Given a source directory that contains a go package, create a go module that is hostable on a regular HTTP server (in this case an S3 bucket)

create_go_package.sh

#!/usr/bin/env bash
# Given a directory containing a Go module, converts it to a
# package in the format required to be hosted on standard HTTP server
#!/bin/bash
if [ $# -ne 6 ]
  then
    echo "Usage: $0 <source_directory> <output_directory> <slug> <package> <version> <S3_bucket_name"
    echo "Eg:    $0 my_code_pkg/ output_dir example.com mymodule \"1.0.0\" my-bucket"
    exit 1
fi


INPUT_DIR=$1
OUTPUT_DIR=$2
SLUG=$3
PACKAGE=$4
VERSION=$5
BUCKET_NAME=$6

DEST=$OUTPUT_DIR/$SLUG/$PACKAGE/@v
PACKAGE_LOCATION=$DEST/$SLUG/$PACKAGE@v$VERSION
mkdir -p $PACKAGE_LOCATION

cp -R $INPUT_DIR/* $PACKAGE_LOCATION

cd $PACKAGE_LOCATION
go mod init $SLUG/$PACKAGE
cd -
mv $PACKAGE_LOCATION/go.mod $DEST/v$VERSION.mod

JSON_STRING=$( jq -n \
                  --arg jsonversion "v$VERSION" \
                  --arg jsontimenow `date --rfc-3339=seconds | sed 's/ /T/'` \
                  '{Version: $jsonversion, Time: $jsontimenow}' )
echo Creating file $DEST/v$VERSION.info with JSON contents: $JSON_STRING
echo $JSON_STRING > $DEST/v$VERSION.info
cd $DEST
echo $PWD
zip -r $PACKAGE@v$VERSION.zip $SLUG/*

#UPLOAD to S3 bucket
aws s3 cp --acl=public-read $PACKAGE@v$VERSION.zip s3://$BUCKET_NAME/$SLUG/$PACKAGE/@v/
aws s3 cp --acl=public-read v$VERSION.info s3://$BUCKET_NAME/$SLUG/$PACKAGE/@v/
aws s3 cp --acl=public-read v$VERSION.mod s3://$BUCKET_NAME/$SLUG/$PACKAGE/@v/

echo "Package uploaded!!! Remember to set you GOPROXY, eg."
echo "export GOPROXY=http://$BUCKET_NAME.s3-website-eu-west-1.amazonaws.com"
echo "and then test the package download with"
echo "go get -v $SLUG/$PACKAGE@v$VERSION"