How to stream/get logs from background process

[boopeshmahendran227]

I have a vite project in sandbox and running a vite dev server using sandbox.commands.run by passing background: true. How to get the logs from this process. I tried connecting and getting logs, but it is not working. Below is the code I tried.

const devServerCommand = await sandbox.commands.connect(devServerPid);
return devServerCommand.stdout.trim()

[linear]

E2B-2870 How to stream/get logs from background process

[mishushakov]

Hey, you can try the following:

const process = await sandbox.commands.run(
  "python -u -m http.server 8000", // example
  {
    background: true,
    onStdout: (data) => {
      console.log(data);
    },
    onStderr: (data) => {
      console.log(data);
    },
    timeoutMs: 0,
  }
);

[mishushakov]

Here's another example how you can achieve this if you want to connect to pid directly

const { pid } = await sandbox.commands.run("python -u -m http.server 8000", {
  background: true,
  timeoutMs: 0,
});

console.log("Background process started with PID:", pid);

const process = await sandbox.commands.connect(pid, {
  onStdout: (data) => {
    console.log(data);
  },
  onStderr: (data) => {
    console.log(data);
  },
  timeoutMs: 0,
});

// alternatively
// setInterval(async () => {
//  console.log(process.stdout);
// }, 1000);