#!/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 "$real_path")"
    if [ -z "$SNAP" ]; then
        if [[ ${dir_name} == "/usr/bin" ]]; then
            BASEDIR=/usr/share/kolla-ansible
        elif [[ ${dir_name} == "/usr/local/bin" ]]; then
            BASEDIR=/usr/local/share/kolla-ansible
        elif [[ -n ${VIRTUAL_ENV} ]] && [[ ${dir_name} == "${VIRTUAL_ENV}/bin" ]]; then
            BASEDIR="${VIRTUAL_ENV}/share/kolla-ansible"
        else
            BASEDIR="$(dirname ${dir_name})"
        fi
    else
        BASEDIR="$SNAP/share/kolla-ansible"
    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
    --key -k <key_path>                Specify path to ansible vault keyfile
    --help, -h                         Show this usage information
    --tags, -t <tags>                  Only run plays and tasks tagged with these values
    --skip-tags <tags>                 Only run plays and tasks whose tags do not match 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
    --limit <host>                     Specify host to run plays
    --forks <forks>                    Number of forks to run Ansible with
    --vault-id <@prompt or path>       Specify @prompt or password file (Ansible >=  2.4)
    --ask-vault-pass                   Ask for vault password
    --vault-password-file <path>       Specify password file for vault decrypt
    --verbose, -v                      Increase verbosity of ansible-playbook

Commands:
    prechecks           Do pre-deployment checks for hosts
    check               Do post-deployment smoke tests
    mariadb_recovery    Recover a completely stopped mariadb cluster
    mariadb_backup      Take a backup of MariaDB databases
                            --full (default)
                            --incremental
    bootstrap-servers   Bootstrap servers with kolla deploy dependencies
    destroy             Destroy Kolla containers, volumes and host configuration
                            --include-images to also destroy Kolla images
                            --include-dev to also destroy dev mode repos
    deploy              Deploy and start all kolla containers
    deploy-bifrost      Deploy and start bifrost container
    deploy-servers      Enroll and deploy servers with bifrost
    post-deploy         Do post deploy on deploy node
    pull                Pull all images for containers (only pulls, no running container changes)
    reconfigure         Reconfigure OpenStack service
    stop                Stop Kolla containers
    certificates        Generate self-signed certificate for TLS *For Development Only*
    upgrade             Upgrades existing OpenStack Environment
    genconfig           Generate configuration files for enabled OpenStack services
EOF
}

function bash_completion {
cat <<EOF
--inventory -i
--playbook -p
--configdir
--key -k
--help -h
--skip-tags
--tags -t
--extra -e
--passwords
--limit
--forks
--vault-id
--ask-vault-pass
--vault-password-file
--verbose -v
prechecks
check
mariadb_recovery
mariadb_backup
bootstrap-servers
destroy
deploy
deploy-bifrost
deploy-servers
post-deploy
pull
reconfigure
stop
certificates
upgrade
genconfig
EOF
}

SHORT_OPTS="hi:p:t:k:e:v"
LONG_OPTS="help,inventory:,playbook:,skip-tags:,tags:,key:,extra:,verbose,configdir:,passwords:,limit:,forks:,vault-id:,ask-vault-pass,vault-password-file:,yes-i-really-really-mean-it,include-images,include-dev:,full,incremental"

RAW_ARGS="$*"
ARGS=$(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=${EXTRA_OPTS}
CONFIG_DIR="/etc/kolla"
PASSWORDS_FILE="${CONFIG_DIR}/passwords.yml"
DANGER_CONFIRM=
INCLUDE_IMAGES=
INCLUDE_DEV=
BACKUP_TYPE="full"
# Serial is not recommended and disabled by default. Users can enable it by
# configuring ANSIBLE_SERIAL variable.
ANSIBLE_SERIAL=${ANSIBLE_SERIAL:-0}

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

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

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

    (--skip-tags)
            EXTRA_OPTS="$EXTRA_OPTS --skip-tags $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
            ;;

    (--yes-i-really-really-mean-it)
            if [[ ${RAW_ARGS} =~ "$1" ]]
            then
                DANGER_CONFIRM="$1"
            fi
            shift 1
            ;;

    (--include-images)
            INCLUDE_IMAGES="$1"
            shift 1
            ;;

    (--include-dev)
            INCLUDE_DEV="$1"
            shift 1
            ;;

