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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 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
#include "mozilla/glean/bindings/Event.h"
#include "nsString.h"
#include "mozilla/dom/GleanMetricsBinding.h"
#include "mozilla/dom/ToJSValue.h"
#include "mozilla/glean/bindings/Common.h"
#include "jsapi.h"
#include "js/PropertyAndElement.h" // JS_DefineElement, JS_DefineProperty, JS_Enumerate, JS_GetProperty, JS_GetPropertyById
namespace mozilla::glean {
/* virtual */
JSObject* GleanEvent::WrapObject(JSContext* aCx,
JS::Handle<JSObject*> aGivenProto) {
return dom::GleanEvent_Binding::Wrap(aCx, this, aGivenProto);
}
// Convert all capital letters to "_x" where "x" is the corresponding lowercase.
nsCString camelToSnake(const nsACString& aCamel) {
nsCString snake;
const auto* start = aCamel.BeginReading();
const auto* end = aCamel.EndReading();
for (; start != end; ++start) {
if ('A' <= *start && *start <= 'Z') {
snake.AppendLiteral("_");
snake.Append(static_cast<char>(std::tolower(*start)));
} else {
snake.Append(*start);
}
}
return snake;
}
void GleanEvent::Record(
const dom::Optional<dom::Record<nsCString, nsCString>>& aExtra) {
if (!aExtra.WasPassed()) {
mEvent.Record();
return;
}
nsTArray<nsCString> extraKeys;
nsTArray<nsCString> extraValues;
CopyableTArray<Telemetry::EventExtraEntry> telExtras;
for (const auto& entry : aExtra.Value().Entries()) {
if (entry.mValue.IsVoid()) {
// Someone passed undefined/null for this value.
// Pretend it wasn't here.
continue;
}
// We accept camelCase extra keys, but Glean requires snake_case.
auto snakeKey = camelToSnake(entry.mKey);
extraKeys.AppendElement(snakeKey);
extraValues.AppendElement(entry.mValue);
telExtras.EmplaceBack(Telemetry::EventExtraEntry{entry.mKey, entry.mValue});
}
// Since this calls the implementation directly, we need to implement GIFFT
// here as well as in EventMetric::Record.
auto id = EventIdForMetric(mEvent.mId);
if (id) {
Telemetry::RecordEvent(id.extract(), Nothing(),
telExtras.IsEmpty() ? Nothing() : Some(telExtras));
}
// Calling the implementation directly, because we have a `string->string`
// map, not a `T->string` map the C++ API expects.
impl::fog_event_record(mEvent.mId, &extraKeys, &extraValues);
}
void GleanEvent::TestGetValue(
const nsACString& aPingName,
dom::Nullable<nsTArray<dom::GleanEventRecord>>& aResult, ErrorResult& aRv) {
auto resEvents = mEvent.TestGetValue(aPingName);
if (resEvents.isErr()) {
aRv.ThrowDataError(resEvents.unwrapErr());
return;
}
auto optEvents = resEvents.unwrap();
if (optEvents.isNothing()) {
return;
}
nsTArray<dom::GleanEventRecord> ret;
for (auto& event : optEvents.extract()) {
dom::GleanEventRecord record;
if (!event.mExtra.IsEmpty()) {
record.mExtra.Construct();
for (auto& extraEntry : event.mExtra) {
dom::binding_detail::RecordEntry<nsCString, nsCString> extra;
extra.mKey = std::get<0>(extraEntry);
extra.mValue = std::get<1>(extraEntry);
record.mExtra.Value().Entries().EmplaceBack(std::move(extra));
}
}
record.mCategory = event.mCategory;
record.mName = event.mName;
record.mTimestamp = event.mTimestamp;
ret.EmplaceBack(std::move(record));
}
aResult.SetValue(std::move(ret));
}
} // namespace mozilla::glean