#!/bin/bash

REPO_URL_BLOB=$(cat /opt/config/repo_url_blob.txt)
REPO_URL_ARTIFACTS=$(cat /opt/config/repo_url_artifacts.txt)
DEMO_ARTIFACTS_VERSION=$(cat /opt/config/demo_artifacts_version.txt)
INSTALL_SCRIPT_VERSION=$(cat /opt/config/install_script_version.txt)
VPP_SOURCE_REPO_URL=$(cat /opt/config/vpp_source_repo_url.txt)
VPP_SOURCE_REPO_BRANCH=$(cat /opt/config/vpp_source_repo_branch.txt)
VPP_PATCH_URL=$(cat /opt/config/vpp_patch_url.txt)
HC2VPP_SOURCE_REPO_URL=$(cat /opt/config/hc2vpp_source_repo_url.txt)
HC2VPP_SOURCE_REPO_BRANCH=$(cat /opt/config/hc2vpp_source_repo_branch.txt)
HC2VPP_PATCH_URL=$(cat /opt/config/hc2vpp_patch_url.txt)
CLOUD_ENV=$(cat /opt/config/cloud_env.txt)

# Convert Network CIDR to Netmask
cdr2mask () {
	# Number of args to shift, 255..255, first non-255 byte, zeroes
	set -- $(( 5 - ($1 / 8) )) 255 255 255 255 $(( (255 << (8 - ($1 % 8))) & 255 )) 0 0 0
	[ $1 -gt 1 ] && shift $1 || shift
	echo ${1-0}.${2-0}.${3-0}.${4-0}
}

# OpenStack network configuration
if [[ $CLOUD_ENV == "openstack" ]]
then
	echo 127.0.0.1 $(hostname) >> /etc/hosts

	# Allow remote login as root
	mv /root/.ssh/authorized_keys /root/.ssh/authorized_keys.bk
	cp /home/ubuntu/.ssh/authorized_keys /root/.ssh

	MTU=$(/sbin/ifconfig | grep MTU | sed 's/.*MTU://' | sed 's/ .*//' | sort -n | head -1)

	IP=$(cat /opt/config/bng_mux_net_ipaddr.txt)
	BITS=$(cat /opt/config/bng_mux_net_cidr.txt | cut -d"/" -f2)
	NETMASK=$(cdr2mask $BITS)
	echo "auto eth1" >> /etc/network/interfaces
	echo "iface eth1 inet static" >> /etc/network/interfaces
	echo "    address $IP" >> /etc/network/interfaces
	echo "    netmask $NETMASK" >> /etc/network/interfaces
	echo "    mtu $MTU" >> /etc/network/interfaces

	IP=$(cat /opt/config/oam_ipaddr.txt)
	BITS=$(cat /opt/config/oam_cidr.txt | cut -d"/" -f2)
	NETMASK=$(cdr2mask $BITS)
	echo "auto eth2" >> /etc/network/interfaces
	echo "iface eth2 inet static" >> /etc/network/interfaces
	echo "    address $IP" >> /etc/network/interfaces
	echo "    netmask $NETMASK" >> /etc/network/interfaces
	echo "    mtu $MTU" >> /etc/network/interfaces

	IP=$(cat /opt/config/mux_gw_net_ipaddr.txt)
	BITS=$(cat /opt/config/mux_gw_net_cidr.txt | cut -d"/" -f2)
	NETMASK=$(cdr2mask $BITS)
	echo "auto eth3" >> /etc/network/interfaces
	echo "iface eth3 inet static" >> /etc/network/interfaces
	echo "    address $IP" >> /etc/network/interfaces
	echo "    netmask $NETMASK" >> /etc/network/interfaces
	echo "    mtu $MTU" >> /etc/network/interfaces

	ifup eth1
	ifup eth2
	ifup eth3
fi

# Download required dependencies
echo "deb http://ppa.launchpad.net/openjdk-r/ppa/ubuntu $(lsb_release -c -s) main" >>  /etc/apt/sources.list.d/java.list
echo "deb-src http://ppa.launchpad.net/openjdk-r/ppa/ubuntu $(lsb_release -c -s) main" >>  /etc/apt/sources.list.d/java.list
apt-get update
apt-get install --allow-unauthenticated -y wget openjdk-8-jdk apt-transport-https ca-certificates g++ libcurl4-gnutls-dev
sleep 1

