Tarko 基于 事件驱动架构 构建,所有 Agent 交互都表示为流中的事件。这使得实时监控、调试和上下文管理等强大功能成为可能。
Tarko 定义了几种核心事件类型:
{
type: 'user_message',
content: '你好,可以帮助我吗?',
timestamp: '2025-01-01T00:00:00Z'
}{
type: 'assistant_message',
content: '我很乐意帮助你!',
timestamp: '2025-01-01T00:00:01Z'
}{
type: 'tool_call',
toolCall: {
id: 'call_123',
function: {
name: 'getWeather',
arguments: '{"location": "Boston"}'
}
},
timestamp: '2025-01-01T00:00:02Z'
}
{
type: 'tool_result',
toolCallId: 'call_123',
toolName: 'getWeather',
result: { temperature: 72, condition: 'sunny' },
timestamp: '2025-01-01T00:00:03Z'
}{
type: 'context_updated',
data: {
reason: 'compression',
newLength: 8000,
timestamp: '2025-01-01T00:00:04Z'
}
}通过事件流处理器订阅事件:
import { Agent } from '@tarko/agent';
const agent = new Agent(config);
const eventStream = agent.getEventStream();
// 监听所有事件
eventStream.on('event', (event) => {
console.log('事件:', event.type);
});
// 监听特定事件类型
eventStream.on('tool_call', (event) => {
console.log('调用工具:', event.toolCall.function.name);
});
eventStream.on('assistant_message', (event) => {
console.log('Agent 响应:', event.content);
});实时处理事件:
const eventProcessor = {
async processEvent(event) {
switch (event.type) {
case 'tool_call':
// 记录工具使用
await logToolUsage(event.toolCall);
break;
case 'assistant_message':
// 更新 UI
await updateUI(event.content);
break;
case 'error':
// 处理错误
await handleError(event.error);
break;
}
}
};
eventStream.on('event', eventProcessor.processEvent);对于 Web 应用,事件可以通过 SSE 流式传输:
// 服务器
app.get('/agent/stream', (req, res) => {
res.writeHead(200, {
'Content-Type': 'text/event-stream',
'Cache-Control': 'no-cache',
'Connection': 'keep-alive'
});
const eventStream = agent.getEventStream();
eventStream.on('event', (event) => {
res.write(`data: ${JSON.stringify(event)}\n\n`);
});
});// 客户端
const eventSource = new EventSource('/agent/stream');
eventSource.onmessage = (event) => {
const agentEvent = JSON.parse(event.data);
handleAgentEvent(agentEvent);
};事件可以持久化以供回放和分析:
const agent = new Agent({
...config,
persistence: {
enabled: true,
storage: 'file', // 或 'redis', 'mongodb'
path: './agent-events.jsonl'
}
});基于条件过滤事件:
agent.on('event', (event) => {
// 只处理工具相关事件
if (event.type.startsWith('tool_')) {
processToolEvent(event);
}
});