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Use a promise for when the connection comes back

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This commit is contained in:
David Baker
2016-02-10 10:40:42 +00:00
parent 6224aff882
commit c3796c61cd
1 changed files with 26 additions and 10 deletions
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36
lib/sync.js
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@@ -70,6 +70,7 @@ function SyncApi(client, opts) {
this._syncState = null;
this._running = false;
this._keepAliveTimer = null;
this._connectionReturnedDefer = null;
}
/**
@@ -322,8 +323,9 @@ SyncApi.prototype.sync = function() {
client.pushRules = result;
getFilter(); // Now get the filter
}, function(err) {
self._onConnectionReturned = getPushRules;
self._startKeepAlives();
self._startKeepAlives().done(() => {;
getPushRules();
});
self._updateSyncState("ERROR", { error: err });
});
}
@@ -338,8 +340,9 @@ SyncApi.prototype.sync = function() {
debuglog("Using existing filter ID %s", filterId);
self._sync({ filterId: filterId });
}, function(err) {
self._onConnectionReturned = getFilter;
self._startKeepAlives();
self._startKeepAlives().done(() => {
getFilter();
});
self._updateSyncState("ERROR", { error: err });
});
}
@@ -372,7 +375,7 @@ SyncApi.prototype.stop = function() {
* @return {boolean} True if this resulted in a request being retried.
*/
SyncApi.prototype.retryImmediately = function() {
if (!this._onConnectionReturned) { return false; }
if (!this._connectionReturnedDefer) { return false; }
this._startKeepAlives();
return true;
};
@@ -389,6 +392,10 @@ SyncApi.prototype._sync = function(syncOptions) {
if (!this._running) {
debuglog("Sync no longer running: exiting.");
if (self._connectionReturnedDefer) {
self._connectionReturnedDefer.reject();
self._connectionReturnedDefer = null;
}
this._updateSyncState("STOPPED");
}
@@ -479,6 +486,10 @@ SyncApi.prototype._sync = function(syncOptions) {
}, function(err) {
if (!self._running) {
debuglog("Sync no longer running: exiting");
if (self._connectionReturnedDefer) {
self._connectionReturnedDefer.reject();
self._connectionReturnedDefer = null;
}
return;
}
console.error("/sync error %s", err);
@@ -486,8 +497,9 @@ SyncApi.prototype._sync = function(syncOptions) {
debuglog("Starting keep-alive");
self._syncConnectionLost = true;
self._onConnectionReturned = self._sync.bind(self, syncOptions);
self._startKeepAlives();
self._startKeepAlives().done(() => {
self._sync(syncOptions);
});
self._currentSyncRequest = null;
self._updateSyncState("ERROR", { error: err });
});
@@ -641,6 +653,10 @@ SyncApi.prototype._startKeepAlives = function() {
clearTimeout(this._keepAliveTimer);
}
this._pokeKeepAlive();
if (!this._connectionReturnedDefer) {
this._connectionReturnedDefer = q.defer();
}
return this._connectionReturnedDefer.promise;
};
/**
@@ -650,9 +666,9 @@ SyncApi.prototype._pokeKeepAlive = function() {
var self = this;
function success() {
clearTimeout(self._keepAliveTimer);
if (self._onConnectionReturned) {
self._onConnectionReturned();
self._onConnectionReturned = undefined;
if (self._connectionReturnedDefer) {
self._connectionReturnedDefer.resolve();
self._connectionReturnedDefer = null;
}
}