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define("dojo/promise/instrumentation", [
"./tracer",
"../has",
"../_base/lang",
"../_base/array"
], function(tracer, has, lang, arrayUtil){
function logError(error, rejection, deferred){
var stack = "";
if(error && error.stack){
stack += error.stack;
}
if(rejection && rejection.stack){
stack += "\n ----------------------------------------\n rejected" + rejection.stack.split("\n").slice(1).join("\n").replace(/^\s+/, " ");
}
if(deferred && deferred.stack){
stack += "\n ----------------------------------------\n" + deferred.stack;
}
console.error(error, stack);
}
function reportRejections(error, handled, rejection, deferred){
if(!handled){
logError(error, rejection, deferred);
}
}
var errors = [];
var activeTimeout = false;
var unhandledWait = 1000;
function trackUnhandledRejections(error, handled, rejection, deferred){
if(handled){
arrayUtil.some(errors, function(obj, ix){
if(obj.error === error){
errors.splice(ix, 1);
return true;
}
});
}else if(!arrayUtil.some(errors, function(obj){ return obj.error === error; })){
errors.push({
error: error,
rejection: rejection,
deferred: deferred,
timestamp: new Date().getTime()
});
}
if(!activeTimeout){
activeTimeout = setTimeout(logRejected, unhandledWait);
}
}
function logRejected(){
var now = new Date().getTime();
var reportBefore = now - unhandledWait;
errors = arrayUtil.filter(errors, function(obj){
if(obj.timestamp < reportBefore){
logError(obj.error, obj.rejection, obj.deferred);
return false;
}
return true;
});
if(errors.length){
activeTimeout = setTimeout(logRejected, errors[0].timestamp + unhandledWait - now);
}else{
activeTimeout = false;
}
}
return function(Deferred){
// summary:
// Initialize instrumentation for the Deferred class.
// description:
// Initialize instrumentation for the Deferred class.
// Done automatically by `dojo/Deferred` if the
// `deferredInstrumentation` and `useDeferredInstrumentation`
// config options are set.
//
// Sets up `dojo/promise/tracer` to log to the console.
//
// Sets up instrumentation of rejected deferreds so unhandled
// errors are logged to the console.
var usage = has("config-useDeferredInstrumentation");
if(usage){
tracer.on("resolved", lang.hitch(console, "log", "resolved"));
tracer.on("rejected", lang.hitch(console, "log", "rejected"));
tracer.on("progress", lang.hitch(console, "log", "progress"));
var args = [];
if(typeof usage === "string"){
args = usage.split(",");
usage = args.shift();
}
if(usage === "report-rejections"){
Deferred.instrumentRejected = reportRejections;
}else if(usage === "report-unhandled-rejections" || usage === true || usage === 1){
Deferred.instrumentRejected = trackUnhandledRejections;
unhandledWait = parseInt(args[0], 10) || unhandledWait;
}else{
throw new Error("Unsupported instrumentation usage <" + usage + ">");
}
}
};
});
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