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Diffstat (limited to 'pkg/api/handlers/compat/images.go')
-rw-r--r--pkg/api/handlers/compat/images.go76
1 files changed, 37 insertions, 39 deletions
diff --git a/pkg/api/handlers/compat/images.go b/pkg/api/handlers/compat/images.go
index 3f4320efa..7b336c470 100644
--- a/pkg/api/handlers/compat/images.go
+++ b/pkg/api/handlers/compat/images.go
@@ -1,7 +1,6 @@
package compat
import (
- "context"
"encoding/json"
"fmt"
"io/ioutil"
@@ -13,12 +12,12 @@ import (
"github.com/containers/common/libimage"
"github.com/containers/common/pkg/config"
"github.com/containers/image/v5/manifest"
+ "github.com/containers/image/v5/pkg/shortnames"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v3/libpod"
"github.com/containers/podman/v3/pkg/api/handlers"
"github.com/containers/podman/v3/pkg/api/handlers/utils"
"github.com/containers/podman/v3/pkg/auth"
- "github.com/containers/podman/v3/pkg/channel"
"github.com/containers/podman/v3/pkg/domain/entities"
"github.com/containers/podman/v3/pkg/domain/infra/abi"
"github.com/containers/storage"
@@ -210,6 +209,11 @@ func CreateImageFromSrc(w http.ResponseWriter, r *http.Request) {
})
}
+type pullResult struct {
+ images []*libimage.Image
+ err error
+}
+
func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
// 200 no error
// 404 repo does not exist or no read access
@@ -231,6 +235,14 @@ func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
fromImage := mergeNameAndTagOrDigest(query.FromImage, query.Tag)
+ // without this early check this function would return 200 but reported error via body stream soon after
+ // it's better to let caller know early via HTTP status code that request cannot be processed
+ _, err := shortnames.Resolve(runtime.SystemContext(), fromImage)
+ if err != nil {
+ utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.Wrap(err, "failed to resolve image name"))
+ return
+ }
+
authConf, authfile, key, err := auth.GetCredentials(r)
if err != nil {
utils.Error(w, "failed to retrieve repository credentials", http.StatusBadRequest, errors.Wrapf(err, "failed to parse %q header for %s", key, r.URL.String()))
@@ -247,26 +259,14 @@ func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
}
pullOptions.Writer = os.Stderr // allows for debugging on the server
- stderr := channel.NewWriter(make(chan []byte))
- defer stderr.Close()
-
progress := make(chan types.ProgressProperties)
+
pullOptions.Progress = progress
- var img string
- runCtx, cancel := context.WithCancel(context.Background())
+ pullResChan := make(chan pullResult)
go func() {
- defer cancel()
- pulledImages, err := runtime.LibimageRuntime().Pull(runCtx, fromImage, config.PullPolicyAlways, pullOptions)
- if err != nil {
- stderr.Write([]byte(err.Error() + "\n"))
- } else {
- if len(pulledImages) == 0 {
- utils.Error(w, "Something went wrong.", http.StatusBadRequest, errors.New("internal error: no images pulled"))
- return
- }
- img = pulledImages[0].ID()
- }
+ pulledImages, err := runtime.LibimageRuntime().Pull(r.Context(), fromImage, config.PullPolicyAlways, pullOptions)
+ pullResChan <- pullResult{images: pulledImages, err: err}
}()
flush := func() {
@@ -281,7 +281,6 @@ func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
enc := json.NewEncoder(w)
enc.SetEscapeHTML(true)
- var failed bool
loop: // break out of for/select infinite loop
for {
@@ -312,32 +311,31 @@ loop: // break out of for/select infinite loop
}
report.Id = e.Artifact.Digest.Encoded()[0:12]
if err := enc.Encode(report); err != nil {
- stderr.Write([]byte(err.Error()))
- }
- flush()
- case e := <-stderr.Chan():
- failed = true
- report.Error = string(e)
- if err := enc.Encode(report); err != nil {
logrus.Warnf("Failed to json encode error %q", err.Error())
}
flush()
- case <-runCtx.Done():
- if !failed {
- if utils.IsLibpodRequest(r) {
- report.Status = "Pull complete"
+ case pullRes := <-pullResChan:
+ err := pullRes.err
+ pulledImages := pullRes.images
+ if err != nil {
+ report.Error = err.Error()
+ } else {
+ if len(pulledImages) > 0 {
+ img := pulledImages[0].ID()
+ if utils.IsLibpodRequest(r) {
+ report.Status = "Pull complete"
+ } else {
+ report.Status = "Download complete"
+ }
+ report.Id = img[0:12]
} else {
- report.Status = "Download complete"
- }
- report.Id = img[0:12]
- if err := enc.Encode(report); err != nil {
- logrus.Warnf("Failed to json encode error %q", err.Error())
+ report.Error = "internal error: no images pulled"
}
- flush()
}
- break loop // break out of for/select infinite loop
- case <-r.Context().Done():
- // Client has closed connection
+ if err := enc.Encode(report); err != nil {
+ logrus.Warnf("Failed to json encode error %q", err.Error())
+ }
+ flush()
break loop // break out of for/select infinite loop
}
}