fix: Support Azure OpenAI

* Add configuration of OpenAI API version
* Add configuration of supportsDeveloperMessage
* If OpenAI API version is configured, use AzureOpenAI

Fixes #14711

packages/ai-openai/src/browser/openai-frontend-application-contribution.ts

@@ -91,6 +91,8 @@ export class OpenAiFrontendApplicationContribution implements FrontendApplicatio
                 model.model === newModel.model &&
                 model.url === newModel.url &&
                 model.apiKey === newModel.apiKey &&
+                model.apiVersion === newModel.apiVersion &&
+                model.supportsDeveloperMessage === newModel.supportsDeveloperMessage &&
                 model.enableStreaming === newModel.enableStreaming));
 
         this.manager.removeLanguageModels(...modelsToRemove.map(model => model.id));
@@ -113,6 +115,8 @@ export class OpenAiFrontendApplicationContribution implements FrontendApplicatio
             id: id,
             model: modelId,
             apiKey: true,
+            apiVersion: true,
+            supportsDeveloperMessage: !openAIModelsSupportingDeveloperMessages.includes(modelId),
             enableStreaming: !openAIModelsWithDisabledStreaming.includes(modelId),
             defaultRequestSettings: modelRequestSetting?.requestSettings
         };
@@ -136,6 +140,8 @@ export class OpenAiFrontendApplicationContribution implements FrontendApplicatio
                     model: pref.model,
                     url: pref.url,
                     apiKey: typeof pref.apiKey === 'string' || pref.apiKey === true ? pref.apiKey : undefined,
+                    apiVersion: typeof pref.apiVersion === 'string' || pref.apiVersion === true ? pref.apiVersion : undefined,
+                    supportsDeveloperMessage: pref.supportsDeveloperMessage ?? true,
                     enableStreaming: pref.enableStreaming ?? true,
                     defaultRequestSettings: modelRequestSetting?.requestSettings
                 }
@@ -160,3 +166,4 @@ export class OpenAiFrontendApplicationContribution implements FrontendApplicatio
 }
 
 const openAIModelsWithDisabledStreaming = ['o1-preview', 'o1-mini'];
+const openAIModelsSupportingDeveloperMessages = ['o1-preview', 'o1-mini'];

packages/ai-openai/src/browser/openai-preferences.ts

@@ -50,6 +50,10 @@ export const OpenAiPreferencesSchema: PreferenceSchema = {
             \n\
             - provide an `apiKey` to access the API served at the given url. Use `true` to indicate the use of the global OpenAI API key.\
             \n\
+            - provide an `apiVersion` to access the API served at the given url in Azure. Use `true` to indicate the use of the global OpenAI API version.\
+            \n\
+            - specify `supportsDeveloperMessage: false` to indicate that the developer role shall not be used.\
+            \n\
             - specify `enableStreaming: false` to indicate that streaming shall not be used.\
             \n\
             Refer to [our documentation](https://theia-ide.org/docs/user_ai/#openai-compatible-models-eg-via-vllm) for more information.',
@@ -73,6 +77,14 @@ export const OpenAiPreferencesSchema: PreferenceSchema = {
                         type: ['string', 'boolean'],
                         title: 'Either the key to access the API served at the given url or `true` to use the global OpenAI API key',
                     },
+                    apiVersion: {
+                        type: ['string', 'boolean'],
+                        title: 'Either the version to access the API served at the given url in Azure or `true` to use the global OpenAI API version',
+                    },
+                    supportsDeveloperMessage: {
+                        type: 'boolean',
+                        title: 'Indicates whether the model supports the `developer` role. `true` by default.',
+                    },
                     enableStreaming: {
                         type: 'boolean',
                         title: 'Indicates whether the streaming API shall be used. `true` by default.',

packages/ai-openai/src/common/openai-language-models-manager.ts

@@ -32,10 +32,18 @@ export interface OpenAiModelDescription {
      * The key for the model. If 'true' is provided the global OpenAI API key will be used.
      */
     apiKey: string | true | undefined;
+    /**
+     * The version for the model. If 'true' is provided the global OpenAI version will be used.
+     */
+    apiVersion: string | true | undefined;
     /**
      * Indicate whether the streaming API shall be used.
      */
     enableStreaming: boolean;
+    /**
+     * Flag to configure whether the OpenAPI model supports the `developer` role. Default is `true`.
+     */
+    supportsDeveloperMessage: boolean;
     /**
      * Default request settings for the OpenAI model.
      */
@@ -44,6 +52,7 @@ export interface OpenAiModelDescription {
 export interface OpenAiLanguageModelsManager {
     apiKey: string | undefined;
     setApiKey(key: string | undefined): void;
+    setApiVersion(version: string | undefined): void;
     createOrUpdateLanguageModels(...models: OpenAiModelDescription[]): Promise<void>;
     removeLanguageModels(...modelIds: string[]): void
 }

