package images import ( "context" "fmt" "io" "net/http" "net/url" "strconv" "github.com/containers/podman/v3/pkg/api/handlers/types" "github.com/containers/podman/v3/pkg/auth" "github.com/containers/podman/v3/pkg/bindings" "github.com/containers/podman/v3/pkg/domain/entities" "github.com/containers/podman/v3/pkg/domain/entities/reports" "github.com/pkg/errors" ) // Exists a lightweight way to determine if an image exists in local storage. It returns a // boolean response. func Exists(ctx context.Context, nameOrID string, options *ExistsOptions) (bool, error) { conn, err := bindings.GetClient(ctx) if err != nil { return false, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/exists", nil, nil, nameOrID) if err != nil { return false, err } return response.IsSuccess(), nil } // List returns a list of images in local storage. The all boolean and filters parameters are optional // ways to alter the image query. func List(ctx context.Context, options *ListOptions) ([]*entities.ImageSummary, error) { if options == nil { options = new(ListOptions) } var imageSummary []*entities.ImageSummary conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/json", params, nil) if err != nil { return imageSummary, err } return imageSummary, response.Process(&imageSummary) } // Get performs an image inspect. To have the on-disk size of the image calculated, you can // use the optional size parameter. func GetImage(ctx context.Context, nameOrID string, options *GetOptions) (*entities.ImageInspectReport, error) { if options == nil { options = new(GetOptions) } conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } inspectedData := entities.ImageInspectReport{} response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/json", params, nil, nameOrID) if err != nil { return &inspectedData, err } return &inspectedData, response.Process(&inspectedData) } // Tree retrieves a "tree" based representation of the given image func Tree(ctx context.Context, nameOrID string, options *TreeOptions) (*entities.ImageTreeReport, error) { if options == nil { options = new(TreeOptions) } var report entities.ImageTreeReport conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/tree", params, nil, nameOrID) if err != nil { return nil, err } return &report, response.Process(&report) } // History returns the parent layers of an image. func History(ctx context.Context, nameOrID string, options *HistoryOptions) ([]*types.HistoryResponse, error) { if options == nil { options = new(HistoryOptions) } _ = options var history []*types.HistoryResponse conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/%s/history", nil, nil, nameOrID) if err != nil { return history, err } return history, response.Process(&history) } func Load(ctx context.Context, r io.Reader) (*entities.ImageLoadReport, error) { var report entities.ImageLoadReport conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } response, err := conn.DoRequest(r, http.MethodPost, "/images/load", nil, nil) if err != nil { return nil, err } return &report, response.Process(&report) } // Export saves images from local storage as a tarball or image archive. The optional format // parameter is used to change the format of the output. func Export(ctx context.Context, nameOrIDs []string, w io.Writer, options *ExportOptions) error { if options == nil { options = new(ExportOptions) } conn, err := bindings.GetClient(ctx) if err != nil { return err } params, err := options.ToParams() if err != nil { return err } for _, ref := range nameOrIDs { params.Add("references", ref) } response, err := conn.DoRequest(nil, http.MethodGet, "/images/export", params, nil) if err != nil { return err } if response.StatusCode/100 == 2 || response.StatusCode/100 == 3 { _, err = io.Copy(w, response.Body) return err } return response.Process(nil) } // Prune removes unused images from local storage. The optional filters can be used to further // define which images should be pruned. func Prune(ctx context.Context, options *PruneOptions) ([]*reports.PruneReport, error) { var ( deleted []*reports.PruneReport ) if options == nil { options = new(PruneOptions) } conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodPost, "/images/prune", params, nil) if err != nil { return deleted, err } err = response.Process(&deleted) return deleted, err } // Tag adds an additional name to locally-stored image. Both the tag and repo parameters are required. func Tag(ctx context.Context, nameOrID, tag, repo string, options *TagOptions) error { if options == nil { options = new(TagOptions) } _ = options conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} params.Set("tag", tag) params.Set("repo", repo) response, err := conn.DoRequest(nil, http.MethodPost, "/images/%s/tag", params, nil, nameOrID) if err != nil { return err } return response.Process(nil) } // Untag removes a name from locally-stored image. Both the tag and repo parameters are required. func Untag(ctx context.Context, nameOrID, tag, repo string, options *UntagOptions) error { if options == nil { options = new(UntagOptions) } _ = options conn, err := bindings.GetClient(ctx) if err != nil { return err } params := url.Values{} params.Set("tag", tag) params.Set("repo", repo) response, err := conn.DoRequest(nil, http.MethodPost, "/images/%s/untag", params, nil, nameOrID) if err != nil { return err } return response.Process(nil) } // Imports adds the given image to the local image store. This can be done by file and the given reader // or via the url parameter. Additional metadata can be associated with the image by using the changes and // message parameters. The image can also be tagged given a reference. One of url OR r must be provided. func Import(ctx context.Context, r io.Reader, options *ImportOptions) (*entities.ImageImportReport, error) { if options == nil { options = new(ImportOptions) } var report entities.ImageImportReport if r != nil && options.URL != nil { return nil, errors.New("url and r parameters cannot be used together") } conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } response, err := conn.DoRequest(r, http.MethodPost, "/images/import", params, nil) if err != nil { return nil, err } return &report, response.Process(&report) } // Push is the binding for libpod's v2 endpoints for push images. Note that // `source` must be a referring to an image in the remote's container storage. // The destination must be a reference to a registry (i.e., of docker transport // or be normalized to one). Other transports are rejected as they do not make // sense in a remote context. func Push(ctx context.Context, source string, destination string, options *PushOptions) error { if options == nil { options = new(PushOptions) } conn, err := bindings.GetClient(ctx) if err != nil { return err } // TODO: have a global system context we can pass around (1st argument) header, err := auth.Header(nil, auth.XRegistryAuthHeader, options.GetAuthfile(), options.GetUsername(), options.GetPassword()) if err != nil { return err } params, err := options.ToParams() if err != nil { return err } //SkipTLSVerify is special. We need to delete the param added by //toparams and change the key and flip the bool if options.SkipTLSVerify != nil { params.Del("SkipTLSVerify") params.Set("tlsVerify", strconv.FormatBool(!options.GetSkipTLSVerify())) } params.Set("destination", destination) path := fmt.Sprintf("/images/%s/push", source) response, err := conn.DoRequest(nil, http.MethodPost, path, params, header) if err != nil { return err } return response.Process(err) } // Search is the binding for libpod's v2 endpoints for Search images. func Search(ctx context.Context, term string, options *SearchOptions) ([]entities.ImageSearchReport, error) { if options == nil { options = new(SearchOptions) } conn, err := bindings.GetClient(ctx) if err != nil { return nil, err } params, err := options.ToParams() if err != nil { return nil, err } params.Set("term", term) // Note: we have to verify if skipped is false. if options.SkipTLSVerify != nil { params.Del("SkipTLSVerify") params.Set("tlsVerify", strconv.FormatBool(!options.GetSkipTLSVerify())) } // TODO: have a global system context we can pass around (1st argument) header, err := auth.Header(nil, auth.XRegistryAuthHeader, options.GetAuthfile(), "", "") if err != nil { return nil, err } response, err := conn.DoRequest(nil, http.MethodGet, "/images/search", params, header) if err != nil { return nil, err } results := []entities.ImageSearchReport{} if err := response.Process(&results); err != nil { return nil, err } return results, nil }