# Install the tools required for download codes
apt-get install -y expect git patch make

#Download and build the VPP codes
cd /opt
git clone ${VPP_SOURCE_REPO_URL} -b ${VPP_SOURCE_REPO_BRANCH} vpp
wget -O Vpp-Add-VES-agent-for-vG-MUX.patch ${VPP_PATCH_URL} 

cd vpp
patch -p1 < ../Vpp-Add-VES-agent-for-vG-MUX.patch
expect -c "
        spawn make install-dep;
        expect {
                \"Do you want to continue?*\" {send \"Y\r\"; interact}
        }
"

# Install the evel-library first since we need the lib
cd /opt
apt-get install -y libcurl4-openssl-dev
git clone http://gerrit.onap.org/r/demo
cd demo/vnfs/VES5.0/evel/evel-library/bldjobs 
make
cp ../libs/x86_64/libevel.so /usr/lib
ldconfig

cd /opt/vpp/build-root
./bootstrap.sh
make V=0 PLATFORM=vpp TAG=vpp install-deb

# Install the VPP package
apt install -y python-ply-lex-3.5 python-ply-yacc-3.5 python-pycparser python-cffi
dpkg -i *.deb
systemctl stop vpp

# Auto-start configuration for the VPP
cat > /etc/vpp/startup.conf << EOF

unix {
  nodaemon
  log /tmp/vpp.log
  full-coredump
  cli-listen localhost:5002
  startup-config /etc/vpp/setup.gate
}

api-trace {
  on
}

api-segment {
  gid vpp
}

cpu {
	## In the VPP there is one main thread and optionally the user can create worker(s)
	## The main thread and worker thread(s) can be pinned to CPU core(s) manually or automatically

	## Manual pinning of thread(s) to CPU core(s)

	## Set logical CPU core where main thread runs
	# main-core 1

	## Set logical CPU core(s) where worker threads are running
	# corelist-workers 2-3,18-19

	## Automatic pinning of thread(s) to CPU core(s)

	## Sets number of CPU core(s) to be skipped (1 ... N-1)
	## Skipped CPU core(s) are not used for pinning main thread and working thread(s).
	## The main thread is automatically pinned to the first available CPU core and worker(s)
	## are pinned to next free CPU core(s) after core assigned to main thread
	# skip-cores 4

	## Specify a number of workers to be created
	## Workers are pinned to N consecutive CPU cores while skipping "skip-cores" CPU core(s)
	## and main thread's CPU core
	# workers 2

	## Set scheduling policy and priority of main and worker threads

	## Scheduling policy options are: other (SCHED_OTHER), batch (SCHED_BATCH)
	## idle (SCHED_IDLE), fifo (SCHED_FIFO), rr (SCHED_RR)
	# scheduler-policy fifo

	## Scheduling priority is used only for "real-time policies (fifo and rr),
	## and has to be in the range of priorities supported for a particular policy
	# scheduler-priority 50
}

# dpdk {
	## Change default settings for all intefaces
	# dev default {
		## Number of receive queues, enables RSS
		## Default is 1
		# num-rx-queues 3

		## Number of transmit queues, Default is equal
		## to number of worker threads or 1 if no workers treads
		# num-tx-queues 3

		## Number of descriptors in transmit and receive rings
		## increasing or reducing number can impact performance
		## Default is 1024 for both rx and tx
		# num-rx-desc 512
		# num-tx-desc 512

