cc23fdacff
Our registry client is not currently in a good place to be used as the reference OCI Distribution client implementation. But the registry proxy currently depends on it. Make the registry client internal to the distribution application to remove it from the API surface area (and any implied compatibility promises) of distribution/v3@v3.0.0 without breaking the proxy. Signed-off-by: Cory Snider <csnider@mirantis.com>
58 lines
1.6 KiB
Go
58 lines
1.6 KiB
Go
package auth
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import (
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"net/http"
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"strings"
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)
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// APIVersion represents a version of an API including its
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// type and version number.
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type APIVersion struct {
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// Type refers to the name of a specific API specification
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// such as "registry"
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Type string
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// Version is the version of the API specification implemented,
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// This may omit the revision number and only include
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// the major and minor version, such as "2.0"
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Version string
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}
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// String returns the string formatted API Version
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func (v APIVersion) String() string {
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return v.Type + "/" + v.Version
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}
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// APIVersions gets the API versions out of an HTTP response using the provided
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// version header as the key for the HTTP header.
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func APIVersions(resp *http.Response, versionHeader string) []APIVersion {
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versions := []APIVersion{}
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if versionHeader != "" {
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for _, supportedVersions := range resp.Header[http.CanonicalHeaderKey(versionHeader)] {
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for _, version := range strings.Fields(supportedVersions) {
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versions = append(versions, ParseAPIVersion(version))
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}
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}
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}
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return versions
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}
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// ParseAPIVersion parses an API version string into an APIVersion
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// Format (Expected, not enforced):
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// API version string = <API type> '/' <API version>
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// API type = [a-z][a-z0-9]*
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// API version = [0-9]+(\.[0-9]+)?
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// TODO(dmcgowan): Enforce format, add error condition, remove unknown type
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func ParseAPIVersion(versionStr string) APIVersion {
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idx := strings.IndexRune(versionStr, '/')
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if idx == -1 {
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return APIVersion{
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Type: "unknown",
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Version: versionStr,
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}
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}
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return APIVersion{
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Type: strings.ToLower(versionStr[:idx]),
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Version: versionStr[idx+1:],
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}
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}
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