0a6b8f0ee0
Helpers to convert from the OCI image specs [Descriptor] to its protobuf structure for Descriptor and vice-versa appear three times. It seems sane to just expose this facility in /oci. Signed-off-by: Danny Canter <danny@dcantah.dev>
100 lines
3.0 KiB
Go
100 lines
3.0 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 proxy
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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/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/containerd/oci"
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"github.com/containerd/containerd/pkg/epoch"
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"github.com/containerd/containerd/protobuf"
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ptypes "github.com/containerd/containerd/protobuf/types"
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ocispec "github.com/opencontainers/image-spec/specs-go/v1"
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"google.golang.org/protobuf/types/known/timestamppb"
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)
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// NewDiffApplier returns a new comparer and applier which communicates
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// over a GRPC connection.
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func NewDiffApplier(client diffapi.DiffClient) interface{} {
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return &diffRemote{
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client: client,
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}
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}
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type diffRemote struct {
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client diffapi.DiffClient
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}
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func (r *diffRemote) Apply(ctx context.Context, desc ocispec.Descriptor, mounts []mount.Mount, opts ...diff.ApplyOpt) (ocispec.Descriptor, error) {
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var config diff.ApplyConfig
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for _, opt := range opts {
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if err := opt(ctx, desc, &config); err != nil {
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return ocispec.Descriptor{}, err
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}
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}
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payloads := make(map[string]*ptypes.Any)
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for k, v := range config.ProcessorPayloads {
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payloads[k] = protobuf.FromAny(v)
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}
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req := &diffapi.ApplyRequest{
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Diff: oci.DescriptorToProto(desc),
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Mounts: mount.ToProto(mounts),
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Payloads: payloads,
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}
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resp, err := r.client.Apply(ctx, req)
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if err != nil {
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return ocispec.Descriptor{}, errdefs.FromGRPC(err)
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}
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return oci.DescriptorFromProto(resp.Applied), nil
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}
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func (r *diffRemote) Compare(ctx context.Context, a, b []mount.Mount, opts ...diff.Opt) (ocispec.Descriptor, error) {
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var config diff.Config
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for _, opt := range opts {
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if err := opt(&config); err != nil {
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return ocispec.Descriptor{}, err
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}
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}
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if tm := epoch.FromContext(ctx); tm != nil && config.SourceDateEpoch == nil {
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config.SourceDateEpoch = tm
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}
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var sourceDateEpoch *timestamppb.Timestamp
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if config.SourceDateEpoch != nil {
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sourceDateEpoch = timestamppb.New(*config.SourceDateEpoch)
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}
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req := &diffapi.DiffRequest{
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Left: mount.ToProto(a),
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Right: mount.ToProto(b),
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MediaType: config.MediaType,
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Ref: config.Reference,
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Labels: config.Labels,
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SourceDateEpoch: sourceDateEpoch,
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}
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resp, err := r.client.Diff(ctx, req)
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if err != nil {
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return ocispec.Descriptor{}, errdefs.FromGRPC(err)
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}
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return oci.DescriptorFromProto(resp.Diff), nil
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}
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