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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "DetailedPromise.h"
#include "mozilla/dom/DOMException.h"
#include "nsPrintfCString.h"
namespace mozilla {
namespace dom {
DetailedPromise::DetailedPromise(nsIGlobalObject* aGlobal,
const nsACString& aName)
: Promise(aGlobal)
, mName(aName)
, mResponded(false)
, mStartTime(TimeStamp::Now())
{
}
DetailedPromise::DetailedPromise(nsIGlobalObject* aGlobal,
const nsACString& aName,
Telemetry::ID aSuccessLatencyProbe,
Telemetry::ID aFailureLatencyProbe)
: DetailedPromise(aGlobal, aName)
{
mSuccessLatencyProbe.Construct(aSuccessLatencyProbe);
mFailureLatencyProbe.Construct(aFailureLatencyProbe);
}
DetailedPromise::~DetailedPromise()
{
// It would be nice to assert that mResponded is identical to
// GetPromiseState() == PromiseState::Rejected. But by now we've been
// unlinked, so don't have a reference to our actual JS Promise object
// anymore.
MaybeReportTelemetry(Failed);
}
void
DetailedPromise::MaybeReject(nsresult aArg, const nsACString& aReason)
{
nsPrintfCString msg("%s promise rejected 0x%x '%s'", mName.get(), aArg,
PromiseFlatCString(aReason).get());
EME_LOG(msg.get());
MaybeReportTelemetry(Failed);
LogToBrowserConsole(NS_ConvertUTF8toUTF16(msg));
ErrorResult rv;
rv.ThrowDOMException(aArg, aReason);
Promise::MaybeReject(rv);
}
void
DetailedPromise::MaybeReject(ErrorResult&, const nsACString& aReason)
{
NS_NOTREACHED("nsresult expected in MaybeReject()");
}
/* static */ already_AddRefed<DetailedPromise>
DetailedPromise::Create(nsIGlobalObject* aGlobal,
ErrorResult& aRv,
const nsACString& aName)
{
RefPtr<DetailedPromise> promise = new DetailedPromise(aGlobal, aName);
promise->CreateWrapper(nullptr, aRv);
return aRv.Failed() ? nullptr : promise.forget();
}
/* static */ already_AddRefed<DetailedPromise>
DetailedPromise::Create(nsIGlobalObject* aGlobal,
ErrorResult& aRv,
const nsACString& aName,
Telemetry::ID aSuccessLatencyProbe,
Telemetry::ID aFailureLatencyProbe)
{
RefPtr<DetailedPromise> promise = new DetailedPromise(aGlobal, aName, aSuccessLatencyProbe, aFailureLatencyProbe);
promise->CreateWrapper(nullptr, aRv);
return aRv.Failed() ? nullptr : promise.forget();
}
void
DetailedPromise::MaybeReportTelemetry(Status aStatus)
{
if (mResponded) {
return;
}
mResponded = true;
if (!mSuccessLatencyProbe.WasPassed() || !mFailureLatencyProbe.WasPassed()) {
return;
}
uint32_t latency = (TimeStamp::Now() - mStartTime).ToMilliseconds();
EME_LOG("%s %s latency %ums reported via telemetry", mName.get(),
((aStatus == Succeeded) ? "succcess" : "failure"), latency);
Telemetry::ID tid = (aStatus == Succeeded) ? mSuccessLatencyProbe.Value()
: mFailureLatencyProbe.Value();
Telemetry::Accumulate(tid, latency);
}
} // namespace dom
} // namespace mozilla
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