feat(scheduler): add endpoint to retrieve model configurations

cmd/cli/commands/configure.go

@@ -11,9 +11,10 @@ func newConfigureCmd() *cobra.Command {
 	var flags ConfigureFlags
 
 	c := &cobra.Command{
-		Use:    "configure [--context-size=<n>] [--speculative-draft-model=<model>] [--hf_overrides=<json>] [--gpu-memory-utilization=<float>] [--mode=<mode>] [--think] MODEL [-- <runtime-flags...>]",
-		Short:  "Configure runtime options for a model",
-		Hidden: true,
+		Use:     "configure [--context-size=<n>] [--speculative-draft-model=<model>] [--hf_overrides=<json>] [--gpu-memory-utilization=<float>] [--mode=<mode>] [--think] MODEL [-- <runtime-flags...>]",
+		Aliases: []string{"config"},
+		Short:   "Manage model runtime configurations",
+		Hidden:  true,
 		Args: func(cmd *cobra.Command, args []string) error {
 			argsBeforeDash := cmd.ArgsLenAtDash()
 			if argsBeforeDash == -1 {
@@ -48,5 +49,6 @@ func newConfigureCmd() *cobra.Command {
 	}
 
 	flags.RegisterFlags(c)
+	c.AddCommand(newConfigureShowCmd())
 	return c
 }

cmd/cli/commands/configure_show.go

@@ -0,0 +1,35 @@
+package commands
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/docker/model-runner/cmd/cli/commands/completion"
+	"github.com/spf13/cobra"
+)
+
+func newConfigureShowCmd() *cobra.Command {
+	c := &cobra.Command{
+		Use:   "show [MODEL]",
+		Short: "Show model configurations",
+		Args:  cobra.MaximumNArgs(1),
+		RunE: func(cmd *cobra.Command, args []string) error {
+			var modelFilter string
+			if len(args) > 0 {
+				modelFilter = args[0]
+			}
+			configs, err := desktopClient.ShowConfigs(modelFilter)
+			if err != nil {
+				return err
+			}
+			jsonResult, err := json.MarshalIndent(configs, "", "  ")
+			if err != nil {
+				return fmt.Errorf("failed to marshal configs to JSON: %w", err)
+			}
+			cmd.Println(string(jsonResult))
+			return nil
+		},
+		ValidArgsFunction: completion.ModelNames(getDesktopClient, 1),
+	}
+	return c
+}

cmd/cli/desktop/desktop.go

@@ -670,6 +670,35 @@ func (c *Client) Unload(req UnloadRequest) (UnloadResponse, error) {
 	return unloadResp, nil
 }
 
+func (c *Client) ShowConfigs(modelFilter string) ([]scheduling.ModelConfigEntry, error) {
+	configureBackendPath := inference.InferencePrefix + "/_configure"
+	if modelFilter != "" {
+		configureBackendPath += "?model=" + url.QueryEscape(modelFilter)
+	}
+	resp, err := c.doRequest(http.MethodGet, configureBackendPath, nil)
+	if err != nil {
+		return nil, c.handleQueryError(err, configureBackendPath)
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		body, _ := io.ReadAll(resp.Body)
+		return nil, fmt.Errorf("listing configs failed with status %s: %s", resp.Status, string(body))
+	}
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return nil, fmt.Errorf("failed to read response body: %w", err)
+	}
+
+	var configs []scheduling.ModelConfigEntry
+	if err := json.Unmarshal(body, &configs); err != nil {
+		return nil, fmt.Errorf("failed to unmarshal response body: %w", err)
+	}
+
+	return configs, nil
+}
+
 func (c *Client) ConfigureBackend(request scheduling.ConfigureRequest) error {
 	configureBackendPath := inference.InferencePrefix + "/_configure"
 	jsonData, err := json.Marshal(request)

cmd/cli/docs/reference/docker_model_configure.yaml

@@ -1,9 +1,14 @@
 command: docker model configure
-short: Configure runtime options for a model
-long: Configure runtime options for a model
+aliases: docker model configure, docker model config
+short: Manage model runtime configurations
+long: Manage model runtime configurations
 usage: docker model configure [--context-size=<n>] [--speculative-draft-model=<model>] [--hf_overrides=<json>] [--gpu-memory-utilization=<float>] [--mode=<mode>] [--think] MODEL [-- <runtime-flags...>]
 pname: docker model
 plink: docker_model.yaml
+cname:
+    - docker model configure show
+clink:
+    - docker_model_configure_show.yaml
 options:
     - option: context-size
       value_type: int32

cmd/cli/docs/reference/docker_model_configure_show.yaml

@@ -0,0 +1,13 @@
+command: docker model configure show
+short: Show model configurations
+long: Show model configurations
+usage: docker model configure show [MODEL]
+pname: docker model configure
+plink: docker_model_configure.yaml
+deprecated: false
+hidden: true
+experimental: false
+experimentalcli: false
+kubernetes: false
+swarm: false
+

pkg/inference/backend.go

@@ -2,6 +2,8 @@ package inference
 
 import (
 	"context"
+	"encoding/json"
+	"fmt"
 	"net/http"
 )
 
