| /* |
| * 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.dubbo.rpc.filter; |
| |
| import org.apache.dubbo.common.extension.Activate; |
| import org.apache.dubbo.common.logger.Logger; |
| import org.apache.dubbo.common.logger.LoggerFactory; |
| import org.apache.dubbo.common.utils.ConcurrentHashSet; |
| import org.apache.dubbo.common.utils.ConfigUtils; |
| import org.apache.dubbo.common.utils.NamedThreadFactory; |
| import org.apache.dubbo.rpc.Filter; |
| import org.apache.dubbo.rpc.Invocation; |
| import org.apache.dubbo.rpc.Invoker; |
| import org.apache.dubbo.rpc.Result; |
| import org.apache.dubbo.rpc.RpcException; |
| import org.apache.dubbo.rpc.support.AccessLogData; |
| |
| import java.io.File; |
| import java.io.FileWriter; |
| import java.io.IOException; |
| import java.text.DateFormat; |
| import java.text.SimpleDateFormat; |
| import java.util.Date; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.concurrent.ConcurrentHashMap; |
| import java.util.concurrent.Executors; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| |
| import static org.apache.dubbo.common.constants.CommonConstants.PROVIDER; |
| import static org.apache.dubbo.rpc.Constants.ACCESS_LOG_KEY; |
| |
| /** |
| * Record access log for the service. |
| * <p> |
| * Logger key is <code><b>dubbo.accesslog</b></code>. |
| * In order to configure access log appear in the specified appender only, additivity need to be configured in log4j's |
| * config file, for example: |
| * <code> |
| * <pre> |
| * <logger name="<b>dubbo.accesslog</b>" <font color="red">additivity="false"</font>> |
| * <level value="info" /> |
| * <appender-ref ref="foo" /> |
| * </logger> |
| * </pre></code> |
| */ |
| @Activate(group = PROVIDER, value = ACCESS_LOG_KEY) |
| public class AccessLogFilter implements Filter { |
| |
| private static final Logger logger = LoggerFactory.getLogger(AccessLogFilter.class); |
| |
| private static final String LOG_KEY = "dubbo.accesslog"; |
| |
| private static final int LOG_MAX_BUFFER = 5000; |
| |
| private static final long LOG_OUTPUT_INTERVAL = 5000; |
| |
| private static final String FILE_DATE_FORMAT = "yyyyMMdd"; |
| |
| // It's safe to declare it as singleton since it runs on single thread only |
| private static final DateFormat FILE_NAME_FORMATTER = new SimpleDateFormat(FILE_DATE_FORMAT); |
| |
| private static final Map<String, Set<AccessLogData>> LOG_ENTRIES = new ConcurrentHashMap<>(); |
| |
| private static final ScheduledExecutorService LOG_SCHEDULED = Executors.newSingleThreadScheduledExecutor(new NamedThreadFactory("Dubbo-Access-Log", true)); |
| |
| /** |
| * Default constructor initialize demon thread for writing into access log file with names with access log key |
| * defined in url <b>accesslog</b> |
| */ |
| public AccessLogFilter() { |
| LOG_SCHEDULED.scheduleWithFixedDelay(this::writeLogToFile, LOG_OUTPUT_INTERVAL, LOG_OUTPUT_INTERVAL, TimeUnit.MILLISECONDS); |
| } |
| |
| /** |
| * This method logs the access log for service method invocation call. |
| * |
| * @param invoker service |
| * @param inv Invocation service method. |
| * @return Result from service method. |
| * @throws RpcException |
| */ |
| @Override |
| public Result invoke(Invoker<?> invoker, Invocation inv) throws RpcException { |
| try { |
| String accessLogKey = invoker.getUrl().getParameter(ACCESS_LOG_KEY); |
| if (ConfigUtils.isNotEmpty(accessLogKey)) { |
| AccessLogData logData = AccessLogData.newLogData(); |
| logData.buildAccessLogData(invoker, inv); |
| log(accessLogKey, logData); |
| } |
| } catch (Throwable t) { |
| logger.warn("Exception in AccessLogFilter of service(" + invoker + " -> " + inv + ")", t); |
| } |
| return invoker.invoke(inv); |
| } |
| |
| private void log(String accessLog, AccessLogData accessLogData) { |
| Set<AccessLogData> logSet = LOG_ENTRIES.computeIfAbsent(accessLog, k -> new ConcurrentHashSet<>()); |
| |
| if (logSet.size() < LOG_MAX_BUFFER) { |
| logSet.add(accessLogData); |
| } else { |
| logger.warn("AccessLog buffer is full. Do a force writing to file to clear buffer."); |
| //just write current logSet to file. |
| writeLogSetToFile(accessLog, logSet); |
| //after force writing, add accessLogData to current logSet |
| logSet.add(accessLogData); |
| } |
| } |
| |
| private void writeLogSetToFile(String accessLog, Set<AccessLogData> logSet) { |
| try { |
| if (ConfigUtils.isDefault(accessLog)) { |
| processWithServiceLogger(logSet); |
| } else { |
| File file = new File(accessLog); |
| createIfLogDirAbsent(file); |
| if (logger.isDebugEnabled()) { |
| logger.debug("Append log to " + accessLog); |
| } |
| renameFile(file); |
| processWithAccessKeyLogger(logSet, file); |
| } |
| } catch (Exception e) { |
| logger.error(e.getMessage(), e); |
| } |
| } |
| |
| private void writeLogToFile() { |
| if (!LOG_ENTRIES.isEmpty()) { |
| for (Map.Entry<String, Set<AccessLogData>> entry : LOG_ENTRIES.entrySet()) { |
| String accessLog = entry.getKey(); |
| Set<AccessLogData> logSet = entry.getValue(); |
| writeLogSetToFile(accessLog, logSet); |
| } |
| } |
| } |
| |
| private void processWithAccessKeyLogger(Set<AccessLogData> logSet, File file) throws IOException { |
| try (FileWriter writer = new FileWriter(file, true)) { |
| for (Iterator<AccessLogData> iterator = logSet.iterator(); |
| iterator.hasNext(); |
| iterator.remove()) { |
| writer.write(iterator.next().getLogMessage()); |
| writer.write(System.getProperty("line.separator")); |
| } |
| writer.flush(); |
| } |
| } |
| |
| private void processWithServiceLogger(Set<AccessLogData> logSet) { |
| for (Iterator<AccessLogData> iterator = logSet.iterator(); |
| iterator.hasNext(); |
| iterator.remove()) { |
| AccessLogData logData = iterator.next(); |
| LoggerFactory.getLogger(LOG_KEY + "." + logData.getServiceName()).info(logData.getLogMessage()); |
| } |
| } |
| |
| private void createIfLogDirAbsent(File file) { |
| File dir = file.getParentFile(); |
| if (null != dir && !dir.exists()) { |
| dir.mkdirs(); |
| } |
| } |
| |
| private void renameFile(File file) { |
| if (file.exists()) { |
| String now = FILE_NAME_FORMATTER.format(new Date()); |
| String last = FILE_NAME_FORMATTER.format(new Date(file.lastModified())); |
| if (!now.equals(last)) { |
| File archive = new File(file.getAbsolutePath() + "." + last); |
| file.renameTo(archive); |
| } |
| } |
| } |
| } |