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compat,build: handle docker's preconfigured cacheTo,cacheFrom

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Docker's newer clients popuates `cacheFrom` and `cacheTo` parameter
by default as empty array for all commands but buildah's design of
distributed cache expects this to be a repo not image hence parse
only the first populated repo and igore if empty array.

Signed-off-by: Aditya R <arajan@redhat.com>
This commit is contained in:
Aditya R
2022-11-02 14:34:26 +05:30
committed by Romain Geissler
parent 0608f55e91
commit 75b236a2b4
2 changed files with 42 additions and 8 deletions
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43
pkg/api/handlers/compat/images_build.go
View File

@ -391,20 +391,47 @@ func BuildImage(w http.ResponseWriter, r *http.Request) {
}
}
// Docker clients, as of v19.03.0, populates `cacheFrom` and `cacheTo`
// parameter by default as empty array for all commands but buildah's
// design of distributed cache expects this to be a repo not image hence
// parse only the first populated repo and igore if empty array.
// Read more here: https://github.com/containers/podman/issues/15928
// TODO: Remove this when buildah's API is extended.
compatIgnoreForcedCacheOptions := func(queryStr string) string {
query := queryStr
if strings.HasPrefix(query, "[") {
query = ""
var arr []string
parseErr := json.Unmarshal([]byte(query), &arr)
if parseErr != nil {
if len(arr) > 0 {
query = arr[0]
}
}
}
return query
}
var cacheFrom reference.Named
if _, found := r.URL.Query()["cachefrom"]; found {
cacheFrom, err = parse.RepoNameToNamedReference(query.CacheFrom)
if err != nil {
utils.BadRequest(w, "cacheFrom", query.CacheFrom, err)
return
cacheFromQuery := compatIgnoreForcedCacheOptions(query.CacheFrom)
if cacheFromQuery != "" {
cacheFrom, err = parse.RepoNameToNamedReference(cacheFromQuery)
if err != nil {
utils.BadRequest(w, "cacheFrom", cacheFromQuery, err)
return
}
}
}
var cacheTo reference.Named
if _, found := r.URL.Query()["cacheto"]; found {
cacheTo, err = parse.RepoNameToNamedReference(query.CacheTo)
if err != nil {
utils.BadRequest(w, "cacheto", query.CacheTo, err)
return
cacheToQuery := compatIgnoreForcedCacheOptions(query.CacheTo)
if cacheToQuery != "" {
cacheTo, err = parse.RepoNameToNamedReference(cacheToQuery)
if err != nil {
utils.BadRequest(w, "cacheto", cacheToQuery, err)
return
}
}
}
var cacheTTL time.Duration

7
test/apiv2/10-images.at
View File

@ -189,6 +189,13 @@ tar --format=posix -C $TMPD -cvf ${CONTAINERFILE_TAR} containerfile &> /dev/null
t POST "libpod/build?dockerfile=containerfile" $CONTAINERFILE_TAR 200 \
.stream~"STEP 1/1: FROM $IMAGE"
# Docker client as of v19.03.0 sets empty cacheFrom for every build command even if it is not used,
# following commit makes sure we test such use-case. See https://github.com/containers/podman/pull/16380
#TODO: This test should be extended when buildah's cache-from and cache-to functionally supports
# multiple remote-repos
t POST "libpod/build?dockerfile=containerfile&cachefrom=[]" $CONTAINERFILE_TAR 200 \
.stream~"STEP 1/1: FROM $IMAGE"
# With -q, all we should get is image ID. Test both libpod & compat endpoints.
t POST "libpod/build?dockerfile=containerfile&q=true" $CONTAINERFILE_TAR 200 \
.stream~'^[0-9a-f]\{64\}$'