chore: Add around tool calling execution

Signed-off-by: 虎鸣 <[email protected]>

Author: He-Pin

spring-ai-model/src/main/java/org/springframework/ai/model/tool/DefaultToolCallingManager.java

@@ -203,7 +203,7 @@ private InternalToolExecutionResult executeToolCall(Prompt prompt, AssistantMess
 
 			String toolResult;
 			try {
-				toolResult = toolCallback.call(toolInputArguments, toolContext);
+				toolResult = aroundToolCallingExecution(toolCallback, toolInputArguments, toolContext);
 			}
 			catch (ToolExecutionException ex) {
 				toolResult = this.toolExecutionExceptionProcessor.process(ex);
@@ -215,6 +215,14 @@ private InternalToolExecutionResult executeToolCall(Prompt prompt, AssistantMess
 		return new InternalToolExecutionResult(new ToolResponseMessage(toolResponses, Map.of()), returnDirect);
 	}
 
+	/**
+	 * Been added to allow for custom behavior around tool execution.
+	 */
+	protected String aroundToolCallingExecution(ToolCallback toolCallback, String toolInputArguments,
+			ToolContext toolContext) {
+		return toolCallback.call(toolInputArguments, toolContext);
+	}
+
 	private List<Message> buildConversationHistoryAfterToolExecution(List<Message> previousMessages,
 			AssistantMessage assistantMessage, ToolResponseMessage toolResponseMessage) {
 		List<Message> messages = new ArrayList<>(previousMessages);