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[Telemetry] Separate out delegator

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Separate out handling of delegation related to telemetry,
WTD-806.
This commit is contained in:
Victor Woeltjen
2015-04-16 16:01:51 -07:00
parent d16340ac4e
commit 774c4dec1d
3 changed files with 84 additions and 20 deletions
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25
platform/telemetry/src/TelemetrySubscription.js
View File

@ -1,8 +1,8 @@
/*global define*/
define(
['./TelemetryQueue', './TelemetryTable'],
function (TelemetryQueue, TelemetryTable) {
['./TelemetryQueue', './TelemetryTable', './TelemetryDelegator'],
function (TelemetryQueue, TelemetryTable, TelemetryDelegator) {
"use strict";
@ -31,7 +31,8 @@ define(
* the callback once, with access to the latest data
*/
function TelemetrySubscription($q, $timeout, domainObject, callback, lossless) {
var unsubscribePromise,
var delegator = new TelemetryDelegator($q),
unsubscribePromise,
latestValues = {},
telemetryObjects = [],
pool = lossless ? new TelemetryQueue() : new TelemetryTable(),
@ -42,23 +43,7 @@ define(
// This will either be the object in view, or object that
// this object delegates its telemetry capability to.
function promiseRelevantObjects(domainObject) {
// If object has been cleared, there are no relevant
// telemetry-providing domain objects.
if (!domainObject) {
return $q.when([]);
}
// Otherwise, try delegation first, and attach the
// object itself if it has a telemetry capability.
return $q.when(domainObject.useCapability(
"delegation",
"telemetry"
)).then(function (result) {
var head = domainObject.hasCapability("telemetry") ?
[ domainObject ] : [],
tail = result || [];
return head.concat(tail);
});
return delegator.promiseTelemetryObjects(domainObject);
}
function updateValuesFromPool() {