patch Q to work better with continuation-local storage
Certain kinds of asynchronous operations don't play nicely with Q and continuation-local storage. This shim was put together to make CLS and Q work better withnode-redis
;
there may be other modules that are doing funky things with asynchronous
execution that require it. All it does is bind callbacks passed to
promise.then
so that the active CLS contexts at the time then()
was
called are correctly set.It only binds to one namespace at a time:
var cls = require('continuation-local-storage');
var ns = cls.createNamespace('NODESPACE');
var Q = require('q');
// load shim
var patchQ = require('cls-q');
patchQ(ns);
You can bind to more than one, but the overhead of doing so will start to add up quickly.