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dns: refactor default resolver by joyeecheung · Pull Request #44541 · nodejs/node · GitHub

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dns: refactor default resolver - #44541

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joyeecheung:refactor-resolver
Sep 13, 2022
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dns: refactor default resolver#44541
nodejs-github-bot merged 2 commits into
nodejs:mainfrom
joyeecheung:refactor-resolver

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joyeecheung commented Sep 6, 2022

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This patch refactors the DNS default resolver code to make it
easier to be included in a snapshot:

  • The code specific for the callback-based DNS resolver are not
    in a separate module to make the dependency clearer (it's not
    actually needed if the user only ever loads dns/promises)
  • The common part of the callback-based resolver and the promise-
    based resolver is now ResolverBase. The other two user-facing
    resolvers are now subclasses of ResolverBase. The default
    Resolver is constructed with just ResolverBase. This would
    be fine as the default resolver is never actually exposed
    to the user-land and it has been working using duck-typing anyway.
  • Move the construction of Resolver subclasses into a common
    method createResolverClass() to reduce code duplication.
    The two subclasses now also share the same base constructor.
    This would make it possible for them to also share code
    for snapshot support later.
  • --dns-result-order is now queried and refreshed during
    pre-execution. To avoid loading the cares_wrap binding unnecessarily
    the loading of the binding is also made lazy.

dns: refactor default resolver
3fb09a5 
This patch refactors the DNS default resolver code to make it
easier to be included in a snapshot:

- The code specific for the callback-based DNS resolver are not
  in a separate module to make the dependency clearer (it's not
  actually needed if the user only ever loads `dns/promises`)
- The common part of the callback-based resolver and the promise-
  based resolver is now ResolverBase. The other two user-facing
  resolvers are now subclasses of ResolverBase. The default
  Resolver is constructed with just ResolverBase. This would
  be fine as the default resolver is never actually exposed
  to the user-land and it has been working using duck-typing anyway.
- Move the construction of Resolver subclasses into a common
  method `createResolverClass()` to reduce code duplication.
  The two subclasses now also share the same base constructor.
  This would make it possible for them to also share code
  for snapshot support later.
- `--dns-result-order` is now queried and refreshed during
  pre-execution. To avoid loading the cares_wrap binding unnecessarily
  the loading of the binding is also made lazy.

nodejs-github-bot commented Sep 6, 2022

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Review requested:

  • @nodejs/net

nodejs-github-bot added lib / src Issues and PRs related to general changes in the lib or src directory. needs-ci PRs that need a full CI run. labels Sep 6, 2022
mcollina approved these changes Sep 6, 2022
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

lgtm

joyeecheung added the review wanted PRs that need reviews. label Sep 7, 2022

nodejs-github-bot commented Sep 12, 2022

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CI: https://ci.nodejs.org/job/node-test-pull-request/46529/

nodejs-github-bot commented Sep 12, 2022

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CI: https://ci.nodejs.org/job/node-test-pull-request/46538/

joyeecheung commented Sep 12, 2022

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Added initialization in the worker bootstrap to fix the --worker failures.

nodejs-github-bot commented Sep 12, 2022

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CI: https://ci.nodejs.org/job/node-test-pull-request/46540/

mcollina approved these changes Sep 12, 2022
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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

still LGTM

github-actions Bot mentioned this pull request Sep 13, 2022
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nodejs-github-bot commented Sep 13, 2022

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CI: https://ci.nodejs.org/job/node-test-pull-request/46559/

nodejs-github-bot commented Sep 13, 2022

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CI: https://ci.nodejs.org/job/node-test-pull-request/46562/

mcollina added author ready PRs that have at least one approval, no outstanding review comments, and a CI started. commit-queue Add this label to land a pull request using GitHub Actions. commit-queue-squash Add this label to instruct the Commit Queue to squash all the PR commits into the first one. and removed needs-ci PRs that need a full CI run. labels Sep 13, 2022
nodejs-github-bot removed the commit-queue Add this label to land a pull request using GitHub Actions. label Sep 13, 2022
nodejs-github-bot merged commit 12fb94c into nodejs:main Sep 13, 2022

nodejs-github-bot commented Sep 13, 2022

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Landed in 12fb94c

This was referenced Sep 14, 2022
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github-actions Bot mentioned this pull request Sep 19, 2022
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RafaelGSS pushed a commit that referenced this pull request Sep 26, 2022
dns: refactor default resolver
0f232e9 
This patch refactors the DNS default resolver code to make it
easier to be included in a snapshot:

- The code specific for the callback-based DNS resolver are not
  in a separate module to make the dependency clearer (it's not
  actually needed if the user only ever loads `dns/promises`)
- The common part of the callback-based resolver and the promise-
  based resolver is now ResolverBase. The other two user-facing
  resolvers are now subclasses of ResolverBase. The default
  Resolver is constructed with just ResolverBase. This would
  be fine as the default resolver is never actually exposed
  to the user-land and it has been working using duck-typing anyway.
- Move the construction of Resolver subclasses into a common
  method `createResolverClass()` to reduce code duplication.
  The two subclasses now also share the same base constructor.
  This would make it possible for them to also share code
  for snapshot support later.
- `--dns-result-order` is now queried and refreshed during
  pre-execution. To avoid loading the cares_wrap binding unnecessarily
  the loading of the binding is also made lazy.

PR-URL: #44541
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>
RafaelGSS mentioned this pull request Sep 26, 2022
Merged
RafaelGSS pushed a commit that referenced this pull request Sep 26, 2022
dns: refactor default resolver
729dd95 
This patch refactors the DNS default resolver code to make it
easier to be included in a snapshot:

- The code specific for the callback-based DNS resolver are not
  in a separate module to make the dependency clearer (it's not
  actually needed if the user only ever loads `dns/promises`)
- The common part of the callback-based resolver and the promise-
  based resolver is now ResolverBase. The other two user-facing
  resolvers are now subclasses of ResolverBase. The default
  Resolver is constructed with just ResolverBase. This would
  be fine as the default resolver is never actually exposed
  to the user-land and it has been working using duck-typing anyway.
- Move the construction of Resolver subclasses into a common
  method `createResolverClass()` to reduce code duplication.
  The two subclasses now also share the same base constructor.
  This would make it possible for them to also share code
  for snapshot support later.
- `--dns-result-order` is now queried and refreshed during
  pre-execution. To avoid loading the cares_wrap binding unnecessarily
  the loading of the binding is also made lazy.

PR-URL: #44541
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Zeyu "Alex" Yang <himself65@outlook.com>
Reviewed-By: Minwoo Jung <nodecorelab@gmail.com>

juanarbol commented Oct 3, 2022

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After multiple tries to land this in the v16.x release branch, this is breaking almost all the tests related to DNS resolution, getting native errors like EINVAL errors and 127.0.0.1 |::1 errors. I will label this as "backport-requested" in the meantime.

juanarbol mentioned this pull request Oct 4, 2022
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mcollina mcollina approved these changes
JungMinu JungMinu approved these changes
himself65 himself65 approved these changes

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