nomos-node/testnet/register_node.sh

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#!/bin/sh
# NODE_MASK is set via compose.yml file.
node_key_from_id() {
echo "${NODE_MASK}" | sed "s/.\{${#NODE_ID}\}$/${NODE_ID}/"
}
END=$LIBP2P_REPLICAS
NODE_ID=1
NODE_IP=$(hostname -i)
NODE_KEY=$(node_key_from_id)
register_node() {
## Conditional transaction to set node config key if it doesn't exist.
## Newlines in EOF block are important, more info here:
## https://github.com/etcd-io/etcd/tree/main/etcdctl#examples-3
etcdctl txn <<EOF
mod("/node/${NODE_ID}") = "0"
put /node/${NODE_ID} "${NODE_ID}"
put /config/node/${NODE_ID}/key "${NODE_KEY}"
put /config/node/${NODE_ID}/ip "${NODE_IP}"
EOF
}
while [ "${NODE_ID}" -le "${END}" ]; do
result=$(register_node)
# Check if the key was registered or already exists
if [ "${result}" != "FAILURE" ]; then
break
else
NODE_ID=$((NODE_ID + 1))
NODE_KEY=$(node_key_from_id)
fi
done
if [ "${NODE_ID}" -gt "${END}" ]; then
echo "Reached the limit without registering a ${NODE_ID}."
return 1
fi
echo "${NODE_KEY}"