Java tutorial
/** * 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 net.logstash.logback.composite.loggingevent; import java.io.IOException; import org.slf4j.Marker; import com.fasterxml.jackson.core.JsonGenerator; import ch.qos.logback.classic.spi.ILoggingEvent; import net.logstash.logback.composite.AbstractFieldJsonProvider; import net.logstash.logback.marker.Markers; /** * Provides logic for deprecated functionality. * * @deprecated Use the {@link LogstashMarkersJsonProvider}, and log events with {@link Markers} instead. */ @Deprecated public class JsonMessageJsonProvider extends AbstractFieldJsonProvider<ILoggingEvent> { /** * Name of the {@link Marker} that indicates that the log event arguments should be appended to the * logstash json as an array with field value "json_message". * * @deprecated When logging, prefer using a {@link Markers#appendArray(String, Object...)} marker * with fieldName = "json_message" and objects = an array of arguments instead. */ @Deprecated public static final String JSON_MARKER_NAME = "JSON"; public JsonMessageJsonProvider() { super(); setFieldName("json_message"); } @Override public void writeTo(JsonGenerator generator, ILoggingEvent event) throws IOException { final Marker marker = event.getMarker(); if (marker != null && marker.contains(JSON_MARKER_NAME)) { generator.writeFieldName(getFieldName()); generator.writeObject(event.getArgumentArray()); } } }