language: java
os: linux
dist: trusty

addons:
  hosts:
    - oshi
  hostname: oshi

cache:
  directories:
    - $HOME/.m2

before_install:
  - |
    if ! git diff --name-only $TRAVIS_COMMIT_RANGE | grep -qvE '(\.md$)|(\.yml$)|(\.yaml$))'
    then
      echo "Not running CI since only docs were changed."
      travis_terminate 0
    fi
  # Need to install our own arm64 jdk and set JAVA_HOME
  - if [ "${TRAVIS_CPU_ARCH}" = "arm64" ]; then
      sudo apt-get -m install openjdk-11-jdk maven;
      export JAVA_HOME=/usr/lib/jvm/java-11-openjdk-arm64;
      export PATH=$JAVA_HOME:$PATH;
    fi

# enable to get a stack trace on failed builds
# install:
#   - ./mvnw install -DskipTests=true -Dmaven.javadoc.skip=true -B -V -X

script:
  - if [ "${TRAVIS_BRANCH}" = "master" ]; then
      java -version;
      mvn test;
    fi

# 4 concurrent builds on travis-ci.com but limit to what's not covered by other CI
# Github Actions handles Windows, macOS, and Linux
# Cirrus CI handles FreeBSD
jobs:
  include:
    - name: "Linux JDK11 ARM"
      if: branch = master
      os: linux
      arch: arm64