Failed to upload many source maps

[mkozak0108]

I'm having this error when trying to build our project.

ERROR in RollbarSourceMapPlugin: failed to upload 30.bundle.js.map to Rollbar: read ECONNRESET

We have one shared bundle and many bundles for each page.
Other bundles are uploaded and I can see them at Rollbar -> Settings -> Source Maps but randomly one of the files can't be uploaded.

Settings are

new RollbarSourceMapPlugin({
    accessToken: '-----------------------------',
    version: gitHash,
    publicPath: 'https://example'
  })

[skamps-duac-quizlet]

Have you resolved this? We are experiencing the same intermittent issue.

[brandondoran]

Rollbar occasionally has downtime. We've experiences this a few times and had to resort to setting ignoreErrors: true in this plugin's config to prevent deployments from being blocked. ECONNRESET is usually a server side error.

I'm creating a new issue to add retries: #73

[jakeNiemiec]

Also, consider rate limiting.

If you deploy the same code to 2 servers, both will spam rollbar with the same maps. I contacted rollbar support and they pointed out that the rate limits were configurable, eg https://help.rollbar.com/en/articles/2465466-are-deploys-rate-limited

[brandondoran]

@jakeNiemiec the only http requests this plugin makes is for uploading the sourcemaps to rollbar during the build. I don't think rate limiting is needed since there's only 1 request per sourcemap per build.

I believe that article is referring to rate limiting for the requests made be the application to rollbar at runtime for creating rollbar item occurences (rollbar.warning, rollbar.error, etc).

[brandondoran]

@jakeNiemiec I re-read and now agree that rate limiting could possibly affect this plugin's ability to upload sourcemaps. It's not likely the plugin would be the cause of hitting a rate limit but if you application is reporting lots of errors, your account could get rate limited and this could block your builds.

So I think this projects documentation should suggest creating a separate post_server_item for builds only, separate from the one used for runtime.

[jakeNiemiec]

This is the screen I was referring to (Settings > Setup > Project Access Tokens):

---

Project Access Tokens default to just 100 calls / 1 minute. Users that do even minor code-splitting will hit this limit.

I can confirm that ECONNRESET is the unhelpful error sent when you bump your head on this. It should be sending 429 Too Many Requests https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/429

@brandondoran Additionally, the plugin might be getting a 429, but is not setup to handle it or make use of the Retry-After header. I would test, but I wouldn't know the first thing about developing for a webpack plugin 😅.