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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "services/metrics/public/cpp/ukm_recorder.h"
#include <string>
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "content/public/browser/web_contents.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_entry_builder.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "components/ukm/android/jni_headers/UkmRecorder_jni.h"
namespace metrics {
struct MetricFromJava {
std::string name;
int value;
};
MetricFromJava ConvertJavaMetric(
JNIEnv* env,
jni_zero::ScopedJavaLocalRef<jobject> j_metric) {
MetricFromJava metric;
metric.name = base::android::ConvertJavaStringToUTF8(
env, Java_UkmRecorder_getNameFromMetric(env, j_metric));
metric.value = Java_UkmRecorder_getValueFromMetric(env, j_metric);
return metric;
}
void ConvertJavaMetricsArrayToVector(
JNIEnv* env,
const base::android::JavaRef<jobjectArray>& array,
std::vector<MetricFromJava>* out) {
if (!array) {
return;
}
jsize jlength = env->GetArrayLength(array.obj());
// GetArrayLength() returns -1 if |array| is not a valid Java array.
CHECK_GE(jlength, 0) << "Invalid array length: " << jlength;
size_t length = static_cast<size_t>(std::max(0, jlength));
for (size_t i = 0; i < length; ++i) {
jni_zero::ScopedJavaLocalRef<jobject> j_metric(
env, static_cast<jobject>(env->GetObjectArrayElement(array.obj(), i)));
out->emplace_back(ConvertJavaMetric(env, j_metric));
}
}
// Called by Java org.chromium.chrome.browser.metrics.UkmRecorder.
static void JNI_UkmRecorder_RecordEventWithMultipleMetrics(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& j_web_contents,
const base::android::JavaParamRef<jstring>& j_event_name,
const base::android::JavaParamRef<jobjectArray>& j_metrics) {
content::WebContents* web_contents =
content::WebContents::FromJavaWebContents(j_web_contents);
const std::string event_name(
base::android::ConvertJavaStringToUTF8(env, j_event_name));
const ukm::SourceId source_id =
web_contents->GetPrimaryMainFrame()->GetPageUkmSourceId();
std::vector<MetricFromJava> metrics;
ConvertJavaMetricsArrayToVector(env, j_metrics, &metrics);
ukm::UkmEntryBuilder builder(source_id, event_name);
for (auto& metric : metrics) {
builder.SetMetric(std::move(metric.name), metric.value);
}
builder.Record(ukm::UkmRecorder::Get());
}
} // namespace metrics
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