http2: cleanup and refactoring of http2 internals #32884

jasnell · 2020-04-16T18:00:34Z

This is a fairly extensive overhaul of much of the http2 c++ internals across multiple commits. This is in preparation for some additional work in plan.

cleanup constants in http2 binding - Rework constants usage for consistency
refactor GetPackedSettings to avoid unnecessary AsyncWrap - Address TODO statement and make packed settings more efficient
simplify settings to reduce duplicate code - Refactor how settings are handled to eliminate duplicated code
improve style consistency and correctness - multiple changes (see commit message for detail)
make EmitStatistics function private - Only used internally for each class
un-nest Http2Settings and Http2Ping - These were unnecessarily nested within Http2Session
refactoring and cleanup of Http2Settings and Http2Ping - Improve object creation and use
avoid ** syntax for readability - Avoid syntax like **session and **stream
avoid most uses of ToChecked/ToLocalChecked - Move to using MaybeLocal where possible
use const references for Http2Priority - Simplify priority implementation and use
remove unnecessary GetStream function - Self explanatory
refactor Http2Scope to use BaseObjectPtr - Simplify implementation
move utility function to anonymous namespace - Self explanatory
refactor and simplify Origins - Use AllocatedBuffer rather than MaybeStackBuffer, simplify use
use BaseObjectPtr for Http2Streams map - Self explanatory
move MemoryInfo impl to cc -- Style and code organization improvements
fixup lint and style issues -- Fixup linting issues from prior commits

Checklist

make -j4 test (UNIX), or vcbuild test (Windows) passes
commit message follows commit guidelines

The error constants were just doing some weird things. Cleanup and improve maintainability. Signed-off-by: James M Snell <[email protected]>

Signed-off-by: James M Snell <[email protected]>

Use snake_case for getters and setters at c++ level, avoid unnecessary use of enums, use consistent style for exported vs. internal constants, avoid unnecessary memory info reporting, use setters/getters for flags_ for improved code readability Signed-off-by: James M Snell <[email protected]>

Signed-off-by: James M Snell <[email protected]>

The **session and **stream syntax for getting the underlying nghttp2 pointers is not ideal for readability Signed-off-by: James M Snell <[email protected]>

Signed-off-by: James M Snell <[email protected]>

* Use an AllocatedBuffer instead of MaybeStackBuffer * Use a const reference instead of pointer Signed-off-by: James M Snell <[email protected]>

Signed-off-by: James M Snell <[email protected]>

nodejs-github-bot · 2020-04-16T18:01:55Z

CI: https://ci.nodejs.org/job/node-test-pull-request/30790/

src/node_http2.cc

src/node_http2.h

src/node_http2.cc

addaleax · 2020-04-17T11:27:13Z

@jasnell What if you temporarily remove the callback changes here that make them v8::Globals? The approach is generally a memory leak footgun, because if there is any way through which the callback refers back to the containing object, you’ll end up with a leak

jasnell · 2020-04-17T13:03:45Z

I could but I don't believe that's the issue. The memory accounting is being thrown off while attempting to write the data. Didn't get too far investigating it yesterday so continuing today

nodejs-github-bot · 2020-04-17T18:04:54Z

CI: https://ci.nodejs.org/job/node-test-pull-request/30816/

jasnell · 2020-04-17T18:38:42Z

Ok, looks like CI is good to go now. :-)

mcollina

lgtm

* cleanup constants in http2 binding The error constants were just doing some weird things. Cleanup and improve maintainability. * simplify settings to reduce duplicate code * improve style consistency and correctness Use snake_case for getters and setters at c++ level, avoid unnecessary use of enums, use consistent style for exported vs. internal constants, avoid unnecessary memory info reporting, use setters/getters for flags_ for improved code readability * make EmitStatistics function private * un-nest Http2Settings and Http2Ping * refactoring and cleanup of Http2Settings and Http2Ping * avoid ** syntax for readability The **session and **stream syntax for getting the underlying nghttp2 pointers is not ideal for readability * use const references for Http2Priority * remove unnecessary GetStream function * refactor Http2Scope to use BaseObjectPtr * move utility function to anonymous namespace * refactor and simplify Origins * Use an AllocatedBuffer instead of MaybeStackBuffer * Use a const reference instead of pointer * use BaseObjectPtr for Http2Streams map * move MemoryInfo impl to cc Signed-off-by: James M Snell <[email protected]> PR-URL: #32884 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Franziska Hinkelmann <[email protected]>

