136 lines
5.2 KiB
Java
136 lines
5.2 KiB
Java
/*
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* Copyright (C) 2017 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package android.util.proto;
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import android.util.AggStats;
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import android.util.Duration;
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import java.io.IOException;
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import java.util.Arrays;
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/**
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* This class contains a list of helper functions to write common proto in
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* //frameworks/base/core/proto/android/base directory
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* @hide
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*/
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@android.ravenwood.annotation.RavenwoodKeepWholeClass
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public class ProtoUtils {
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/**
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* Dump AggStats to ProtoOutputStream
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*/
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public static void toAggStatsProto(ProtoOutputStream proto, long fieldId,
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long min, long average, long max, int meanKb, int maxKb) {
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final long aggStatsToken = proto.start(fieldId);
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proto.write(AggStats.MIN, min);
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proto.write(AggStats.AVERAGE, average);
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proto.write(AggStats.MAX, max);
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proto.write(AggStats.MEAN_KB, meanKb);
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proto.write(AggStats.MAX_KB, maxKb);
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proto.end(aggStatsToken);
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}
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/**
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* Dump AggStats to ProtoOutputStream
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*/
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public static void toAggStatsProto(ProtoOutputStream proto, long fieldId,
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long min, long average, long max) {
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toAggStatsProto(proto, fieldId, min, average, max, 0, 0);
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}
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/**
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* Dump Duration to ProtoOutputStream
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*/
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public static void toDuration(ProtoOutputStream proto, long fieldId, long startMs, long endMs) {
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final long token = proto.start(fieldId);
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proto.write(Duration.START_MS, startMs);
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proto.write(Duration.END_MS, endMs);
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proto.end(token);
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}
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/**
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* Helper function to write bit-wise flags to proto as repeated enums
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*/
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public static void writeBitWiseFlagsToProtoEnum(ProtoOutputStream proto, long fieldId,
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long flags, int[] origEnums, int[] protoEnums) {
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if (protoEnums.length != origEnums.length) {
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throw new IllegalArgumentException("The length of origEnums must match protoEnums");
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}
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int len = origEnums.length;
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for (int i = 0; i < len; i++) {
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// handle zero flag case.
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if (origEnums[i] == 0 && flags == 0) {
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proto.write(fieldId, protoEnums[i]);
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return;
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}
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if ((flags & origEnums[i]) != 0) {
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proto.write(fieldId, protoEnums[i]);
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}
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}
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}
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/**
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* Provide debug data about the current field as a string
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*/
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public static String currentFieldToString(ProtoInputStream proto) throws IOException {
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StringBuilder sb = new StringBuilder();
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final int fieldNumber = proto.getFieldNumber();
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final int wireType = proto.getWireType();
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long fieldConstant;
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sb.append("Offset : 0x").append(Integer.toHexString(proto.getOffset()));
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sb.append("\nField Number : 0x").append(Integer.toHexString(proto.getFieldNumber()));
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sb.append("\nWire Type : ");
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switch (wireType) {
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case ProtoStream.WIRE_TYPE_VARINT:
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fieldConstant = ProtoStream.makeFieldId(fieldNumber,
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ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_INT64);
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sb.append("varint\nField Value : 0x");
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sb.append(Long.toHexString(proto.readLong(fieldConstant)));
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break;
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case ProtoStream.WIRE_TYPE_FIXED64:
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fieldConstant = ProtoStream.makeFieldId(fieldNumber,
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ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_FIXED64);
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sb.append("fixed64\nField Value : 0x");
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sb.append(Long.toHexString(proto.readLong(fieldConstant)));
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break;
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case ProtoStream.WIRE_TYPE_LENGTH_DELIMITED:
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fieldConstant = ProtoStream.makeFieldId(fieldNumber,
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ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_BYTES);
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sb.append("length delimited\nField Bytes : ");
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sb.append(Arrays.toString(proto.readBytes(fieldConstant)));
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break;
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case ProtoStream.WIRE_TYPE_START_GROUP:
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sb.append("start group");
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break;
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case ProtoStream.WIRE_TYPE_END_GROUP:
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sb.append("end group");
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break;
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case ProtoStream.WIRE_TYPE_FIXED32:
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fieldConstant = ProtoStream.makeFieldId(fieldNumber,
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ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_FIXED32);
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sb.append("fixed32\nField Value : 0x");
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sb.append(Integer.toHexString(proto.readInt(fieldConstant)));
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break;
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default:
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sb.append("unknown(").append(proto.getWireType()).append(")");
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}
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return sb.toString();
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}
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}
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