/// <exception cref="System.Exception"/>
public bool Call()
{
Compressor c = queue.Take();
CodecPool.ReturnCompressor(c);
return(c != null);
}
/// <exception cref="System.IO.IOException"/>
public virtual void TestGzipCodecWrite(bool useNative)
{
// Create a gzipped file using a compressor from the CodecPool,
// and try to read it back via the regular GZIPInputStream.
// Use native libs per the parameter
Configuration conf = new Configuration();
conf.SetBoolean(CommonConfigurationKeys.IoNativeLibAvailableKey, useNative);
if (useNative)
{
if (!ZlibFactory.IsNativeZlibLoaded(conf))
{
Log.Warn("testGzipCodecWrite skipped: native libs not loaded");
return;
}
}
else
{
NUnit.Framework.Assert.IsFalse("ZlibFactory is using native libs against request"
, ZlibFactory.IsNativeZlibLoaded(conf));
}
// Ensure that the CodecPool has a BuiltInZlibDeflater in it.
Compressor zlibCompressor = ZlibFactory.GetZlibCompressor(conf);
NUnit.Framework.Assert.IsNotNull("zlibCompressor is null!", zlibCompressor);
Assert.True("ZlibFactory returned unexpected deflator", useNative
? zlibCompressor is ZlibCompressor : zlibCompressor is BuiltInZlibDeflater);
CodecPool.ReturnCompressor(zlibCompressor);
// Create a GZIP text file via the Compressor interface.
CompressionCodecFactory ccf = new CompressionCodecFactory(conf);
CompressionCodec codec = ccf.GetCodec(new Path("foo.gz"));
Assert.True("Codec for .gz file is not GzipCodec", codec is GzipCodec
);
string msg = "This is the message we are going to compress.";
string tmpDir = Runtime.GetProperty("test.build.data", "/tmp/");
string fileName = new Path(new Path(tmpDir), "testGzipCodecWrite.txt.gz").ToString
();
BufferedWriter w = null;
Compressor gzipCompressor = CodecPool.GetCompressor(codec);
if (null != gzipCompressor)
{
// If it gives us back a Compressor, we should be able to use this
// to write files we can then read back with Java's gzip tools.
OutputStream os = new CompressorStream(new FileOutputStream(fileName), gzipCompressor
);
w = new BufferedWriter(new OutputStreamWriter(os));
w.Write(msg);
w.Close();
CodecPool.ReturnCompressor(gzipCompressor);
VerifyGzipFile(fileName, msg);
}
// Create a gzip text file via codec.getOutputStream().
w = new BufferedWriter(new OutputStreamWriter(codec.CreateOutputStream(new FileOutputStream
(fileName))));
w.Write(msg);
w.Close();
VerifyGzipFile(fileName, msg);
}
/// <exception cref="System.IO.IOException"/>
public override void Close()
{
Finish();
@out.Close();
if (trackedCompressor != null)
{
CodecPool.ReturnCompressor(trackedCompressor);
trackedCompressor = null;
}
}
public virtual void TestCompressorNotReturnSameInstance()
{
Compressor comp = CodecPool.GetCompressor(codec);
CodecPool.ReturnCompressor(comp);
CodecPool.ReturnCompressor(comp);
ICollection <Compressor> compressors = new HashSet <Compressor>();
for (int i = 0; i < 10; ++i)
{
compressors.AddItem(CodecPool.GetCompressor(codec));
}
Assert.Equal(10, compressors.Count);
foreach (Compressor compressor in compressors)
{
CodecPool.ReturnCompressor(compressor);
}
}
public virtual void TestCompressorPoolCounts()
{
// Get two compressors and return them
Compressor comp1 = CodecPool.GetCompressor(codec);
Compressor comp2 = CodecPool.GetCompressor(codec);
Assert.Equal(LeaseCountErr, 2, CodecPool.GetLeasedCompressorsCount