    (--key|-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
            ;;

    (--limit)
            EXTRA_OPTS="$EXTRA_OPTS --limit $2"
            shift 2
            ;;

    (--forks)
            EXTRA_OPTS="$EXTRA_OPTS --forks $2"
            shift 2
            ;;

    (--vault-id)
            EXTRA_OPTS="$EXTRA_OPTS --vault-id $2"
            shift 2
            ;;

    (--ask-vault-pass)
            VERBOSITY="$EXTRA_OPTS --ask-vault-pass"
            shift 1
            ;;

    (--vault-password-file)
            EXTRA_OPTS="$EXTRA_OPTS --vault-password-file $2"
            shift 2
            ;;

    (--full)
            BACKUP_TYPE="full"
            shift 1
            ;;

    (--incremental)
            BACKUP_TYPE="incremental"
            shift 1
            ;;

    (--help|-h)
            usage
            shift
            exit 0
            ;;

    (--)
            shift
            break
            ;;

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

case "$1" in

(prechecks)
        ACTION="Pre-deployment checking"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=precheck"
        ;;
(check)
        ACTION="Post-deployment checking"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=check"
        ;;
(mariadb_recovery)
        ACTION="Attempting to restart mariadb cluster"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=deploy -e common_run=true"
        PLAYBOOK="${BASEDIR}/ansible/mariadb_recovery.yml"
        ;;
(mariadb_backup)
        ACTION="Backup MariaDB databases"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=backup -e mariadb_backup_type=${BACKUP_TYPE} -e common_run=true"
        PLAYBOOK="${BASEDIR}/ansible/mariadb_backup.yml"
        ;;
(destroy)
        ACTION="Destroy Kolla containers, volumes and host configuration"
        PLAYBOOK="${BASEDIR}/ansible/destroy.yml"
        if [[ "${INCLUDE_IMAGES}" == "--include-images" ]]; then
            EXTRA_OPTS="$EXTRA_OPTS -e destroy_include_images=yes"
        fi
        if [[ "${INCLUDE_DEV}" == "--include-dev" ]]; then
            EXTRA_OPTS="$EXTRA_OPTS -e destroy_include_dev=yes"
        fi
        if [[ "${DANGER_CONFIRM}" != "--yes-i-really-really-mean-it" ]]; then
            cat << EOF
WARNING:
    This will PERMANENTLY DESTROY all deployed kolla containers, volumes and host configuration.
    There is no way to recover from this action. To confirm, please add the following option:
    --yes-i-really-really-mean-it
EOF
            exit 1
        fi
        ;;
(bootstrap-servers)
        ACTION="Bootstraping servers"
        PLAYBOOK="${BASEDIR}/ansible/kolla-host.yml"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=bootstrap-servers"
        ;;
(deploy)
        ACTION="Deploying Playbooks"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=deploy"
        ;;
(deploy-bifrost)
        ACTION="Deploying Bifrost"
        PLAYBOOK="${BASEDIR}/ansible/bifrost.yml"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=deploy"
        ;;
(deploy-servers)
        ACTION="Deploying servers with bifrost"
        PLAYBOOK="${BASEDIR}/ansible/bifrost.yml"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=deploy-servers"
        ;;
(post-deploy)
        ACTION="Post-Deploying Playbooks"
        PLAYBOOK="${BASEDIR}/ansible/post-deploy.yml"
        ;;
(pull)
        ACTION="Pulling Docker images"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=pull"
        ;;
(upgrade)
        ACTION="Upgrading OpenStack Environment"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=upgrade -e kolla_serial=${ANSIBLE_SERIAL}"
        ;;
(reconfigure)
        ACTION="Reconfigure OpenStack service"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=reconfigure -e kolla_serial=${ANSIBLE_SERIAL}"
        ;;
(stop)
        ACTION="Stop Kolla containers"
        PLAYBOOK="${BASEDIR}/ansible/stop.yml"
        ;;
(certificates)
        ACTION="Generate TLS Certificates"
        PLAYBOOK="${BASEDIR}/ansible/certificates.yml"
        ;;
(genconfig)
        ACTION="Generate configuration files for enabled OpenStack services"
        EXTRA_OPTS="$EXTRA_OPTS -e kolla_action=config"
        ;;
(bash-completion)
        bash_completion
        exit 0
        ;;
(*)     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