		## VLAN strip offload mode for interface
		## Default is off
		# vlan-strip-offload on
	# }

	## Whitelist specific interface by specifying PCI address
	# dev 0000:02:00.0

	## Whitelist specific interface by specifying PCI address and in
	## addition specify custom parameters for this interface
	# dev 0000:02:00.1 {
	#	num-rx-queues 2
	# }

	## Change UIO driver used by VPP, Options are: igb_uio, vfio-pci
	## and uio_pci_generic (default)
	# uio-driver vfio-pci

	## Disable mutli-segment buffers, improves performance but
	## disables Jumbo MTU support
	# no-multi-seg

	## Increase number of buffers allocated, needed only in scenarios with
	## large number of interfaces and worker threads. Value is per CPU socket.
	## Default is 16384
	# num-mbufs 128000

	## Change hugepages allocation per-socket, needed only if there is need for
	## larger number of mbufs. Default is 256M on each detected CPU socket
	# socket-mem 2048,2048
# }

EOF

cat > /etc/vpp/setup.gate << EOF
set int state GigabitEthernet0/8/0 up
set int ip address GigabitEthernet0/8/0 10.1.0.20/24

set int state GigabitEthernet0/9/0 up
set int ip address GigabitEthernet0/9/0 10.5.0.20/24

create vxlan tunnel src 10.5.0.20 dst 10.5.0.21 vni 100
EOF

# Download and install HC2VPP from source
cd /opt
git clone ${HC2VPP_SOURCE_REPO_URL} -b ${HC2VPP_SOURCE_REPO_BRANCH} hc2vpp
wget -O Hc2vpp-Add-VES-agent-for-vG-MUX.patch ${HC2VPP_PATCH_URL}

apt-get install -y maven
mkdir -p ~/.m2
cat > ~/.m2/settings.xml << EOF
<?xml version="1.0" encoding="UTF-8"?>
<!-- vi: set et smarttab sw=2 tabstop=2: -->
<settings xmlns="http://maven.apache.org/SETTINGS/1.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/SETTINGS/1.0.0 http://maven.apache.org/xsd/settings-1.0.0.xsd">

  <profiles>
    <profile>
      <id>fd.io-release</id>
      <repositories>
        <repository>
          <id>fd.io-mirror</id>
          <name>fd.io-mirror</name>
          <url>https://nexus.fd.io/content/groups/public/</url>
          <releases>
            <enabled>true</enabled>
            <updatePolicy>never</updatePolicy>
          </releases>
          <snapshots>
            <enabled>false</enabled>
          </snapshots>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>fd.io-mirror</id>
          <name>fd.io-mirror</name>
          <url>https://nexus.fd.io/content/repositories/public/</url>
          <releases>
            <enabled>true</enabled>
            <updatePolicy>never</updatePolicy>
          </releases>
          <snapshots>
            <enabled>false</enabled>
          </snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>

    <profile>
      <id>fd.io-snapshots</id>
      <repositories>
        <repository>
          <id>fd.io-snapshot</id>
          <name>fd.io-snapshot</name>
          <url>https://nexus.fd.io/content/repositories/fd.io.snapshot/</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>fd.io-snapshot</id>
          <name>fd.io-snapshot</name>
          <url>https://nexus.fd.io/content/repositories/fd.io.snapshot/</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
    <profile>
      <id>opendaylight-snapshots</id>
      <repositories>
        <repository>
          <id>opendaylight-snapshot</id>
          <name>opendaylight-snapshot</name>
          <url>https://nexus.opendaylight.org/content/repositories/opendaylight.snapshot/</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </repository>
      </repositories>
      <pluginRepositories>
        <pluginRepository>
          <id>opendaylight-shapshot</id>
          <name>opendaylight-snapshot</name>
          <url>https://nexus.opendaylight.org/content/repositories/opendaylight.snapshot/</url>
          <releases>
            <enabled>false</enabled>
          </releases>
          <snapshots>
            <enabled>true</enabled>
          </snapshots>
        </pluginRepository>
      </pluginRepositories>
    </profile>
  </profiles>

