topologyUpdater.sh

#!/bin/bash
# shellcheck disable=SC2086,SC2034

CNODE_PORT=3010  # must match your relay node port as set in the startup command
CNODE_HOSTNAME="CHANGE ME"  # optional. must resolve to the IP you are requesting from
CNODE_VALENCY=1   # optional for multi-IP hostnames

CNODE_HOME="/opt/cardano/testnet"
CNODE_LOG_DIR="${CNODE_HOME}/logs/"

CONFIG="$CNODE_HOME/files/config.json"
GENESIS_JSON="${CNODE_HOME}/files/testnet-shelley-genesis.json"

###########################################

EKGPORT=$(jq -r .hasEKG $CONFIG)
NWMAGIC=$(jq -r .networkMagic < $GENESIS_JSON)

metrics=$(curl -s -H 'Accept: application/json' http://127.0.0.1:${EKGPORT}/ )
blockNo=$(echo "${metrics}" | jq -r .cardano.node.ChainDB.metrics.blockNum.int.val)

# Note: 
# if you run your node in IPv4/IPv6 dual stack network configuration and want announced the 
# IPv4 address only please add the -4 parameter to the curl command below  (curl -4 -s ...)
if [ "${CNODE_HOSTNAME}" != "CHANGE ME" ]; then
  T_HOSTNAME="&hostname=${CNODE_HOSTNAME}"
else
  T_HOSTNAME=''
fi

curl -s "https://api.clio.one/htopology/v1/?port=${CNODE_PORT}&blockNo=${blockNo}&valency=${CNODE_VALENCY}&magic=${NWMAGIC}${T_HOSTNAME}" | tee -a $CNODE_LOG_DIR/topologyUpdater_lastresult.json