| // Copyright (C) 2020 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.google.gerrit.util.logging; |
| |
| import com.google.gson.FieldNamingPolicy; |
| import com.google.gson.Gson; |
| import com.google.gson.GsonBuilder; |
| import java.time.Instant; |
| import java.time.LocalDateTime; |
| import java.time.OffsetDateTime; |
| import java.time.ZoneId; |
| import java.time.ZoneOffset; |
| import java.time.ZonedDateTime; |
| import java.time.format.DateTimeFormatter; |
| import org.apache.log4j.Layout; |
| import org.apache.log4j.spi.LoggingEvent; |
| |
| public abstract class JsonLayout extends Layout { |
| private final DateTimeFormatter dateFormatter; |
| private final Gson gson; |
| private final ZoneOffset timeOffset; |
| |
| public JsonLayout() { |
| dateFormatter = createDateTimeFormatter(); |
| timeOffset = OffsetDateTime.now().getOffset(); |
| |
| gson = newGson(); |
| } |
| |
| public abstract DateTimeFormatter createDateTimeFormatter(); |
| |
| public abstract JsonLogEntry toJsonLogEntry(LoggingEvent event); |
| |
| @Override |
| public String format(LoggingEvent event) { |
| return gson.toJson(toJsonLogEntry(event)) + "\n"; |
| } |
| |
| private static Gson newGson() { |
| GsonBuilder gb = |
| new GsonBuilder() |
| .setFieldNamingPolicy(FieldNamingPolicy.LOWER_CASE_WITH_UNDERSCORES) |
| .disableHtmlEscaping(); |
| return gb.create(); |
| } |
| |
| public String formatDate(long now) { |
| return ZonedDateTime.of( |
| LocalDateTime.ofInstant(Instant.ofEpochMilli(now), timeOffset), ZoneId.systemDefault()) |
| .format(dateFormatter); |
| } |
| |
| @Override |
| public void activateOptions() {} |
| |
| @Override |
| public boolean ignoresThrowable() { |
| return false; |
| } |
| } |