add show command (#474)

api/client.go

@@ -255,6 +255,14 @@ func (c *Client) Delete(ctx context.Context, req *DeleteRequest) error {
 	return nil
 }
 
+func (c *Client) Show(ctx context.Context, req *ShowRequest) (*ShowResponse, error) {
+	var resp ShowResponse
+	if err := c.do(ctx, http.MethodPost, "/api/show", req, &resp); err != nil {
+		return nil, err
+	}
+	return &resp, nil
+}
+
 func (c *Client) Heartbeat(ctx context.Context) error {
 	if err := c.do(ctx, http.MethodHead, "/", nil, nil); err != nil {
 		return err

api/types.go

@@ -61,6 +61,18 @@ type DeleteRequest struct {
 	Name string `json:"name"`
 }
 
+type ShowRequest struct {
+	Name string `json:"name"`
+}
+
+type ShowResponse struct {
+	License    string `json:"license,omitempty"`
+	Modelfile  string `json:"modelfile,omitempty"`
+	Parameters string `json:"parameters,omitempty"`
+	Template   string `json:"template,omitempty"`
+	System     string `json:"system,omitempty"`
+}
+
 type CopyRequest struct {
 	Source      string `json:"source"`
 	Destination string `json:"destination"`

cmd/cmd.go

@@ -230,6 +230,84 @@ func DeleteHandler(cmd *cobra.Command, args []string) error {
 	return nil
 }
 
+func ShowHandler(cmd *cobra.Command, args []string) error {
+	client, err := api.FromEnv()
+	if err != nil {
+		return err
+	}
+
+	if len(args) != 1 {
+		return errors.New("missing model name")
+	}
+
+	license, errLicense := cmd.Flags().GetBool("license")
+	modelfile, errModelfile := cmd.Flags().GetBool("modelfile")
+	parameters, errParams := cmd.Flags().GetBool("parameters")
+	system, errSystem := cmd.Flags().GetBool("system")
+	template, errTemplate := cmd.Flags().GetBool("template")
+
+	for _, boolErr := range []error{errLicense, errModelfile, errParams, errSystem, errTemplate} {
+		if boolErr != nil {
+			return errors.New("error retrieving flags")
+		}
+	}
+
+	flagsSet := 0
+	showType := ""
+
+	if license {
+		flagsSet++
+		showType = "license"
+	}
+
+	if modelfile {
+		flagsSet++
+		showType = "modelfile"
+	}
+
+	if parameters {
+		flagsSet++
+		showType = "parameters"
+	}
+
+	if system {
+		flagsSet++
+		showType = "system"
+	}
+
+	if template {
+		flagsSet++
+		showType = "template"
+	}
+
+	if flagsSet > 1 {
+		return errors.New("only one of 'license', 'modelfile', 'parameters', 'system', or 'template' can be set")
+	} else if flagsSet == 0 {
+		return errors.New("one of 'license', 'modelfile', 'parameters', 'system', or 'template' must be set")
+	}
+
+	req := api.ShowRequest{Name: args[0]}
+	resp, err := client.Show(context.Background(), &req)
+	if err != nil {
+		return err
+	}
+
+	switch showType {
+	case "license":
+		fmt.Println(resp.License)
+	case "modelfile":
+		fmt.Println(resp.Modelfile)
+	case "parameters":
+		fmt.Println(resp.Parameters)
+	case "system":
+		fmt.Println(resp.System)
+	case "template":
+		fmt.Println(resp.Template)
+	}
+
+	return nil
+}
+
 func CopyHandler(cmd *cobra.Command, args []string) error {
 	client, err := api.FromEnv()
 	if err != nil {
@@ -377,20 +455,6 @@ func generate(cmd *cobra.Command, model, prompt string) error {
 	return nil
 }
 
