Function executeTool

src/model/base-chat-service.ts:202–232

(call: ChatToolCall)

  // Execute tool.
  async executeTool(call: ChatToolCall) {
    if (this.pending)
      throw new Error('Can not execute tool when there is pending message.');
    this.pending = true;
    // Get tool and execute it.
    let tool: Tool;
    let result: ToolExecutionResult;
    try {
      tool = toolManager.getToolByName(call.name);
      result = await tool.execute(this.aborter.signal, call.arg);
    } catch(error) {
      if (error.name != 'AbortError')
        this.onExecuteToolError.emit(error);
      return;
    } finally {
      this.pending = false;
    }
    // Some tool does not handle abort signal and we have to manually abort
    // after tool finishes execution.
    if (this.isAborted()) {
      this.onExecuteToolError.emit(new AbortError());
      return;
    }
    // Send the result to API and wait for response.
    await this.sendMessage({
      role: ChatRole.Tool,
      content: result.resultForModel,
      toolName: tool.name,
      toolResult: result.resultForHuman,
    });
  }

  // Called when user clicks the reload button, should usually resend last user
  // message or regenerate last bot message.