generator.sh

#!/bin/bash -e

export SOURCE_VARIANTS=(ubuntu )

export DEFAULT_SCALA="2.12"
export DEFAULT_JAVA="11"

function generateDockerfile {
    # define variables
    dir=$1
    binary_download_url=$2
    asc_download_url=$3
    gpg_key=$4
    check_gpg=$5
    java_version=$6
    source_variant=$7

    from_docker_image="eclipse-temurin:${java_version}-jre-jammy"

    cp docker-entrypoint.sh "$dir/docker-entrypoint.sh"

    # '&' has special semantics in sed replacement patterns
    escaped_binary_download_url=$(echo "$binary_download_url" | sed 's/&/\\\&/')

    # generate Dockerfile
    sed \
        -e "s,%%BINARY_DOWNLOAD_URL%%,${escaped_binary_download_url}," \
        -e "s,%%ASC_DOWNLOAD_URL%%,$asc_download_url," \
        -e "s/%%GPG_KEY%%/$gpg_key/" \
        -e "s/%%CHECK_GPG%%/${check_gpg}/" \
        -e "s/%%FROM_IMAGE%%/${from_docker_image}/" \
        "Dockerfile-$source_variant.template" > "$dir/Dockerfile"
}

function generateReleaseMetadata {
    dir=$1
    flink_release=$2
    flink_version=$3
    scala_version=$4
    java_version=$5

    # docker image tags:
    java_suffix="-java${java_version}"

    # example "1.2.0-scala_2.11-java11"
    full_tag=${flink_version}-scala_${scala_version}${java_suffix}

    # example "1.2-scala_2.11-java11"
    short_tag=${flink_release}-scala_${scala_version}${java_suffix}

    # example "scala_2.12-java11"
    scala_tag="scala_${scala_version}${java_suffix}"

    tags="$full_tag, $short_tag, $scala_tag"

    if [[ "$java_version" == "$DEFAULT_JAVA" ]]; then
        # example "1.2.0-scala_2.11"
        full_tag=${flink_version}-scala_${scala_version}

        # example "1.2-scala_2.11"
        short_tag=${flink_release}-scala_${scala_version}

        # example "scala_2.12"
        scala_tag="scala_${scala_version}"

        tags="$tags, $full_tag, $short_tag, $scala_tag"
    fi


    if [[ "$scala_version" == "$DEFAULT_SCALA" ]]; then
        # we are generating the image for the latest scala version, add:
        # "1.2.0-java11"
        # "1.2-java11"
        # "java11"
        tags="$tags, ${flink_version}${java_suffix}, ${flink_release}${java_suffix}, java${java_version}"

        if [[ "$java_version" == "$DEFAULT_JAVA" ]]; then
            # we are generating the image for the default java version, add tags w/o java tag:
            # "1.2.0"
            # "1.2"
            # "latest"
            tags="$tags, ${flink_version}, ${flink_release}, latest"
        fi
    fi

    echo "Tags: $tags" >> $dir/release.metadata

    echo "Architectures: amd64,arm64v8" >> $dir/release.metadata
}