mirror of https://github.com/goharbor/harbor.git
174 lines
4.5 KiB
Go
174 lines
4.5 KiB
Go
package registry
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import (
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"encoding/json"
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"net/http"
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"github.com/go-openapi/swag"
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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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"github.com/goharbor/harbor/src/lib/errors"
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lib_http "github.com/goharbor/harbor/src/lib/http"
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"github.com/goharbor/harbor/src/lib/q"
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"github.com/goharbor/harbor/src/pkg/accessory"
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"github.com/goharbor/harbor/src/pkg/artifact"
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"github.com/goharbor/harbor/src/server/router"
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"github.com/goharbor/harbor/src/server/v2.0/handler"
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)
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const ReferrersSchemaVersion = 2
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const ReferrersMediaType = "application/vnd.oci.image.index.v1+json"
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func newReferrersHandler() http.Handler {
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return &referrersHandler{
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artifactManager: artifact.NewManager(),
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accessoryManager: accessory.NewManager(),
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}
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}
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type referrersHandler struct {
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artifactManager artifact.Manager
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accessoryManager accessory.Manager
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}
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func (r *referrersHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
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ctx := req.Context()
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repository := router.Param(ctx, ":splat")
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reference := router.Param(ctx, ":reference")
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at := req.URL.Query().Get("artifactType")
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// Check if the reference is a valid digest
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if _, err := digest.Parse(reference); err != nil {
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lib_http.SendError(w, errors.Wrapf(err, "unsupported digest %s", reference).WithCode(errors.BadRequestCode))
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return
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}
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result := &ocispec.Index{}
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// Get the artifact by reference
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art, err := r.artifactManager.GetByDigest(ctx, repository, reference)
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if err != nil {
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if errors.IsNotFoundErr(err) {
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// If artifact not found, return empty index
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newListReferrersOK().WithPayload(result).WriteResponse(w)
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return
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}
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lib_http.SendError(w, err)
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return
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}
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// Query accessories with matching subject artifact digest and artifactType
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query := q.New(q.KeyWords{"SubjectArtifactDigest": art.Digest})
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if at != "" {
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query = q.New(q.KeyWords{"SubjectArtifactDigest": art.Digest, "Type": at})
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}
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total, err := r.accessoryManager.Count(ctx, query)
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if err != nil {
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lib_http.SendError(w, err)
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return
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}
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accs, err := r.accessoryManager.List(ctx, query)
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if err != nil {
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lib_http.SendError(w, err)
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return
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}
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// Build index manifest from accessories
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var mfs []ocispec.Descriptor
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for _, acc := range accs {
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accArt, err := r.artifactManager.GetByDigest(ctx, repository, acc.GetData().Digest)
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if err != nil {
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lib_http.SendError(w, err)
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return
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}
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mf := ocispec.Descriptor{
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MediaType: accArt.ManifestMediaType,
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Size: accArt.Size,
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Digest: digest.Digest(accArt.Digest),
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Annotations: accArt.Annotations,
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ArtifactType: acc.GetData().Type,
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}
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mfs = append(mfs, mf)
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}
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// Populate index manifest
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result.SchemaVersion = ReferrersSchemaVersion
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result.MediaType = ReferrersMediaType
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result.Manifests = mfs
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// Write response with index manifest and headers
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baseAPI := &handler.BaseAPI{}
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newListReferrersOK().
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WithXTotalCount(total).
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WithLink(baseAPI.Links(ctx, req.URL, total, query.PageNumber, query.PageSize).String()).
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WithPayload(result).WriteResponse(w)
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}
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type listReferrersOK struct {
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/*Link refers to the previous page and next page
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*/
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Link string `json:"Link"`
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/*The total count of accessories
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*/
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XTotalCount int64 `json:"X-Total-Count"`
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/*
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In: Body
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*/
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Payload *ocispec.Index `json:"body,omitempty"`
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}
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// newListReferrersOK creates newlistReferrersOK with default headers values
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func newListReferrersOK() *listReferrersOK {
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return &listReferrersOK{}
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}
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// WithLink adds the link to the get referrers o k response
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func (o *listReferrersOK) WithLink(link string) *listReferrersOK {
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o.Link = link
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return o
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}
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// WithXTotalCount adds the xTotalCount to the list accessories o k response
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func (o *listReferrersOK) WithXTotalCount(xTotalCount int64) *listReferrersOK {
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o.XTotalCount = xTotalCount
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return o
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}
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// WithPayload adds the payload to the list accessories o k response
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func (o *listReferrersOK) WithPayload(payload *ocispec.Index) *listReferrersOK {
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o.Payload = payload
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return o
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}
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// WriteResponse to the client
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func (o *listReferrersOK) WriteResponse(rw http.ResponseWriter) {
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rw.Header().Set("Content-Type", "application/json; charset=utf-8")
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link := o.Link
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if link != "" {
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rw.Header().Set("Link", link)
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}
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xTotalCount := swag.FormatInt64(o.XTotalCount)
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if xTotalCount != "" {
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rw.Header().Set("X-Total-Count", xTotalCount)
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}
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rw.WriteHeader(200)
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payload := o.Payload
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if payload == nil {
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// return empty index
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payload = &ocispec.Index{}
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}
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enc := json.NewEncoder(rw)
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if err := enc.Encode(payload); err != nil {
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lib_http.SendError(rw, err)
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return
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}
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}
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