sandbox

#!/bin/bash

set -e

# Set up sandbox environment.
export SANDBOX=true
export BASE_DIR=$(cd `dirname "${BASH_SOURCE%/*}"` && pwd)
export SANDBOX_DIR="${BASE_DIR}"
export SANDBOX_PROJECT_NAME="${PWD##*/}"

# Bits and pieces required to run sandbox containers.
export SANDBOX_USER_ID=$(id -u)
export SANDBOX_GROUP_ID=$(id -g)
export SANDBOX_USER_NAME=$(id -un)
export SANDBOX_GROUP_NAME=$(id -gn)


function _stack() {
    #
    # Stack helper function.
    #
    # Wraps docker-compose command for simple invocation.
    #
    docker-compose \
        --project-name ${SANDBOX_PROJECT_NAME} \
        --file docker-compose.sandbox.yml \
        "${@:1}"
}


function _help() {
    #
    # Helper for printing usage info.
    #
    echo
    echo "Manage sandbox."
    echo
    echo "Usage:"
    echo "  sandbox COMMAND [ARGUMENTS]"
    echo
    echo "Available commands:"
    echo "  build [ARGS]            Build or rebuild the stack. Accepts same arguments as 'docker-compose build'."
    echo "  up [ARGS]               Start the stack. Accepts same argument as 'docker-compose up'."
    echo "  down                    Stop the stack."
    echo "  clean                   Run the cleanup."
    echo "  exec SERVICE CMD        Run a one-off command against service."
    echo "  logs [SERVICE]          Attach to logs output."
    echo
}



case ${1:-} in
    "build")
        # Build sandbox.
        _stack build "${@:2}"
        # Clean dangling images.
        docker image prune -f
        ;;
    "clean")
        # Tear down stack.
        _stack down --remove-orphans

        # Clean dangling images.
        docker image prune -f
        ;;
    "exec")
        _stack exec "${@:2}"
        ;;
    "help")
        _help
        ;;
    "logs")
        _stack logs -f "${@:2}"
        ;;
    "up")
        echo -e "Ensuring directories..."
        # Ensure packages directory exists before launching the stack.
        # This allows the mounted volume to have current user's permissions
        # within container.
        mkdir -p ${SANDBOX_DIR}/.data/packages

        echo -e "\033[1;37mLaunching stack...\033[0m"
        _stack up -d ${@:2}

        # Attach terminals.
        echo -e "\033[1;37mAttaching terminals...\033[0m"
        exec gnome-terminal \
            --tab --title "web-app" --command "docker attach --sig-proxy=false `_stack ps -q web-app`" \
            --tab --title "web-api" --command "docker attach --sig-proxy=false `_stack ps -q web-api`" \
            --tab --title "database" --command "docker exec -it `_stack ps -q database` /bin/bash" \
            > /dev/null 2>&1
        ;;
    "down")
        _stack stop "${@:2}"
        ;;
    *)
        _help
esac