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17 package org.apache.logging.log4j.core.appender;
18
19 import java.io.Serializable;
20 import java.util.HashMap;
21 import java.util.Map;
22
23 import org.apache.logging.log4j.core.Filter;
24 import org.apache.logging.log4j.core.Layout;
25 import org.apache.logging.log4j.core.LogEvent;
26 import org.apache.logging.log4j.core.config.Configuration;
27 import org.apache.logging.log4j.core.config.plugins.Plugin;
28 import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
29 import org.apache.logging.log4j.core.config.plugins.PluginConfiguration;
30 import org.apache.logging.log4j.core.config.plugins.PluginElement;
31 import org.apache.logging.log4j.core.config.plugins.PluginFactory;
32 import org.apache.logging.log4j.core.layout.PatternLayout;
33 import org.apache.logging.log4j.core.net.Advertiser;
34 import org.apache.logging.log4j.core.util.Booleans;
35 import org.apache.logging.log4j.core.util.Integers;
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40 @Plugin(name = "RandomAccessFile", category = "Core", elementType = "appender", printObject = true)
41 public final class RandomAccessFileAppender extends AbstractOutputStreamAppender<RandomAccessFileManager> {
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43 private final String fileName;
44 private Object advertisement;
45 private final Advertiser advertiser;
46
47 private RandomAccessFileAppender(final String name, final Layout<? extends Serializable> layout, final Filter filter,
48 final RandomAccessFileManager manager, final String filename, final boolean ignoreExceptions,
49 final boolean immediateFlush, final Advertiser advertiser) {
50 super(name, layout, filter, ignoreExceptions, immediateFlush, manager);
51 if (advertiser != null) {
52 final Map<String, String> configuration = new HashMap<String, String>(
53 layout.getContentFormat());
54 configuration.putAll(manager.getContentFormat());
55 configuration.put("contentType", layout.getContentType());
56 configuration.put("name", name);
57 advertisement = advertiser.advertise(configuration);
58 }
59 this.fileName = filename;
60 this.advertiser = advertiser;
61 }
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63 @Override
64 public void stop() {
65 super.stop();
66 if (advertiser != null) {
67 advertiser.unadvertise(advertisement);
68 }
69 }
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76 @Override
77 public void append(final LogEvent event) {
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85 getManager().setEndOfBatch(event.isEndOfBatch());
86 super.append(event);
87 }
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94 public String getFileName() {
95 return this.fileName;
96 }
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102 public int getBufferSize() {
103 return getManager().getBufferSize();
104 }
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130 @PluginFactory
131 public static RandomAccessFileAppender createAppender(
132 @PluginAttribute("fileName") final String fileName,
133 @PluginAttribute("append") final String append,
134 @PluginAttribute("name") final String name,
135 @PluginAttribute("immediateFlush") final String immediateFlush,
136 @PluginAttribute("bufferSize") final String bufferSizeStr,
137 @PluginAttribute("ignoreExceptions") final String ignore,
138 @PluginElement("Layout") Layout<? extends Serializable> layout,
139 @PluginElement("Filters") final Filter filter,
140 @PluginAttribute("advertise") final String advertise,
141 @PluginAttribute("advertiseURI") final String advertiseURI,
142 @PluginConfiguration final Configuration config) {
143
144 final boolean isAppend = Booleans.parseBoolean(append, true);
145 final boolean isFlush = Booleans.parseBoolean(immediateFlush, true);
146 final boolean ignoreExceptions = Booleans.parseBoolean(ignore, true);
147 final boolean isAdvertise = Boolean.parseBoolean(advertise);
148 final int bufferSize = Integers.parseInt(bufferSizeStr, RandomAccessFileManager.DEFAULT_BUFFER_SIZE);
149
150 if (name == null) {
151 LOGGER.error("No name provided for FileAppender");
152 return null;
153 }
154
155 if (fileName == null) {
156 LOGGER.error("No filename provided for FileAppender with name "
157 + name);
158 return null;
159 }
160 if (layout == null) {
161 layout = PatternLayout.createDefaultLayout();
162 }
163 final RandomAccessFileManager manager = RandomAccessFileManager.getFileManager(
164 fileName, isAppend, isFlush, bufferSize, advertiseURI, layout
165 );
166 if (manager == null) {
167 return null;
168 }
169
170 return new RandomAccessFileAppender(
171 name, layout, filter, manager, fileName, ignoreExceptions, isFlush,
172 isAdvertise ? config.getAdvertiser() : null
173 );
174 }
175 }