Groovy script to copy settings and mappings from one elasticsearch cluster to another

indices.groovy

#!/usr/bin/env groovy

import groovy.json.*

/*
 * usage:
 * 
 * cd `mktemp -d`
 * 
 * curl -s -XGET 'http://localhost:9200/_cluster/state?pretty=true&filter_nodes=true&filter_routing_table=true&filter_blocks=true' \
 *   | indices.groovy
 * for index in *; do
 *   curl -XDELETE "http://localhost:9200/${index}"
 *   curl -XPUT "http://localhost:9200/${index}" -d @create-index-${index}.json
 * done
 * 
 * TODO move curl invocations into script
 */

def state = new JsonSlurper().parseText(System.in.text)
state.metadata.indices.each { name, data ->
	data.keySet().retainAll(["mappings", "settings"])

	def output = new JsonBuilder(data).toPrettyString()

	new File(name).write(output)
	println "wrote ${name}"
}