Scans all yaml files with cfn-lint at startup.

[b3cft]

Issue Type: Bug

I have a couple of hundred cloudformation templates and serverless templates in my default workspace.

Every time I start or reload vscode it scans all the yaml files with cfn-lint.

It pushes to load average up to approx 200, until the WSL stops responding and disconnects.
Then reconnecting it does it again. Rinse, repeat.

I've had to start running

pkill -f cfn-lint

multiple times in a terminal session when vscode or my machine reloads to keep it under control.

Is there a way to add a setting, to only lint files on open, rather than scan the whole workspace on load?

Extension version: 0.20.0
VS Code version: Code - Insiders 1.61.0-insider (aec6ee09fa1021cb59c7f4f4d000b027febc967d, 2021-09-03T05:14:10.486Z)
OS version: Windows_NT x64 10.0.22000
Restricted Mode: No
Remote OS version: Linux x64 5.10.43.3-microsoft-standard-WSL2

System Info

Item	Value
CPUs	AMD Ryzen 9 3900X 12-Core Processor (24 x 3793)
GPU Status	2d_canvas: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on oop_rasterization: enabled opengl: enabled_on rasterization: enabled skia_renderer: enabled_on video_decode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled
Load (avg)	undefined
Memory (System)	63.94GB (40.65GB free)
Process Argv	--crash-reporter-id d84130c3-89a0-47ae-a4ce-aa1e8a9d5382
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu-20.04
OS	Linux x64 5.10.43.3-microsoft-standard-WSL2
CPUs	AMD Ryzen 9 3900X 12-Core Processor (24 x 3792)
Memory (System)	31.33GB (28.20GB free)
VM	0%

A/B Experiments

vsliv695:30137379
vsins829:30139715
vsliv368cf:30146710
vsreu685:30147344
python383cf:30185419
vspor879:30202332
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vspor363:30204092
pythonvspyt639:30291487
pythontb:30258533
vshan820:30294714
pythonvsuse255:30319630
3f5j7703:30294757
vscod805cf:30301675
vsccppwtct:30312693
bridge0708:30335490
pygetstartedt2:30353727
dockerwalkthru:30348713
bridge0723:30353136
javagetstartedt:30350119
pydsgst2:30361790

[kddejong]

The default configuration, if the VS Code docs are correct, is that it will only scan on files being open.

Do you have a .cfnlintrc file?

[b3cft]

No, I don't have .cfnlintrc file in the workspace or my home dir.

[wayne-folkes]

I am running into this issue as well and dont have a cfnlintrc either. Is there some way to only limit the behavior of this plugin to only evaluate the open file?

[gmergulhao]

also running into this issue, which causes 100% ram utilization since cfn-lint runs for 100+ templates.
same behaviour with pip installed cfn-lint versions 0.50, 0.60, 0.63, 0.65
running python 3.10 x64

[kddejong]

I may have to add some debugging output to get more details but can you provide me the abbreviated Output from the plugin? We should see the execution for every file that was opened or saved. We should only see executions for the files that are open.