-func showLayer(l *server.Layer) {
-	filename, err := server.GetBlobsPath(l.Digest)
-	if err != nil {
-		fmt.Println("Couldn't get layer's path")
-		return
-	}
-	bts, err := os.ReadFile(filename)
-	if err != nil {
-		fmt.Println("Couldn't read layer")
-		return
-	}
-	fmt.Println(string(bts))
-}
-
 func generateInteractive(cmd *cobra.Command, model string) error {
 	home, err := os.UserHomeDir()
 	if err != nil {
@@ -413,6 +477,8 @@ func generateInteractive(cmd *cobra.Command, model string) error {
 		),
 		readline.PcItem("/show",
 			readline.PcItem("license"),
+			readline.PcItem("modelfile"),
+			readline.PcItem("parameters"),
 			readline.PcItem("system"),
 			readline.PcItem("template"),
 		),
@@ -522,42 +588,28 @@ func generateInteractive(cmd *cobra.Command, model string) error {
 		case strings.HasPrefix(line, "/show"):
 			args := strings.Fields(line)
 			if len(args) > 1 {
-				mp := server.ParseModelPath(model)
+				resp, err := server.GetModelInfo(model)
 				if err != nil {
-					return err
-				}
-
-				manifest, _, err := server.GetManifest(mp)
-				if err != nil {
-					fmt.Println("error: couldn't get a manifest for this model")
+					fmt.Println("error: couldn't get model")
 					continue
 				}
+
 				switch args[1] {
 				case "license":
-					for _, l := range manifest.Layers {
-						if l.MediaType == "application/vnd.ollama.image.license" {
-							showLayer(l)
-						}
-					}
-					continue
+					fmt.Println(resp.License)
+				case "modelfile":
+					fmt.Println(resp.Modelfile)
+				case "parameters":
+					fmt.Println(resp.Parameters)
 				case "system":
-					for _, l := range manifest.Layers {
-						if l.MediaType == "application/vnd.ollama.image.system" {
-							showLayer(l)
-						}
-					}
-					continue
+					fmt.Println(resp.System)
 				case "template":
-					for _, l := range manifest.Layers {
-						if l.MediaType == "application/vnd.ollama.image.template" {
-							showLayer(l)
-						}
-					}
-					continue
+					fmt.Println(resp.Template)
 				default:
-					usage()
-					continue
+					fmt.Println("error: unknown command")
 				}
+
+				continue
 			} else {
 				usage()
 				continue
@@ -749,6 +801,20 @@ func NewCLI() *cobra.Command {
 
 	createCmd.Flags().StringP("file", "f", "Modelfile", "Name of the Modelfile (default \"Modelfile\")")
 
+	showCmd := &cobra.Command{
+		Use:     "show MODEL",
+		Short:   "Show information for a model",
+		Args:    cobra.MinimumNArgs(1),
+		PreRunE: checkServerHeartbeat,
+		RunE:    ShowHandler,
+	}
+
+	showCmd.Flags().Bool("license", false, "Show license of a model")
+	showCmd.Flags().Bool("modelfile", false, "Show Modelfile of a model")
+	showCmd.Flags().Bool("parameters", false, "Show parameters of a model")
+	showCmd.Flags().Bool("template", false, "Show template of a model")
+	showCmd.Flags().Bool("system", false, "Show system prompt of a model")
+
 	runCmd := &cobra.Command{
 		Use:     "run MODEL [PROMPT]",
 		Short:   "Run a model",
@@ -814,6 +880,7 @@ func NewCLI() *cobra.Command {
 	rootCmd.AddCommand(
 		serveCmd,
 		createCmd,
+		showCmd,
 		runCmd,
 		pullCmd,
 		pushCmd,

server/images.go

@@ -41,15 +41,18 @@ type RegistryOptions struct {
 }
 
 type Model struct {
-	Name         string `json:"name"`
-	ModelPath    string
-	AdapterPaths []string
-	Template     string
-	System       string
-	Digest       string
-	ConfigDigest string
-	Options      map[string]interface{}
-	Embeddings   []vector.Embedding
+	Name          string `json:"name"`
+	ShortName     string
+	ModelPath     string
+	OriginalModel string
+	AdapterPaths  []string
+	Template      string
+	System        string
+	License       []string
+	Digest        string
+	ConfigDigest  string
+	Options       map[string]interface{}
+	Embeddings    []vector.Embedding
 }
 
 func (m *Model) Prompt(request api.GenerateRequest, embedding string) (string, error) {
@@ -171,9 +174,11 @@ func GetModel(name string) (*Model, error) {
 
 	model := &Model{
 		Name:         mp.GetFullTagname(),
+		ShortName:    mp.GetShortTagname(),
 		Digest:       digest,
 		ConfigDigest: manifest.Config.Digest,
 		Template:     "{{ .Prompt }}",
+		License:      []string{},
 	}
 
 	for _, layer := range manifest.Layers {
@@ -185,6 +190,7 @@ func GetModel(name string) (*Model, error) {
 		switch layer.MediaType {
 		case "application/vnd.ollama.image.model":
 			model.ModelPath = filename
+			model.OriginalModel = layer.From
 		case "application/vnd.ollama.image.embed":
 			file, err := os.Open(filename)
 			if err != nil {
@@ -229,6 +235,12 @@ func GetModel(name string) (*Model, error) {
 			if err = json.NewDecoder(params).Decode(&model.Options); err != nil {
 				return nil, err
 			}
+		case "application/vnd.ollama.image.license":
+			bts, err := os.ReadFile(filename)
+			if err != nil {
+				return nil, err
+			}
+			model.License = append(model.License, string(bts))
 		}
 	}
 
