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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,
#include "DetailedPromise.h"
#include "VideoUtils.h"
#include "mozilla/dom/DOMException.h"
#include "nsPrintfCString.h"
namespace mozilla::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::HistogramID aSuccessLatencyProbe,
Telemetry::HistogramID 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(kFailed);
}
void DetailedPromise::LogRejectionReason(uint32_t aErrorCode,
const nsACString& aReason) {
nsPrintfCString msg("%s promise rejected 0x%" PRIx32 " '%s'", mName.get(),
aErrorCode, PromiseFlatCString(aReason).get());
EME_LOG("%s", msg.get());
MaybeReportTelemetry(kFailed);
LogToBrowserConsole(NS_ConvertUTF8toUTF16(msg));
}
void DetailedPromise::MaybeReject(nsresult aArg, const nsACString& aReason) {
LogRejectionReason(static_cast<uint32_t>(aArg), aReason);
Promise::MaybeRejectWithDOMException(aArg, aReason);
}
void DetailedPromise::MaybeReject(ErrorResult&& aArg,
const nsACString& aReason) {
LogRejectionReason(aArg.ErrorCodeAsInt(), aReason);
Promise::MaybeReject(std::move(aArg));
}
/* static */
already_AddRefed<DetailedPromise> DetailedPromise::Create(
nsIGlobalObject* aGlobal, ErrorResult& aRv, const nsACString& aName) {
RefPtr<DetailedPromise> promise = new DetailedPromise(aGlobal, aName);
promise->CreateWrapper(aRv);
return aRv.Failed() ? nullptr : promise.forget();
}
void DetailedPromise::MaybeReportTelemetry(eStatus 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 == kSucceeded) ? "succcess" : "failure"), latency);
Telemetry::HistogramID tid = (aStatus == kSucceeded)
? mSuccessLatencyProbe.Value()
: mFailureLatencyProbe.Value();
Telemetry::Accumulate(tid, latency);
}
} // namespace mozilla::dom