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Add --limit option to docker search

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This fix tries to address the issue raised in #23055.
Currently `docker search` result caps at 25 and there is
no way to allow getting more results (if exist).

This fix adds the flag `--limit` so that it is possible
to return more results from the `docker search`.

Related documentation has been updated.

Additional tests have been added to cover the changes.

This fix fixes #23055.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>
This commit is contained in:
Yong Tang 2016-06-01 13:38:14 -07:00
parent d265da7356
commit 08426ad10d
3 changed files with 15 additions and 7 deletions
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2
docs/registry_test.go
View file

@ -730,7 +730,7 @@ func TestPushImageJSONIndex(t *testing.T) {
func TestSearchRepositories(t *testing.T) { func TestSearchRepositories(t *testing.T) {
r := spawnTestRegistrySession(t) r := spawnTestRegistrySession(t)
results, err := r.SearchRepositories("fakequery") results, err := r.SearchRepositories("fakequery", 25)
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
} }

13
docs/service.go
View file

@ -15,6 +15,11 @@ import (
registrytypes "github.com/docker/engine-api/types/registry" registrytypes "github.com/docker/engine-api/types/registry"
) )
const (
// DefaultSearchLimit is the default value for maximum number of returned search results.
DefaultSearchLimit = 25
)
// Service is the interface defining what a registry service should implement. // Service is the interface defining what a registry service should implement.
type Service interface { type Service interface {
Auth(ctx context.Context, authConfig *types.AuthConfig, userAgent string) (status, token string, err error) Auth(ctx context.Context, authConfig *types.AuthConfig, userAgent string) (status, token string, err error)
@ -22,7 +27,7 @@ type Service interface {
LookupPushEndpoints(hostname string) (endpoints []APIEndpoint, err error) LookupPushEndpoints(hostname string) (endpoints []APIEndpoint, err error)
ResolveRepository(name reference.Named) (*RepositoryInfo, error) ResolveRepository(name reference.Named) (*RepositoryInfo, error)
ResolveIndex(name string) (*registrytypes.IndexInfo, error) ResolveIndex(name string) (*registrytypes.IndexInfo, error)
Search(ctx context.Context, term string, authConfig *types.AuthConfig, userAgent string, headers map[string][]string) (*registrytypes.SearchResults, error) Search(ctx context.Context, term string, limit int, authConfig *types.AuthConfig, userAgent string, headers map[string][]string) (*registrytypes.SearchResults, error)
ServiceConfig() *registrytypes.ServiceConfig ServiceConfig() *registrytypes.ServiceConfig
TLSConfig(hostname string) (*tls.Config, error) TLSConfig(hostname string) (*tls.Config, error)
} }
@ -108,7 +113,7 @@ func splitReposSearchTerm(reposName string) (string, string) {
// Search queries the public registry for images matching the specified // Search queries the public registry for images matching the specified
// search terms, and returns the results. // search terms, and returns the results.
func (s *DefaultService) Search(ctx context.Context, term string, authConfig *types.AuthConfig, userAgent string, headers map[string][]string) (*registrytypes.SearchResults, error) { func (s *DefaultService) Search(ctx context.Context, term string, limit int, authConfig *types.AuthConfig, userAgent string, headers map[string][]string) (*registrytypes.SearchResults, error) {
// TODO Use ctx when searching for repositories // TODO Use ctx when searching for repositories
if err := validateNoScheme(term); err != nil { if err := validateNoScheme(term); err != nil {
return nil, err return nil, err
@ -139,9 +144,9 @@ func (s *DefaultService) Search(ctx context.Context, term string, authConfig *ty
localName = strings.SplitN(localName, "/", 2)[1] localName = strings.SplitN(localName, "/", 2)[1]
} }
return r.SearchRepositories(localName) return r.SearchRepositories(localName, limit)
} }
return r.SearchRepositories(remoteName) return r.SearchRepositories(remoteName, limit)
} }
// ResolveRepository splits a repository name into its components // ResolveRepository splits a repository name into its components

7
docs/session.go
View file

@ -721,9 +721,12 @@ func shouldRedirect(response *http.Response) bool {
} }
// SearchRepositories performs a search against the remote repository // SearchRepositories performs a search against the remote repository
func (r *Session) SearchRepositories(term string) (*registrytypes.SearchResults, error) { func (r *Session) SearchRepositories(term string, limit int) (*registrytypes.SearchResults, error) {
if limit < 1 || limit > 100 {
return nil, fmt.Errorf("Limit %d is outside the range of [1, 100]", limit)
}
logrus.Debugf("Index server: %s", r.indexEndpoint) logrus.Debugf("Index server: %s", r.indexEndpoint)
u := r.indexEndpoint.String() + "search?q=" + url.QueryEscape(term) u := r.indexEndpoint.String() + "search?q=" + url.QueryEscape(term) + "&n=" + url.QueryEscape(fmt.Sprintf("%d", limit))
req, err := http.NewRequest("GET", u, nil) req, err := http.NewRequest("GET", u, nil)
if err != nil { if err != nil {