0.1"), 0644),
|
|
newTestFile("/root/.bashrc", []byte("# Updated configuration"), 0644),
|
|
newTestFile("/root/testfile1.txt", []byte("nothing valuable"), 0644),
|
|
}
|
|
|
|
initTar, err := tarFromFiles(initFiles...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
mountTar, err := tarFromFiles(mountFiles...)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
graph := ls.(*layerStore).driver
|
|
|
|
layer1, err := createLayer(ls, "", initWithFiles(baseFiles...))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
graphID1 := layer1.(*referencedCacheLayer).cacheID
|
|
|
|
containerID := stringid.GenerateRandomID()
|
|
containerInit := fmt.Sprintf("%s-init", containerID)
|
|
|
|
if err := graph.Create(containerInit, graphID1, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := graph.ApplyDiff(containerInit, graphID1, bytes.NewReader(initTar)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := graph.Create(containerID, containerInit, nil); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if _, err := graph.ApplyDiff(containerID, containerInit, bytes.NewReader(mountTar)); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := ls.(*layerStore).CreateRWLayerByGraphID("migration-mount", containerID, layer1.ChainID()); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
rwLayer1, err := ls.GetRWLayer("migration-mount")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if _, err := rwLayer1.Mount(""); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
changes, err := rwLayer1.Changes()
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if expected := 5; len(changes) != expected {
|
|
t.Logf("Changes %#v", changes)
|
|
t.Fatalf("Wrong number of changes %d, expected %d", len(changes), expected)
|
|
}
|
|
|
|
sortChanges(changes)
|
|
|
|
assertChange(t, changes[0], archive.Change{
|
|
Path: "/etc",
|
|
Kind: archive.ChangeModify,
|
|
})
|
|
assertChange(t, changes[1], archive.Change{
|
|
Path: "/etc/hosts",
|
|
Kind: archive.ChangeModify,
|
|
})
|
|
assertChange(t, changes[2], archive.Change{
|
|
Path: "/root",
|
|
Kind: archive.ChangeModify,
|
|
})
|
|
assertChange(t, changes[3], archive.Change{
|
|
Path: "/root/.bashrc",
|
|
Kind: archive.ChangeModify,
|
|
})
|
|
assertChange(t, changes[4], archive.Change{
|
|
Path: "/root/testfile1.txt",
|
|
Kind: archive.ChangeAdd,
|
|
})
|
|
|
|
if _, err := ls.CreateRWLayer("migration-mount", layer1.ChainID(), nil); err == nil {
|
|
t.Fatal("Expected error creating mount with same name")
|
|
} else if err != ErrMountNameConflict {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
rwLayer2, err := ls.GetRWLayer("migration-mount")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if getMountLayer(rwLayer1) != getMountLayer(rwLayer2) {
|
|
t.Fatal("Expected same layer from get with same name as from migrate")
|
|
}
|
|
|
|
if _, err := rwLayer2.Mount(""); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if _, err := rwLayer2.Mount(""); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if metadata, err := ls.Release(layer1); err != nil {
|
|
t.Fatal(err)
|
|
} else if len(metadata) > 0 {
|
|
t.Fatalf("Expected no layers to be deleted, deleted %#v", metadata)
|
|
}
|
|
|
|
if err := rwLayer1.Unmount(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if _, err := ls.ReleaseRWLayer(rwLayer1); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
if err := rwLayer2.Unmount(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if err := rwLayer2.Unmount(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
metadata, err := ls.ReleaseRWLayer(rwLayer2)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if len(metadata) == 0 {
|
|
t.Fatal("Expected base layer to be deleted when deleting mount")
|
|
}
|
|
|
|
assertMetadata(t, metadata, createMetadata(layer1))
|
|
}
|