[TeX] Introduced Telemetry Express Logging APIs (ff1ed5d7) · Commits · e / os / android_frameworks_base

core/java/com/android/internal/expresslog/Counter.java

0 → 100644

+47 −0

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		/*
		* Copyright (C) 2022 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.internal.expresslog;

		import android.annotation.NonNull;

		import com.android.internal.util.FrameworkStatsLog;

		/** Counter encapsulates StatsD write API calls */
		public final class Counter {

		// Not instantiable.
		private Counter() {}

		/**
		* Increments Telemetry Express Counter metric by 1
		* @hide
		*/
		public static void logIncrement(@NonNull String metricId) {
		logIncrement(metricId, 1);
		}

		/**
		* Increments Telemetry Express Counter metric by arbitrary value
		* @hide
		*/
		public static void logIncrement(@NonNull String metricId, long amount) {
		final long metricIdHash = hashString(metricId);
		FrameworkStatsLog.write(FrameworkStatsLog.EXPRESS_EVENT_REPORTED, metricIdHash, amount);
		}

		private static native long hashString(String stringToHash);
		}

core/jni/Android.bp

+5 −0

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		@@ -34,6 +34,8 @@ cc_library_shared {
		"-Wno-error=deprecated-declarations",
		"-Wunused",
		"-Wunreachable-code",

		"-DNAMESPACE_FOR_HASH_FUNCTIONS=farmhash",
		],

		cppflags: ["-Wno-conversion-null"],
		@@ -211,6 +213,7 @@ cc_library_shared {
		"android_content_res_Configuration.cpp",
		"android_security_Scrypt.cpp",
		"com_android_internal_content_om_OverlayConfig.cpp",
		"com_android_internal_expresslog_Counter.cpp",
		"com_android_internal_net_NetworkUtilsInternal.cpp",
		"com_android_internal_os_ClassLoaderFactory.cpp",
		"com_android_internal_os_FuseAppLoop.cpp",
		@@ -244,6 +247,7 @@ cc_library_shared {
		"libscrypt_static",
		"libstatssocket_lazy",
		"libskia",
		"libtextclassifier_hash_static",
		],

		shared_libs: [
		@@ -326,6 +330,7 @@ cc_library_shared {
		header_libs: [
		"bionic_libc_platform_headers",
		"dnsproxyd_protocol_headers",
		"libtextclassifier_hash_headers",
		],
		},
		host: {

core/jni/AndroidRuntime.cpp

+2 −0

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		@@ -193,6 +193,7 @@ extern int register_android_security_Scrypt(JNIEnv *env);
		extern int register_com_android_internal_content_F2fsUtils(JNIEnv* env);
		extern int register_com_android_internal_content_NativeLibraryHelper(JNIEnv *env);
		extern int register_com_android_internal_content_om_OverlayConfig(JNIEnv *env);
		extern int register_com_android_internal_expresslog_Counter(JNIEnv* env);
		extern int register_com_android_internal_net_NetworkUtilsInternal(JNIEnv* env);
		extern int register_com_android_internal_os_ClassLoaderFactory(JNIEnv* env);
		extern int register_com_android_internal_os_FuseAppLoop(JNIEnv* env);
		@@ -1584,6 +1585,7 @@ static const RegJNIRec gRegJNI[] = {
		REG_JNI(register_android_os_SharedMemory),
		REG_JNI(register_android_os_incremental_IncrementalManager),
		REG_JNI(register_com_android_internal_content_om_OverlayConfig),
		REG_JNI(register_com_android_internal_expresslog_Counter),
		REG_JNI(register_com_android_internal_net_NetworkUtilsInternal),
		REG_JNI(register_com_android_internal_os_ClassLoaderFactory),
		REG_JNI(register_com_android_internal_os_LongArrayMultiStateCounter),

core/jni/com_android_internal_expresslog_Counter.cpp

0 → 100644

+57 −0

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		/*
		* Copyright (C) 2022 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		#include <nativehelper/JNIHelp.h>
		#include <utils/hash/farmhash.h>

		#include "core_jni_helpers.h"

		// ----------------------------------------------------------------------------
		// JNI Glue
		// ----------------------------------------------------------------------------

		static jclass g_stringClass = nullptr;

		/**
		* Class: com_android_internal_expresslog_Counter
		* Method: hashString
		* Signature: (Ljava/lang/String;)J
		*/
		static jlong hashString(JNIEnv* env, jclass /class/, jstring metricNameObj) {
		ScopedUtfChars name(env, metricNameObj);
		if (name.c_str() == nullptr) {
		return 0;
		}

		return static_cast<jlong>(farmhash::Fingerprint64(name.c_str(), name.size()));
		}

		static const JNINativeMethod g_methods[] = {
		{"hashString", "(Ljava/lang/String;)J", (void*)hashString},
		};

		static const char* const kCounterPathName = "com/android/internal/expresslog/Counter";

		namespace android {

		int register_com_android_internal_expresslog_Counter(JNIEnv* env) {
		jclass stringClass = FindClassOrDie(env, "java/lang/String");
		g_stringClass = MakeGlobalRefOrDie(env, stringClass);

		return RegisterMethodsOrDie(env, kCounterPathName, g_methods, NELEM(g_methods));
		}

		} // namespace android