version: 2.1

jobs:
# ====================================================================================
  share_env_var_between_steps_failure:
    docker:
      - image: circleci/openjdk:8-jdk
    steps:
      - run: MY_VAR='Hello, World!'
      - run: echo "$MY_VAR"
      - run: echo "This should be a failure"

# ====================================================================================
  share_env_var_between_steps_success:
    docker:
      - image: circleci/openjdk:8-jdk
    steps:
      - run: echo "export MY_VAR='Hello, World!'" >> $BASH_ENV
      - run: echo "$MY_VAR"
      - run: echo "This should be a success"

# ====================================================================================
  share_env_var_between_jobs_set:
    docker:
      - image: circleci/openjdk:8-jdk
    steps:
      - run: echo "export MY_VAR='Hello, World!'" >> $BASH_ENV
      - run: echo "export MY_SECOND_VAR='Hello, Mad World!'" >> $BASH_ENV
      - run: cat $BASH_ENV >> env_vars
      - run: cat env_vars
      - persist_to_workspace:
          root: .
          paths: ./*

# ====================================================================================
  share_env_var_between_jobs_get:
    docker:
      - image: circleci/openjdk:8-jdk
    steps:
      - attach_workspace:
          at: .
      - run: echo "$MY_VAR"
      - run: cat env_vars >> $BASH_ENV
      - run: source $BASH_EN # don't forget to do this if you don't use a circleci docker image
      - run: echo "$MY_VAR"
      - run: echo "$MY_SECOND_VAR"
      - run: echo "This should be a success"


workflows:
  version: 2

  share_env_var_between_steps_failure:
    jobs:
      - share_env_var_between_steps_failure

  share_env_var_between_steps_success:
    jobs:
      - share_env_var_between_steps_success

  share_env_var_between_jobs:
    jobs:
      - share_env_var_between_jobs_set
      - share_env_var_between_jobs_get:
          requires:
            - share_env_var_between_jobs_set