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async_hooks: introduce mandatory store argument in AsyncLocalStorage run methods #31930

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async_hooks: introduce mandatory store argument in AsyncLocalStorage run methods #31930

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puzpuzpuz
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@puzpuzpuz puzpuzpuz commented Feb 24, 2020 •
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This PR introduces store as the first argument in AsyncLocalStorage's .run*() methods. The change is motivated by the following expectation: most users are going to use a custom object
as the store and an extra Map created by the old implementation is an overhead for their use case.

Important note. This is a backwards incompatible change. But as AsyncLocalStorage API has just landed into master (9c70292), it should be OK.

This PR implements the most simple (and as I believe, the most convenient for users) option from this discussion thread: #26540 (comment)

cc @vdeturckheim, @Qard, @Flarna

API change

Both run methods now have .run*(store, callback[, ..args]) signature instead of the old .run*(callback[, ..args]). For users who want to use a Map this change simply means

asyncLocalStorage.run(new Map(), () => /* ... */)

call instead of

asyncLocalStorage.run(() => /* ... */)
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 async_hooks Issues and PRs related to the async hooks subsystem. label Feb 24, 2020
@vdeturckheim
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@nodejs/tsc this is a breaking change but for something that has not been shipped in any release yet. I don't think we have anything in the processes for this case. Do we need an extra step to land this?

@vdeturckheim vdeturckheim self-assigned this Feb 24, 2020
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CI: https://ci.nodejs.org/job/node-test-pull-request/29303/

@targos targos mentioned this pull request Feb 24, 2020
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targos commented Feb 24, 2020

@nodejs/tsc this is a breaking change but for something that has not been shipped in any release yet. I don't think we have anything in the processes for this case. Do we need an extra step to land this?

I added backport-blocked label to #26540 so it doesn't land in a release before this change.
In general, breaking changes to experimental features can land in any release, as long as we document them.

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thanks @targos ! I will merge this in 48 (well 44) hours then :D

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CI: https://ci.nodejs.org/job/node-test-pull-request/29304/

mcollina
mcollina approved these changes Feb 24, 2020
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lgtm, definitely better

@vdeturckheim vdeturckheim removed their assignment Feb 24, 2020
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CI: https://ci.nodejs.org/job/node-test-pull-request/29306/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29308/

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Many thanks for your code reviews, guys!

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CI: https://ci.nodejs.org/job/node-test-pull-request/29310/

mhdawson
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LGTM

@Qard Qard mentioned this pull request Feb 25, 2020
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@puzpuzpuz The title of the commit is longer than 72 columns and therefore does not follow the commit message guidelines can you please ammend it?

@puzpuzpuz
async_hooks: introduce store argument in AsyncLocalStorage run methods
69e65a5 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
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@vdeturckheim

@puzpuzpuz The title of the commit is longer than 72 columns and therefore does not follow the commit message guidelines can you please ammend it?

Thanks for pointing this out. Should be fixed now.

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CI: https://ci.nodejs.org/job/node-test-pull-request/29378/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29379/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29380/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29381/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29382/

@nodejs nodejs deleted a comment from nodejs-github-bot Feb 26, 2020
@nodejs nodejs deleted a comment from nodejs-github-bot Feb 26, 2020
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CI: https://ci.nodejs.org/job/node-test-pull-request/29384/

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CI seems constantly blocked on something that is not related to this PR :/

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CI: https://ci.nodejs.org/job/node-test-pull-request/29388/

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vdeturckheim commented Feb 26, 2020 •
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For some reason node-test-linux-linked-debug does not start when I restart the build. however, I restarted it standalone, it passes https://ci.nodejs.org/job/node-test-commit-linux-containered/nodes=ubuntu1804_sharedlibs_debug_x64/18302/

This is ready to merge.
It's a bit late here and I'm travelling tomorrow, feel free to land it otherwise I'll do it on Friday.

@vdeturckheim vdeturckheim mentioned this pull request Feb 27, 2020
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Last CI run does look good, will land.

mhdawson pushed a commit that referenced this pull request Feb 27, 2020
@puzpuzpuz @mhdawson
async_hooks: add store arg in AsyncLocalStorage
6510a74 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
It was discussed and agreed an incompatible change is ok
since the API is still experimental and the modified
methods were only added within the last week so usage
will be minimal to none.

PR-URL: #31930
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
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mhdawson commented Feb 27, 2020 •
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Landed as 6510a74

@nodejs/tsc FYI that this has not been marked as SemVer major due to the following rational agreed in the PR and documented in the commit message: Important note. This is a backwards incompatible change. It was discussed and agreed an incompatible change is ok since the API is still experimental and the modified methods were only added within the last week so usage will be minimal to none.

@mhdawson mhdawson closed this Feb 27, 2020
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Thanks @mhdawson !

codebytere pushed a commit that referenced this pull request Feb 27, 2020
@puzpuzpuz @codebytere
async_hooks: add store arg in AsyncLocalStorage
f71fc90 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
It was discussed and agreed an incompatible change is ok
since the API is still experimental and the modified
methods were only added within the last week so usage
will be minimal to none.

PR-URL: #31930
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
@Qard Qard mentioned this pull request Feb 28, 2020
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@puzpuzpuz puzpuzpuz deleted the async-storage-custom-store branch February 28, 2020 06:47
@codebytere codebytere mentioned this pull request Feb 29, 2020
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Blocked on #32131.

@puzpuzpuz puzpuzpuz mentioned this pull request Mar 17, 2020
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v12 backport: #32318

puzpuzpuz added a commit to puzpuzpuz/node that referenced this pull request Apr 14, 2020
@puzpuzpuz
async_hooks: add store arg in AsyncLocalStorage
bedb27e 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
It was discussed and agreed an incompatible change is ok
since the API is still experimental and the modified
methods were only added within the last week so usage
will be minimal to none.

PR-URL: nodejs#31930
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
targos pushed a commit to targos/node that referenced this pull request Apr 25, 2020
@puzpuzpuz @targos
async_hooks: add store arg in AsyncLocalStorage
c43bd50 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
It was discussed and agreed an incompatible change is ok
since the API is still experimental and the modified
methods were only added within the last week so usage
will be minimal to none.

PR-URL: nodejs#31930
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
targos pushed a commit that referenced this pull request Apr 28, 2020
@puzpuzpuz @targos
async_hooks: add store arg in AsyncLocalStorage
96d1f14 
This commit introduces store as the first argument in
AsyncLocalStorage's run methods. The change is motivated by the
following expectation: most users are going to use a custom object
as the store and an extra Map created by the previous implementation
is an overhead for their use case.

Important note. This is a backwards incompatible change.
It was discussed and agreed an incompatible change is ok
since the API is still experimental and the modified
methods were only added within the last week so usage
will be minimal to none.

PR-URL: #31930
Reviewed-By: Stephen Belanger <admin@stephenbelanger.com>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Michael Dawson <michael_dawson@ca.ibm.com>
@targos targos mentioned this pull request May 2, 2020
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@Flarna Flarna Flarna approved these changes

@vdeturckheim vdeturckheim vdeturckheim approved these changes

@Qard Qard Qard approved these changes

@mhdawson mhdawson mhdawson approved these changes

@targos targos targos approved these changes

@mcollina mcollina mcollina approved these changes

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