#!/bin/bash -e
#
#  Copyright (C) 2015 ScyllaDB

. /usr/lib/scylla/scylla_lib.sh

print_usage() {
    echo "scylla-sysconfig-setup --nic eth0 --mode posix --nr-hugepages 64 --user scylla --group scylla --homedir /var/lib/scylla --confdir /etc/scylla --setup-nic"
    echo "  --nic  specify NIC"
    echo "  --mode  network mode (posix, dpdk)"
    echo "  --nr-hugepages  number of hugepages"
    echo "  --user  user (dpdk requires root)"
    echo "  --group  group (dpdk requires root)"
    echo "  --homedir  scylla home directory"
    echo "  --confdir  scylla config directory"
    echo "  --setup-nic  setup NIC's interrupts, RPS, XPS"
    echo "  --ami  AMI instance mode"
    exit 1
}

if [ $# -eq 0 ]; then
    print_usage
fi
while [ $# -gt 0 ]; do
    case "$1" in
        "--nic")
            NIC="$2"
            shift 2
            ;;
        "--mode")
            NETWORK_MODE="$2"
            shift 2
            ;;
        "--nr-hugepages")
            NR_HUGEPAGES="$2"
            shift 2
            ;;
        "--user")
            USER="$2"
            shift 2
            ;;
        "--group")
            GROUP="$2"
            shift 2
            ;;
        "--homedir")
            SCYLLA_HOME="$2"
            shift 2
            ;;
        "--confdir")
            SCYLLA_CONF="$2"
            shift 2
            ;;
        "--setup-nic")
            SET_NIC=yes
            shift 1
            ;;
        "--ami")
            AMI=yes
            shift 1
            ;;
        *)
            print_usage
            ;;
    esac
done

echo Setting parameters on $SYSCONFIG/scylla-server

if [ $SET_NIC = "yes" ]; then
   RPS_CPUS=$(/usr/lib/scylla/posix_net_conf.sh --cpu-mask $NIC)
   if [ "$RPS_CPUS" != "" ]; then
       CPUSET=$(echo $RPS_CPUS | /usr/lib/scylla/hex2list.py)
       /usr/lib/scylla/scylla_cpuset_setup --cpuset $CPUSET
   fi
fi

if [ "$NETWORK_MODE" == "dpdk" ]; then
    ETHDRV=`/usr/lib/scylla/dpdk-devbind.py --status | grep if=$NIC | sed -e "s/^.*drv=//" -e "s/ .*$//"`
    ETHPCIID=`/usr/lib/scylla/dpdk-devbind.py --status | grep if=$NIC | awk '{print $1}'`
else
    # this will empty previous values
    ETHDRV=""
    ETHPCIID=""
fi
sed -e s#^NETWORK_MODE=.*#NETWORK_MODE=$NETWORK_MODE# \
    -e s#^IFNAME=.*#IFNAME=$NIC# \
    -e s#^ETHDRV=.*#ETHDRV=$ETHDRV# \
    -e s#^ETHPCIID=.*#ETHPCIID=$ETHPCIID# \
    -e s#^NR_HUGEPAGES=.*#NR_HUGEPAGES=$NR_HUGEPAGES# \
    -e s#^USER=.*#USER=$USER# \
    -e s#^GROUP=.*#GROUP=$GROUP# \
    -e s#^SCYLLA_HOME=.*#SCYLLA_HOME=$SCYLLA_HOME# \
    -e s#^SCYLLA_CONF=.*#SCYLLA_CONF=$SCYLLA_CONF# \
    -e s#^SET_NIC=.*#SET_NIC=$SET_NIC# \
    -e "s#^SCYLLA_ARGS=.*#SCYLLA_ARGS=\"$SCYLLA_ARGS\"#" \
    -e s#^AMI=.*#AMI=$AMI# \
    $SYSCONFIG/scylla-server > /tmp/scylla-server
mv /tmp/scylla-server $SYSCONFIG/scylla-server