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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> {
42
43 private static final long serialVersionUID = 1L;
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45 private final String fileName;
46 private Object advertisement;
47 private final Advertiser advertiser;
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49 private RandomAccessFileAppender(final String name, final Layout<? extends Serializable> layout, final Filter filter,
50 final RandomAccessFileManager manager, final String filename, final boolean ignoreExceptions,
51 final boolean immediateFlush, final Advertiser advertiser) {
52 super(name, layout, filter, ignoreExceptions, immediateFlush, manager);
53 if (advertiser != null) {
54 final Map<String, String> configuration = new HashMap<String, String>(
55 layout.getContentFormat());
56 configuration.putAll(manager.getContentFormat());
57 configuration.put("contentType", layout.getContentType());
58 configuration.put("name", name);
59 advertisement = advertiser.advertise(configuration);
60 }
61 this.fileName = filename;
62 this.advertiser = advertiser;
63 }
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65 @Override
66 public void stop() {
67 super.stop();
68 if (advertiser != null) {
69 advertiser.unadvertise(advertisement);
70 }
71 }
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78 @Override
79 public void append(final LogEvent event) {
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87 getManager().setEndOfBatch(event.isEndOfBatch());
88 super.append(event);
89 }
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96 public String getFileName() {
97 return this.fileName;
98 }
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104 public int getBufferSize() {
105 return getManager().getBufferSize();
106 }
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132 @PluginFactory
133 public static RandomAccessFileAppender createAppender(
134 @PluginAttribute("fileName") final String fileName,
135 @PluginAttribute("append") final String append,
136 @PluginAttribute("name") final String name,
137 @PluginAttribute("immediateFlush") final String immediateFlush,
138 @PluginAttribute("bufferSize") final String bufferSizeStr,
139 @PluginAttribute("ignoreExceptions") final String ignore,
140 @PluginElement("Layout") Layout<? extends Serializable> layout,
141 @PluginElement("Filter") final Filter filter,
142 @PluginAttribute("advertise") final String advertise,
143 @PluginAttribute("advertiseURI") final String advertiseURI,
144 @PluginConfiguration final Configuration config) {
145
146 final boolean isAppend = Booleans.parseBoolean(append, true);
147 final boolean isFlush = Booleans.parseBoolean(immediateFlush, true);
148 final boolean ignoreExceptions = Booleans.parseBoolean(ignore, true);
149 final boolean isAdvertise = Boolean.parseBoolean(advertise);
150 final int bufferSize = Integers.parseInt(bufferSizeStr, RandomAccessFileManager.DEFAULT_BUFFER_SIZE);
151
152 if (name == null) {
153 LOGGER.error("No name provided for FileAppender");
154 return null;
155 }
156
157 if (fileName == null) {
158 LOGGER.error("No filename provided for FileAppender with name "
159 + name);
160 return null;
161 }
162 if (layout == null) {
163 layout = PatternLayout.createDefaultLayout();
164 }
165 final RandomAccessFileManager manager = RandomAccessFileManager.getFileManager(
166 fileName, isAppend, isFlush, bufferSize, advertiseURI, layout
167 );
168 if (manager == null) {
169 return null;
170 }
171
172 return new RandomAccessFileAppender(
173 name, layout, filter, manager, fileName, ignoreExceptions, isFlush,
174 isAdvertise ? config.getAdvertiser() : null
175 );
176 }
177 }