# Configure the Akamai backend

# Requirements:
# An active Akamai account / contract will be requied to use this DevStack
# plugin.

# Enable with:
# DESIGNATE_BACKEND_DRIVER=akamai

# Dependencies:
# ``functions`` file
# ``designate`` configuration

# install_designate_backend - install any external requirements
# configure_designate_backend - make configuration changes, including those to other services
# init_designate_backend - initialize databases, etc.
# start_designate_backend - start any external services
# stop_designate_backend - stop any external services
# cleanup_designate_backend - remove transient data and cache

# Save trace setting
DP_AKAMAI_XTRACE=$(set +o | grep xtrace)
set +o xtrace

# Defaults
# --------

DESIGNATE_AKAMAI_USERNAME=${DESIGNATE_AKAMAI_USERNAME:-username}
DESIGNATE_AKAMAI_PASSWORD=${DESIGNATE_AKAMAI_PASSWORD:-password}
DESIGNATE_AKAMAI_MASTERS=${DESIGNATE_AKAMAI_MASTERS:-"$DESIGNATE_SERVICE_HOST:$DESIGNATE_SERVICE_PORT_MDNS"}
DESIGNATE_AKAMAI_NAMESERVERS=${DESIGNATE_AKAMAI_NAMESERVERS:-""}
DESIGNATE_AKAMAI_ALSO_NOTIFIES=${DESIGNATE_AKAMAI_ALSO_NOTIFIES:-"193.108.155.34:53,23.73.134.141:53,80.67.64.148:53,23.73.134.237:53,23.73.133.141:53,23.73.133.237:53,80.67.64.10:53,72.246.0.10:53,72.247.45.157:53,72.246.192.168:53,193.108.152.143:53,60.254.128.45:53,72.247.45.110:53,72.247.45.65:53,72.247.45.25:53"}

# Pull in DESIGNATE_3RDPARTY_CREDS user/pass if set
if [ -n "$DESIGNATE_3RDPARTY_CREDS" ]; then
    DESIGNATE_AKAMAI_USERNAME=`echo $DESIGNATE_3RDPARTY_CREDS | cut -f1 -d:`
    DESIGNATE_AKAMAI_PASSWORD=`echo $DESIGNATE_3RDPARTY_CREDS | cut -f2- -d:`
fi

# Sanity Checks
# -------------
if [ -z "$DESIGNATE_AKAMAI_NAMESERVERS" ]; then
    die $LINENO "You must configure DESIGNATE_AKAMAI_NAMESERVERS"
fi

if [ "$DESIGNATE_SERVICE_PORT_MDNS" != "53" ]; then
    die $LINENO "Akamai requires DESIGNATE_SERVICE_PORT_MDNS is set to '53'"
fi

# Entry Points
# ------------

# install_designate_backend - install any external requirements
function install_designate_backend {
    :
}

# configure_designate_backend - make configuration changes, including those to other services
function configure_designate_backend {
    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID type akamai
    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID masters $DESIGNATE_AKAMAI_MASTERS
    iniset $DESIGNATE_CONF pool_target:$DESIGNATE_TARGET_ID options "username: $DESIGNATE_AKAMAI_USERNAME, password: $DESIGNATE_AKAMAI_PASSWORD"

    # Create a Pool Nameserver for each of the Akamai nameservers
    local nameserver_ids=""
    IFS=',' read -a nameservers <<< "$DESIGNATE_AKAMAI_NAMESERVERS"

    for nameserver in "${nameservers[@]}"; do
        local nameserver_id=`uuidgen`
        iniset $DESIGNATE_CONF pool_nameserver:$nameserver_id host $(dig +short A $nameserver | head -n 1)
        iniset $DESIGNATE_CONF pool_nameserver:$nameserver_id port 53

        # Append the Nameserver ID to the list
        nameserver_ids+=${nameserver_id},
    done

    # Configure the Pool for the set of nameserver IDs, minus the trailing comma
    iniset $DESIGNATE_CONF pool:$DESIGNATE_POOL_ID nameservers "${nameserver_ids:0:-1}"

    # Configure the Pool to Notify Akamai's Transfer Agents
    iniset $DESIGNATE_CONF pool:$DESIGNATE_POOL_ID also_notifies "$DESIGNATE_AKAMAI_ALSO_NOTIFIES"
}

# create_designate_ns_records - Create Pool NS Records
function create_designate_ns_records_backend {
    # Build an array of the Akamai nameservers.
    IFS=',' read -a ns_records <<< "$DESIGNATE_AKAMAI_NAMESERVERS"

    # Create a NS Record for each of the Akamai nameservers
    for ns_record in "${ns_records[@]}"; do
        designate server-create --name "${ns_record%%.}."
    done
}

# init_designate_backend - initialize databases, etc.
function init_designate_backend {
    :
}

# start_designate_backend - start any external services
function start_designate_backend {
    :
}

# stop_designate_backend - stop any external services
function stop_designate_backend {
    :
}

# cleanup_designate_backend - remove transient data and cache
function cleanup_designate_backend {
    :
}

# Restore xtrace
$DP_AKAMAI_XTRACE