packages/ai-openai/src/node/openai-language-model.ts

@@ -24,7 +24,7 @@ import {
     LanguageModelTextResponse
 } from '@theia/ai-core';
 import { CancellationToken } from '@theia/core';
-import OpenAI from 'openai';
+import { OpenAI, AzureOpenAI } from 'openai';
 import { ChatCompletionStream } from 'openai/lib/ChatCompletionStream';
 import { RunnableToolFunctionWithoutParse } from 'openai/lib/RunnableFunction';
 import { ChatCompletionMessageParam } from 'openai/resources';
@@ -38,6 +38,8 @@ export class OpenAiModel implements LanguageModel {
      * @param model the model id as it is used by the OpenAI API
      * @param enableStreaming whether the streaming API shall be used
      * @param apiKey a function that returns the API key to use for this model, called on each request
+     * @param apiVersion a function that returns the OpenAPI version to use for this model, called on each request
+     * @param supportsDeveloperMessage whether the model supports the `developer` role
      * @param url the OpenAI API compatible endpoint where the model is hosted. If not provided the default OpenAI endpoint will be used.
      * @param defaultRequestSettings optional default settings for requests made using this model.
      */
@@ -46,6 +48,8 @@ export class OpenAiModel implements LanguageModel {
         public model: string,
         public enableStreaming: boolean,
         public apiKey: () => string | undefined,
+        public apiVersion: () => string | undefined,
+        public supportsDeveloperMessage: boolean,
         public url: string | undefined,
         public defaultRequestSettings?: { [key: string]: unknown }
     ) { }
@@ -164,7 +168,7 @@ export class OpenAiModel implements LanguageModel {
     protected toOpenAiRole(message: LanguageModelRequestMessage): 'developer' | 'user' | 'assistant' {
         switch (message.actor) {
             case 'system':
-                return this.supportsDeveloperMessage() ? 'developer' : 'user';
+                return this.supportsDeveloperMessage ? 'developer' : 'user';
             case 'ai':
                 return 'assistant';
             default:
@@ -185,13 +189,6 @@ export class OpenAiModel implements LanguageModel {
         ].includes(this.model);
     }
 
-    protected supportsDeveloperMessage(): boolean {
-        return ![
-            'o1-preview',
-            'o1-mini'
-        ].includes(this.model);
-    }
-
     protected async handleStructuredOutputRequest(openai: OpenAI, request: LanguageModelRequest): Promise<LanguageModelParsedResponse> {
         const settings = this.getSettings(request);
         // TODO implement tool support for structured output (parse() seems to require different tool format)
@@ -235,7 +232,14 @@ export class OpenAiModel implements LanguageModel {
         if (!apiKey && !(this.url)) {
             throw new Error('Please provide OPENAI_API_KEY in preferences or via environment variable');
         }
-        // We need to hand over "some" key, even if a custom url is not key protected as otherwise the OpenAI client will throw an error
-        return new OpenAI({ apiKey: apiKey ?? 'no-key', baseURL: this.url });
+
+        const apiVersion = this.apiVersion();
+        if (apiVersion) {
+            // We need to hand over "some" key, even if a custom url is not key protected as otherwise the OpenAI client will throw an error
+            return new AzureOpenAI({ apiKey: apiKey ?? 'no-key', baseURL: this.url, apiVersion: apiVersion });
+        } else {
+            // We need to hand over "some" key, even if a custom url is not key protected as otherwise the OpenAI client will throw an error
+            return new OpenAI({ apiKey: apiKey ?? 'no-key', baseURL: this.url });
+        }
     }
 }

packages/ai-openai/src/node/openai-language-models-manager-impl.ts

@@ -23,6 +23,7 @@ import { OpenAiLanguageModelsManager, OpenAiModelDescription } from '../common';
 export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsManager {
 
     protected _apiKey: string | undefined;
+    protected _apiVersion: string | undefined;
 
     @inject(LanguageModelRegistry)
     protected readonly languageModelRegistry: LanguageModelRegistry;
@@ -31,6 +32,10 @@ export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsMana
         return this._apiKey ?? process.env.OPENAI_API_KEY;
     }
 
+    get apiVersion(): string | undefined {
+        return this._apiVersion ?? process.env.OPENAI_API_VERSION;
+    }
+
     // Triggered from frontend. In case you want to use the models on the backend
     // without a frontend then call this yourself
     async createOrUpdateLanguageModels(...modelDescriptions: OpenAiModelDescription[]): Promise<void> {
@@ -45,6 +50,15 @@ export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsMana
                 }
                 return undefined;
             };
+            const apiVersionProvider = () => {
+                if (modelDescription.apiVersion === true) {
+                    return this.apiVersion;
+                }
+                if (modelDescription.apiVersion) {
+                    return modelDescription.apiVersion;
+                }
+                return undefined;
+            };
 
             if (model) {
                 if (!(model instanceof OpenAiModel)) {
@@ -55,6 +69,8 @@ export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsMana
                 model.enableStreaming = modelDescription.enableStreaming;
                 model.url = modelDescription.url;
                 model.apiKey = apiKeyProvider;
+                model.apiVersion = apiVersionProvider;
+                model.supportsDeveloperMessage = modelDescription.supportsDeveloperMessage;
                 model.defaultRequestSettings = modelDescription.defaultRequestSettings;
             } else {
                 this.languageModelRegistry.addLanguageModels([
@@ -63,6 +79,8 @@ export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsMana
                         modelDescription.model,
                         modelDescription.enableStreaming,
                         apiKeyProvider,
+                        apiVersionProvider,
+                        modelDescription.supportsDeveloperMessage,
                         modelDescription.url,
                         modelDescription.defaultRequestSettings
                     )
@@ -82,4 +100,12 @@ export class OpenAiLanguageModelsManagerImpl implements OpenAiLanguageModelsMana
             this._apiKey = undefined;
         }
     }
+
+    setApiVersion(apiVersion: string | undefined): void {
+        if (apiVersion) {
+            this._apiVersion = apiVersion;
+        } else {
+            this._apiVersion = undefined;
+        }
+    }
 }