| /* |
| * Copyright (C) 2017 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 android.util.proto; |
| |
| import android.util.AggStats; |
| import android.util.Duration; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| /** |
| * This class contains a list of helper functions to write common proto in |
| * //frameworks/base/core/proto/android/base directory |
| * @hide |
| */ |
| public class ProtoUtils { |
| |
| /** |
| * Dump AggStats to ProtoOutputStream |
| */ |
| public static void toAggStatsProto(ProtoOutputStream proto, long fieldId, |
| long min, long average, long max, int meanKb, int maxKb) { |
| final long aggStatsToken = proto.start(fieldId); |
| proto.write(AggStats.MIN, min); |
| proto.write(AggStats.AVERAGE, average); |
| proto.write(AggStats.MAX, max); |
| proto.write(AggStats.MEAN_KB, meanKb); |
| proto.write(AggStats.MAX_KB, maxKb); |
| proto.end(aggStatsToken); |
| } |
| |
| /** |
| * Dump AggStats to ProtoOutputStream |
| */ |
| public static void toAggStatsProto(ProtoOutputStream proto, long fieldId, |
| long min, long average, long max) { |
| toAggStatsProto(proto, fieldId, min, average, max, 0, 0); |
| } |
| |
| /** |
| * Dump Duration to ProtoOutputStream |
| */ |
| public static void toDuration(ProtoOutputStream proto, long fieldId, long startMs, long endMs) { |
| final long token = proto.start(fieldId); |
| proto.write(Duration.START_MS, startMs); |
| proto.write(Duration.END_MS, endMs); |
| proto.end(token); |
| } |
| |
| /** |
| * Helper function to write bit-wise flags to proto as repeated enums |
| */ |
| public static void writeBitWiseFlagsToProtoEnum(ProtoOutputStream proto, long fieldId, |
| long flags, int[] origEnums, int[] protoEnums) { |
| if (protoEnums.length != origEnums.length) { |
| throw new IllegalArgumentException("The length of origEnums must match protoEnums"); |
| } |
| int len = origEnums.length; |
| for (int i = 0; i < len; i++) { |
| // handle zero flag case. |
| if (origEnums[i] == 0 && flags == 0) { |
| proto.write(fieldId, protoEnums[i]); |
| return; |
| } |
| if ((flags & origEnums[i]) != 0) { |
| proto.write(fieldId, protoEnums[i]); |
| } |
| } |
| } |
| |
| /** |
| * Provide debug data about the current field as a string |
| */ |
| public static String currentFieldToString(ProtoInputStream proto) throws IOException { |
| StringBuilder sb = new StringBuilder(); |
| |
| final int fieldNumber = proto.getFieldNumber(); |
| final int wireType = proto.getWireType(); |
| long fieldConstant; |
| |
| sb.append("Offset : 0x").append(Integer.toHexString(proto.getOffset())); |
| sb.append("\nField Number : 0x").append(Integer.toHexString(proto.getFieldNumber())); |
| sb.append("\nWire Type : "); |
| switch (wireType) { |
| case ProtoStream.WIRE_TYPE_VARINT: |
| fieldConstant = ProtoStream.makeFieldId(fieldNumber, |
| ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_INT64); |
| sb.append("varint\nField Value : 0x"); |
| sb.append(Long.toHexString(proto.readLong(fieldConstant))); |
| break; |
| case ProtoStream.WIRE_TYPE_FIXED64: |
| fieldConstant = ProtoStream.makeFieldId(fieldNumber, |
| ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_FIXED64); |
| sb.append("fixed64\nField Value : 0x"); |
| sb.append(Long.toHexString(proto.readLong(fieldConstant))); |
| break; |
| case ProtoStream.WIRE_TYPE_LENGTH_DELIMITED: |
| fieldConstant = ProtoStream.makeFieldId(fieldNumber, |
| ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_BYTES); |
| sb.append("length delimited\nField Bytes : "); |
| sb.append(Arrays.toString(proto.readBytes(fieldConstant))); |
| break; |
| case ProtoStream.WIRE_TYPE_START_GROUP: |
| sb.append("start group"); |
| break; |
| case ProtoStream.WIRE_TYPE_END_GROUP: |
| sb.append("end group"); |
| break; |
| case ProtoStream.WIRE_TYPE_FIXED32: |
| fieldConstant = ProtoStream.makeFieldId(fieldNumber, |
| ProtoStream.FIELD_COUNT_SINGLE | ProtoStream.FIELD_TYPE_FIXED32); |
| sb.append("fixed32\nField Value : 0x"); |
| sb.append(Integer.toHexString(proto.readInt(fieldConstant))); |
| break; |
| default: |
| sb.append("unknown(").append(proto.getWireType()).append(")"); |
| } |
| return sb.toString(); |
| } |
| } |