jasnell · 2020-04-21T20:41:56Z

Landed in 91ca221

* cleanup constants in http2 binding The error constants were just doing some weird things. Cleanup and improve maintainability. * simplify settings to reduce duplicate code * improve style consistency and correctness Use snake_case for getters and setters at c++ level, avoid unnecessary use of enums, use consistent style for exported vs. internal constants, avoid unnecessary memory info reporting, use setters/getters for flags_ for improved code readability * make EmitStatistics function private * un-nest Http2Settings and Http2Ping * refactoring and cleanup of Http2Settings and Http2Ping * avoid ** syntax for readability The **session and **stream syntax for getting the underlying nghttp2 pointers is not ideal for readability * use const references for Http2Priority * remove unnecessary GetStream function * refactor Http2Scope to use BaseObjectPtr * move utility function to anonymous namespace * refactor and simplify Origins * Use an AllocatedBuffer instead of MaybeStackBuffer * Use a const reference instead of pointer * use BaseObjectPtr for Http2Streams map * move MemoryInfo impl to cc Signed-off-by: James M Snell <[email protected]> PR-URL: #32884 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Franziska Hinkelmann <[email protected]>

jasnell added 17 commits April 16, 2020 10:51

http2: cleanup constants in http2 binding

f38c9ea

The error constants were just doing some weird things. Cleanup and improve maintainability. Signed-off-by: James M Snell <[email protected]>

http2: refactor GetPackedSettings to avoid unnecessary AsyncWrap

219e339

Signed-off-by: James M Snell <[email protected]>

http2: simplify settings to reduce duplicate code

5499c7c

Signed-off-by: James M Snell <[email protected]>

http2: make EmitStatistics function private

a2efaa7

Signed-off-by: James M Snell <[email protected]>

http2: un-nest Http2Settings and Http2Ping

b23cecc

Signed-off-by: James M Snell <[email protected]>

http2: refactoring and cleanup of Http2Settings and Http2Ping

681bfe4

Signed-off-by: James M Snell <[email protected]>

http2: avoid ** syntax for readability

0e0a3a2

The **session and **stream syntax for getting the underlying nghttp2 pointers is not ideal for readability Signed-off-by: James M Snell <[email protected]>

http2: avoid most uses to ToChecked/ToLocalChecked

e39420f

Signed-off-by: James M Snell <[email protected]>

http2: use const references for Http2Priority

e8a2f5e

Signed-off-by: James M Snell <[email protected]>

http2: remove unnecessary GetStream function

52fcf89

Signed-off-by: James M Snell <[email protected]>

http2: refactor Http2Scope to use BaseObjectPtr

7aefc8f

Signed-off-by: James M Snell <[email protected]>

http2: move utility function to anonymous namespace

d9c5a40

Signed-off-by: James M Snell <[email protected]>

http2: refactor and simplify Origins

6b86554

* Use an AllocatedBuffer instead of MaybeStackBuffer * Use a const reference instead of pointer Signed-off-by: James M Snell <[email protected]>

http2: use BaseObjectPtr for Http2Streams map

4ccd690

Signed-off-by: James M Snell <[email protected]>

http2: move MemoryInfo impl to cc

fe77e23

Signed-off-by: James M Snell <[email protected]>

http2: fixup lint and style issues

764c71d

Signed-off-by: James M Snell <[email protected]>

nodejs-github-bot added c++ Issues and PRs that require attention from people who are familiar with C++. lib / src Issues and PRs related to general changes in the lib or src directory. labels Apr 16, 2020

jasnell requested review from addaleax and mcollina April 16, 2020 18:00

addaleax reviewed Apr 16, 2020

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jasnell force-pushed the refactor-http2-internals branch from 9603c7a to 639f426 Compare April 16, 2020 23:11

jasnell force-pushed the refactor-http2-internals branch 2 times, most recently from 28c9cc2 to 04415cf Compare April 17, 2020 16:11

[Squash] fixup

1342b24

jasnell force-pushed the refactor-http2-internals branch from 8045d42 to 1342b24 Compare April 17, 2020 18:04

jasnell requested a review from addaleax April 17, 2020 18:38

mcollina approved these changes Apr 17, 2020

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fhinkel approved these changes Apr 21, 2020

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jasnell added the author ready PRs that have at least one approval, no pending requests for changes, and a CI started. label Apr 21, 2020

jasnell closed this Apr 21, 2020

BethGriggs mentioned this pull request Apr 27, 2020

v14.1.0 proposal #33103

Merged

BridgeAR added the dont-land-on-v13.x label Apr 28, 2020

targos added the backport-blocked-v12.x label May 7, 2020

joyeecheung mentioned this pull request Jun 8, 2020

src: retrieve binding data from the context #33139

Closed

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addaleax added dont-land-on-v12.x and removed backport-blocked-v12.x labels Sep 23, 2020

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http2: cleanup and refactoring of http2 internals #32884

http2: cleanup and refactoring of http2 internals #32884

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http2: cleanup and refactoring of http2 internals #32884

http2: cleanup and refactoring of http2 internals #32884

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jasnell commented Apr 16, 2020

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