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stream: always invoke end(cb) callback #29747

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stream: always invoke end(cb) callback #29747

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ronag
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@ronag ronag commented Sep 28, 2019 •
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Ensure that the callback passed into end() is always invoked in order to avoid bug such as deadlock the user.

Checklist
  • make -j4 test (UNIX), or vcbuild test (Windows) passes
  • tests and/or benchmarks are included
  • documentation is changed or added
  • commit message follows commit guidelines

@nodejs-github-bot nodejs-github-bot added the stream Issues and PRs related to the stream subsystem. label Sep 28, 2019
@ronag ronag mentioned this pull request Sep 28, 2019
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@ronag ronag force-pushed the stream-end-err-cb branch 4 times, most recently from 64bf430 to 9a45936 Compare September 28, 2019 14:19
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CI: https://ci.nodejs.org/job/node-test-pull-request/25753/

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CI: https://ci.nodejs.org/job/node-test-pull-request/25779/

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Trott commented Oct 1, 2019

@nodejs/streams

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mcollina approved these changes Oct 1, 2019
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LGTM, out of precaution I would mark this semver-major.

@mcollina mcollina added the semver-major PRs that contain breaking changes and should be released in the next major version. label Oct 1, 2019
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Trott commented Oct 1, 2019

CITGM: https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/2022/ (queued)

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mcollina commented Oct 2, 2019

I'm worried about https://www.npmjs.com/package/csv-parser failing on CITGM

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targos commented Oct 2, 2019 •
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csv-parser fails in all recent CITGM runs. It's not related to this change

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This change has an interesting side effect, and I think we should try to avoid it. Calling stream.end('hello', cb) is going to prevent the error to bubble up to 'uncaughtException' if there are no other 'error' handlers.
You might want to re-emit the error if there are no other 'error' listeners.

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ronag commented Oct 2, 2019

You might want to re-emit the error if there are no other 'error' listeners.

Excellent point. I'll take care of it.

@ronag ronag force-pushed the stream-end-err-cb branch 4 times, most recently from 1c093e6 to 35f00ac Compare October 2, 2019 15:01
@ronag ronag requested a review from mcollina October 2, 2019 17:39
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Trott commented Oct 2, 2019

For anyone following along in the conversation: csv-parser should be fixed by sindresorhus/execa#370 and is indeed unrelated to these changes

@ronag ronag requested review from jasnell and trivikr October 3, 2019 08:08
@ronag ronag mentioned this pull request Oct 6, 2019
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ronag commented Oct 6, 2019

Found another case where the callback is not called. Fixed.

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LGTM

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Trott commented Oct 11, 2019

Relevant test failures in test.parallel/test-stream-transform-final-sync and test.parallel/test-stream-transform-final.

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ronag commented Oct 11, 2019

@Trott: My mistake. Should be fixed now.

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@nodejs/tsc this needs some review

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ronag commented Nov 11, 2019 •
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@Trott: This needs TSC review (see Matteo's comment)? Can we put tsc label on this or how does that work?

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Trott commented Nov 12, 2019

@Trott: This needs TSC review (see Matteo's comment)? Can we put tsc label on this or how does that work?

I think @mcollina just meant that this is semver-major so it needed a second approval from a TSC member other than him. Subsequently, @jasnell approved it, and that would be the second approval. This can land if CITGM and CI are good.

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Trott commented Nov 12, 2019

CITGM: https://ci.nodejs.org/view/Node.js-citgm/job/citgm-smoker/2089/

@Trott Trott added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Nov 12, 2019
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addaleax pushed a commit that referenced this pull request Nov 19, 2019
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stream: always invoke end callback
9d09969 
Ensure that the callback passed into end() is always invoke in
order to avoid bug such as deadlock the user.

PR-URL: #29747
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
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Landed in 9d09969

@addaleax addaleax closed this Nov 19, 2019
@ronag ronag mentioned this pull request Dec 8, 2019
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@ronag ronag mentioned this pull request Jan 6, 2020
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@BethGriggs BethGriggs mentioned this pull request Mar 10, 2020
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@addaleax addaleax mentioned this pull request Mar 29, 2020
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@mcollina mcollina mcollina approved these changes

@jasnell jasnell jasnell approved these changes

@trivikr trivikr trivikr approved these changes

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