@@ -933,6 +945,83 @@ func DeleteModel(name string) error {
 	return nil
 }
 
+func ShowModelfile(model *Model) (string, error) {
+	type modelTemplate struct {
+		*Model
+		From   string
+		Params string
+	}
+
+	var params []string
+	for k, v := range model.Options {
+		switch val := v.(type) {
+		case string:
+			params = append(params, fmt.Sprintf("PARAMETER %s %s", k, val))
+		case int:
+			params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.Itoa(val)))
+		case float64:
+			params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.FormatFloat(val, 'f', 0, 64)))
+		case bool:
+			params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.FormatBool(val)))
+		case []interface{}:
+			for _, nv := range val {
+				switch nval := nv.(type) {
+				case string:
+					params = append(params, fmt.Sprintf("PARAMETER %s %s", k, nval))
+				case int:
+					params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.Itoa(nval)))
+				case float64:
+					params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.FormatFloat(nval, 'f', 0, 64)))
+				case bool:
+					params = append(params, fmt.Sprintf("PARAMETER %s %s", k, strconv.FormatBool(nval)))
+				default:
+					log.Printf("unknown type: %s", reflect.TypeOf(nv).String())
+				}
+			}
+		default:
+			log.Printf("unknown type: %s", reflect.TypeOf(v).String())
+		}
+	}
+
+	mt := modelTemplate{
+		Model:  model,
+		From:   model.OriginalModel,
+		Params: strings.Join(params, "\n"),
+	}
+
+	if mt.From == "" {
+		mt.From = model.ModelPath
+	}
+
+	modelFile := `# Modelfile generated by "ollama show"
+# To build a new Modelfile based on this one, replace the FROM line with:
+# FROM {{ .ShortName }}
+
+FROM {{ .From }}
+TEMPLATE """{{ .Template }}"""
+SYSTEM """{{ .System }}"""
+{{ .Params }}
+`
+	for _, l := range mt.Model.AdapterPaths {
+		modelFile += fmt.Sprintf("ADAPTER %s\n", l)
+	}
+
+	tmpl, err := template.New("").Parse(modelFile)
+	if err != nil {
+		log.Printf("error parsing template: %q", err)
+		return "", err
+	}
+
+	var buf bytes.Buffer
+
+	if err = tmpl.Execute(&buf, mt); err != nil {
+		log.Printf("error executing template: %q", err)
+		return "", err
+	}
+
+	return buf.String(), nil
+}
+
 func PushModel(ctx context.Context, name string, regOpts *RegistryOptions, fn func(api.ProgressResponse)) error {
 	mp := ParseModelPath(name)
 	fn(api.ProgressResponse{Status: "retrieving manifest"})

server/routes.go

@@ -12,6 +12,7 @@ import (
 	"os/signal"
 	"path/filepath"
 	"reflect"
+	"strconv"
 	"strings"
 	"sync"
 	"syscall"
@@ -364,6 +365,77 @@ func DeleteModelHandler(c *gin.Context) {
 	}
 }
 
+func ShowModelHandler(c *gin.Context) {
+	var req api.ShowRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
+		return
+	}
+
+	resp, err := GetModelInfo(req.Name)
+	if err != nil {
+		if os.IsNotExist(err) {
+			c.JSON(http.StatusNotFound, gin.H{"error": fmt.Sprintf("model '%s' not found", req.Name)})
+		} else {
+			c.JSON(http.StatusInternalServerError, gin.H{"error": err.Error()})
+		}
+		return
+	}
+
+	c.JSON(http.StatusOK, resp)
+}
+
+func GetModelInfo(name string) (*api.ShowResponse, error) {
+	model, err := GetModel(name)
+	if err != nil {
+		return nil, err
+	}
+
+	resp := &api.ShowResponse{
+		License:  strings.Join(model.License, "\n"),
+		System:   model.System,
+		Template: model.Template,
+	}
+
+	mf, err := ShowModelfile(model)
+	if err != nil {
+		return nil, err
+	}
+
+	resp.Modelfile = mf
+
+	var params []string
+	cs := 30
+	for k, v := range model.Options {
+		switch val := v.(type) {
+		case string:
+			params = append(params, fmt.Sprintf("%-*s %s", cs, k, val))
+		case int:
+			params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.Itoa(val)))
+		case float64:
+			params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.FormatFloat(val, 'f', 0, 64)))
+		case bool:
+			params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.FormatBool(val)))
+		case []interface{}:
+			for _, nv := range val {
+				switch nval := nv.(type) {
+				case string:
+					params = append(params, fmt.Sprintf("%-*s %s", cs, k, nval))
+				case int:
+					params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.Itoa(nval)))
+				case float64:
+					params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.FormatFloat(nval, 'f', 0, 64)))
+				case bool:
+					params = append(params, fmt.Sprintf("%-*s %s", cs, k, strconv.FormatBool(nval)))
+				}
+			}
+		}
+	}
+	resp.Parameters = strings.Join(params, "\n")
+
+	return resp, nil
+}
+
 func ListModelsHandler(c *gin.Context) {
 	var models []api.ModelResponse
 	fp, err := GetManifestPath()
@@ -457,6 +529,7 @@ func Serve(ln net.Listener, origins []string) error {
 	r.POST("/api/copy", CopyModelHandler)
 	r.GET("/api/tags", ListModelsHandler)
 	r.DELETE("/api/delete", DeleteModelHandler)
+	r.POST("/api/show", ShowModelHandler)
 
 	log.Printf("Listening on %s", ln.Addr())
 	s := &http.Server{