chore: Support LangGraph

packages/langchain/src/orchestration/__snapshots__/client.test.ts.snap

@@ -5,13 +5,43 @@ exports[`orchestration service client returns successful response when maxRetrie
   "id": [
     "langchain_core",
     "messages",
-    "OrchestrationMessage",
+    "AIMessage",
   ],
   "kwargs": {
     "additional_kwargs": {
       "finish_reason": "stop",
       "function_call": undefined,
       "index": 0,
+      "module_results": {
+        "llm": {
+          "choices": [
+            {
+              "finish_reason": "stop",
+              "index": 0,
+              "message": {
+                "content": "Hello! How can I assist you today?",
+                "role": "assistant",
+              },
+            },
+          ],
+          "created": 172,
+          "id": "llm-id",
+          "model": "gpt-4o",
+          "object": "chat.completion",
+          "usage": {
+            "completion_tokens": 9,
+            "prompt_tokens": 9,
+            "total_tokens": 18,
+          },
+        },
+        "templating": [
+          {
+            "content": "Hello!",
+            "role": "user",
+          },
+        ],
+      },
+      "request_id": "request-id",
       "tool_calls": undefined,
     },
     "content": "Hello! How can I assist you today?",
@@ -44,13 +74,43 @@ exports[`orchestration service client returns successful response when timeout i
   "id": [
     "langchain_core",
     "messages",
-    "OrchestrationMessage",
+    "AIMessage",
   ],
   "kwargs": {
     "additional_kwargs": {
       "finish_reason": "stop",
       "function_call": undefined,
       "index": 0,
+      "module_results": {
+        "llm": {
+          "choices": [
+            {
+              "finish_reason": "stop",
+              "index": 0,
+              "message": {
+                "content": "Hello! How can I assist you today?",
+                "role": "assistant",
+              },
+            },
+          ],
+          "created": 172,
+          "id": "llm-id",
+          "model": "gpt-4o",
+          "object": "chat.completion",
+          "usage": {
+            "completion_tokens": 9,
+            "prompt_tokens": 9,
+            "total_tokens": 18,
+          },
+        },
+        "templating": [
+          {
+            "content": "Hello!",
+            "role": "user",
+          },
+        ],
+      },
+      "request_id": "request-id",
       "tool_calls": undefined,
     },
     "content": "Hello! How can I assist you today?",

packages/langchain/src/orchestration/util.ts

@@ -1,4 +1,4 @@
-import { OrchestrationMessage } from './orchestration-message.js';
+import { AIMessage } from '@langchain/core/messages';
 import type { ChatResult } from '@langchain/core/outputs';
 import type {
   ChatMessage,
@@ -8,7 +8,6 @@ import type {
 import type { ToolCall } from '@langchain/core/messages/tool';
 import type { AzureOpenAiChatCompletionMessageToolCalls } from '@sap-ai-sdk/foundation-models';
 import type {
-  AIMessage,
   BaseMessage,
   HumanMessage,
   SystemMessage
@@ -140,22 +139,20 @@ export function mapOutputToChatResult(
   return {
     generations: choices.map(choice => ({
       text: choice.message.content ?? '',
-      message: new OrchestrationMessage(
-        {
-          content: choice.message.content ?? '',
-          tool_calls: mapAzureOpenAiToLangchainToolCall(
-            choice.message.tool_calls
-          ),
-          additional_kwargs: {
-            finish_reason: choice.finish_reason,
-            index: choice.index,
-            function_call: choice.message.function_call,
-            tool_calls: choice.message.tool_calls
-          }
-        },
-        module_results,
-        request_id
-      ),
+      message: new AIMessage({
+        content: choice.message.content ?? '',
+        tool_calls: mapAzureOpenAiToLangchainToolCall(
+          choice.message.tool_calls
+        ),
+        additional_kwargs: {
+          finish_reason: choice.finish_reason,
+          index: choice.index,
+          function_call: choice.message.function_call,
+          tool_calls: choice.message.tool_calls,
+          module_results,
+          request_id
+        }
+      }),
       generationInfo: {
         finish_reason: choice.finish_reason,
         index: choice.index,

pnpm-workspace.yaml

@@ -1,14 +1,15 @@
 packages:
-  - 'packages/ai-api'
-  - 'packages/core'
-  - 'packages/foundation-models'
-  - 'packages/langchain'
-  - 'packages/orchestration'
-  - 'packages/document-grounding'
-  - 'packages/prompt-registry'
-  - 'sample-cap'
-  - 'sample-code'
-  - 'tests/e2e-tests'
-  - 'tests/schema-tests'
-  - 'tests/smoke-tests'
-  - 'tests/type-tests'
+  - packages/ai-api
+  - packages/core
+  - packages/foundation-models
+  - packages/langchain
+  - packages/orchestration
+  - packages/document-grounding
+  - packages/prompt-registry
+  - sample-cap
+  - sample-code
+  - tests/e2e-tests
+  - tests/schema-tests
+  - tests/smoke-tests
+  - tests/type-tests
+

sample-code/package.json

@@ -20,19 +20,21 @@
     "lint:fix": "eslint . --fix && prettier . --config ../.prettierrc --ignore-path ../.prettierignore -w --log-level error"
   },
   "dependencies": {
+    "@langchain/langgraph": "^0.2.62",
+    "langchain": "0.3.21",
+    "@langchain/core": "0.3.45",
+    "@langchain/textsplitters": "0.1.0",
     "@sap-ai-sdk/ai-api": "workspace:^",
+    "@sap-ai-sdk/document-grounding": "workspace:^",
     "@sap-ai-sdk/foundation-models": "workspace:^",
-    "@sap-ai-sdk/orchestration": "workspace:^",
     "@sap-ai-sdk/langchain": "workspace:^",
-    "@sap-ai-sdk/document-grounding": "workspace:^",
+    "@sap-ai-sdk/orchestration": "workspace:^",
     "@sap-ai-sdk/prompt-registry": "workspace:^",
-    "langchain": "0.3.21",
-    "@langchain/core": "0.3.45",
-    "@langchain/textsplitters": "0.1.0",
     "@sap-cloud-sdk/util": "^4.0.2",
     "@types/express": "^5.0.1",
     "express": "^5.1.0",
-    "zod-to-json-schema": "^3.24.5",
-    "zod": "^3.24.3"
+    "uuid": "^11.1.0",
+    "zod": "^3.24.2",
+    "zod-to-json-schema": "^3.24.5"
   }
 }

sample-code/src/index.ts

@@ -29,7 +29,10 @@ export {
   invokeChain,
   invokeRagChain
 } from './langchain-azure-openai.js';
-export { invokeChain as orchestrationInvokeChain } from './langchain-orchestration.js';
+export {
+  invokeChain as orchestrationInvokeChain,
+  invokeLangGraphChain
+} from './langchain-orchestration.js';
 export {
   getDeployments,
   getDeploymentsWithDestination,