#!/usr/bin/env bash
#
# Bootstrap script to configure all nodes.
#
# This script is intended to be used by vagrant to provision nodes.
# To use it, set it as 'PROVISION_SCRIPT' inside your Vagrantfile.custom.
# You can use Vagrantfile.custom.example as a template for this.

VM=$1
MODE=$2
KOLLA_PATH=$3

export http_proxy=
export https_proxy=

if [ "$MODE" = 'aio' ]; then
    # Run registry on port 4000 since it may collide with keystone when doing AIO
    REGISTRY_PORT=4000
    SUPPORT_NODE=operator
else
    REGISTRY_PORT=5000
    SUPPORT_NODE=support01
fi
REGISTRY_URL="operator.local"
REGISTRY=${REGISTRY_URL}:${REGISTRY_PORT}
ADMIN_PROTOCOL="http"

function _ensure_lsb_release {
    if [[ -x $(which lsb_release 2>/dev/null) ]]; then
        return
    fi

    if [[ -x $(which apt-get 2>/dev/null) ]]; then
        apt-get install -y lsb-release
    elif [[ -x $(which yum 2>/dev/null) ]]; then
        yum -y install redhat-lsb-core
    fi
}

function _is_distro {
    if [[ -z "$DISTRO" ]]; then
        _ensure_lsb_release
        DISTRO=$(lsb_release -si)
    fi

    [[ "$DISTRO" == "$1" ]]
}

function is_ubuntu {
    _is_distro "Ubuntu"
}

function is_centos {
    _is_distro "CentOS"
}

# Install common packages and do some prepwork.
function prep_work {
    if [[ "$(systemctl is-enabled firewalld)" = "enabled" ]]; then
        systemctl stop firewalld
        systemctl disable firewalld
    fi

    # This removes the fqdn from /etc/hosts's 127.0.0.1. This name.local will
    # resolve to the public IP instead of localhost.
    sed -i -r "s/^(127\.0\.0\.1\s+)(.*) `hostname` (.+)/\1 \3/" /etc/hosts

    if is_centos; then
        yum -y install epel-release
        rpm --import /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7
        yum -y install MySQL-python vim-enhanced python-pip python-devel gcc openssl-devel libffi-devel libxml2-devel libxslt-devel
    elif is_ubuntu; then
        apt-get update
        apt-get install -y python-mysqldb python-pip python-dev build-essential libssl-dev libffi-dev libxml2-dev libxslt-dev
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi

    pip install --upgrade docker-py
}

# Do some cleanup after the installation of kolla
function cleanup {
    if is_centos; then
        yum clean all
    elif is_ubuntu; then
        apt-get clean
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi
}

# Install and configure a quick&dirty docker daemon.
function install_docker {
    if is_centos; then
        cat >/etc/yum.repos.d/docker.repo <<-EOF
[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/7
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg
EOF
        # Also upgrade device-mapper here because of:
        # https://github.com/docker/docker/issues/12108
        # Upgrade lvm2 to get device-mapper installed
        yum -y install docker-engine lvm2 device-mapper

        # Despite it shipping with /etc/sysconfig/docker, Docker is not configured to
        # load it from it's service file.
        sed -i -r "s|(ExecStart)=(.+)|\1=/usr/bin/docker daemon --insecure-registry ${REGISTRY} --registry-mirror=http://${REGISTRY}|" /usr/lib/systemd/system/docker.service
        sed -i 's|^MountFlags=.*|MountFlags=shared|' /usr/lib/systemd/system/docker.service

        usermod -aG docker vagrant
    elif is_ubuntu; then
        apt-key adv --keyserver hkp://pgp.mit.edu:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D
        echo "deb https://apt.dockerproject.org/repo ubuntu-wily main" > /etc/apt/sources.list.d/docker.list
        apt-get update
        apt-get install -y docker-engine
        sed -i -r "s,(ExecStart)=(.+),\1=/usr/bin/docker daemon --insecure-registry ${REGISTRY} --registry-mirror=http://${REGISTRY}|" /lib/systemd/system/docker.service
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi

    if [[ "${http_proxy}" != "" ]]; then
        mkdir -p /etc/systemd/system/docker.service.d
        cat >/etc/systemd/system/docker.service.d/http-proxy.conf <<-EOF
[Service]
Environment="HTTP_PROXY=${http_proxy}" "HTTPS_PROXY=${https_proxy}"
"NO_PROXY=localhost,127.0.0.1,${REGISTRY_URL}"
EOF

        if [[ "$(grep http_ /etc/bashrc)" == "" ]]; then
            echo "export http_proxy=${http_proxy}" >> /etc/bashrc
            echo "export https_proxy=${https_proxy}" >> /etc/bashrc
        fi
    fi

    systemctl daemon-reload
    systemctl enable docker
    systemctl start docker
}

function configure_kolla {
    # Use local docker registry
    sed -i -r "s,^[# ]*namespace *=.+$,namespace = ${REGISTRY}/lokolla," /etc/kolla/kolla-build.conf
    sed -i -r "s,^[# ]*push *=.+$,push = True," /etc/kolla/kolla-build.conf
    sed -i -r "s,^[# ]*docker_registry:.+$,docker_registry: \"${REGISTRY}\"," /etc/kolla/globals.yml
    sed -i -r "s,^[# ]*docker_namespace:.+$,docker_namespace: \"lokolla\"," /etc/kolla/globals.yml
    sed -i -r "s,^[# ]*docker_insecure_registry:.+$,docker_insecure_registry: \"True\"," /etc/kolla/globals.yml
    # Set network interfaces
    sed -i -r "s,^[# ]*network_interface:.+$,network_interface: \"eth1\"," /etc/kolla/globals.yml
    sed -i -r "s,^[# ]*neutron_external_interface:.+$,neutron_external_interface: \"eth2\"," /etc/kolla/globals.yml
}

# Configure the operator node and install some additional packages.
function configure_operator {
    if is_centos; then
        yum -y install git mariadb
    elif is_ubuntu; then
        apt-get install -y git mariadb-client selinux-utils
    else
        echo "Unsupported Distro: $DISTRO" 1>&2
        exit 1
    fi

    pip install --upgrade "ansible<2" python-openstackclient python-neutronclient tox

    pip install ${KOLLA_PATH}

    # Set selinux to permissive
    if [[ "$(getenforce)" == "Enforcing" ]]; then
        sed -i -r "s,^SELINUX=.+$,SELINUX=permissive," /etc/selinux/config
        setenforce permissive
    fi

    tox -c ${KOLLA_PATH}/tox.ini -e genconfig
    cp -r ${KOLLA_PATH}/etc/kolla/ /etc/kolla
    ${KOLLA_PATH}/tools/generate_passwords.py
    mkdir -p /usr/share/kolla
    chown -R vagrant: /etc/kolla /usr/share/kolla

    configure_kolla

    # Make sure Ansible uses scp.
    cat > ~vagrant/.ansible.cfg <<EOF
[defaults]
forks=100

[ssh_connection]
scp_if_ssh=True
EOF
    chown vagrant: ~vagrant/.ansible.cfg

    mkdir -p /etc/kolla/config/nova/
    cat > /etc/kolla/config/nova/nova-compute.conf <<EOF
[libvirt]
virt_type=qemu
EOF

    # Launch a local registry (and mirror) to speed up pulling images.
    if [[ ! $(docker ps -a -q -f name=registry) ]]; then
        docker run -d \
            --name registry \
            --restart=always \
            -p ${REGISTRY_PORT}:5000 \
            -e STANDALONE=True \
            -e MIRROR_SOURCE=https://registry-1.docker.io \
            -e MIRROR_SOURCE_INDEX=https://index.docker.io \
            -e STORAGE_PATH=/var/lib/registry \
            -v /data/host/registry-storage:/var/lib/registry \
            registry:2
    fi
}

prep_work
install_docker

if [[ "$VM" = "operator" ]]; then
    configure_operator
fi

cleanup