  <activeProfiles>
    <activeProfile>fd.io-release</activeProfile>
    <activeProfile>fd.io-snapshots</activeProfile>
    <activeProfile>opendaylight-snapshots</activeProfile>
  </activeProfiles>
</settings>
EOF

cd hc2vpp
patch -p1 < ../Hc2vpp-Add-VES-agent-for-vG-MUX.patch
mvn clean install
l_version=$(cat pom.xml | grep "<version>" | head -1)
l_version=$(echo "${l_version%<*}")
l_version=$(echo "${l_version#*>}")
mv vpp-integration/minimal-distribution/target/vpp-integration-distribution-${l_version}-hc/vpp-integration-distribution-${l_version} /opt/honeycomb
sed -i 's/127.0.0.1/0.0.0.0/g' /opt/honeycomb/config/honeycomb.json

# Create systemctl service for Honeycomb
cat > /etc/systemd/system/honeycomb.service << EOF
[Unit]
Description=Honeycomb Agent for the VPP control plane
Documentation=https://wiki.fd.io/view/Honeycomb
Requires=vpp.service
After=vpp.service

[Service]
ExecStart=/opt/honeycomb/honeycomb
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF
systemctl enable /etc/systemd/system/honeycomb.service

#Create a systemd service for auto-save
cat > /usr/bin/save_config << EOF
#!/bin/bash

#########################################################################
#
#  Copyright (c) 2017 Intel and/or its affiliates.
# 
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at:
# 
#      http://www.apache.org/licenses/LICENSE-2.0
# 
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#
##########################################################################

############################### Variables ################################
VPP_SETUP_GATE=/etc/vpp/setup.gate

############################### Functions ################################

# Write the commands to the startup scripts.
#
# We could set VPP configuration to the startup.conf.
# Write the configuration to the startup scripts so we could
# restore the system after rebooting.
#
write_startup_scripts()
{
	local cmd=${2}
	local is_add=${1}

	if [[ ${is_add} == add ]] ;then
		while read -r line
		do
			if [[ ${line} == ${cmd} ]] ;then
				return 0
			fi
		done < ${VPP_SETUP_GATE}

		echo "${cmd}" >> ${VPP_SETUP_GATE}
	else
		while read -r line
		do
			if [[ ${line} == ${cmd} ]] ;then
				sed -i "/${line}/d" ${VPP_SETUP_GATE}
				return 0
			fi
		done < ${VPP_SETUP_GATE}
	fi
}

# Saves the VES agent configuration to the startup script.
#
# Get the current VES agent configuration from the bash command:
# $vppctl show ves agent
#    Server Addr    Server Port Interval Enabled
#    127.0.0.1        8080         10    True
# Set the VES agent configuration with the bash command:
# $vppctl set ves agent server 127.0.0.1 port 8080 intval 10
#
save_ves_config()
{
	local server=""
	local port=""
	local intval=""

	local ves_config=`vppctl show ves agent | head -2 | tail -1`
	if [ "${ves_config}" != "" ] ;then
		server=`echo ${ves_config} | awk '{ print $1 }'`
		port=`echo ${ves_config} | awk '{ print $2 }'`
		intval=`echo ${ves_config} | awk '{ print $3 }'`
		write_startup_scripts add "set ves agent server ${server} port ${port} intval ${intval}"
	fi
}

