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Add error return to Repository method on Registry

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The method (Registry).Repository may now return an error. This is too allow
certain implementationt to validate the name or opt to not return a repository
under certain conditions.

In conjunction with this change, error declarations have been moved into a
single file in the distribution package. Several error declarations that had
remained in the storage package have been moved into distribution, as well. The
declarations for Layer and LayerUpload have also been moved into the main
registry file, as a result.

Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day 2015-02-13 13:59:50 -08:00
parent ed8827c3c2
commit 3e906311c6
10 changed files with 79 additions and 86 deletions
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8
docs/api/v2/names.go
View file

@ -6,6 +6,10 @@ import (
"strings"
)
// TODO(stevvooe): Move these definitions back to an exported package. While
// they are used with v2 definitions, their relevance expands beyond.
// "distribution/names" is a candidate package.
const (
// RepositoryNameComponentMinLength is the minimum number of characters in a
// single repository name slash-delimited component
@ -37,10 +41,6 @@ var RepositoryNameComponentRegexp = regexp.MustCompile(`[a-z0-9]+(?:[._-][a-z0-9
// RepositoryNameComponentRegexp which must completely match the content
var RepositoryNameComponentAnchoredRegexp = regexp.MustCompile(`^` + RepositoryNameComponentRegexp.String() + `$`)
// TODO(stevvooe): RepositoryName needs to be limited to some fixed length.
// Looking path prefixes and s3 limitation of 1024, this should likely be
// around 512 bytes. 256 bytes might be more manageable.
// RepositoryNameRegexp builds on RepositoryNameComponentRegexp to allow 1 to
// 5 path components, separated by a forward slash.
var RepositoryNameRegexp = regexp.MustCompile(`(?:` + RepositoryNameComponentRegexp.String() + `/){0,4}` + RepositoryNameComponentRegexp.String())