1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.ondevicepersonalization.services.util; 18 19 import android.adservices.ondevicepersonalization.CalleeMetadata; 20 import android.adservices.ondevicepersonalization.Constants; 21 import android.os.Bundle; 22 23 import com.android.odp.module.common.Clock; 24 import com.android.ondevicepersonalization.services.statsd.ApiCallStats; 25 import com.android.ondevicepersonalization.services.statsd.OdpStatsdLogger; 26 27 /** Utilities for stats logging */ 28 public class StatsUtils { 29 /** Subtracts callee reported latency from caller reported latency. */ getOverheadLatencyMillis(long callerLatencyMillis, Bundle result)30 public static long getOverheadLatencyMillis(long callerLatencyMillis, Bundle result) { 31 long calleeLatencyMillis = callerLatencyMillis; 32 if (result != null) { 33 CalleeMetadata metadata = 34 result.getParcelable(Constants.EXTRA_CALLEE_METADATA, CalleeMetadata.class); 35 if (metadata != null) { 36 if (metadata.getElapsedTimeMillis() > 0 37 && metadata.getElapsedTimeMillis() < callerLatencyMillis) { 38 calleeLatencyMillis = metadata.getElapsedTimeMillis(); 39 } 40 } 41 } 42 return callerLatencyMillis - calleeLatencyMillis; 43 } 44 45 /** Writes service request usage to statsd. Mainly for failure case. */ writeServiceRequestMetrics(int apiName, int responseCode)46 public static void writeServiceRequestMetrics(int apiName, int responseCode) { 47 ApiCallStats callStats = 48 new ApiCallStats.Builder(apiName).setResponseCode(responseCode).build(); 49 OdpStatsdLogger.getInstance().logApiCallStats(callStats); 50 } 51 52 /** Writes service request usage to statsd. */ writeServiceRequestMetrics( int apiName, String sdkPackageName, Bundle result, Clock clock, int responseCode, long startTimeMillis)53 public static void writeServiceRequestMetrics( 54 int apiName, 55 String sdkPackageName, 56 Bundle result, 57 Clock clock, 58 int responseCode, 59 long startTimeMillis) { 60 int latencyMillis = (int) (clock.elapsedRealtime() - startTimeMillis); 61 int overheadLatencyMillis = 62 (int) StatsUtils.getOverheadLatencyMillis(latencyMillis, result); 63 ApiCallStats callStats = 64 new ApiCallStats.Builder(apiName) 65 .setLatencyMillis(latencyMillis) 66 .setOverheadLatencyMillis(overheadLatencyMillis) 67 .setResponseCode(responseCode) 68 .setSdkPackageName(sdkPackageName == null ? "" : sdkPackageName) 69 .build(); 70 OdpStatsdLogger.getInstance().logApiCallStats(callStats); 71 } StatsUtils()72 private StatsUtils() {} 73 } 74