#!/bin/bash

# Read configuration files
NEXUS_REPO=$(cat /opt/config/nexus_repo.txt)
ARTIFACTS_VERSION=$(cat /opt/config/artifacts_version.txt)
DNS_IP_ADDR=$(cat /opt/config/dns_ip_addr.txt)
CLOUD_ENV=$(cat /opt/config/cloud_env.txt)
EXTERNAL_DNS=$(cat /opt/config/external_dns.txt)
MAC_ADDR=$(cat /opt/config/mac_addr.txt)

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

if [[ $CLOUD_ENV != "rackspace" ]]
then
	# Add host name to /etc/host to avoid warnings in openstack images
	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
fi

# Set private IP in /etc/network/interfaces manually in the presence of public interface
# Some VM images don't add the private interface automatically, we have to do it during the component installation
if [[ $CLOUD_ENV == "openstack_nofloat" ]]
then
	CIDR=$(cat /opt/config/oam_network_cidr.txt)
	BITMASK=$(echo $CIDR | cut -d"/" -f2)

	# Compute the netmask based on the network cidr
	if [[ $BITMASK == "8" ]]
	then
		NETMASK=255.0.0.0
	elif [[ $BITMASK == "16" ]]
	then
		NETMASK=255.255.0.0
	elif [[ $BITMASK == "24" ]]
	then
		NETMASK=255.255.255.0
	fi

	echo "auto eth1" >> /etc/network/interfaces
	echo "iface eth1 inet static" >> /etc/network/interfaces
	echo "    address $DCAE_IP_ADDR" >> /etc/network/interfaces
	echo "    netmask $NETMASK" >> /etc/network/interfaces
	echo "    mtu $MTU" >> /etc/network/interfaces
	ifup eth1
fi

# Download 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 apt-transport-https ca-certificates wget make openjdk-8-jdk git ntp ntpdate

# Download scripts from Nexus
curl -k $NEXUS_REPO/org.onap.demo/boot/$ARTIFACTS_VERSION/dcae2_vm_init.sh -o /opt/dcae2_vm_init.sh
curl -k $NEXUS_REPO/org.onap.demo/boot/$ARTIFACTS_VERSION/dcae2_serv.sh -o /opt/dcae2_serv.sh
chmod +x /opt/dcae2_vm_init.sh
chmod +x /opt/dcae2_serv.sh
mv /opt/dcae2_serv.sh /etc/init.d
update-rc.d dcae_serv.sh defaults

# Download and install docker-engine and docker-compose
echo "deb https://apt.dockerproject.org/repo ubuntu-xenial main" | sudo tee /etc/apt/sources.list.d/docker.list
apt-get update
apt-get install -y linux-image-extra-$(uname -r) linux-image-extra-virtual
apt-get install -y --allow-unauthenticated docker-engine

mkdir /opt/docker
curl -L https://github.com/docker/compose/releases/download/1.9.0/docker-compose-`uname -s`-`uname -m` > /opt/docker/docker-compose
chmod +x /opt/docker/docker-compose

# Set the MTU size of docker containers to the minimum MTU size supported by vNICs. OpenStack deployments may need to know the external DNS IP
DNS_FLAG=""
if [ -s /opt/config/dns_ip_addr.txt ]
then
	DNS_FLAG=$DNS_FLAG"--dns $(cat /opt/config/dns_ip_addr.txt) "
fi
if [ -s /opt/config/external_dns.txt ]
then
	DNS_FLAG=$DNS_FLAG"--dns $(cat /opt/config/external_dns.txt) "
fi
echo "DOCKER_OPTS=\"$DNS_FLAG--mtu=$MTU\"" >> /etc/default/docker

cp /lib/systemd/system/docker.service /etc/systemd/system
sed -i "/ExecStart/s/$/ --mtu=$MTU/g" /etc/systemd/system/docker.service
service docker restart

# DNS IP address configuration
echo "nameserver "$DNS_IP_ADDR >> /etc/resolvconf/resolv.conf.d/head
resolvconf -u

# Build a configuration file for the DCAE Controller.
chmod 777 /opt/config/priv_key
mkdir /opt/app

UBUNTU_1604_IMAGE=$(cat /opt/config/ubuntu_1604_image.txt)
CENTOS_7_IMAGE=$(cat /opt/config/centos_7_image.txt)
FLAVOR_MEDIUM=$(cat /opt/config/flavor_medium.txt)
SECURITY_GROUP=$(cat /opt/config/security_group.txt)
PUBLIC_NET_ID=$(cat /opt/config/public_net_id.txt)
OPENSTACK_PRIVATE_NETWORK=$(cat /opt/config/openstack_private_network_name.txt)
OPENSTACK_USER=$(cat /opt/config/openstack_user.txt)
OPENSTACK_PASSWORD=$(cat /opt/config/openstack_password.txt)
OPENSTACK_TENANT_ID=$(cat /opt/config/tenant_id.txt)
KEYSTONE_URL=$(cat /opt/config/keystone_url.txt)"/v2.0"
OPENSTACK_REGION=$(cat /opt/config/openstack_region.txt)
OPENSTACK_KEYNAME=$(cat /opt/config/key_name.txt)"_"$(cat /opt/config/rand_str.txt)
ZONE=$(cat /opt/config/dcae_zone.txt)

cat > /opt/app/inputs.yaml << EOF_CONFIG
centos7image_id: '$CENTOS_7_IMAGE'
ubuntu1604image_id: '$UBUNTU_1604_IMAGE'
flavor_id: '$FLAVOR_MEDIUM'
security_group: '$SECURITY_GROUP'
public_net: '$PUBLIC_NET_ID'
private_net: '$OPENSTACK_PRIVATE_NETWORK'
openstack:
 username: '$OPENSTACK_USER'
 password: '$OPENSTACK_PASSWORD'
 tenant_name: '$OPENSTACK_TENANT_ID'
 auth_url: '$KEYSTONE_URL'
 region: '$OPENSTACK_REGION'
keypair: '$OPENSTACK_KEYNAME'
key_filename: '/opt/dcae/key'
location_prefix: '$ZONE'
location_domain: 'onapdevlab.onap.org'
codesource_url: 'https://nexus.onap.org/service/local/repositories/raw/content'
codesource_version: 'org.onap.dcaegen2.deployments/releases/scripts'
EOF_CONFIG

# 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

# Run docker containers
cd /opt
./dcae2_vm_init.sh