#!/bin/bash
set -e

LOCAL_IP=${EXABGP_LOCAL_IP:-10.40.40.202}
LOCAL_AS=${EXABGP_LOCAL_AS:-65100}
PEER_AS=${EXABGP_PEER_AS:-65020}
PEER_1=${EXABGP_PEER_1:-10.100.0.100}
PEER_2=${EXABGP_PEER_2:-10.100.0.200}
API_PORT=${EXABGP_API_PORT:-5050}

echo "================================================================"
echo " ExaBGP Route Injector"
echo " Local:  ${LOCAL_IP} AS${LOCAL_AS}"
echo " Peers:  ${PEER_1}, ${PEER_2} (AS${PEER_AS})"
echo " API:    http://0.0.0.0:${API_PORT}"
echo "================================================================"

# Generate ExaBGP 5.x env file — ExaBGP looks here based on pip install prefix
mkdir -p /usr/local/etc/exabgp
exabgp env > /usr/local/etc/exabgp/exabgp.env
sed -i 's/drop = true/drop = false/' /usr/local/etc/exabgp/exabgp.env
sed -i 's/cli = true/cli = false/' /usr/local/etc/exabgp/exabgp.env
sed -i "s/destination = 'stdout'/destination = 'stderr'/" /usr/local/etc/exabgp/exabgp.env

# Generate exabgp.conf from environment
cat > /tmp/exabgp.conf << EOF
process api {
    run /usr/local/bin/python3 /exabgp/api/server.py;
    encoder text;
}

neighbor ${PEER_1} {
    router-id ${LOCAL_IP};
    local-address ${LOCAL_IP};
    local-as ${LOCAL_AS};
    peer-as ${PEER_AS};
    description "CML-R9K-CORE-01";
    hold-time 90;

    family {
        ipv4 unicast;
    }

    api {
        processes [ api ];
    }
}

neighbor ${PEER_2} {
    router-id ${LOCAL_IP};
    local-address ${LOCAL_IP};
    local-as ${LOCAL_AS};
    peer-as ${PEER_AS};
    description "CML-R9K-CORE-02";
    hold-time 90;

    family {
        ipv4 unicast;
    }

    api {
        processes [ api ];
    }
}
EOF

exec exabgp server /tmp/exabgp.conf