[TeX] Extracted Utils API for Telemetry Express Logging APIs

- hashString API moved to utils to be used by Histogram metric APIs

Bug: 262791652
Test: m
Change-Id: Ic049083c6e19c045e6f743e3bc96e1fc15ed4533
Merged-In: Ic049083c6e19c045e6f743e3bc96e1fc15ed4533

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

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2022 The Android Open Source Project
+ * Copyright (C) 2023 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.
@@ -39,9 +39,7 @@ public final class Counter {
      * @hide
      */
     public static void logIncrement(@NonNull String metricId, long amount) {
-        final long metricIdHash = hashString(metricId);
+        final long metricIdHash = Utils.hashString(metricId);
         FrameworkStatsLog.write(FrameworkStatsLog.EXPRESS_EVENT_REPORTED, metricIdHash, amount);
     }
-
-    private static native long hashString(String stringToHash);
 }

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

@@ -0,0 +1,21 @@
+/*
+ * Copyright (C) 2023 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;
+
+final class Utils {
+    static native long hashString(String stringToHash);
+}

core/jni/Android.bp

@@ -215,7 +215,7 @@ 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_expresslog_Utils.cpp",
                 "com_android_internal_net_NetworkUtilsInternal.cpp",
                 "com_android_internal_os_ClassLoaderFactory.cpp",
                 "com_android_internal_os_FuseAppLoop.cpp",

core/jni/AndroidRuntime.cpp

@@ -196,7 +196,7 @@ 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_expresslog_Utils(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);
@@ -1591,7 +1591,7 @@ 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_expresslog_Utils),
         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_Utils.cpp

@@ -26,7 +26,7 @@
 static jclass g_stringClass = nullptr;
 
 /**
- * Class:     com_android_internal_expresslog_Counter
+ * Class:     com_android_internal_expresslog_Utils
  * Method:    hashString
  * Signature: (Ljava/lang/String;)J
  */
@@ -43,15 +43,15 @@ static const JNINativeMethod g_methods[] = {
         {"hashString", "(Ljava/lang/String;)J", (void*)hashString},
 };
 
-static const char* const kCounterPathName = "com/android/internal/expresslog/Counter";
+static const char* const kUtilsPathName = "com/android/internal/expresslog/Utils";
 
 namespace android {
 
-int register_com_android_internal_expresslog_Counter(JNIEnv* env) {
+int register_com_android_internal_expresslog_Utils(JNIEnv* env) {
     jclass stringClass = FindClassOrDie(env, "java/lang/String");
     g_stringClass = MakeGlobalRefOrDie(env, stringClass);
 
-    return RegisterMethodsOrDie(env, kCounterPathName, g_methods, NELEM(g_methods));
+    return RegisterMethodsOrDie(env, kUtilsPathName, g_methods, NELEM(g_methods));
 }
 
 } // namespace android