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

# Move to top level directory
REAL_PATH=$(python -c "import os,sys;print os.path.realpath('$0')")
cd "$(dirname "$REAL_PATH")/.."

. tools/validate-docker-execute

NETWORK_MANAGER=$(grep -sri NETWORK_MANAGER ./compose/openstack.env | cut -f2 -d'=')
if [[ -z "$NETWORK_MANAGER" ]]; then
    echo 'No network manager defined in ./compose/openstack.env, defaulting to "neutron".'
    NETWORK_MANAGER="neutron"
fi

function process {
    local service=$1
    echo "$ACTION $service"
    docker-compose -f ./compose/${service}.yml $COMPOSE_CMD
    if [[ $? -ne 0 ]]; then
        echo "Call docker-compose -f ./compose/${service}.yml $COMPOSE_CMD fail."
        exit 1
    fi
}

function process_all {
    process rabbitmq
    process mariadb
    process keystone
    process glance-api-registry
    process nova-api-conductor-scheduler-consoleauth-novncproxy
    if [[ "${NETWORK_MANAGER}" == "nova" ]] ; then
        process nova-compute-network
    else
        # Defaulting to neutron
        process nova-compute
        process neutron-server
        process neutron-linuxbridge-agent
        process neutron-agents
    fi
    process heat-api-engine
    process magnum-api-conductor
    process horizon
    process cinder-api-scheduler
    process cinder-backup
    process cinder-volume
    process ceilometer
    # TODO(coolsvap) add again with resolution for #LP1478145
    #process gnocchi
}

function check_selinux {
    # Check for SELinux in Enforcing mode and exit if found
    if [[ -x /usr/sbin/getenforce ]]; then
        if [[ $(/usr/sbin/getenforce) == "Enforcing" ]]; then
            echo "You must execute this script without SELinux enforcing mode."
            echo "Turn off SELinux enforcing mode by running:"
            echo "$ sudo setenforce permissive"
            exit 1
        fi
    fi
}

function pre_start {
    check_selinux

    if [[ -r ./openrc ]]; then
        # Source openrc for commands
        source ./openrc
    else
        echo 'Could not find ./openrc; bootstrap your environment with "./tools/genenv".'
        exit 1
    fi
}

function post_start {
    echo -n "Waiting for OpenStack services to become available"

    until [ $(nova service-list 2>&1 | grep -c enabled) -ge 4 ]; do
        echo -n .
        sleep 2
    done

    until [ $(neutron agent-list 2>&1 | grep -c ':-)') -ge 4 ]; do
        echo -n .
        sleep 2
    done
    echo " done"

    echo Example Usage:
    echo source openrc # source keystone credentials

    echo Configure your environment once by running:
    echo tools/init-runonce
}

function usage {
    cat <<EOF
Usage: $0 COMMAND

Commands:
    pull    Pull all of the Docker images
    start   Start all kolla containers
    status  List running kolla containers
    stop    Stop all kolla containers
    restart Restart all kolla containers
    destroy Kill and remove all kolla containers and volumes
EOF
}

case "$1" in

(pull)
            ACTION="Pulling"
            COMPOSE_CMD="pull"
            process_all
            ;;

(start)
            ACTION="Starting"
            COMPOSE_CMD="up -d"
            pre_start
            process_all
            post_start
            ;;

(restart)
            ACTION="Restarting"
            COMPOSE_CMD="restart"
            process_all
            ;;

(status)
            ACTION="Status of"
            COMPOSE_CMD="ps"
            process_all
            ;;

(stop)
            ACTION="Stopping"
            COMPOSE_CMD="stop"
            process_all
            ;;

(destroy)
            ACTION="Destroying"
            COMPOSE_CMD="kill"
            process_all
            COMPOSE_CMD="rm -f -v"
            process_all
            ;;

(*)         usage
            exit 0
            ;;
esac