@@ -40,6 +42,25 @@ func (m BackendMode) String() string {
 	}
 }
 
+// MarshalJSON implements json.Marshaler for BackendMode.
+func (m BackendMode) MarshalJSON() ([]byte, error) {
+	return []byte(`"` + m.String() + `"`), nil
+}
+
+// UnmarshalJSON implements json.Unmarshaler for BackendMode.
+func (m *BackendMode) UnmarshalJSON(data []byte) error {
+	var s string
+	if err := json.Unmarshal(data, &s); err != nil {
+		return err
+	}
+	mode, ok := ParseBackendMode(s)
+	if !ok {
+		return fmt.Errorf("unknown backend mode: %q", s)
+	}
+	*m = mode
+	return nil
+}
+
 // ParseBackendMode converts a string mode to BackendMode.
 // It returns the parsed mode and a boolean indicating if the mode was known.
 // For unknown modes, it returns BackendModeCompletion and false.

pkg/inference/scheduling/api.go

@@ -98,3 +98,12 @@ type ConfigureRequest struct {
 	RawRuntimeFlags string                 `json:"raw-runtime-flags,omitempty"`
 	inference.BackendConfiguration
 }
+
+// ModelConfigEntry represents a model configuration entry with its associated metadata.
+type ModelConfigEntry struct {
+	Backend string
+	Model   string
+	ModelID string
+	Mode    inference.BackendMode
+	Config  inference.BackendConfiguration
+}

pkg/inference/scheduling/http_handler.go

@@ -84,6 +84,7 @@ func (h *HTTPHandler) routeHandlers() map[string]http.HandlerFunc {
 	m["POST "+inference.InferencePrefix+"/unload"] = h.Unload
 	m["POST "+inference.InferencePrefix+"/{backend}/_configure"] = h.Configure
 	m["POST "+inference.InferencePrefix+"/_configure"] = h.Configure
+	m["GET "+inference.InferencePrefix+"/_configure"] = h.GetModelConfigs
 	m["GET "+inference.InferencePrefix+"/requests"] = h.scheduler.openAIRecorder.GetRecordsHandler()
 	return m
 }
@@ -350,6 +351,31 @@ func (h *HTTPHandler) Configure(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusAccepted)
 }
 
+// GetModelConfigs returns model configurations. If a model is specified in the query parameter,
+// returns only configs for that model; otherwise returns all configs.
+func (h *HTTPHandler) GetModelConfigs(w http.ResponseWriter, r *http.Request) {
+	model := r.URL.Query().Get("model")
+
+	configs := h.scheduler.loader.getAllRunnerConfigs(r.Context())
+
+	if model != "" {
+		modelID := h.scheduler.modelManager.ResolveID(model)
+		filtered := configs[:0]
+		for _, entry := range configs {
+			if entry.ModelID == modelID {
+				filtered = append(filtered, entry)
+			}
+		}
+		configs = filtered
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	if err := json.NewEncoder(w).Encode(configs); err != nil {
+		http.Error(w, fmt.Sprintf("Failed to encode response: %v", err), http.StatusInternalServerError)
+		return
+	}
+}
+
 // ServeHTTP implements net/http.Handler.ServeHTTP.
 func (h *HTTPHandler) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	h.lock.RLock()

pkg/inference/scheduling/loader.go

@@ -626,3 +626,30 @@ func (l *loader) setRunnerConfig(ctx context.Context, backendName, modelID strin
 	l.runnerConfigs[configKey] = runnerConfig
 	return nil
 }
+
+// getAllRunnerConfigs retrieves all runner configurations.
+func (l *loader) getAllRunnerConfigs(ctx context.Context) []ModelConfigEntry {
+	if !l.lock(ctx) {
+		return nil
+	}
+	defer l.unlock()
+
+	entries := make([]ModelConfigEntry, 0, len(l.runnerConfigs))
+	for key, config := range l.runnerConfigs {
+		model, err := l.modelManager.GetLocal(key.modelID)
+		if err == nil {
+			modelName := ""
+			if len(model.Tags()) > 0 {
+				modelName = model.Tags()[0]
+			}
+			entries = append(entries, ModelConfigEntry{
+				Backend: key.backend,
+				Model:   modelName,
+				ModelID: key.modelID,
+				Mode:    key.mode,
+				Config:  config,
+			})
+		}
+	}
+	return entries
+}