# Save the VxLAN Tunnel Configuration to the startup script.
#
# Get the current VxLAN tunnel configuration with bash command:
# $vppctl show vxlan tunnel
#  [0] src 10.3.0.2 dst 10.1.0.20 vni 100 sw_if_index 1 encap_fib_index 0 fib_entry_index 7 decap_next l2
#  [1] src 10.5.0.20 dst 10.5.0.21 vni 100 sw_if_index 2 encap_fib_index 0 fib_entry_index 8 decap_next l2
# Set the VxLAN Tunnel with the bash command:
# $vppctl create vxlan tunnel src 10.3.0.2 dst 10.1.0.20 vni 100
# vxlan_tunnel0
save_vxlan_tunnel()
{
	local src=""
	local dst=""
	local vni=""

	vppctl show vxlan tunnel | while read line
	do
		if [ "${line}" != "" ] ;then
			src=`echo ${line} | awk '{ print $3 }'`
			dst=`echo ${line} | awk '{ print $5 }'`
			vni=`echo ${line} | awk '{ print $7 }'`

			write_startup_scripts add "create vxlan tunnel src ${src} dst ${dst} vni ${vni}"
		fi
	done
}

# Save the VxLAN tunnel L2 xconnect configuration to the startup script.
#
# Get the Current L2 Address configuration with bash command:
# $vppctl show int addr
# local0 (dn):
# vxlan_tunnel0 (up):
#   l2 xconnect vxlan_tunnel1
# vxlan_tunnel1 (up):
#   l2 xconnect vxlan_tunnel0
# Save the VxLAN tunnel L2 xconnect configuration with bash command:
# $vppctl set interface l2 xconnect vxlan_tunnel0 vxlan_tunnel1
#
save_vxlan_xconnect()
{
	local ingress=""
	local egress=""

	vppctl show int addr | while read line
	do
		if [[ ${line} == vxlan_tunnel* ]] ;then
			read next
			while [[ ${next} != l2* ]] || [[ ${next} == "" ]]
			do
				line=`echo ${next}`
				read next
			done
			if [[ ${next} == l2* ]] ;then
				ingress=`echo ${line} | awk '{ print $1 }'`
				egress=`echo ${next} | awk '{ print $3 }'`
				write_startup_scripts add "set interface l2 xconnect ${ingress} ${egress}"
			fi
		fi
	done
}

################################# MAIN ###################################

save_ves_config

save_vxlan_tunnel

save_vxlan_xconnect

EOF
chmod a+x /usr/bin/save_config
cat > /etc/systemd/system/autosave.service << EOF
[Unit]
Description=Run Scripts at Start and Stop
Requires=vpp.service
After=vpp.service

[Service]
Type=oneshot
RemainAfterExit=true
ExecStop=/usr/bin/save_config

[Install]
WantedBy=multi-user.target
EOF
systemctl enable /etc/systemd/system/autosave.service

# Download DHCP config files
cd /opt
wget $REPO_URL_BLOB/org.onap.demo/vnfs/vcpe/$INSTALL_SCRIPT_VERSION/v_gmux_init.sh
wget $REPO_URL_BLOB/org.onap.demo/vnfs/vcpe/$INSTALL_SCRIPT_VERSION/v_gmux.sh
chmod +x v_gmux_init.sh
chmod +x v_gmux.sh
mv v_gmux.sh /etc/init.d
update-rc.d v_gmux.sh defaults

# Rename network interface in openstack Ubuntu 16.04 images. Then, reboot the VM to pick up changes
if [[ $CLOUD_ENV != "rackspace" ]]
then
	sed -i "s/GRUB_CMDLINE_LINUX=.*/GRUB_CMDLINE_LINUX=\"net.ifnames=0 biosdevname=0\"/g" /etc/default/grub
	grub-mkconfig -o /boot/grub/grub.cfg
	sed -i "s/ens[0-9]*/eth0/g" /etc/network/interfaces.d/*.cfg
	sed -i "s/ens[0-9]*/eth0/g" /etc/udev/rules.d/70-persistent-net.rules
	echo 'network: {config: disabled}' >> /etc/cloud/cloud.cfg.d/99-disable-network-config.cfg
	echo "APT::Periodic::Unattended-Upgrade \"0\";" >> /etc/apt/apt.conf.d/10periodic
	reboot
fi

./v_gmux_init.sh