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17 package org.apache.logging.log4j.core.appender.rolling.action;
18
19 import java.io.File;
20 import java.io.FileInputStream;
21 import java.io.FileOutputStream;
22 import java.io.IOException;
23 import java.util.zip.ZipEntry;
24 import java.util.zip.ZipOutputStream;
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30 public final class ZipCompressAction extends AbstractAction {
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32 private static final int BUF_SIZE = 8102;
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37 private final File source;
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42 private final File destination;
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47 private final boolean deleteSource;
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52 private final int level;
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63 public ZipCompressAction(final File source, final File destination, final boolean deleteSource, final int level) {
64 if (source == null) {
65 throw new NullPointerException("source");
66 }
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68 if (destination == null) {
69 throw new NullPointerException("destination");
70 }
71
72 this.source = source;
73 this.destination = destination;
74 this.deleteSource = deleteSource;
75 this.level = level;
76 }
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84 @Override
85 public boolean execute() throws IOException {
86 return execute(source, destination, deleteSource, level);
87 }
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100 public static boolean execute(final File source, final File destination, final boolean deleteSource, final int level)
101 throws IOException {
102 if (source.exists()) {
103 final FileInputStream fis = new FileInputStream(source);
104 final FileOutputStream fos = new FileOutputStream(destination);
105 final ZipOutputStream zos = new ZipOutputStream(fos);
106 zos.setLevel(level);
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108 final ZipEntry zipEntry = new ZipEntry(source.getName());
109 zos.putNextEntry(zipEntry);
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111 final byte[] inbuf = new byte[BUF_SIZE];
112 int n;
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114 while ((n = fis.read(inbuf)) != -1) {
115 zos.write(inbuf, 0, n);
116 }
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118 zos.close();
119 fis.close();
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121 if (deleteSource && !source.delete()) {
122 LOGGER.warn("Unable to delete " + source.toString() + '.');
123 }
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125 return true;
126 }
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128 return false;
129 }
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136 @Override
137 protected void reportException(final Exception ex) {
138 LOGGER.warn("Exception during compression of '" + source.toString() + "'.", ex);
139 }
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141 @Override
142 public String toString() {
143 return ZipCompressAction.class.getSimpleName() + '[' + source + " to " + destination
144 + ", level=" + level + ", deleteSource=" + deleteSource + ']';
145 }
146 }