Skip to main content

Invoking Apex Callout From Process Builder

Process builder is GA in Spring 15 and one of the queries I came across was around how to invoke apex callouts from Process builder .

Before process builder came we had two common approaches of calling webservice 

1)We have outbound messages as one of the Actions for workflows.This works if other party implements the WSDL that is generated once Outbound messaging is defined with appropriate end point .

2)Most of times future method invoked through triggers allowed to do apex callouts and invoke external web service provided the future method is annotated with @future(callout=true).This provides lot of flexibility and one of the best approaches .

3)Flow triggers was in BETA and this was also one of the ways we could invoke callouts provided the Flow implements process plugin .To understand in detail how to implement process plugin refer to the below example

The purpose of this blogpost is to demonstrate the new possibility of invoking apex callout through Process Builder 

I tried initially to make this callout synchronous and invoke apex callout directly inside @InvocableMethod and received uncommitted pending DML issue and I have no solution for this and may be an Idea post to salesforce to allow this .

My approach included below steps 

1)Invoke apex through process builder using @InvocableMethod

2)Use Future method inside @InvocableMethod and invoke apex callout 

Creating Process Builder Flow

1)Navigate to Process Builder 


2)Specify the Object and when to start the process setting


3)Define Criteria for our action defined

4)Define the action ,here our action comprise of calling the Apex method annotated with @InvocableMethod

The input variable of apex method needs to map to related record ,here it maps to Account object .

Below is the code for the MakeApexCallout class ,Future class and also the JSON parser weather info class

For callout for this example I have used a sample REST API from that is available for free

The response is JSON which returns the Zipcode also and we stamp Zipcode returned from the response on the Account record .

A small video demonstrating this is as below

I am quite surprised that even though it happens in future but after the page refreshes the value is found stamped on the record (Almost given us feel to naked eye that it happened synchronously )

I hope you enjoyed this post and any queries or solution please let me know .

Popular posts from this blog

Writing Test Classes For Apex Rest Service

I came across a question in a developer community on how to write Unit Test Classes for the Rest API service for POST HTTP calls

Unit Test Classes for REST API following link is very useful and inspired by this jeff had an article on his blog on how to write the test method for same .

Here is the Jeff Blog Link Test Class for REST API(Good reference for GET Rest Services)

In one of my previous blog post i demonstrated how to use native parsing technique for Rest api for User Defined Type
I wrote the Test class for the same and this post is helpful for all those searching for how to write test classes for apex rest service annotated with POST Call
Here is the Rest Service Class for which i attempted the test class
@RestResource(urlMapping='/DemoUrl/*') global with sharing class MyRestResourcedemo { global class RequestWrapper{ public Account acct; public Contact[] cons; } global class ResponseWrapper { public String StatusCode; …

Opening Modal Using Lightning Component Framework of SFDC

One of my friend from India threw a challenge .The challenge was to open a modal by using latest and greatest lightning components framework and modals design from SLDS .For the love of community I thought of sharing the entire code base that I did .

So here we start ..

Business Use Case - Need a handy SalesLeader board component that can be used to display the Sales revenue generated by each sales rep for current year in the order of decreasing total revenue .On click of the tile ,we will show detail opportunity list aggregating the revenue .

The component can be dragged in lightning design experience or in App builder lightning Page .

Video Demonstration-

SalesLeaderBoard from Mohith Kumar Shrivastava on Vimeo.

Frameworks Used -
Lightning Design Systems (SLDS) for CSSLightning Component Framework for client side logicApex aura enabled class for backend logicApproach
The component hierarchy is very important to imagine or mindmap before we dig deeper- SalesLeaderMain