fix(sdk): use lockfiles to prevent multiple simulators on the same state directory

[skyrpex]

Uses a lockfile to prevent multiple simulators on the same state directory, which would cause issues. The lockfile is periodically updated in order to check for staleness.

Additionally, adds a --statedir "mystatedir" flag to wing it that allows users changing the simulator state directory.

Fixes #5799.

[github-actions]

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Topic	Owner
Wing SDK and utility APIs	@chriscbr
Wing Console	@ainvoner, @skyrpex, @polamoros
JSON, structs, primitives and collections	@hasanaburayyan
Platforms and plugins	@hasanaburayyan
Frontend resources (website, react, etc)	@tsuf239
Language design	@chriscbr
VSCode extension and language server	@markmcculloh
Compiler architecture, inflights, lifting	@yoav-steinberg
Wing Testing Framework	@tsuf239
Wing CLI	@markmcculloh
Build system, dev environment, releases	@markmcculloh
Library Ecosystem	@chriscbr
Documentation	@hasanaburayyan
SDK test suite	@tsuf239
Examples	@hasanaburayyan
Wing Playground	@eladcon

[monadabot]

Console preview environment is available at https://wing-console-pr-6911.fly.dev 🚀

Last Updated (UTC) 2024-07-22 11:15

[skyrpex]

Note to self:

If the lockfile was compromised, we should close the file handle but not remove the lockfile, since it may be owned by another process.

On the other hand, if we use a directory instead of a file, we shouldn't need to close anything.

[monadabot]

Benchmarks

Comparison to Baseline ⬜⬜⬜⬜⬜⬜⬜⬜⬜🟥⬜⬜⬜

Benchmark	Before	After	Change
version	58ms±0.78	57ms±0.61	-1ms (-1.92%)⬜
functions_10.test.w -t sim	520ms±6.73	517ms±23.06	-4ms (-0.73%)⬜
functions_10.test.w -t tf-aws	2221ms±23.89	2224ms±23.79	+3ms (+0.14%)⬜
jsii_small.test.w -t sim	380ms±4.11	384ms±3.64	+5ms (+1.23%)⬜
jsii_small.test.w -t tf-aws	623ms±4.9	629ms±3.82	+6ms (+0.92%)⬜
jsii_big.test.w -t sim	2954ms±12.91	2994ms±15.16	+40ms (+1.34%)⬜
jsii_big.test.w -t tf-aws	3167ms±16.39	3204ms±20.26	+37ms (+1.17%)⬜
hello_world.test.w -t sim	408ms±4	413ms±6.91	+5ms (+1.27%)⬜
hello_world.test.w -t tf-aws	1491ms±13.56	1506ms±7.77	+15ms (+1%)⬜
empty.test.w -t sim	364ms±1.64	377ms±5.19	+13ms (+3.7%)🟥
empty.test.w -t tf-aws	611ms±4	620ms±6.02	+10ms (+1.57%)⬜
functions_1.test.w -t sim	401ms±4.35	409ms±3.59	+8ms (+1.92%)⬜
functions_1.test.w -t tf-aws	853ms±4.66	864ms±5.01	+11ms (+1.25%)⬜

⬜ Within 1.5 standard deviations
🟩 Faster, Above 1.5 standard deviations
🟥 Slower, Above 1.5 standard deviations

Benchmarks may vary outside of normal expectations, especially when running in GitHub Actions CI.

Results

name	mean	min	max	moe	sd
version	57ms	56ms	59ms	1ms	1ms
functions_10.test.w -t sim	517ms	467ms	577ms	23ms	32ms
functions_10.test.w -t tf-aws	2224ms	2178ms	2289ms	24ms	33ms
jsii_small.test.w -t sim	384ms	376ms	394ms	4ms	5ms
jsii_small.test.w -t tf-aws	629ms	621ms	636ms	4ms	5ms
jsii_big.test.w -t sim	2994ms	2956ms	3030ms	15ms	21ms
jsii_big.test.w -t tf-aws	3204ms	3150ms	3243ms	20ms	28ms
hello_world.test.w -t sim	413ms	401ms	435ms	7ms	10ms
hello_world.test.w -t tf-aws	1506ms	1491ms	1526ms	8ms	11ms
empty.test.w -t sim	377ms	364ms	386ms	5ms	7ms
empty.test.w -t tf-aws	620ms	603ms	631ms	6ms	8ms
functions_1.test.w -t sim	409ms	402ms	419ms	4ms	5ms
functions_1.test.w -t tf-aws	864ms	849ms	874ms	5ms	7ms

Last Updated (UTC) 2024-07-22 11:20

[mergify]

Thanks for contributing, @skyrpex! This PR will now be added to the merge queue, or immediately merged if simulator-use-lockfile-to-prevent-multiple-instances-on-the-same-state-dir is up-to-date with main and the queue is empty.

[monadabot]

Congrats! 🚀 This was released in Wing 0.79.5.