#!/bin/bash
#
# Neutron Cisco plugin
# ---------------------------

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

# Scecify the VSM parameters
Q_CISCO_PLUGIN_VSM_IP=${Q_CISCO_PLUGIN_VSM_IP:-}
# Specify the VSM username
Q_CISCO_PLUGIN_VSM_USERNAME=${Q_CISCO_PLUGIN_VSM_USERNAME:-admin}
# Specify the VSM passward for above username
Q_CISCO_PLUGIN_VSM_PASSWORD=${Q_CISCO_PLUGIN_VSM_PASSWORD:-}
# Specify the uVEM integration bridge name
Q_CISCO_PLUGIN_INTEGRATION_BRIDGE=${Q_CISCO_PLUGIN_INTEGRATION_BRIDGE:-br-int}
# Specify if tunneling is enabled
Q_CISCO_PLUGIN_ENABLE_TUNNELING=${Q_CISCO_PLUGIN_ENABLE_TUNNELING:-True}
# Specify the VXLAN range
Q_CISCO_PLUGIN_VXLAN_ID_RANGES=${Q_CISCO_PLUGIN_VXLAN_ID_RANGES:-5000:10000}
# Specify the VLAN range
Q_CISCO_PLUGIN_VLAN_RANGES=${Q_CISCO_PLUGIN_VLAN_RANGES:-vlan:1:4094}

# This routine put a prefix on an existing function name
function _prefix_function {
    declare -F $1 > /dev/null || die "$1 doesn't exist"
    eval "$(echo "${2}_${1}()"; declare -f ${1} | tail -n +2)"
}

function _has_n1kv_subplugin {
    local subplugin
    for subplugin in ${Q_CISCO_PLUGIN_SUBPLUGINS[@]}; do
        if [[ "$subplugin" == "n1kv" ]]; then
            return 0
        fi
    done
    return 1
}

# Prefix openvswitch plugin routines with "ovs" in order to differentiate from
# cisco plugin routines. This means, ovs plugin routines will coexist with cisco
# plugin routines in this script.
source $TOP_DIR/lib/neutron_plugins/openvswitch
_prefix_function neutron_plugin_create_nova_conf ovs
_prefix_function neutron_plugin_install_agent_packages ovs
_prefix_function neutron_plugin_configure_common ovs
_prefix_function neutron_plugin_configure_dhcp_agent ovs
_prefix_function neutron_plugin_configure_l3_agent ovs
_prefix_function neutron_plugin_configure_plugin_agent ovs
_prefix_function neutron_plugin_configure_service ovs
_prefix_function neutron_plugin_setup_interface_driver ovs
_prefix_function has_neutron_plugin_security_group ovs

function has_neutron_plugin_security_group {
    return 1
}

function is_neutron_ovs_base_plugin {
    return
}

# populate required nova configuration parameters
function neutron_plugin_create_nova_conf {
    _neutron_ovs_base_configure_nova_vif_driver
}

function neutron_plugin_install_agent_packages {
    # Cisco plugin uses openvswitch to operate in one of its configurations
    ovs_neutron_plugin_install_agent_packages
}

# Configure common parameters
function neutron_plugin_configure_common {
    # setup default subplugins
    if [ ! -v Q_CISCO_PLUGIN_SUBPLUGINS ]; then
        declare -ga Q_CISCO_PLUGIN_SUBPLUGINS
        Q_CISCO_PLUGIN_SUBPLUGINS=(n1kv)
    fi
    Q_PLUGIN_CONF_PATH=etc/neutron/plugins/cisco
    Q_PLUGIN_CONF_FILENAME=cisco_plugins.ini
    Q_PLUGIN_CLASS="neutron.plugins.cisco.network_plugin.PluginV2"
}

function neutron_plugin_configure_dhcp_agent {
    iniset $Q_DHCP_CONF_FILE DEFAULT dhcp_agent_manager neutron.agent.dhcp_agent.DhcpAgentWithStateReport
}

function neutron_plugin_configure_l3_agent {
    :
}

# Configure n1kv plugin
function _configure_n1kv_subplugin {
    local cisco_cfg_file=$1

    # populate the cisco plugin cfg file with the VSM information
    echo "Configuring n1kv in $cisco_cfg_file-- $Q_CISCO_PLUGIN_VSM_IP $Q_CISCO_PLUGIN_VSM_USERNAME $Q_CISCO_PLUGIN_VSM_PASSWORD"
    iniset $cisco_cfg_file N1KV:$Q_CISCO_PLUGIN_VSM_IP username $Q_CISCO_PLUGIN_VSM_USERNAME
    iniset $cisco_cfg_file N1KV:$Q_CISCO_PLUGIN_VSM_IP password $Q_CISCO_PLUGIN_VSM_PASSWORD

    iniset $cisco_cfg_file CISCO_N1K integration_bridge $Q_CISCO_PLUGIN_INTEGRATION_BRIDGE
    iniset $cisco_cfg_file CISCO_N1K enable_tunneling $Q_CISCO_PLUGIN_ENABLE_TUNNELING
    iniset $cisco_cfg_file CISCO_N1K vxlan_id_ranges $Q_CISCO_PLUGIN_VXLAN_ID_RANGES
    iniset $cisco_cfg_file CISCO_N1K network_vlan_ranges $Q_CISCO_PLUGIN_VLAN_RANGES

    # Setup the integration bridge by calling the ovs_base
    OVS_BRIDGE=$Q_CISCO_PLUGIN_INTEGRATION_BRIDGE
    _neutron_ovs_base_setup_bridge $OVS_BRIDGE
}

function neutron_plugin_configure_plugin_agent {
    :
}

function neutron_plugin_configure_service {
    local subplugin
    local cisco_cfg_file

    cisco_cfg_file=/$Q_PLUGIN_CONF_FILE

    # Setup the [CISCO_PLUGINS] section
    if [[ ${#Q_CISCO_PLUGIN_SUBPLUGINS[@]} > 2 ]]; then
        die $LINENO "At most two subplugins are supported."
    fi

    # Setup the subplugins
    inicomment $cisco_cfg_file CISCO_PLUGINS vswitch_plugin
    inicomment $cisco_cfg_file CISCO_TEST host
    for subplugin in ${Q_CISCO_PLUGIN_SUBPLUGINS[@]}; do
        case $subplugin in
            n1kv) iniset $cisco_cfg_file CISCO_PLUGINS vswitch_plugin neutron.plugins.cisco.n1kv.n1kv_neutron_plugin.N1kvNeutronPluginV2;;
            *) die $LINENO "Unsupported cisco subplugin: $subplugin";;
        esac
    done

    if _has_n1kv_subplugin; then
        _configure_n1kv_subplugin $cisco_cfg_file
    fi
}

function neutron_plugin_create_initial_network_profile {
    neutron cisco-network-profile-create default_network_profile vlan --segment_range 1-3000 --physical_network "$1"
}

function neutron_plugin_setup_interface_driver {
    local conf_file=$1
    iniset $conf_file DEFAULT interface_driver openvswitch
}

# Restore xtrace
$_XTRACE_NEUTRON_CISCO