Shell script using jshon to purge the state information of an existing Etcd discovery service.

purge_etcd_discovery.sh

#!/bin/sh
# 
# Usage: ./purge_etcd_discovery.sh <TOKEN>
# 
# needs both `curl` and `jshon` (http://kmkeen.com/jshon/) in order to work.
# 
# (C) 2014 - jawi - licensed under Apache Public License v2.

# check whether our preconditions are met...
curl --version 1>/dev/null 2>&1 || { echo "No curl binary found?!"; exit 1; }
jshon --version 1>/dev/null 2>&1 || { echo "No jshon binary found?!"; exit 1; }

ARG=$1
if [ "$ARG" == "" ]; then
    echo "Usage: $0 <TOKEN>"
    exit 1
fi

baseUrl="https://discovery.etcd.io"
url="$baseUrl/$ARG"

echo "Cleaning discovered nodes for $ARG..."
# Select all "key" values from "node/nodes" and unescape them; then we cut the key-value and remove the /_etcd/registry/ parts
nodes=$(curl -s $url | jshon -Q -e node -e nodes -a -e key -u | cut -d\/ -f4-)
for node in $nodes; do
    echo "Deleting node '$node'..."
    curl -s -XDELETE "$baseUrl/$node"
done
echo "Deleting '_state'..."
curl -s -XDELETE "$url/_state" -o /dev/null

###EOF###