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[Telemetry] Listen for mutation

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Listen for mutation from telemetry subscriptions,
WTD-1329.
This commit is contained in:
Victor Woeltjen 2015-06-24 12:24:43 -07:00
parent e0f672d40d
commit 7a531493d8
1 changed files with 40 additions and 11 deletions
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51
platform/telemetry/src/TelemetrySubscription.js
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@ -59,6 +59,7 @@ define(
telemetryObjects = [],
pool = lossless ? new TelemetryQueue() : new TelemetryTable(),
metadatas,
unlistenToMutation,
updatePending;
// Look up domain objects which have telemetry capabilities.
@ -153,16 +154,41 @@ define(
return objects;
}
// Get a reference to relevant objects (those with telemetry
// capabilities) and subscribe to their telemetry updates.
// Keep a reference to their promised return values, as these
// will be unsubscribe functions. (This must be a promise
// because delegation is supported, and retrieving delegate
// telemetry-capable objects may be an asynchronous operation.)
telemetryObjectPromise = promiseRelevantObjects(domainObject);
unsubscribePromise = telemetryObjectPromise
.then(cacheObjectReferences)
.then(subscribeAll);
function initialize() {
// Get a reference to relevant objects (those with telemetry
// capabilities) and subscribe to their telemetry updates.
// Keep a reference to their promised return values, as these
// will be unsubscribe functions. (This must be a promise
// because delegation is supported, and retrieving delegate
// telemetry-capable objects may be an asynchronous operation.)
telemetryObjectPromise = promiseRelevantObjects(domainObject);
unsubscribePromise = telemetryObjectPromise
.then(cacheObjectReferences)
.then(subscribeAll);
}
function idsMatch(ids) {
return ids.every(function (id, index) {
return telemetryObjects[index].getId() === id;
});
}
function modelChange(model) {
if (!idsMatch((model || {}).composition || [])) {
// Reinitialize if composition has changed
initialize();
}
}
function addMutationListener() {
var mutation = domainObject.getCapability('mutation');
if (mutation) {
return mutation.listen(modelChange);
}
}
initialize();
unlistenToMutation = addMutationListener();
return {
/**
@ -172,6 +198,9 @@ define(
* @memberof TelemetrySubscription
*/
unsubscribe: function () {
if (unlistenToMutation) {
unlistenToMutation();
}
return unsubscribePromise.then(function (unsubscribes) {
return $q.all(unsubscribes.map(function (unsubscribe) {
return unsubscribe();
@ -264,4 +293,4 @@ define(
return TelemetrySubscription;
}
);
);