| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.logging.log4j.layout.template.json.resolver; |
| |
| import org.apache.logging.log4j.core.LogEvent; |
| import org.apache.logging.log4j.layout.template.json.util.JsonWriter; |
| |
| /** |
| * Thread resolver. |
| * |
| * <h3>Configuration</h3> |
| * |
| * <pre> |
| * config = "field" -> ( "name" | "id" | "priority" ) |
| * </pre> |
| * |
| * <h3>Examples</h3> |
| * |
| * Resolve the thread name: |
| * |
| * <pre> |
| * { |
| * "$resolver": "thread", |
| * "field": "name" |
| * } |
| * </pre> |
| */ |
| public final class ThreadResolver implements EventResolver { |
| |
| private static final EventResolver NAME_RESOLVER = |
| (final LogEvent logEvent, final JsonWriter jsonWriter) -> { |
| final String threadName = logEvent.getThreadName(); |
| jsonWriter.writeString(threadName); |
| }; |
| |
| private static final EventResolver ID_RESOLVER = |
| (final LogEvent logEvent, final JsonWriter jsonWriter) -> { |
| final long threadId = logEvent.getThreadId(); |
| jsonWriter.writeNumber(threadId); |
| }; |
| |
| private static final EventResolver PRIORITY_RESOLVER = |
| (final LogEvent logEvent, final JsonWriter jsonWriter) -> { |
| final int threadPriority = logEvent.getThreadPriority(); |
| jsonWriter.writeNumber(threadPriority); |
| }; |
| |
| private final EventResolver internalResolver; |
| |
| ThreadResolver(final TemplateResolverConfig config) { |
| this.internalResolver = createInternalResolver(config); |
| } |
| |
| private static EventResolver createInternalResolver( |
| final TemplateResolverConfig config) { |
| final String fieldName = config.getString("field"); |
| if ("name".equals(fieldName)) { |
| return NAME_RESOLVER; |
| } else if ("id".equals(fieldName)) { |
| return ID_RESOLVER; |
| } else if ("priority".equals(fieldName)) { |
| return PRIORITY_RESOLVER; |
| } |
| throw new IllegalArgumentException("unknown field: " + config); |
| } |
| |
| static String getName() { |
| return "thread"; |
| } |
| |
| @Override |
| public void resolve( |
| final LogEvent logEvent, |
| final JsonWriter jsonWriter) { |
| internalResolver.resolve(logEvent, jsonWriter); |
| } |
| |
| } |