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Start an Activiti Process via Rest Script

This cook book is designed to provide the most straight forward example of a CrafterCMS REST service being used to start an Activiti Process.

Prerequisites

  • You have Activiti (http://www.activiti.org/) installed

    • The authentication and process are hard coded to simplify the example

Step 1: Create a REST Controller

  • Under Scripts/rest right click and click create controller

    • Enter start-process.get as the controller name

  • Add the following code to the controller. This code assumes Activiti is deployed in to the same container as engine.

@Grab('org.codehaus.groovy.modules.http-builder:http-builder:0.7')
@Grab('oauth.signpost:signpost-core:1.2.1.2')
@Grab('oauth.signpost:signpost-commonshttp4:1.2.1.2')


import groovyx.net.http.HTTPBuilder
import groovyx.net.http.ContentType
import groovyx.net.http.Method
import groovyx.net.http.RESTClient

def http = new HTTPBuilder("http://localhost:8080")
def user = "kermit"
def password = "kermit"
def authPair = user + ":" + password
def authEncoded = authPair.bytes.encodeBase64().toString()

http.setHeaders([Authorization: "Basic "+authEncoded])

def ret = null

http.request( Method.POST ) {
    uri.path = "/activiti-rest/service/runtime/process-instances"
    // ACTIVITI ENTERPRISE URL
    // uri.path = "/activiti-app/api/enterprise/process-instances"

    requestContentType = ContentType.JSON
    body =  [ processDefinitionKey: "vacationRequest", variables:[  [name:"employeeName", value: "Russ"], [name:"numberOfDays", value: "5"],[name:"startDate", value:"10-08-2015 11:11"],[name:"vacationMotivation", value: "rest"]    ]]

    response.success = { resp, reader ->
        ret = reader
    }
}

return ret

Step 2: Execute the Service

Step 3: Verify that a new process instance has been started