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🐛 BUG: wrangler tail crashes when encountering a log from a Durable Object alarm invocation

See original GitHub issue

What version of `Wrangler` are you using?

2.0.22

What operating system are you using?

Linux (also happens on Mac)

Describe the Bug

Wrangler tail crashes if it gets sent a log from a DO alarm invocation. To repro:

Deploy a DO that uses alarms, such as the example from https://blog.cloudflare.com/durable-objects-alarms/
Start a wrangler tail session on that script
Send a request to a DO that will cause an alarm to be run in the near future
When the alarm finally runs, wrangler tail will print an error and exit.

The error I’ve been getting is:

/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:16907
            throw ex;
            ^

TypeError: Cannot read properties of undefined (reading 'method')
    at WebSocket3.prettyPrintLogs (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:127428:54)
    at WebSocket3.emit (node:events:527:28)
    at Receiver2.receiverOnMessage (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:85301:24)
    at Receiver2.emit (node:events:527:28)
    at Receiver2.dataMessage (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:84002:18)
    at Receiver2.getData (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:83965:21)
    at Receiver2.startLoop (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:83820:27)
    at Receiver2._write (/home/arobinson/.npm/_npx/32026684e21afda6/node_modules/wrangler/wrangler-dist/cli.js:83777:14)
    at writeOrBuffer (node:internal/streams/writable:389:12)
    at _write (node:internal/streams/writable:330:10)

@xortive has pointed out that https://github.com/cloudflare/wrangler2/blob/main/packages/wrangler/src/tail/printing.ts “seems to assume all non-scheduled events are http and pukes when trying to pull the request method out”

Issue Analytics

State:
Created a year ago
Comments:7 (7 by maintainers)

Top GitHub Comments

1reaction

a-robinsoncommented, Jul 26, 2022

It does not fail when using --json. Here’s an example:

{
  "outcome": "ok",
  "scriptName": "my-worker-name-here",
  "exceptions": [],
  "logs": [
    {
      "message": [
        "my message here"
      ],
      "level": "log",
      "timestamp": 1658843798477
    }
  ],
  "eventTimestamp": 1658843798474,
  "event": {
    "scheduledTime": "2022-07-26T13:56:38.473Z"
  }
}

0reactions

a-robinsoncommented, Aug 1, 2022

Perfect, works great!

Alarm @ 8/1/2022, 3:58:43 PM - Ok
  (log) [...]

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