github.com/pwn-term/docker@v0.0.0-20210616085119-6e977cce2565/moby/daemon/images/store_test.go (about)

     1  package images
     2  
     3  import (
     4  	"context"
     5  	"io/ioutil"
     6  	"os"
     7  	"path/filepath"
     8  	"testing"
     9  
    10  	"github.com/containerd/containerd/content"
    11  	"github.com/containerd/containerd/content/local"
    12  	c8derrdefs "github.com/containerd/containerd/errdefs"
    13  	"github.com/containerd/containerd/leases"
    14  	"github.com/containerd/containerd/metadata"
    15  	"github.com/containerd/containerd/namespaces"
    16  	"github.com/docker/docker/image"
    17  	digest "github.com/opencontainers/go-digest"
    18  	v1 "github.com/opencontainers/image-spec/specs-go/v1"
    19  	"go.etcd.io/bbolt"
    20  	"gotest.tools/v3/assert"
    21  	"gotest.tools/v3/assert/cmp"
    22  )
    23  
    24  func setupTestStores(t *testing.T) (context.Context, content.Store, *imageStoreWithLease, func(t *testing.T)) {
    25  	dir, err := ioutil.TempDir("", t.Name())
    26  	assert.NilError(t, err)
    27  
    28  	backend, err := image.NewFSStoreBackend(filepath.Join(dir, "images"))
    29  	assert.NilError(t, err)
    30  	is, err := image.NewImageStore(backend, nil)
    31  	assert.NilError(t, err)
    32  
    33  	db, err := bbolt.Open(filepath.Join(dir, "metadata.db"), 0600, nil)
    34  	assert.NilError(t, err)
    35  
    36  	cs, err := local.NewStore(filepath.Join(dir, "content"))
    37  	assert.NilError(t, err)
    38  	mdb := metadata.NewDB(db, cs, nil)
    39  
    40  	cleanup := func(t *testing.T) {
    41  		assert.Check(t, db.Close())
    42  		assert.Check(t, os.RemoveAll(dir))
    43  	}
    44  	ctx := namespaces.WithNamespace(context.Background(), t.Name())
    45  	images := &imageStoreWithLease{Store: is, ns: t.Name(), leases: metadata.NewLeaseManager(mdb)}
    46  
    47  	return ctx, cs, images, cleanup
    48  }
    49  
    50  func TestImageDelete(t *testing.T) {
    51  	ctx, _, images, cleanup := setupTestStores(t)
    52  	defer cleanup(t)
    53  
    54  	t.Run("no lease", func(t *testing.T) {
    55  		id, err := images.Create([]byte(`{"rootFS": {}}`))
    56  		assert.NilError(t, err)
    57  		defer images.Delete(id)
    58  
    59  		ls, err := images.leases.List(ctx)
    60  		assert.NilError(t, err)
    61  		assert.Equal(t, len(ls), 0, ls)
    62  
    63  		_, err = images.Delete(id)
    64  		assert.NilError(t, err, "should not error when there is no lease")
    65  	})
    66  
    67  	t.Run("lease exists", func(t *testing.T) {
    68  		id, err := images.Create([]byte(`{"rootFS": {}}`))
    69  		assert.NilError(t, err)
    70  		defer images.Delete(id)
    71  
    72  		leaseID := imageKey(digest.Digest(id))
    73  		_, err = images.leases.Create(ctx, leases.WithID(leaseID))
    74  		assert.NilError(t, err)
    75  		defer images.leases.Delete(ctx, leases.Lease{ID: leaseID})
    76  
    77  		ls, err := images.leases.List(ctx)
    78  		assert.NilError(t, err)
    79  		assert.Check(t, cmp.Equal(len(ls), 1), ls)
    80  
    81  		_, err = images.Delete(id)
    82  		assert.NilError(t, err)
    83  
    84  		ls, err = images.leases.List(ctx)
    85  		assert.NilError(t, err)
    86  		assert.Check(t, cmp.Equal(len(ls), 0), ls)
    87  	})
    88  }
    89  
    90  func TestContentStoreForPull(t *testing.T) {
    91  	ctx, cs, is, cleanup := setupTestStores(t)
    92  	defer cleanup(t)
    93  
    94  	csP := &contentStoreForPull{
    95  		ContentStore: cs,
    96  		leases:       is.leases,
    97  	}
    98  
    99  	data := []byte(`{}`)
   100  	desc := v1.Descriptor{
   101  		Digest: digest.Canonical.FromBytes(data),
   102  		Size:   int64(len(data)),
   103  	}
   104  
   105  	w, err := csP.Writer(ctx, content.WithRef(t.Name()), content.WithDescriptor(desc))
   106  	assert.NilError(t, err)
   107  
   108  	_, err = w.Write(data)
   109  	assert.NilError(t, err)
   110  	defer w.Close()
   111  
   112  	err = w.Commit(ctx, desc.Size, desc.Digest)
   113  	assert.NilError(t, err)
   114  
   115  	assert.Equal(t, len(csP.digested), 1)
   116  	assert.Check(t, cmp.Equal(csP.digested[0], desc.Digest))
   117  
   118  	// Test already exists
   119  	csP.digested = nil
   120  	_, err = csP.Writer(ctx, content.WithRef(t.Name()), content.WithDescriptor(desc))
   121  	assert.Check(t, c8derrdefs.IsAlreadyExists(err))
   122  	assert.Equal(t, len(csP.digested), 1)
   123  	assert.Check(t, cmp.Equal(csP.digested[0], desc.Digest))
   124  }