#!/bin/bash
#
# This script can be used to interact with kolla via ansible.

function find_base_dir {
    local real_path=$(python -c "import os;print(os.path.realpath('$0'))")
    local dir_name="$(dirname "$real_path")"
    if [[ ${dir_name} == "/usr/bin" ]]; then
        BASEDIR=/usr/share/kolla
    elif [[ ${dir_name} == "/usr/local/bin" ]]; then
        BASEDIR=/usr/local/share/kolla
    else
        BASEDIR="$(dirname ${dir_name})"
    fi
}

function process_cmd {
    echo "$ACTION : $CMD"
    $CMD
    if [[ $? -ne 0 ]]; then
        echo "Command failed $CMD"
        exit 1
    fi
}

function usage {
    cat <<EOF
Usage: $0 COMMAND [options]

Options:
    --inventory, -i <inventory_path>   Specify path to ansible inventory file
    --playbook, -p <playbook_path>     Specify path to ansible playbook file
    --configdir <config_path>          Specify path to directory with globals.yml
    --keyfile, -k <key_file>           Specify path to ansible vault keyfile
    --help, -h                         Show this usage information
    --tags, -t <tags>                  Only run plays and tasks tagged with these values
    --extra, -e <ansible variables>    Set additional variables as key=value or YAML/JSON passed to ansible-playbook
    --passwords <passwords_path>       Specify path to the passwords file
    --verbose, -v                      Increase verbosity of ansible-playbook

Commands:
    prechecks           Do pre-deployment checks for hosts
    mariadb_recovery    Recover a completely stopped mariadb cluster
    deploy              Deploy and start all kolla containers
    cleanup             Cleanup containers, volumes and host
    post-deploy         Do post deploy on deploy node
    pull                Pull all images for containers (only pulls, no running container changes)
    reconfigure         Reconfigure OpenStack service
    certificates        Generate self-signed certificate for TLS *For Development Only*
    upgrade             Upgrades existing OpenStack Environment
    genconfig           Generate configuration files for enabled OpenStack services
EOF
}


SHORT_OPTS="hi:p:t:k:e:v"
LONG_OPTS="help,inventory:,playbook:,tags:,keyfile:,extra:,verbose,configdir:,passwords:,"
ARGS=$(getopt -o "${SHORT_OPTS}" -l "${LONG_OPTS}" --name "$0" -- "$@") || { usage >&2; exit 2; }

eval set -- "$ARGS"

find_base_dir

INVENTORY="${BASEDIR}/ansible/inventory/all-in-one"
PLAYBOOK="${BASEDIR}/ansible/site.yml"
VERBOSITY=
EXTRA_OPTS=
CONFIG_DIR="/etc/kolla"
PASSWORDS_FILE="${CONFIG_DIR}/passwords.yml"

while [ "$#" -gt 0 ]; do
    case "$1" in

    (--inventory|-i)
            INVENTORY="$2"
            shift 2
            ;;

    (--playbook|-p)
            PLAYBOOK="$2"
            shift 2
            ;;

    (--tags|-t)
            EXTRA_OPTS="$EXTRA_OPTS --tags $2"
            shift 2
            ;;

    (--verbose|-v)
            VERBOSITY="$VERBOSITY --verbose"
            shift 1
            ;;

    (--configdir)
            CONFIG_DIR="$2"
            shift 2
            ;;

    (--keyfile|-k)
            VAULT_PASS_FILE="$2"
            EXTRA_OPTS="$EXTRA_OPTS --vault-password-file=$VAULT_PASS_FILE"
            shift 2
            ;;

    (--extra|-e)
            EXTRA_OPTS="$EXTRA_OPTS -e $2"
            shift 2
            ;;
    (--passwords)
            PASSWORDS_FILE="$2"
            shift 2
            ;;
    (--help|-h)
            usage
            shift
            exit 0
            ;;

    (--)
            shift
            break
            ;;

    (*)
            echo "error"
            exit 3
            ;;
esac
done

case "$1" in

(prechecks)
        ACTION="Pre-deployment checking"
        PLAYBOOK="${BASEDIR}/ansible/prechecks.yml"
        ;;
(mariadb_recovery)
        ACTION="Attempting to restart mariadb cluster"
        EXTRA_OPTS="$EXTRA_OPTS -e action=deploy"
        PLAYBOOK="${BASEDIR}/ansible/mariadb_recovery.yml"
        ;;
(cleanup)
        ACTION="Cleanup containers, volumes and host"
        PLAYBOOK="${BASEDIR}/ansible/cleanup.yml"
        ;;
(deploy)
        ACTION="Deploying Playbooks"
        EXTRA_OPTS="$EXTRA_OPTS -e action=deploy"
        ;;
(post-deploy)
        ACTION="Post-Deploying Playbooks"
        PLAYBOOK="${BASEDIR}/ansible/post-deploy.yml"
        ;;
(pull)
        ACTION="Pulling Docker images"
        EXTRA_OPTS="$EXTRA_OPTS -e action=pull"
        ;;
(upgrade)
        ACTION="Upgrading OpenStack Environment"
        EXTRA_OPTS="$EXTRA_OPTS -e action=upgrade"
        ;;
(reconfigure)
        ACTION="Reconfigure OpenStack service"
        EXTRA_OPTS="$EXTRA_OPTS -e action=reconfigure"
        ;;
(certificates)
        ACTION="Generate TLS Certificates"
        PLAYBOOK="${BASEDIR}/ansible/certificates.yml"
        ;;
(genconfig)
        ACTION="Generate configuration files for enabled OpenStack services"
        EXTRA_OPTS="$EXTRA_OPTS -e action=config"
        ;;
(*)     usage
        exit 0
        ;;
esac

CONFIG_OPTS="-e @${CONFIG_DIR}/globals.yml -e @${PASSWORDS_FILE} -e CONFIG_DIR=${CONFIG_DIR}"
CMD="ansible-playbook -i $INVENTORY $CONFIG_OPTS $EXTRA_OPTS $PLAYBOOK $VERBOSITY"
process_cmd