deploy

#!/bin/bash -e

DEFAULT_STACK_NAME="AWSPics"
stack_name="${DEFAULT_STACK_NAME}"

USAGE=$(cat <<-END
Usage:
  deploy my.bucket.name
The bucket will be used to store the Lambda code when deploying.
It will be created if needed.
Optional usage:
  deploy --stack-name=mystackname my.bucket.name
Specify stack name, otherwise it defaults to ${DEFAULT_STACK_NAME}
END
)

while [ $# -gt 1 ]; do
  case "$1" in
    --stack-name=*)
      stack_name="${1#*=}"
      ;;
    *)
      echo "${USAGE}"
      exit 1
  esac
  shift
done

if [ -z "$1" ]; then
  echo "${USAGE}"
  exit 1
else
  s3_bucket=$1
fi

output_template_file=$(mktemp)

for function in login resize site-builder; do
  (
    cd $function
    docker build -t "cloudformation-lambda-$function" .
    docker run "cloudformation-lambda-$function" > ../dist/lambda-$function.zip
  )
done

# create the target S3 bucket if needed
if ! aws s3 ls "s3://${s3_bucket}" > /dev/null
then
  aws s3 mb "s3://${s3_bucket}"
fi

# create and upload the CloudFormation package
aws cloudformation package \
    --template-file app.yml \
    --output-template-file "${output_template_file}" \
    --s3-bucket "${s3_bucket}"

# deploy it
aws cloudformation deploy \
    --template-file "${output_template_file}" \
    --stack-name ${stack_name} \
    --capabilities CAPABILITY_IAM \
    --parameter-overrides file://dist/config.json || true

# Invoke SiteBuilder function
func_name="$(aws cloudformation describe-stack-resource --stack-name ${stack_name} --logical-resource-id SiteBuilderFunction | sed -n 's/.*"PhysicalResourceId": "\(.*\)",/\1/p')"
aws lambda invoke --function-name ${func_name} --invocation-type Event "$(mktemp)"