feat: Add support for listing running Ollama models (#451)

Co-authored-by: David Miguel <me@davidmiguel.com>

packages/ollama_dart/README.md

@@ -31,6 +31,7 @@ Unofficial Dart client for [Ollama](https://ollama.ai/) API.
   * [Models](#models)
     + [Create model](#create-model)
     + [List models](#list-models)
+    + [List running models](#list-running-models)
     + [Show Model Information](#show-model-information)
     + [Pull a Model](#pull-a-model)
     + [Push a Model](#push-a-model)
@@ -192,6 +193,15 @@ final res = await client.listModels();
 print(res.models);
 ```
 
+#### List running models
+
+Lists models currently loaded and their memory footprint.
+
+```dart
+final res = await client.listRunningModels();
+print(res.models);
+```
+
 #### Show Model Information
 
 Show details about a model including modelfile, template, parameters, license, and system prompt.

packages/ollama_dart/lib/src/generated/client.dart

@@ -477,6 +477,25 @@ class OllamaClient {
     return ModelsResponse.fromJson(_jsonDecode(r));
   }
 
+  // ------------------------------------------
+  // METHOD: listRunningModels
+  // ------------------------------------------
+
+  /// List models that are running.
+  ///
+  /// `GET` `http://localhost:11434/api/ps`
+  Future<ProcessResponse> listRunningModels() async {
+    final r = await makeRequest(
+      baseUrl: 'http://localhost:11434/api',
+      path: '/ps',
+      method: HttpMethod.get,
+      isMultipart: false,
+      requestType: '',
+      responseType: 'application/json',
+    );
+    return ProcessResponse.fromJson(_jsonDecode(r));
+  }
+
   // ------------------------------------------
   // METHOD: showModelInfo
   // ------------------------------------------
@@ -567,7 +586,7 @@ class OllamaClient {
       method: HttpMethod.post,
       isMultipart: false,
       requestType: 'application/json',
-      responseType: 'application/json',
+      responseType: 'application/x-ndjson',
       body: request,
     );
     return PullModelResponse.fromJson(_jsonDecode(r));
@@ -593,7 +612,7 @@ class OllamaClient {
       method: HttpMethod.post,
       isMultipart: false,
       requestType: 'application/json',
-      responseType: 'application/json',
+      responseType: 'application/x-ndjson',
       body: request,
     );
     return PushModelResponse.fromJson(_jsonDecode(r));

packages/ollama_dart/lib/src/generated/schema/process_model.dart

@@ -0,0 +1,69 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: invalid_annotation_target
+part of ollama_schema;
+
+// ==========================================
+// CLASS: ProcessModel
+// ==========================================
+
+/// A model that is currently loaded.
+@freezed
+class ProcessModel with _$ProcessModel {
+  const ProcessModel._();
+
+  /// Factory constructor for ProcessModel
+  const factory ProcessModel({
+    /// The model name.
+    ///
+    /// Model names follow a `model:tag` format. Some examples are `orca-mini:3b-q4_1` and `llama3:70b`. The tag is optional and, if not provided, will default to `latest`. The tag is used to identify a specific version.
+    @JsonKey(includeIfNull: false) String? model,
+
+    /// Size of the model on disk.
+    @JsonKey(includeIfNull: false) int? size,
+
+    /// The model's digest.
+    @JsonKey(includeIfNull: false) String? digest,
+
+    /// Details about a model.
+    @JsonKey(includeIfNull: false) ModelDetails? details,
+
+    /// No Description
+    @JsonKey(name: 'expires_at', includeIfNull: false) String? expiresAt,
+
+    /// Size of the model on disk.
+    @JsonKey(name: 'size_vram', includeIfNull: false) int? sizeVram,
+  }) = _ProcessModel;
+
+  /// Object construction from a JSON representation
+  factory ProcessModel.fromJson(Map<String, dynamic> json) =>
+      _$ProcessModelFromJson(json);
+
+  /// List of all property names of schema
+  static const List<String> propertyNames = [
+    'model',
+    'size',
+    'digest',
+    'details',
+    'expires_at',
+    'size_vram'
+  ];
+
+  /// Perform validations on the schema property values
+  String? validateSchema() {
+    return null;
+  }
+
+  /// Map representation of object (not serialized)
+  Map<String, dynamic> toMap() {
+    return {
+      'model': model,
+      'size': size,
+      'digest': digest,
+      'details': details,
+      'expires_at': expiresAt,
+      'size_vram': sizeVram,
+    };
+  }
+}

packages/ollama_dart/lib/src/generated/schema/process_response.dart

@@ -0,0 +1,40 @@
+// coverage:ignore-file
+// GENERATED CODE - DO NOT MODIFY BY HAND
+// ignore_for_file: type=lint
+// ignore_for_file: invalid_annotation_target
+part of ollama_schema;
+
+// ==========================================
+// CLASS: ProcessResponse
+// ==========================================
+
+/// Response class for the list running models endpoint.
+@freezed
+class ProcessResponse with _$ProcessResponse {
+  const ProcessResponse._();
+
+  /// Factory constructor for ProcessResponse
+  const factory ProcessResponse({
+    /// List of running models.
+    @JsonKey(includeIfNull: false) List<ProcessModel>? models,
+  }) = _ProcessResponse;
+
+  /// Object construction from a JSON representation
+  factory ProcessResponse.fromJson(Map<String, dynamic> json) =>
+      _$ProcessResponseFromJson(json);
+
+  /// List of all property names of schema
+  static const List<String> propertyNames = ['models'];
+
+  /// Perform validations on the schema property values
+  String? validateSchema() {
+    return null;
+  }
+
+  /// Map representation of object (not serialized)
+  Map<String, dynamic> toMap() {
+    return {
+      'models': models,
+    };
+  }
+}

packages/ollama_dart/lib/src/generated/schema/schema.dart

@@ -26,6 +26,8 @@ part 'create_model_status.dart';
 part 'models_response.dart';
 part 'model.dart';
 part 'model_details.dart';
+part 'process_response.dart';
+part 'process_model.dart';
 part 'model_info_request.dart';
 part 'model_info.dart';
 part 'copy_model_request.dart';