/
exec_test.go
244 lines (201 loc) · 6.29 KB
/
exec_test.go
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package ops
import (
"context"
"io/ioutil"
"os"
"path/filepath"
"sync"
"testing"
"github.com/containerd/containerd/content"
"github.com/containerd/containerd/content/local"
"github.com/containerd/containerd/diff/apply"
"github.com/containerd/containerd/leases"
ctdmetadata "github.com/containerd/containerd/metadata"
"github.com/containerd/containerd/namespaces"
"github.com/containerd/containerd/snapshots"
"github.com/containerd/containerd/snapshots/native"
"github.com/moby/buildkit/cache"
"github.com/moby/buildkit/cache/metadata"
"github.com/moby/buildkit/snapshot"
containerdsnapshot "github.com/moby/buildkit/snapshot/containerd"
"github.com/moby/buildkit/solver/pb"
"github.com/moby/buildkit/util/leaseutil"
"github.com/pkg/errors"
"github.com/stretchr/testify/require"
bolt "go.etcd.io/bbolt"
)
type cmOpt struct {
snapshotterName string
snapshotter snapshots.Snapshotter
tmpdir string
}
type cmOut struct {
manager cache.Manager
lm leases.Manager
cs content.Store
md *metadata.Store
}
func newCacheManager(ctx context.Context, opt cmOpt) (co *cmOut, cleanup func() error, err error) {
ns, ok := namespaces.Namespace(ctx)
if !ok {
return nil, nil, errors.Errorf("namespace required for test")
}
if opt.snapshotterName == "" {
opt.snapshotterName = "native"
}
tmpdir, err := ioutil.TempDir("", "cachemanager")
if err != nil {
return nil, nil, err
}
defers := make([]func() error, 0)
cleanup = func() error {
var err error
for i := range defers {
if err1 := defers[len(defers)-1-i](); err1 != nil && err == nil {
err = err1
}
}
return err
}
defer func() {
if err != nil {
cleanup()
}
}()
if opt.tmpdir == "" {
defers = append(defers, func() error {
return os.RemoveAll(tmpdir)
})
} else {
os.RemoveAll(tmpdir)
tmpdir = opt.tmpdir
}
if opt.snapshotter == nil {
snapshotter, err := native.NewSnapshotter(filepath.Join(tmpdir, "snapshots"))
if err != nil {
return nil, nil, err
}
opt.snapshotter = snapshotter
}
md, err := metadata.NewStore(filepath.Join(tmpdir, "metadata.db"))
if err != nil {
return nil, nil, err
}
store, err := local.NewStore(tmpdir)
if err != nil {
return nil, nil, err
}
db, err := bolt.Open(filepath.Join(tmpdir, "containerdmeta.db"), 0644, nil)
if err != nil {
return nil, nil, err
}
defers = append(defers, func() error {
return db.Close()
})
mdb := ctdmetadata.NewDB(db, store, map[string]snapshots.Snapshotter{
opt.snapshotterName: opt.snapshotter,
})
if err := mdb.Init(context.TODO()); err != nil {
return nil, nil, err
}
lm := ctdmetadata.NewLeaseManager(mdb)
cm, err := cache.NewManager(cache.ManagerOpt{
Snapshotter: snapshot.FromContainerdSnapshotter(opt.snapshotterName, containerdsnapshot.NSSnapshotter(ns, mdb.Snapshotter(opt.snapshotterName)), nil),
MetadataStore: md,
ContentStore: mdb.ContentStore(),
LeaseManager: leaseutil.WithNamespace(lm, ns),
GarbageCollect: mdb.GarbageCollect,
Applier: apply.NewFileSystemApplier(mdb.ContentStore()),
})
if err != nil {
return nil, nil, err
}
return &cmOut{
manager: cm,
lm: lm,
cs: mdb.ContentStore(),
md: md,
}, cleanup, nil
}
func TestDedupPaths(t *testing.T) {
res := dedupePaths([]string{"Gemfile", "Gemfile/foo"})
require.Equal(t, []string{"Gemfile"}, res)
res = dedupePaths([]string{"Gemfile/bar", "Gemfile/foo"})
require.Equal(t, []string{"Gemfile/bar", "Gemfile/foo"}, res)
res = dedupePaths([]string{"Gemfile", "Gemfile.lock"})
require.Equal(t, []string{"Gemfile", "Gemfile.lock"}, res)
res = dedupePaths([]string{"Gemfile.lock", "Gemfile"})
require.Equal(t, []string{"Gemfile", "Gemfile.lock"}, res)
res = dedupePaths([]string{"foo", "Gemfile", "Gemfile/foo"})
require.Equal(t, []string{"Gemfile", "foo"}, res)
res = dedupePaths([]string{"foo/bar/baz", "foo/bara", "foo/bar/bax", "foo/bar"})
require.Equal(t, []string{"foo/bar", "foo/bara"}, res)
}
func TestCacheMountPrivateRefs(t *testing.T) {
t.Parallel()
ctx := namespaces.WithNamespace(context.Background(), "buildkit-test")
tmpdir, err := ioutil.TempDir("", "cachemanager")
require.NoError(t, err)
defer os.RemoveAll(tmpdir)
snapshotter, err := native.NewSnapshotter(filepath.Join(tmpdir, "snapshots"))
require.NoError(t, err)
co, cleanup, err := newCacheManager(ctx, cmOpt{
snapshotter: snapshotter,
snapshotterName: "native",
})
require.NoError(t, err)
defer cleanup()
g1 := &cacheRefGetter{
locker: &sync.Mutex{},
cacheMounts: map[string]*cacheRefShare{},
cm: co.manager,
md: co.md,
}
g2 := &cacheRefGetter{
locker: g1.locker,
cacheMounts: map[string]*cacheRefShare{},
cm: co.manager,
md: co.md,
}
g3 := &cacheRefGetter{
locker: g1.locker,
cacheMounts: map[string]*cacheRefShare{},
cm: co.manager,
md: co.md,
}
g4 := &cacheRefGetter{
locker: g1.locker,
cacheMounts: map[string]*cacheRefShare{},
cm: co.manager,
md: co.md,
}
ref, err := g1.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
ref2, err := g1.getRefCacheDir(ctx, nil, "bar", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
// different ID returns different ref
require.NotEqual(t, ref.ID(), ref2.ID())
// same ID on same mount still shares the reference
ref3, err := g1.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
require.Equal(t, ref.ID(), ref3.ID())
// same ID on different mount gets a new ID
ref4, err := g2.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
require.NotEqual(t, ref.ID(), ref4.ID())
// releasing one of two refs still keeps first ID private
ref.Release(context.TODO())
ref5, err := g3.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
require.NotEqual(t, ref.ID(), ref5.ID())
require.NotEqual(t, ref4.ID(), ref5.ID())
// releasing all refs releases ID to be reused
ref3.Release(context.TODO())
ref5, err = g4.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
require.Equal(t, ref.ID(), ref5.ID())
// other mounts still keep their IDs
ref6, err := g2.getRefCacheDir(ctx, nil, "foo", pb.CacheSharingOpt_PRIVATE)
require.NoError(t, err)
require.Equal(t, ref4.ID(), ref6.ID())
}