SalesForce to VictorOps API Integration

public class VOTimeLinePOSTClass{
    
    // Create boolean to be used in test class

    public static boolean isApexTest = false;

    // Create boolean that differentiates between Opening and Closing a case

    public static boolean caseIsClosed = true;
 
 @future(callout=true)

    //Set string of variables you want to appear in VictorOps Timeline

     public static void caseToVictorTimeLine(boolean isRecovery, LIST THE REST OF THE VARIABLES YOU WISH TO USE){
        
        //Customize what you want to appear in the MSG in VictorOps Timeline

        //For example this will read "New SalesForce Case from: 'Name or Email', Case Subject: 'Case Reason or Email Subject' "

         String AtMessage='from: ';
         String IssueMessage=', Case Subject: ';
         String critical='critical';
         String recovery='recovery';
         String message='New SalesForce Case '+AtMessage + ifnull(name,email) + IssueMessage + ifnull(reason,subject);

//Set up HttpRequest
         
 HttpRequest req = new HttpRequest();
 Http http = new Http();

 //Set Http Endoint - Make sure to include your Org's API Key and the correct Routing Key
         
 req.setEndpoint('http://alert.victorops.com/integrations/generic/20131114/alert/API KEY GOES IN HERE/ROUTING KEY GOES IN HERE');

//Set request method to 'POST'

 req.setMethod('POST');

 //Map out the strings note that message_type is requried and Entity ID should be unique for incident 

 Map<String, String> data = new Map<String, String>();
 data.put('message_type', ifRecover(isRecovery, recovery,critical));
 data.put('entity_id', casenumber);
 data.put('entity_display_name', 'SalesForce Case Number: ' +casenumber);
 data.put('monitoring_tool', 'SalesForce');
 data.put('state_message', message);

//
    
 String body = JSON.serialize(data);
 System.debug(body);
 req.setBody(body);
 req.setHeader('Content-Type','application/json');
 
 // Create a new http object to send the request object 
 
 // A response object is generated as a result of the request   
 
         
         if (!isApexTest){
 HTTPResponse res = http.send(req);
 System.debug(res.getBody());
  }
     }

     //Use the following to return the users Name if it is provided if not default to their Email
 
    private static String ifnull(String maybeValue, String defaultValue) {
        if(maybeValue != null) {
           return maybeValue;
         } else {
             return defaultValue;
         }
                   
    }

    //Use the following to to set up different triggers that fire depending on the case being opened or closed. 

     private static String ifRecover(boolean isRecovery, String recovery, string critical){
         if (isRecovery){
             return recovery;
         } else{
             return critical;
         }
     }  
}