ota-requestor-app - initial set of changes of development branch

[holbrookt]

Problem

Submitting a work-in-progress ota-requestor-app so that others may begin to pick up development.

NOTE - this will not build successfully right now. See examples/ota-requestor-app/linux/README.md for the current state of this application.

Change overview

Add new example app ota-requestor-app.

Testing

N/A

[github-actions]

Size increase report for "esp32-example-build" from b2f134b

File	Section	File	VM
chip-lock-app.elf	.flash.text	64	64
chip-ipv6only-app.elf	.flash.text	172	172
chip-temperature-measurement-app.elf	.flash.text	-36	-36
chip-shell.elf	.flash.text	-48	-48

Full report output

BLOAT REPORT

Files found only in the build output:
    report.csv

Comparing ./master_artifact/chip-all-clusters-app.elf and ./pull_artifact/chip-all-clusters-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-lock-app.elf and ./pull_artifact/chip-lock-app.elf:

sections,vmsize,filesize
.flash.text,64,64
.debug_loc,0,-4
.xt.lit._ZNK4chip4SpanIhE7SubSpanEjj,0,-8
.xt.prop._ZNK4chip4SpanIhE7SubSpanEjj,0,-12
[Unmapped],0,-64

Comparing ./master_artifact/chip-pigweed-app.elf and ./pull_artifact/chip-pigweed-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-bridge-app.elf and ./pull_artifact/chip-bridge-app.elf:

sections,vmsize,filesize

Comparing ./master_artifact/chip-ipv6only-app.elf and ./pull_artifact/chip-ipv6only-app.elf:

sections,vmsize,filesize
[Unmapped],0,3924
.flash.text,172,172

Comparing ./master_artifact/chip-temperature-measurement-app.elf and ./pull_artifact/chip-temperature-measurement-app.elf:

sections,vmsize,filesize
[Unmapped],0,36
.flash.text,-36,-36

Comparing ./master_artifact/chip-shell.elf and ./pull_artifact/chip-shell.elf:

sections,vmsize,filesize
[Unmapped],0,48
.flash.text,-48,-48

Comparing ./master_artifact/chip-persistent-storage.elf and ./pull_artifact/chip-persistent-storage.elf:

sections,vmsize,filesize

[andy31415]

Approving based on SWTT developers working on OTA requests.

however comment says 'this app does not yet build' which is concerning - ideally we should check in code that at least compiles.

[andy31415]

NOTE: Approved since OTA development team (@carol-apple , @selissia , @kkasperczyk-no ?) seemed to want this in.

The part in the readme that says 'code does not yet compile' is worrysome and wondering if it would maybe be better to not check in code that does not compile and instead have work proceed on a separate branch. My checkmark is more of a 'I trust OTA team to do the right thing'.

[holbrookt]

NOTE: Approved since OTA development team (@carol-apple , @selissia , @kkasperczyk-no ?) seemed to want this in.

The part in the readme that says 'code does not yet compile' is worrysome and wondering if it would maybe be better to not check in code that does not compile and instead have work proceed on a separate branch. My checkmark is more of a 'I trust OTA team to do the right thing'.

I was asked by @woody-apple to submit whatever I currently had for the ota-requestor-app so that Carol and Sergei could get started helping out.

In any case, I am preparing a follow-up PR that will get this to build and run some minimal functionality ASAP.