55a8102ec1
Helpers to convert from containerd's [Mount] to its protobuf structure for [Mount] and vice-versa appear three times. It seems sane to just expose this facility in /mount. Signed-off-by: Danny Canter <danny@dcantah.dev>
128 lines
3.2 KiB
Go
128 lines
3.2 KiB
Go
/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package diffservice
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import (
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"context"
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diffapi "github.com/containerd/containerd/api/services/diff/v1"
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"github.com/containerd/containerd/api/types"
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"github.com/containerd/containerd/diff"
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"github.com/containerd/containerd/errdefs"
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"github.com/containerd/containerd/mount"
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"github.com/containerd/typeurl/v2"
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"github.com/opencontainers/go-digest"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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)
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type service struct {
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applier diff.Applier
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comparer diff.Comparer
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diffapi.UnimplementedDiffServer
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}
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func FromApplierAndComparer(a diff.Applier, c diff.Comparer) diffapi.DiffServer {
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return &service{
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applier: a,
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comparer: c,
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}
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}
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func (s *service) Apply(ctx context.Context, er *diffapi.ApplyRequest) (*diffapi.ApplyResponse, error) {
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if s.applier == nil {
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return nil, errdefs.ToGRPC(errdefs.ErrNotImplemented)
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}
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var (
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ocidesc ocispec.Descriptor
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err error
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desc = toDescriptor(er.Diff)
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mounts = mount.FromProto(er.Mounts)
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)
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var opts []diff.ApplyOpt
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if er.Payloads != nil {
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payloads := make(map[string]typeurl.Any)
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for k, v := range er.Payloads {
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payloads[k] = v
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}
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opts = append(opts, diff.WithPayloads(payloads))
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}
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ocidesc, err = s.applier.Apply(ctx, desc, mounts, opts...)
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if err != nil {
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return nil, errdefs.ToGRPC(err)
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}
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return &diffapi.ApplyResponse{
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Applied: fromDescriptor(ocidesc),
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}, nil
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}
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func (s *service) Diff(ctx context.Context, dr *diffapi.DiffRequest) (*diffapi.DiffResponse, error) {
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if s.comparer == nil {
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return nil, errdefs.ToGRPC(errdefs.ErrNotImplemented)
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}
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var (
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ocidesc ocispec.Descriptor
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err error
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aMounts = mount.FromProto(dr.Left)
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bMounts = mount.FromProto(dr.Right)
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)
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var opts []diff.Opt
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if dr.MediaType != "" {
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opts = append(opts, diff.WithMediaType(dr.MediaType))
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}
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if dr.Ref != "" {
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opts = append(opts, diff.WithReference(dr.Ref))
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}
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if dr.Labels != nil {
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opts = append(opts, diff.WithLabels(dr.Labels))
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}
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if dr.SourceDateEpoch != nil {
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tm := dr.SourceDateEpoch.AsTime()
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opts = append(opts, diff.WithSourceDateEpoch(&tm))
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}
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ocidesc, err = s.comparer.Compare(ctx, aMounts, bMounts, opts...)
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if err != nil {
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return nil, errdefs.ToGRPC(err)
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}
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return &diffapi.DiffResponse{
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Diff: fromDescriptor(ocidesc),
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}, nil
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}
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func toDescriptor(d *types.Descriptor) ocispec.Descriptor {
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return ocispec.Descriptor{
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MediaType: d.MediaType,
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Digest: digest.Digest(d.Digest),
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Size: d.Size,
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Annotations: d.Annotations,
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}
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}
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func fromDescriptor(d ocispec.Descriptor) *types.Descriptor {
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return &types.Descriptor{
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MediaType: d.MediaType,
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Digest: d.Digest.String(),
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Size: d.Size,
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Annotations: d.Annotations,
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}
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}
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