# Configure the Akamai v2 backend

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

# Enable with:
# DESIGNATE_BACKEND_DRIVER=akamai_v2

# 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_HOST is IP address of the one of AKAMAI_NAMESERVERS
DESIGNATE_HOST=${DESIGNATE_HOST:-"193.108.91.197"}
DESIGNATE_AKAMAI_CLIENT_SECRET=${DESIGNATE_AKAMAI_CLIENT_SECRET:-"client_secret_string"}
DESIGNATE_AKAMAI_HOST=${DESIGNATE_AKAMAI_HOST:-"akamai_host_string"}
DESIGNATE_AKAMAI_ACCESS_TOKEN=${DESIGNATE_AKAMAI_ACCESS_TOKEN:-"access_token_string"}
DESIGNATE_AKAMAI_CLIENT_TOKEN=${DESIGNATE_AKAMAI_CLIENT_TOKEN:-"client_token_string"}
DESIGNATE_AKAMAI_CONTRACT_ID=${DESIGNATE_AKAMAI_CONTRACT_ID:-"contract_id"}
DESIGNATE_AKAMAI_GID=${DESIGNATE_AKAMAI_GID:-"group_id"}
DESIGNATE_AKAMAI_MASTERS=${DESIGNATE_AKAMAI_MASTERS:-"$DESIGNATE_SERVICE_HOST:$DESIGNATE_SERVICE_PORT_MDNS"}
DESIGNATE_AKAMAI_NAMESERVERS=${DESIGNATE_AKAMAI_NAMESERVERS:-""}
DESIGNATE_AKAMAI_ALSO_NOTIFIES=${DESIGNATE_AKAMAI_ALSO_NOTIFIES:-"23.14.128.185,23.207.197.166,23.205.121.134,104.122.95.88,72.247.124.98"}

# 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 {
    # Generate Designate pool.yaml file
    sudo tee $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
---
- name: default
  description: DevStack Akamai Pool
  attributes: {}

  targets:
    - type: akamai
      description: Akamai API
      options:
        host: $DESIGNATE_HOST
        port: 53
        akamai_client_secret: $DESIGNATE_AKAMAI_CLIENT_SECRET
        akamai_host: $DESIGNATE_AKAMAI_HOST
        akamai_access_token: $DESIGNATE_AKAMAI_ACCESS_TOKEN
        akamai_client_token: $DESIGNATE_AKAMAI_CLIENT_TOKEN
        akamai_contract_id: $DESIGNATE_AKAMAI_CONTRACT_ID
        akamai_gid: $DESIGNATE_AKAMAI_GID

        # NOTE: TSIG key has to be set manully if it's necessary
        #tsig_key_name: key_test
        #tsig_key_algorithm: hmac-sha512
        #tsig_key_secret: test_ley_secret


      masters:
EOF

    # Create a Pool Master for each of the Akamai Masters
    IFS=',' read -a masters <<< "$DESIGNATE_AKAMAI_MASTERS"

    for master in "${masters[@]}"; do
        sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
        - host: $master
          port: 53
EOF
    done

    # Create a Pool NS Record for each of the Akamai Nameservers
    IFS=',' read -a nameservers <<< "$DESIGNATE_AKAMAI_NAMESERVERS"

    sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
  ns_records:
EOF

    for nameserver in "${nameservers[@]}"; do
        sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
    - hostname: $nameserver
      priority: 1
EOF
    done

    # Create a Pool Nameserver for each of the Akamai Nameservers
    sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
  nameservers:
EOF

    for nameserver in "${nameservers[@]}"; do
        sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
    - host: `dig +short A $nameserver | head -n 1`
      port: 53
EOF
    done

    # Create a Pool Also Notifies for each of the Akamai Also Notifies
    IFS=',' read -a also_notifies <<< "$DESIGNATE_AKAMAI_ALSO_NOTIFIES"

    sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
  also_notifies:
EOF

    for also_notify in "${also_notifies[@]}"; do
        sudo tee -a $DESIGNATE_CONF_DIR/pools.yaml > /dev/null <<EOF
    - host: $also_notify
      port: 53
EOF
    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