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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/segmentation_platform/internal/android/segmentation_platform_service_android.h"
#include <memory>
#include "base/android/callback_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/functional/bind.h"
#include "base/memory/scoped_refptr.h"
#include "base/metrics/histogram_base.h"
#include "components/segmentation_platform/public/android/input_context_android.h"
#include "components/segmentation_platform/public/android/prediction_options_android.h"
#include "components/segmentation_platform/public/android/segmentation_platform_conversion_bridge.h"
#include "components/segmentation_platform/public/android/training_labels_android.h"
#include "components/segmentation_platform/public/input_context.h"
#include "components/segmentation_platform/public/prediction_options.h"
#include "components/segmentation_platform/public/proto/segmentation_platform.pb.h"
#include "components/segmentation_platform/public/result.h"
#include "components/segmentation_platform/public/segment_selection_result.h"
#include "components/segmentation_platform/public/segmentation_platform_service.h"
#include "components/segmentation_platform/public/trigger.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "components/segmentation_platform/internal/jni_headers/SegmentationPlatformServiceImpl_jni.h"
using base::android::AttachCurrentThread;
using base::android::ConvertJavaStringToUTF8;
using base::android::JavaParamRef;
namespace segmentation_platform {
namespace {
const char kSegmentationPlatformServiceBridgeKey[] =
"segmentation_platform_service_bridge";
void RunGetSelectedSegmentCallback(const JavaRef<jobject>& j_callback,
const SegmentSelectionResult& result) {
JNIEnv* env = AttachCurrentThread();
base::android::RunObjectCallbackAndroid(
j_callback,
SegmentationPlatformConversionBridge::CreateJavaSegmentSelectionResult(
env, result));
}
void RunGetClassificationResultCallback(const JavaRef<jobject>& j_callback,
const ClassificationResult& result) {
JNIEnv* env = AttachCurrentThread();
base::android::RunObjectCallbackAndroid(
j_callback,
SegmentationPlatformConversionBridge::CreateJavaClassificationResult(
env, result));
}
void RunInputKeysForModelCallback(const JavaRef<jobject>& j_callback,
std::set<std::string> input_keys) {
JNIEnv* env = AttachCurrentThread();
std::vector<std::string> inputs_vector(input_keys.begin(), input_keys.end());
base::android::RunObjectCallbackAndroid(
j_callback, base::android::ToJavaArrayOfStrings(env, inputs_vector));
}
} // namespace
// This function is declared in segmentation_platform_service.h and
// should be linked in to any binary using
// SegmentationPlatformService::GetJavaObject. static
ScopedJavaLocalRef<jobject> SegmentationPlatformService::GetJavaObject(
SegmentationPlatformService* service) {
if (!service->GetUserData(kSegmentationPlatformServiceBridgeKey)) {
service->SetUserData(
kSegmentationPlatformServiceBridgeKey,
std::make_unique<SegmentationPlatformServiceAndroid>(service));
}
SegmentationPlatformServiceAndroid* bridge =
static_cast<SegmentationPlatformServiceAndroid*>(
service->GetUserData(kSegmentationPlatformServiceBridgeKey));
return bridge->GetJavaObject();
}
SegmentationPlatformServiceAndroid::SegmentationPlatformServiceAndroid(
SegmentationPlatformService* segmentation_platform_service)
: segmentation_platform_service_(segmentation_platform_service) {
DCHECK(segmentation_platform_service_);
JNIEnv* env = base::android::AttachCurrentThread();
java_obj_.Reset(env, Java_SegmentationPlatformServiceImpl_create(
env, reinterpret_cast<int64_t>(this))
.obj());
}
SegmentationPlatformServiceAndroid::~SegmentationPlatformServiceAndroid() {
JNIEnv* env = base::android::AttachCurrentThread();
Java_SegmentationPlatformServiceImpl_clearNativePtr(env, java_obj_);
}
void SegmentationPlatformServiceAndroid::GetSelectedSegment(
JNIEnv* env,
const JavaParamRef<jobject>& jcaller,
const JavaParamRef<jstring>& j_segmentation_key,
const JavaParamRef<jobject>& jcallback) {
segmentation_platform_service_->GetSelectedSegment(
ConvertJavaStringToUTF8(env, j_segmentation_key),
base::BindOnce(&RunGetSelectedSegmentCallback,
ScopedJavaGlobalRef<jobject>(jcallback)));
}
void SegmentationPlatformServiceAndroid::GetClassificationResult(
JNIEnv* env,
const JavaParamRef<jobject>& j_caller,
const JavaParamRef<jstring>& j_segmentation_key,
const JavaParamRef<jobject>& j_prediction_options,
const JavaParamRef<jobject>& j_input_context,
const JavaParamRef<jobject>& j_callback) {
scoped_refptr<InputContext> native_input_context =
InputContextAndroid::ToNativeInputContext(env, j_input_context);
PredictionOptions native_prediction_options =
PredictionOptionsAndroid::ToNativePredictionOptions(env,
j_prediction_options);
segmentation_platform_service_->GetClassificationResult(
ConvertJavaStringToUTF8(env, j_segmentation_key),
native_prediction_options, native_input_context,
base::BindOnce(&RunGetClassificationResultCallback,
ScopedJavaGlobalRef<jobject>(j_callback)));
}
ScopedJavaLocalRef<jobject>
SegmentationPlatformServiceAndroid::GetCachedSegmentResult(
JNIEnv* env,
const JavaParamRef<jobject>& jcaller,
const JavaParamRef<jstring>& j_segmentation_key) {
return SegmentationPlatformConversionBridge::CreateJavaSegmentSelectionResult(
env, segmentation_platform_service_->GetCachedSegmentResult(
ConvertJavaStringToUTF8(env, j_segmentation_key)));
}
void SegmentationPlatformServiceAndroid::GetInputKeysForModel(
JNIEnv* env,
const JavaParamRef<jstring>& j_segmentation_key,
const JavaParamRef<jobject>& j_callback) {
segmentation_platform_service_->GetInputKeysForModel(
ConvertJavaStringToUTF8(env, j_segmentation_key),
base::BindOnce(&RunInputKeysForModelCallback,
ScopedJavaGlobalRef<jobject>(j_callback)));
}
void SegmentationPlatformServiceAndroid::CollectTrainingData(
JNIEnv* env,
jint j_segment_id,
jlong j_request_id,
jlong j_ukm_source_id,
const JavaParamRef<jobject>& j_param,
const JavaParamRef<jobject>& j_callback) {
segmentation_platform::TrainingLabels training_labels =
TrainingLabelsAndroid::ToNativeTrainingLabels(env, j_param);
segmentation_platform_service_->CollectTrainingData(
static_cast<proto::SegmentId>(j_segment_id),
segmentation_platform::TrainingRequestId::FromUnsafeValue(j_request_id),
j_ukm_source_id, std::move(training_labels),
base::BindOnce(&base::android::RunBooleanCallbackAndroid,
ScopedJavaGlobalRef<jobject>(j_callback)));
}
ScopedJavaLocalRef<jobject>
SegmentationPlatformServiceAndroid::GetJavaObject() {
return ScopedJavaLocalRef<jobject>(java_obj_);
}
} // namespace segmentation_platform
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