37 lines
719 B
Markdown
37 lines
719 B
Markdown
---
|
|
layout: default
|
|
---
|
|
|
|
# Middleware Custom
|
|
|
|
<div class="mt-4 text-xs">
|
|
|
|
<v-click>
|
|
|
|
```typescript
|
|
import { createAgent, createMiddleware } from "langchain";
|
|
|
|
const loggingMiddleware = createMiddleware({
|
|
name: "LoggingMiddleware",
|
|
beforeModel: (state) => {
|
|
console.log(`Llamando modelo con ${state.messages.length} mensajes`);
|
|
return; // No modificar estado
|
|
},
|
|
afterModel: (state) => {
|
|
const lastMsg = state.messages[state.messages.length - 1];
|
|
console.log(`Modelo respondió: ${lastMsg.content?.slice(0, 50)}...`);
|
|
return;
|
|
},
|
|
});
|
|
|
|
const agent = createAgent({
|
|
model: "mistral:mistral-large-latest",
|
|
tools: [weatherTool],
|
|
middleware: [loggingMiddleware],
|
|
});
|
|
```
|
|
|
|
</v-click>
|
|
|
|
</div>
|