Multi CI - Travis CI and Circle CI

build.sh

#!/bin/bash

# Stop on error
set -e

main() {
    init
    setup_git
    buildArtifact
}

init() {
    exeinf "Starting..."
}

# From gist - https://gist.github.com/Bost/54291d824149f0c4157b40329fceb02c
tstp() {
    date +"%Y-%m-%d %H:%M:%S,%3N"
}
# From gist - https://gist.github.com/Bost/54291d824149f0c4157b40329fceb02c
exeinf() {
    echo "INFO " $(tstp) "$ "$@
}
# From gist - https://gist.github.com/Bost/54291d824149f0c4157b40329fceb02c
exeerr() {
    echo "ERROR" $(tstp) "$ "$@
}

setup_git() {
    exeinf "Setting up git"
    git config --global user.email "[email protected]"
    git config --global user.name "Travis CI"
}

pushTagsAndCommit() {
    exeinf "Pushing tags"
    git push --tags
    exeinf "Pushing maven commit"
    git push -u origin release
}

#Required as mvn:release bumps tags
buildDockerImageFromLatestTag() {
    latesttag=$(git describe --tags)
    exeinf "Checking out latest tags ${latesttag}"
    git checkout ${latesttag}
    mvn package docker:build -DskipTests
}

buildArtifact() {
    if [[ $TRAVIS_BRANCH == "release" ]] || [[ $CIRCLE_BRANCH = "release" ]]; then
        exeinf "Release build"
        if [[ ! -z $TRAVIS_BRANCH ]]; then
            export TRAVIS_TAG="TRAVIS.$TRAVIS_BUILD_NUMBER"
            git tag "$TRAVIS_TAG" "$TRAVIS_COMMIT"
        elif [[ ! -z $CIRCLE_BRANCH ]]; then
            export CIRCLECI_TAG="CIRCLE.$CIRCLE_BUILD_NUM"
            git tag "$CIRCLECI_TAG"
        fi

        #Just do a dry run on TravisCI
        if [[ $TRAVIS_BRANCH == "release" ]]; then
            mvn -B -s .travis/settings.xml release:clean release:prepare -DdryRun=true
        fi

        #Only perform full release on circleci
        if [[ $CIRCLE_BRANCH = "release" ]] && [[ -z $CIRCLE_TAG ]]; then
            exeinf "Performing maven release"
            mvn -B -s .travis/settings.xml release:clean release:prepare release:perform -DscmCommentPrefix="[skip ci] [maven-release-plugin] "

            pushTagsAndCommit
            buildDockerImageFromLatestTag
        fi
    else
        exeinf "Snapshot build"
        mvn -s .travis/settings.xml deploy docker:build
    fi
}

main "$@"