TM RPC fetch peerlist

tmrpc_fetch_peers.sh

#!/bin/bash

# fetch NET_INFO from tendermint RPC and convert it to a comma-seperated peerstring

RPC=${1%/}
if [ -z $RPC ] ; then 
    echo "no RPC endpoint provided!"
    echo "usage: ./$0 <RPC-ENDPOINT>"
    exit 1
fi

if ! JSON_DATA=$(curl -s $RPC/net_info --connect-timeout 5) ; then
    echo "RPC $RPC didn't respond. exiting..."
    exit 1
fi
OUTPUT=""

NODES=$(echo $JSON_DATA | jq '.result.peers[]')

for NODE in $(echo "${NODES}" | jq -r '. | @base64'); do
    _jq() {
        echo ${NODE} | base64 --decode | jq -r ${1}
    }

    NODE_ID=$(_jq '.node_info.id')
    REMOTE_IP=$(_jq '.remote_ip')
    LISTEN_PORT=$(echo $(_jq '.node_info.listen_addr') | cut -d':' -f3)
    
    if [ -z "$OUTPUT" ]; then
        OUTPUT="${NODE_ID}@${REMOTE_IP}:${LISTEN_PORT}"
    else
        OUTPUT="${OUTPUT},${NODE_ID}@${REMOTE_IP}:${LISTEN_PORT}"
    fi
done

echo $OUTPUT