mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
c79b9bab54
Signed-off-by: Antonio Murdaca <me@runcom.ninja>
227 lines
5.7 KiB
Go
227 lines
5.7 KiB
Go
package registry
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import (
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"fmt"
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log "github.com/Sirupsen/logrus"
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"github.com/docker/docker/engine"
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)
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// Service exposes registry capabilities in the standard Engine
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// interface. Once installed, it extends the engine with the
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// following calls:
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//
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// 'auth': Authenticate against the public registry
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// 'search': Search for images on the public registry
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// 'pull': Download images from any registry (TODO)
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// 'push': Upload images to any registry (TODO)
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type Service struct {
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Config *ServiceConfig
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}
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// NewService returns a new instance of Service ready to be
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// installed no an engine.
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func NewService(options *Options) *Service {
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return &Service{
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Config: NewServiceConfig(options),
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}
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}
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// Install installs registry capabilities to eng.
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func (s *Service) Install(eng *engine.Engine) error {
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eng.Register("auth", s.Auth)
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eng.Register("search", s.Search)
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eng.Register("resolve_repository", s.ResolveRepository)
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eng.Register("resolve_index", s.ResolveIndex)
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eng.Register("registry_config", s.GetRegistryConfig)
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return nil
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}
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// Auth contacts the public registry with the provided credentials,
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// and returns OK if authentication was sucessful.
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// It can be used to verify the validity of a client's credentials.
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func (s *Service) Auth(job *engine.Job) error {
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var (
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authConfig = new(AuthConfig)
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endpoint *Endpoint
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index *IndexInfo
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status string
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err error
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)
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job.GetenvJson("authConfig", authConfig)
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addr := authConfig.ServerAddress
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if addr == "" {
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// Use the official registry address if not specified.
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addr = IndexServerAddress()
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}
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if index, err = ResolveIndexInfo(job, addr); err != nil {
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return err
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}
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if endpoint, err = NewEndpoint(index); err != nil {
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log.Errorf("unable to get new registry endpoint: %s", err)
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return err
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}
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authConfig.ServerAddress = endpoint.String()
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if status, err = Login(authConfig, endpoint, HTTPRequestFactory(nil)); err != nil {
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log.Errorf("unable to login against registry endpoint %s: %s", endpoint, err)
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return err
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}
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log.Infof("successful registry login for endpoint %s: %s", endpoint, status)
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job.Printf("%s\n", status)
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return nil
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}
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// Search queries the public registry for images matching the specified
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// search terms, and returns the results.
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//
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// Argument syntax: search TERM
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//
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// Option environment:
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// 'authConfig': json-encoded credentials to authenticate against the registry.
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// The search extends to images only accessible via the credentials.
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//
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// 'metaHeaders': extra HTTP headers to include in the request to the registry.
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// The headers should be passed as a json-encoded dictionary.
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//
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// Output:
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// Results are sent as a collection of structured messages (using engine.Table).
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// Each result is sent as a separate message.
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// Results are ordered by number of stars on the public registry.
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func (s *Service) Search(job *engine.Job) error {
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if n := len(job.Args); n != 1 {
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return fmt.Errorf("Usage: %s TERM", job.Name)
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}
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var (
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term = job.Args[0]
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metaHeaders = map[string][]string{}
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authConfig = &AuthConfig{}
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)
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job.GetenvJson("authConfig", authConfig)
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job.GetenvJson("metaHeaders", metaHeaders)
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repoInfo, err := ResolveRepositoryInfo(job, term)
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if err != nil {
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return err
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}
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// *TODO: Search multiple indexes.
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endpoint, err := repoInfo.GetEndpoint()
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if err != nil {
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return err
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}
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r, err := NewSession(authConfig, HTTPRequestFactory(metaHeaders), endpoint, true)
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if err != nil {
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return err
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}
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results, err := r.SearchRepositories(repoInfo.GetSearchTerm())
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if err != nil {
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return err
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}
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outs := engine.NewTable("star_count", 0)
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for _, result := range results.Results {
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out := &engine.Env{}
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out.Import(result)
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outs.Add(out)
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}
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outs.ReverseSort()
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if _, err := outs.WriteListTo(job.Stdout); err != nil {
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return err
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}
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return nil
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}
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// ResolveRepository splits a repository name into its components
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// and configuration of the associated registry.
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func (s *Service) ResolveRepository(job *engine.Job) error {
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var (
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reposName = job.Args[0]
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)
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repoInfo, err := s.Config.NewRepositoryInfo(reposName)
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if err != nil {
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return err
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}
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out := engine.Env{}
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err = out.SetJson("repository", repoInfo)
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if err != nil {
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return err
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}
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out.WriteTo(job.Stdout)
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return nil
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}
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// Convenience wrapper for calling resolve_repository Job from a running job.
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func ResolveRepositoryInfo(jobContext *engine.Job, reposName string) (*RepositoryInfo, error) {
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job := jobContext.Eng.Job("resolve_repository", reposName)
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env, err := job.Stdout.AddEnv()
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if err != nil {
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return nil, err
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}
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if err := job.Run(); err != nil {
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return nil, err
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}
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info := RepositoryInfo{}
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if err := env.GetJson("repository", &info); err != nil {
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return nil, err
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}
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return &info, nil
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}
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// ResolveIndex takes indexName and returns index info
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func (s *Service) ResolveIndex(job *engine.Job) error {
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var (
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indexName = job.Args[0]
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)
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index, err := s.Config.NewIndexInfo(indexName)
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if err != nil {
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return err
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}
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out := engine.Env{}
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err = out.SetJson("index", index)
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if err != nil {
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return err
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}
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out.WriteTo(job.Stdout)
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return nil
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}
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// Convenience wrapper for calling resolve_index Job from a running job.
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func ResolveIndexInfo(jobContext *engine.Job, indexName string) (*IndexInfo, error) {
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job := jobContext.Eng.Job("resolve_index", indexName)
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env, err := job.Stdout.AddEnv()
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if err != nil {
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return nil, err
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}
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if err := job.Run(); err != nil {
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return nil, err
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}
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info := IndexInfo{}
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if err := env.GetJson("index", &info); err != nil {
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return nil, err
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}
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return &info, nil
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}
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// GetRegistryConfig returns current registry configuration.
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func (s *Service) GetRegistryConfig(job *engine.Job) error {
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out := engine.Env{}
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err := out.SetJson("config", s.Config)
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if err != nil {
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return err
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}
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out.WriteTo(job.Stdout)
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return nil
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}
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