SOASTA JavaScript Snippets

SOASTAJavaScript.js

// ------------------------------------------------------------------------------------------------------
// find previous message
// ------------------------------------------------------------------------------------------------------

function findPriorMessage() {
    var priorMessage = $context.currentItem.previousItem;

    for (;;) {
		
	  if ( priorMessage  == null ) {
		throw "No Prior Message";
      }
		
	  if ( priorMessage.type == "Message") {
		  break;
	  }
      
	  priorMessage = priorMessage.previousItem;

    }

	return priorMessage;
}


// Create property on the fly

var mylib = $context.currentClip;

// at least one property should be created on the clip manually 
// else it throws error
var plist = $context.currentClip.propertyList;

// Setup properties
if ( plist.propertyNames.indexOf("XDATE") != -1 ) {
    // property exists, do nothing
} else {
    plist.createProperty("XDATE"); // create the property
}


// adding javascript functions into current clip context

function getSig() { // }
var addMethods = $context.currentClip;
addMethods.getSig = getSig;

// ------------------------------------------------------------------------------------------------------
// Set a Cookie
// ------------------------------------------------------------------------------------------------------

// Getting all the clip Targets
var targets = $context.currentClip.targets;

// Proceed if some targets exist in the clip
if (targets != null)
{
  // Loop through all targets    
  for (var i=0; i<targets.length; i++) {
    // Extract HostName
    var hostName = targets[i].systemPropertyList.getPropertyValue("HostName");
    var vURL = targets[i].systemPropertyList.getPropertyValue("URL");
    if (hostName == "10.65.87.101") {
        $context.result.postMessage($context.result.LEVEL_INFO, "Host Name:  " + hostName);
        $context.result.postMessage($context.result.LEVEL_INFO, "URL:  " + vURL);
        var list = targets[i].cookies;
        if (list == null) 
            list = new Array();
 
        var cookie = new Object(); 
        cookie.name = "SSO"; 
        cookie.domain = "10.65.87.101";
        cookie.path = "/";
        cookie.value = "cookie-value";
        cookie.expirationDate = new Date("05 Aug 2030 00:00:00 GMT");
        cookie.secure = false;
        list[list.length] = cookie;
        $context.currentClip.targets[i].cookies = list;
    }
  }
}

------------------------------------
Create composition level properties
------------------------------------
var pList = $context.composition.propertyList; // Get the prop list on composition
var pListTrack = $context.currentTrack.propertyList; // get the prop list on current track

var pIndex = -1; // Initialize index (-1 means not found)

// If there is a property list - search for prop name
if(!!pList.propertyNames) {
  // Update pIndex (will update to -1 if not found)
  pIndex = pList.propertyNames.indexOf("MyPropertyName");
}

// If index is -1, create property
if(pIndex == -1) {
  $context.result.postMessage($context.result.LEVEL_INFO, "Creating Property");
  pList.createProperty("MyPropertyName");
}

----
// dynamic ramp using script
var adjustments = new Array();
var adjustment = new Object();
adjustment.type = "rampto";
adjustment.trackName = "Track 2";
adjustment.distributionName = "Distribution 1";
adjustment.userCount = 10 * numLoops ;
adjustment.time = 60000 ; // 60 seconds
adjustments[0] = adjustment;
 
$context.composition.rampAdjust(null, adjustments) ;

------------------------------------------------------
rename transaction of next item
-----------------------------------------------------

// if there is a property by name TRANS_PREFIX on the track then append it to the transaction name

var pIndex = -1; // Initialize index (-1 means not found)

var pList = $context.currentTrack.propertyList; // get the prop list on current track

if(!!pList.propertyNames) {
  // pIndex will update to -1 if not found)
  pIndex = pList.propertyNames.indexOf("TRANS_PREFIX");
}

if ( pIndex != -1) {
    var tname = $context.currentItem.nextItem.name
    var tranprefix = $prop.value("track", "TRANS_PREFIX");
    $context.currentItem.nextItem.name = tname + '_' + tranprefix;
}

// -----------------------------------------------------------------
// You can override with a list and 1 target.  I've done it by percentages before, using something like this:
 
var number = $context.currentTrack.playNumber;
var vunum = parseInt($sysprop.value("Track","VUNumber"))+1;
number = (vunum+number) % 100;
if(number > 98) {
var newHostName = "store.website.com";
} else if(number > 96) {
var newHostName = "shop.website.com";
} else if(number > 91) {
var newHostName = "ship.website.com";
} else if(number > 80) {
var newHostName = "www.website.com";
} else if(number > 67) {
var newHostName = "sports.website.com";
} else if(number > 53) {
var newHostName = "school.website.com";
} else if(number > 35) {
var newHostName = "www2.website.com";
} else {
var newHostName = "save.website.com";
}

var clipTargets = $context.currentClip.targets;
for(var i = 0 ; i < clipTargets.length ; i++) {
clipTargets[i].systemPropertyList.setPropertyValue("HostName",newHostName);
clipTargets[i].systemPropertyList.setPropertyValue("HttpHostOverride",newHostName);
}

// -----------------------------------------------------------------------------------------