| /* |
| * 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.core.appender; |
| |
| import java.io.Serializable; |
| |
| import org.apache.logging.log4j.core.Filter; |
| import org.apache.logging.log4j.core.Layout; |
| import org.apache.logging.log4j.core.config.Configuration; |
| import org.apache.logging.log4j.core.config.plugins.Plugin; |
| import org.apache.logging.log4j.core.config.plugins.PluginAttribute; |
| import org.apache.logging.log4j.core.config.plugins.PluginConfiguration; |
| import org.apache.logging.log4j.core.config.plugins.PluginElement; |
| import org.apache.logging.log4j.core.config.plugins.PluginFactory; |
| import org.apache.logging.log4j.core.helpers.Booleans; |
| import org.apache.logging.log4j.core.layout.LoggerFields; |
| import org.apache.logging.log4j.core.layout.RFC5424Layout; |
| import org.apache.logging.log4j.core.layout.SyslogLayout; |
| import org.apache.logging.log4j.core.net.AbstractSocketManager; |
| import org.apache.logging.log4j.core.net.Advertiser; |
| import org.apache.logging.log4j.core.net.Protocol; |
| import org.apache.logging.log4j.util.EnglishEnums; |
| |
| /** |
| * The Syslog Appender. |
| */ |
| @Plugin(name = "Syslog", category = "Core", elementType = "appender", printObject = true) |
| public class SyslogAppender extends SocketAppender { |
| |
| protected static final String RFC5424 = "RFC5424"; |
| |
| protected SyslogAppender(final String name, final Layout<? extends Serializable> layout, final Filter filter, |
| final boolean ignoreExceptions, final boolean immediateFlush, |
| final AbstractSocketManager manager, final Advertiser advertiser) { |
| super(name, layout, filter, manager, ignoreExceptions, immediateFlush, advertiser); |
| |
| } |
| |
| /** |
| * Create a SyslogAppender. |
| * @param host The name of the host to connect to. |
| * @param portNum The port to connect to on the target host. |
| * @param protocol The Protocol to use. |
| * @param delay The interval in which failed writes should be retried. |
| * @param immediateFail True if the write should fail if no socket is immediately available. |
| * @param name The name of the Appender. |
| * @param immediateFlush "true" if data should be flushed on each write. |
| * @param ignore If {@code "true"} (default) exceptions encountered when appending events are logged; otherwise |
| * they are propagated to the caller. |
| * @param facility The Facility is used to try to classify the message. |
| * @param id The default structured data id to use when formatting according to RFC 5424. |
| * @param ein The IANA enterprise number. |
| * @param includeMDC Indicates whether data from the ThreadContextMap will be included in the RFC 5424 Syslog |
| * record. Defaults to "true:. |
| * @param mdcId The id to use for the MDC Structured Data Element. |
| * @param mdcPrefix The prefix to add to MDC key names. |
| * @param eventPrefix The prefix to add to event key names. |
| * @param includeNL If true, a newline will be appended to the end of the syslog record. The default is false. |
| * @param escapeNL String that should be used to replace newlines within the message text. |
| * @param appName The value to use as the APP-NAME in the RFC 5424 syslog record. |
| * @param msgId The default value to be used in the MSGID field of RFC 5424 syslog records. |
| * @param excludes A comma separated list of mdc keys that should be excluded from the LogEvent. |
| * @param includes A comma separated list of mdc keys that should be included in the FlumeEvent. |
| * @param required A comma separated list of mdc keys that must be present in the MDC. |
| * @param format If set to "RFC5424" the data will be formatted in accordance with RFC 5424. Otherwise, |
| * it will be formatted as a BSD Syslog record. |
| * @param filter A Filter to determine if the event should be handled by this Appender. |
| * @param config The Configuration. |
| * @param charsetName The character set to use when converting the syslog String to a byte array. |
| * @param exceptionPattern The converter pattern to use for formatting exceptions. |
| * @param loggerFields The logger fields |
| * @param advertise Whether to advertise |
| * @return A SyslogAppender. |
| */ |
| @PluginFactory |
| public static SyslogAppender createAppender( |
| @PluginAttribute("host") final String host, |
| @PluginAttribute("port") final String portNum, |
| @PluginAttribute("protocol") final String protocol, |
| @PluginAttribute("reconnectionDelay") final String delay, |
| @PluginAttribute("immediateFail") final String immediateFail, |
| @PluginAttribute("name") final String name, |
| @PluginAttribute("immediateFlush") final String immediateFlush, |
| @PluginAttribute("ignoreExceptions") final String ignore, |
| @PluginAttribute("facility") final String facility, |
| @PluginAttribute("id") final String id, |
| @PluginAttribute("enterpriseNumber") final String ein, |
| @PluginAttribute("includeMDC") final String includeMDC, |
| @PluginAttribute("mdcId") final String mdcId, |
| @PluginAttribute("mdcPrefix") final String mdcPrefix, |
| @PluginAttribute("eventPrefix") final String eventPrefix, |
| @PluginAttribute("newLine") final String includeNL, |
| @PluginAttribute("newLineEscape") final String escapeNL, |
| @PluginAttribute("appName") final String appName, |
| @PluginAttribute("messageId") final String msgId, |
| @PluginAttribute("mdcExcludes") final String excludes, |
| @PluginAttribute("mdcIncludes") final String includes, |
| @PluginAttribute("mdcRequired") final String required, |
| @PluginAttribute("format") final String format, |
| @PluginElement("Filters") final Filter filter, |
| @PluginConfiguration final Configuration config, |
| @PluginAttribute("charset") final String charsetName, |
| @PluginAttribute("exceptionPattern") final String exceptionPattern, |
| @PluginElement("LoggerFields") final LoggerFields[] loggerFields, |
| @PluginAttribute("advertise") final String advertise) { |
| |
| final boolean isFlush = Booleans.parseBoolean(immediateFlush, true); |
| final boolean ignoreExceptions = Booleans.parseBoolean(ignore, true); |
| final int reconnectDelay = AbstractAppender.parseInt(delay, 0); |
| final boolean fail = Booleans.parseBoolean(immediateFail, true); |
| final int port = AbstractAppender.parseInt(portNum, 0); |
| final boolean isAdvertise = Boolean.parseBoolean(advertise); |
| final Layout<? extends Serializable> layout = (RFC5424.equalsIgnoreCase(format) ? |
| RFC5424Layout.createLayout(facility, id, ein, includeMDC, mdcId, mdcPrefix, eventPrefix, includeNL, |
| escapeNL, appName, msgId, excludes, includes, required, exceptionPattern, "false", loggerFields, |
| config) : |
| SyslogLayout.createLayout(facility, includeNL, escapeNL, charsetName)); |
| |
| if (name == null) { |
| LOGGER.error("No name provided for SyslogAppender"); |
| return null; |
| } |
| final Protocol p = EnglishEnums.valueOf(Protocol.class, protocol); |
| final AbstractSocketManager manager = createSocketManager(p, host, port, reconnectDelay, fail, layout); |
| if (manager == null) { |
| return null; |
| } |
| |
| return new SyslogAppender(name, layout, filter, ignoreExceptions, isFlush, manager, |
| isAdvertise ? config.getAdvertiser() : null); |
| } |
| } |