lightsailctl

Amazon Lightsail CLI Extensions

This project is the source code of lightsailctl, a tool that augments Amazon Lightsail features in AWS CLI.

Usage

lightsailctl is executed automatically by AWS CLI when certain subcommands are used, such as aws lightsail push-container-image.

$ lightsailctl --plugin -h

Usage of `lightsailctl --plugin`:
  --input payload
        plugin payload
  --input-stdin
        receive plugin payload on stdin

Installing

Homebrew 🍻

$ brew install aws/tap/lightsailctl

From Source

lightsailctl is written in Go, so please install Go.

After you clone this repo and open your terminal app in it, you'll be able to test and build this code like so:

go test ./...
go install ./...

If go install ./... is successful, the resulting executable will be located at $GOPATH/bin/lightsailctl. Note that if GOPATH isn't set explicitly, OS-specific GOPATH will be in effect, for example: $HOME/go on Unix, and %USERPROFILE%\go on Windows.

Copy the freshly-built lightsailctl binary to some location in your system's PATH or add $GOPATH/bin to your system's PATH.

Under The Hood

Let's consider this command and see what actually happens:

aws lightsail push-container-image \
 --service-name hello \
 --image hello-world:latest \
 --label www

The above command pushes a local container image with tag hello-world:latest to make it available in Lightsail container service deployments for service hello.

This container image pushing logic requires a number of steps that are outsourced from AWS CLI to lightsailctl.

Here's a shell invocation of ligtsailctl that approximates what AWS CLI does when the command above is invoked:

$ echo '{
  "inputVersion": "1",
  "operation": "PushContainerImage",
  "payload": {
    "service": "hello",
    "label":   "www",
    "image":   "hello-world:latest"
  }
}' | lightsailctl --plugin --input-stdin

85fcec7ef3ef: Layer already exists 
3e5288f7a70f: Layer already exists 
56bc37de0858: Layer already exists 
1c91bf69a08b: Layer already exists 
cb42413394c4: Layer already exists 
Digest: sha256:0b159cd1ee1203dad901967ac55eee18c24da84ba3be384690304be93538bea8
Image "hello-world:latest" registered.
Refer to this image as ":hello.www.73" in deployments.

Security Disclosures

See CONTRIBUTING.md for more information.

Giving Feedback and Contributing

Aside from the security feedback covered above, do you have any feedback, bug reports, questions or feature ideas?

You are welcome to write up an issue for us.

Please read about Contributing Guidelines.

License

This project is licensed under the Apache-2.0 License.