I have trigger on custom object and i need to make callout (Post) from trigger whenever status field change to completed I know i can do this using @future in trigger but my requirement is if response is not success then again i needs make callout this process should go for three attempt then need to send email to group that three unsuccessful attempt completed. Is there any way/possible to do this ?

        HttpResponse res = http.send(req);
        if(res.getStatusCode() == 200)

        system.debug('Not success');
        //I am thinking to add callout here then again check for success and fail and do same          


closed as unclear what you're asking by Pranay Jaiswal, glls, Reshma, Vijay Ganji, Oleksandr Berehovskyi Jul 17 at 18:44

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  • 4
    What have you tried? Where are you stuck? – David Reed Jul 16 at 1:49
  • @DavidReed : Added some code from my trigger handler but not sure if this will work or not all this code get executed inside future – Sfdc_1184 Jul 16 at 2:15
  • 1
    I didn't understand 3 times because if a status code is a failure maybe there is an issue in your request. I mean if it is a failure with specific status code even you tried 100 times still it is a failure. – Pavan tej Jul 16 at 13:59

You can use queueable apex. If the callout fails then chain the same job by using system.enqueueJob method.

Below is the way how you can do a callout from queuable apex, you have to implement Database.AllowCallouts interface.

public class myClass implements Queueable, Database.AllowsCallouts
  public void execute(QueueableContext context) {
      //your callout code here
     System.enqueueJob(this); // this will queue your job again! - Be aware of the governor limts for queueable apex. You can use limits class to check the same

  • I used Queueable but never used for callout can you provide some more detail how this scenario will be achieved by queueable – Sfdc_1184 Jul 16 at 2:19
  • @Sfdc_1184 I have provided the details in my above comment. – San Jul 16 at 13:48
  • 1
    ``System.enqueueJob(this);` is bad architecture, it can span infinitely spanning queuable in case the 3rd party service goes down – Pranay Jaiswal Jul 16 at 14:25
  • You can add a counter to the Queueable that increments with each attempt, and quits after some reasonable number (e.g. 3-5) – Charles T Jul 16 at 22:55

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