post_to_slack.groovy

@Grab(group='org.codehaus.groovy.modules.http-builder', module='http-builder', version='0.7')
import groovyx.net.http.HTTPBuilder
import groovyx.net.http.HttpResponseException
import static groovyx.net.http.ContentType.*
import groovy.json.JsonBuilder

def post_to_slack = {
  token, text, channel, domain, username, icon_emoji ->
	def site = "https://${domain}.slack.com/"
	println site
	def path = "/services/hooks/incoming-webhook"
	def json_builder = new JsonBuilder()
	def json_object = json_builder channel: channel, username: username, icon_emoji: icon_emoji, text: text
 	def json = json_builder.toString()
	def postData = [payload: json]
	def http = new HTTPBuilder(site)
	try {
	  http.post( path: path, body: postData,
				 query: [token: token],
				 headers: ['Content-Type': 'application/x-www-form-urlencoded']
				 ) { resp ->
				 println "POST Success: ${resp.statusLine}"
		}
	} catch (groovyx.net.http.HttpResponseException e) {
	  r = e.response
	  println("Success: $r.success")
	  println("Status:  $r.status")
	  println("Reason:  $r.statusLine.reasonPhrase")
	  return null
	}
}