#!/bin/bash
 #

 # OpenFlow Agent plugin
 # ----------------------
 
 # Save trace setting

 OFA_XTRACE=$(set +o | grep xtrace)

 set +o xtrace
 
 source $TOP_DIR/lib/neutron_plugins/ovs_base
 source $TOP_DIR/lib/neutron_thirdparty/ryu  # for RYU_DIR, install_ryu, etc
 
 function neutron_plugin_create_nova_conf {
     _neutron_ovs_base_configure_nova_vif_driver
 }
 
 function neutron_plugin_install_agent_packages {
     _neutron_ovs_base_install_agent_packages
 
     # This agent uses ryu to talk with switches
     install_package $(get_packages "ryu")
     install_ryu
 }
 
 function neutron_plugin_configure_debug_command {
     _neutron_ovs_base_configure_debug_command
 }
 
 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 {
     _neutron_ovs_base_configure_l3_agent
     iniset $Q_L3_CONF_FILE DEFAULT l3_agent_manager neutron.agent.l3_agent.L3NATAgentWithStateReport
 }
 

 function _neutron_ofagent_configure_firewall_driver {
     if [[ "$Q_USE_SECGROUP" == "True" ]]; then
         iniset /$Q_PLUGIN_CONF_FILE securitygroup firewall_driver neutron.agent.linux.iptables_firewall.IptablesFirewallDriver
     else
         iniset /$Q_PLUGIN_CONF_FILE securitygroup firewall_driver neutron.agent.firewall.NoopFirewallDriver
     fi
 }
 

 function neutron_plugin_configure_plugin_agent {
     # Set up integration bridge
     _neutron_ovs_base_setup_bridge $OVS_BRIDGE

     _neutron_ofagent_configure_firewall_driver

 
     # Check a supported openflow version
     OF_VERSION=`ovs-ofctl --version | grep "OpenFlow versions" | awk '{print $3}' | cut -d':' -f2`
     if [ `vercmp_numbers "$OF_VERSION" "0x3"` -lt "0" ]; then
         die $LINENO "This agent requires OpenFlow 1.3+ capable switch."
     fi
 
     # Enable tunnel networks if selected

     if [[ "$OVS_ENABLE_TUNNELING" == "True" ]]; then

         # Verify tunnels are supported
         # REVISIT - also check kernel module support for GRE and patch ports
         OVS_VERSION=`ovs-vsctl --version | head -n 1 | grep -E -o "[0-9]+\.[0-9]+"`
         if [ `vercmp_numbers "$OVS_VERSION" "1.4"` -lt "0" ]; then
             die $LINENO "You are running OVS version $OVS_VERSION. OVS 1.4+ is required for tunneling between multiple hosts."
         fi

         iniset /$Q_PLUGIN_CONF_FILE ovs local_ip $TUNNEL_ENDPOINT_IP

     fi
 
     # Setup physical network bridge mappings.  Override
     # ``OVS_VLAN_RANGES`` and ``OVS_BRIDGE_MAPPINGS`` in ``localrc`` for more
     # complex physical network configurations.

     if [[ "$OVS_BRIDGE_MAPPINGS" == "" ]] && [[ "$PHYSICAL_NETWORK" != "" ]] && [[ "$OVS_PHYSICAL_BRIDGE" != "" ]]; then

         OVS_BRIDGE_MAPPINGS=$PHYSICAL_NETWORK:$OVS_PHYSICAL_BRIDGE
 
         # Configure bridge manually with physical interface as port for multi-node
         sudo ovs-vsctl --no-wait -- --may-exist add-br $OVS_PHYSICAL_BRIDGE
     fi
     if [[ "$OVS_BRIDGE_MAPPINGS" != "" ]]; then
         iniset /$Q_PLUGIN_CONF_FILE ovs bridge_mappings $OVS_BRIDGE_MAPPINGS
     fi

     if [[ "$OFAGENT_PHYSICAL_INTERFACE_MAPPINGS" != "" ]]; then
         iniset /$Q_PLUGIN_CONF_FILE agent physical_interface_mappings \
             $OFAGENT_PHYSICAL_INTERFACE_MAPPINGS
     fi

     AGENT_BINARY="$NEUTRON_BIN_DIR/neutron-ofagent-agent"
 

     iniset /$Q_PLUGIN_CONF_FILE agent tunnel_types $Q_TUNNEL_TYPES

     # Define extra "AGENT" configuration options when q-agt is configured by defining
     # defining the array ``Q_AGENT_EXTRA_AGENT_OPTS``.
     # For Example: ``Q_AGENT_EXTRA_AGENT_OPTS=(foo=true bar=2)``
     for I in "${Q_AGENT_EXTRA_AGENT_OPTS[@]}"; do
         # Replace the first '=' with ' ' for iniset syntax
         iniset /$Q_PLUGIN_CONF_FILE agent ${I/=/ }
     done
 }
 
 function neutron_plugin_setup_interface_driver {
     local conf_file=$1
     iniset $conf_file DEFAULT interface_driver neutron.agent.linux.interface.OVSInterfaceDriver
     iniset $conf_file DEFAULT ovs_use_veth True
 }
 
 function neutron_plugin_check_adv_test_requirements {
     is_service_enabled q-agt && is_service_enabled q-dhcp && return 0
 }
 
 # Restore xtrace

 $OFA_XTRACE