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SYMMETRICDS-91 - Added support to tweak compression settings for gzip…
… outputstreams
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91 changes: 91 additions & 0 deletions
91
symmetric/src/test/java/org/jumpmind/symmetric/test/CompressionExperiment.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,91 @@ | ||
| package org.jumpmind.symmetric.test; | ||
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|
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| import java.io.File; | ||
| import java.io.FileInputStream; | ||
| import java.io.FileOutputStream; | ||
| import java.io.IOException; | ||
| import java.io.OutputStream; | ||
| import java.util.zip.Deflater; | ||
| import java.util.zip.GZIPInputStream; | ||
| import java.util.zip.GZIPOutputStream; | ||
|
|
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| import org.apache.commons.io.IOUtils; | ||
| import org.apache.commons.logging.Log; | ||
| import org.jumpmind.symmetric.io.GzipConfigurableOutputStream; | ||
| import org.junit.Assert; | ||
| import org.junit.Test; | ||
|
|
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| /** | ||
| * Quick little test ot see what type of compression gets the best results | ||
| */ | ||
| public class CompressionExperiment { | ||
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| Log logger = org.apache.commons.logging.LogFactory.getLog(getClass()); | ||
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| @Test | ||
| public void testCompression() throws IOException { | ||
| File csv = new File("/tmp/test.csv"); | ||
| if (csv.exists()) { | ||
| Assert.assertTrue(csv.exists()); | ||
| printFileSize(csv); | ||
| logger.info("Normal gzip"); | ||
| printFileSize(compress(csv, new IWrapCompression() { | ||
| public OutputStream wrap(OutputStream os) throws IOException { | ||
| return new GZIPOutputStream(os); | ||
| } | ||
| })); | ||
| logger.info("Buffered gzip"); | ||
| printFileSize(compress(csv, new IWrapCompression() { | ||
| public OutputStream wrap(OutputStream os) throws IOException { | ||
| return new GZIPOutputStream(os, 18192); | ||
| } | ||
| })); | ||
| logger.info("Max compress gzip orig"); | ||
| File max = compress(csv, new IWrapCompression() { | ||
| public OutputStream wrap(OutputStream os) throws IOException { | ||
| return new GZIPOutputStream(os, 18192) { | ||
| { | ||
| def.setLevel(Deflater.BEST_COMPRESSION); | ||
| def.setStrategy(Deflater.FILTERED); | ||
| } | ||
| }; | ||
| } | ||
| }); | ||
| printFileSize(max); | ||
| uncompress(max); | ||
| logger.info("Max compress gzip"); | ||
| max = compress(csv, new IWrapCompression() { | ||
| public OutputStream wrap(OutputStream os) throws IOException { | ||
| return new GzipConfigurableOutputStream(os, 18192, Deflater.BEST_COMPRESSION); | ||
| } | ||
| }); | ||
| printFileSize(max); | ||
| uncompress(max); | ||
| } | ||
|
|
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| } | ||
|
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| protected void printFileSize(File file) { | ||
| logger.info(file.getName() + " size is " + file.length() / 10000 + "kb"); | ||
| } | ||
|
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| protected void uncompress(File file) throws IOException { | ||
| GZIPInputStream is = new GZIPInputStream(new FileInputStream(file)); | ||
| IOUtils.readLines(is); | ||
| } | ||
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| protected File compress(File orig, IWrapCompression wrapper) throws IOException { | ||
| File compressed = File.createTempFile("test.", ".gz"); | ||
| FileOutputStream fos = new FileOutputStream(compressed); | ||
| OutputStream wos = wrapper.wrap(fos); | ||
| FileInputStream fis = new FileInputStream(orig); | ||
| IOUtils.copy(fis, wos); | ||
| IOUtils.closeQuietly(fis); | ||
| IOUtils.closeQuietly(wos); | ||
| return compressed; | ||
| } | ||
|
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| interface IWrapCompression { | ||
| public OutputStream wrap(OutputStream os) throws IOException; | ||
| } | ||
| } |
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