Ruby bundle version doesn't match Ruby AWS Lambda function version-CodePudding

I created a Lambda function on AWS and selected the runtime: Ruby version 2.7.0. Then I deployed my Ruby function with .zip file archives to this AWS Lambda function using following commands:

bundle config set --local path 'vendor/bundle'
bundle install
zip -r my_function.zip lambda_function.rb vendor
aws lambda update-function-code --function-name test-function --zip-file fileb://my_function.zip

Deploying was successful, however all the libraries are added to vendor/bundle/ruby/2.4.0/..., but not vendor/bundle/ruby/2.7.0/...

  adding: vendor/bundle/ruby/2.4.0/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/build_info/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/doc/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/gems/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/CHANGELOG.md (deflated 50%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/LICENSE.txt (deflated 65%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/lib/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/lib/aws-eventstream.rb (deflated 63%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/lib/aws-eventstream/ (stored 0%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/lib/aws-eventstream/types.rb (deflated 62%)
  adding: vendor/bundle/ruby/2.4.0/gems/aws-eventstream-1.2.0/lib/aws-eventstream/header_value.rb (deflated 57%)
  ...

I could not find what causes the problem. How can I deploy the lambda with adding the libraries to vendor/bundle/ruby/2.7.0/...?

The GEMFILE.lock file is:

GEM
  remote: https://rubygems.org/
  specs:
    aws-eventstream (1.2.0)
    aws-partitions (1.547.0)
    aws-sdk-core (3.125.1)
      aws-eventstream (~> 1, >= 1.0.2)
      aws-partitions (~> 1, >= 1.525.0)
      aws-sigv4 (~> 1.1)
      jmespath (~> 1.0)
    aws-sdk-sqs (1.49.0)
      aws-sdk-core (~> 3, >= 3.125.0)
      aws-sigv4 (~> 1.1)
    aws-sigv4 (1.4.0)
      aws-eventstream (~> 1, >= 1.0.2)
    bindata (2.4.10)
    colorize (0.8.1)
    jmespath (1.4.0)
    json (2.6.1)
    redis (4.5.1)

PLATFORMS
  x86_64-darwin-20

DEPENDENCIES
  aws-sdk-sqs
  bindata
  colorize
  json
  redis

BUNDLED WITH
   2.3.4

CodePudding user response：

You're using Ruby 2.4.0 locally to bundle your Ruby application which makes Bundler (correctly) believe that you're targeting 2.4.0, which then results in the vendor/bundle/ruby/2.4.0/ folder being populated.

You should instead install and use Ruby 2.7.0 to sync your local Ruby version to the Lambda runtime you are targeting.

After verifying with ruby -v that you are indeed on 2.7.0, reinstall Bundler (gem install bundler) and then rerun the above commands.

You should then have the vendor/bundle/ruby/2.7.0/ folder populated instead after running bundle install, with the output of zip -r also showing that.