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I am performing a call from Salesforce to the DWH. Rarely, I would exceed the 120000 time limit, but when we do, the user would be presented with a default apex error. I would like to capture that and instead present them with a user friendly error. I am not sure how I can capture that event. How can I say if time limit is exceeded then show an error.

Http http = new Http();
HttpRequest request = new HttpRequest();
request.setTimeout(30000);//30000
request.setEndpoint('https://testURL');
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You can use a try-catch block to check for this condition:

try {
  new http().send(req);
  ...
} catch(CalloutException e) {
  ApexPages.addMessage(
    new ApexPages.Message(
      ApexPages.Severity.ERROR,
      'An exception occurred calling the API: '+e.getMessage()
    )
  );
}
|improve this answer|||||
  • Can't you just ApexPages.addMessages(e)? – Adrian Larson Sep 27 '19 at 15:56
  • @AdrianLarson Yeah, I just totally spaced that method. – sfdcfox Sep 27 '19 at 16:33

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