Simple Groovy script working with OpenStack's Keystone and Compute(Nova) APIs.

openstack.groovy

@Grab(group="org.codehaus.groovy.modules.http-builder", module="http-builder", version='0.5.2')

import groovyx.net.http.RESTClient
import groovy.util.slurpersupport.GPathResult
import groovy.json.*

keystone = new RESTClient( 'http://10.0.1.49:5000/v2.0/' )

resp = keystone.post( path : 'tokens',
                      body : [auth:[passwordCredentials:[username: "admin", password:"stack"], tenantId: "2ba2d60c5e8d4d1b86549d988131fe48"]],
                      contentType : 'application/json' )

def token = resp.data.access.token.id

for (endpoint in resp.data.access.serviceCatalog) {
    if (endpoint.type == 'compute' ) {

        compute = new RESTClient(endpoint.endpoints.adminURL[0] + "/")
        
        resp = compute.get( path : 'images',
                            headers : ['X-Auth-Token' : token] )
        
        for (image in resp.data.images) {
            println JsonOutput.toJson(image)
        }
        
        resp = compute.get( path : 'servers',
                            headers : ['X-Auth-Token' : token] )
                            
        for (server in resp.data.servers) {
            println JsonOutput.prettyPrint(JsonOutput.toJson(server))
            details = compute.get ( path : 'servers/' + server.id,
                                 headers : [ 'X-Auth-Token' : token] )
            println details.data
        }                    
        
        //resp = compute.post( path : 'servers',
        //                     contentType : 'application/json',
        //                     body : '''{"server":{"flavorRef":"1",
        //                                          "imageRef":"3012812c-c178-408b-9b54-b292525834c3",
        //                                          "key_name":"opendx_demo",
        //                                         "name":"groovy2"}}''',
        //                     headers : ['X-Auth-Token' : token])
        //println resp.data
    }
}

Hello,

Thanks for sharing this example for people like us who are new to Groovy.

When i try to run the above code, get below error:

Caught: java.lang.NoSuchFieldError: defaultRequestContentType
java.lang.NoSuchFieldError: defaultRequestContentType
	at groovyx.net.http.HTTPBuilder$RequestConfigDelegate.<init>(HTTPBuilder.java:934)
	at groovyx.net.http.HTTPBuilder$RequestConfigDelegate.<init>(HTTPBuilder.java:943)
	at groovyx.net.http.RESTClient.post(RESTClient.java:140)
	at groovyx.net.http.RESTClient$post.call(Unknown Source)
	at OpenStack.run(OpenStack.groovy:13)
	at com.intellij.rt.execution.application.AppMain.main(AppMain.java:147)

Process finished with exit code 1

Could you please suggest