protected Set<ContentEncoding> configureCompressionEncodings(Http http) {
final String mode = http.getCompression();
int compressionMinSize = Integer.parseInt(http.getCompressionMinSizeBytes());
CompressionLevel compressionLevel;
try {
compressionLevel = CompressionLevel.getCompressionLevel(mode);
} catch (IllegalArgumentException e) {
try {
// Try to parse compression as an int, which would give the
// minimum compression size
compressionLevel = CompressionLevel.ON;
compressionMinSize = Integer.parseInt(mode);
} catch (Exception ignore) {
compressionLevel = CompressionLevel.OFF;
}
}
final String compressableMimeTypesString = http.getCompressableMimeType();
final String noCompressionUserAgentsString = http.getNoCompressionUserAgents();
final String[] compressableMimeTypes =
((compressableMimeTypesString != null)
? compressableMimeTypesString.split(",")
: new String[0]);
final String[] noCompressionUserAgents =
((noCompressionUserAgentsString != null)
? noCompressionUserAgentsString.split(",")
: new String[0]);
final ContentEncoding gzipContentEncoding =
new GZipContentEncoding(
GZipContentEncoding.DEFAULT_IN_BUFFER_SIZE,
GZipContentEncoding.DEFAULT_OUT_BUFFER_SIZE,
new CompressionEncodingFilter(
compressionLevel,
compressionMinSize,
compressableMimeTypes,
noCompressionUserAgents,
GZipContentEncoding.getGzipAliases()));
final ContentEncoding lzmaEncoding =
new LZMAContentEncoding(
new CompressionEncodingFilter(
compressionLevel,
compressionMinSize,
compressableMimeTypes,
noCompressionUserAgents,
LZMAContentEncoding.getLzmaAliases()));
final Set<ContentEncoding> set = new HashSet<ContentEncoding>(2);
set.add(gzipContentEncoding);
set.add(lzmaEncoding);
return set;
}
