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17 package org.apache.logging.log4j.core.appender;
18
19 import java.io.Serializable;
20 import java.nio.charset.Charset;
21
22 import org.apache.logging.log4j.core.Filter;
23 import org.apache.logging.log4j.core.Layout;
24 import org.apache.logging.log4j.core.config.Configuration;
25 import org.apache.logging.log4j.core.config.plugins.Plugin;
26 import org.apache.logging.log4j.core.config.plugins.PluginAliases;
27 import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
28 import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
29 import org.apache.logging.log4j.core.config.plugins.PluginElement;
30 import org.apache.logging.log4j.core.config.plugins.PluginFactory;
31 import org.apache.logging.log4j.core.layout.LoggerFields;
32 import org.apache.logging.log4j.core.layout.Rfc5424Layout;
33 import org.apache.logging.log4j.core.layout.SyslogLayout;
34 import org.apache.logging.log4j.core.net.AbstractSocketManager;
35 import org.apache.logging.log4j.core.net.Advertiser;
36 import org.apache.logging.log4j.core.net.Facility;
37 import org.apache.logging.log4j.core.net.Protocol;
38 import org.apache.logging.log4j.core.net.ssl.SslConfiguration;
39 import org.apache.logging.log4j.util.EnglishEnums;
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43
44 @Plugin(name = "Syslog", category = "Core", elementType = "appender", printObject = true)
45 public class SyslogAppender extends SocketAppender {
46
47 private static final long serialVersionUID = 1L;
48 protected static final String RFC5424 = "RFC5424";
49
50 protected SyslogAppender(final String name, final Layout<? extends Serializable> layout, final Filter filter,
51 final boolean ignoreExceptions, final boolean immediateFlush,
52 final AbstractSocketManager manager, final Advertiser advertiser) {
53 super(name, layout, filter, manager, ignoreExceptions, immediateFlush, advertiser);
54
55 }
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96 @PluginFactory
97 public static SyslogAppender createAppender(
98
99 @PluginAttribute("host") final String host,
100 @PluginAttribute(value = "port", defaultInt = 0) final int port,
101 @PluginAttribute("protocol") final String protocolStr,
102 @PluginElement("SSL") final SslConfiguration sslConfig,
103 @PluginAttribute(value = "connectTimeoutMillis", defaultInt = 0) final int connectTimeoutMillis,
104 @PluginAliases("reconnectionDelay")
105 @PluginAttribute(value = "reconnectionDelayMillis", defaultInt = 0) final int reconnectionDelayMillis,
106 @PluginAttribute(value = "immediateFail", defaultBoolean = true) final boolean immediateFail,
107 @PluginAttribute("name") final String name,
108 @PluginAttribute(value = "immediateFlush", defaultBoolean = true) final boolean immediateFlush,
109 @PluginAttribute(value = "ignoreExceptions", defaultBoolean = true) final boolean ignoreExceptions,
110 @PluginAttribute(value = "facility", defaultString = "LOCAL0") final Facility facility,
111 @PluginAttribute("id") final String id,
112 @PluginAttribute(value = "enterpriseNumber", defaultInt = Rfc5424Layout.DEFAULT_ENTERPRISE_NUMBER) final int enterpriseNumber,
113 @PluginAttribute(value = "includeMdc", defaultBoolean = true) final boolean includeMdc,
114 @PluginAttribute("mdcId") final String mdcId,
115 @PluginAttribute("mdcPrefix") final String mdcPrefix,
116 @PluginAttribute("eventPrefix") final String eventPrefix,
117 @PluginAttribute(value = "newLine", defaultBoolean = false) final boolean newLine,
118 @PluginAttribute("newLineEscape") final String escapeNL,
119 @PluginAttribute("appName") final String appName,
120 @PluginAttribute("messageId") final String msgId,
121 @PluginAttribute("mdcExcludes") final String excludes,
122 @PluginAttribute("mdcIncludes") final String includes,
123 @PluginAttribute("mdcRequired") final String required,
124 @PluginAttribute("format") final String format,
125 @PluginElement("Filter") final Filter filter,
126 @PluginConfiguration final Configuration config,
127 @PluginAttribute(value = "charset", defaultString = "UTF-8") final Charset charsetName,
128 @PluginAttribute("exceptionPattern") final String exceptionPattern,
129 @PluginElement("LoggerFields") final LoggerFields[] loggerFields, @PluginAttribute(value = "advertise", defaultBoolean = false) final boolean advertise) {
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133 final Protocol protocol = EnglishEnums.valueOf(Protocol.class, protocolStr);
134 final boolean useTlsMessageFormat = sslConfig != null || protocol == Protocol.SSL;
135 final Layout<? extends Serializable> layout = RFC5424.equalsIgnoreCase(format) ?
136 Rfc5424Layout.createLayout(facility, id, enterpriseNumber, includeMdc, mdcId, mdcPrefix, eventPrefix, newLine,
137 escapeNL, appName, msgId, excludes, includes, required, exceptionPattern, useTlsMessageFormat, loggerFields,
138 config) :
139 SyslogLayout.createLayout(facility, newLine, escapeNL, charsetName);
140
141 if (name == null) {
142 LOGGER.error("No name provided for SyslogAppender");
143 return null;
144 }
145 final AbstractSocketManager manager = createSocketManager(name, protocol, host, port, connectTimeoutMillis,
146 sslConfig, reconnectionDelayMillis, immediateFail, layout);
147
148 return new SyslogAppender(name, layout, filter, ignoreExceptions, immediateFlush, manager,
149 advertise ? config.getAdvertiser() : null);
150 }
151 }