Invalid entrypoint on AWS Lambda

[marcustut]

Couldn't find valid bootstrap(s): [/var/task/bootstrap /opt/bootstrap] Runtime.InvalidEntrypoint

I'm having this issue after uploading the .zip file that was successfully built by CodeBuild. FYI, I'm using a subdirectory to house my code. So, in CodeBuild I configured the path to be trading-api/buildspec.yml. And in the yml file I have to make few changes so that the build pass.

Following lines with <-- shows the changed lines

version: 0.2

env:
  variables:
     PATH: "/root/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/codebuild/user/bin"
phases:
  install:
    commands:
      # Install rust toolchanin
      - curl -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal
  build:
    commands:
      # move into code directory
      - cd trading-api # <---
      # build Rust binary
      - cargo build --release
      # binary name must be "bootstrap" for Lambda custom runtime
      - mv target/release/trading-api bootstrap
      # strip & check size, dependencies
      - strip --strip-all bootstrap
      - size bootstrap
      - ldd bootstrap
artifacts:
  files:
    - trading-api/bootstrap # <---
    # - add other resources such as CSS, Javascript assets, etc.
  #discard-paths: yes

[sedrik]

It looks like you are moving the built binary to the current working directory with the initial move but the artifact is expected to reside inside of the trading-api folder so that is probably why it is not found.

Try changing - mv target/release/trading-api bootstrap to - mv target/release/trading-api trading-api/bootstrap

Hope it helps.

[marcustut]

I can't do that actually, it fails on CodeBuild because trading-api is not a folder there

[marcustut]

I'm using Function URLs here, could that be a culprit? I tried running the same build output from CodeBuild on EC2 and I have to use Nginx in order for it to be accessible from he public.

[sedrik]

Ok, what if you try.

...
- mv target/release/trading-api bootstrap
...
artifacts:
  files:
    - bootstrap

I dont use CodeBuild myself but it feels like that should work. I would guess that CodeBuild make anything you specify in the artifacts available somewhere for you to access