(codec));
CodecPool.ReturnCompressor(comp2);
Assert.Equal(LeaseCountErr, 1, CodecPool.GetLeasedCompressorsCount
(codec));
CodecPool.ReturnCompressor(comp1);
Assert.Equal(LeaseCountErr, 0, CodecPool.GetLeasedCompressorsCount
(codec));
CodecPool.ReturnCompressor(comp1);
Assert.Equal(LeaseCountErr, 0, CodecPool.GetLeasedCompressorsCount
(codec));
}
public virtual void TestCodecPoolGzipReuse()
{
Configuration conf = new Configuration();
conf.SetBoolean(CommonConfigurationKeys.IoNativeLibAvailableKey, true);
if (!ZlibFactory.IsNativeZlibLoaded(conf))
{
Log.Warn("testCodecPoolGzipReuse skipped: native libs not loaded");
return;
}
GzipCodec gzc = ReflectionUtils.NewInstance <GzipCodec>(conf);
DefaultCodec dfc = ReflectionUtils.NewInstance <DefaultCodec>(conf);
Compressor c1 = CodecPool.GetCompressor(gzc);
Compressor c2 = CodecPool.GetCompressor(dfc);
CodecPool.ReturnCompressor(c1);
CodecPool.ReturnCompressor(c2);
Assert.True("Got mismatched ZlibCompressor", c2 != CodecPool.GetCompressor
(gzc));
}
/// <exception cref="System.IO.IOException"/>
private static void GzipReinitTest(Configuration conf, CompressionCodec codec)
{
// Add codec to cache
ZlibFactory.SetCompressionLevel(conf, ZlibCompressor.CompressionLevel.BestCompression
);
ZlibFactory.SetCompressionStrategy(conf, ZlibCompressor.CompressionStrategy.DefaultStrategy
);
Compressor c1 = CodecPool.GetCompressor(codec);
CodecPool.ReturnCompressor(c1);
// reset compressor's compression level to perform no compression
ZlibFactory.SetCompressionLevel(conf, ZlibCompressor.CompressionLevel.NoCompression
);
Compressor c2 = CodecPool.GetCompressor(codec, conf);
// ensure same compressor placed earlier
Assert.True("Got mismatched ZlibCompressor", c1 == c2);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
CompressionOutputStream cos = null;
// write trivially compressable data
byte[] b = new byte[1 << 15];
Arrays.Fill(b, unchecked ((byte)43));
try
{
cos = codec.CreateOutputStream(bos, c2);
cos.Write(b);
}
finally
{
if (cos != null)
{
cos.Close();
}
CodecPool.ReturnCompressor(c2);
}
byte[] outbytes = bos.ToByteArray();
// verify data were not compressed
Assert.True("Compressed bytes contrary to configuration", outbytes
.Length >= b.Length);
}
/// <summary>Write infLen bytes (deflated) to file in test dir using codec.</summary>
/// <remarks>
/// Write infLen bytes (deflated) to file in test dir using codec.
/// Records are of the form
/// <i><b64 rand><i+i><b64 rand>
/// </remarks>
/// <exception cref="System.IO.IOException"/>
private static Path WriteSplitTestFile(FileSystem fs, Random rand, CompressionCodec
codec, long infLen)
{
int RecSize = 1024;
Path wd = new Path(new Path(Runtime.GetProperty("test.build.data", "/tmp")).MakeQualified
(fs), codec.GetType().Name);
Path file = new Path(wd, "test" + codec.GetDefaultExtension());
byte[] b = new byte[RecSize];
Base64 b64 = new Base64(0, null);
DataOutputStream fout = null;
Compressor cmp = CodecPool.GetCompressor(codec);
try
{
fout = new DataOutputStream(codec.CreateOutputStream(fs.Create(file, true), cmp));
DataOutputBuffer dob = new DataOutputBuffer(RecSize * 4 / 3 + 4);
int seq = 0;
while (infLen > 0)
{
rand.NextBytes(b);
byte[] b64enc = b64.Encode(b);
// ensures rand printable, no LF
dob.Reset();
dob.WriteInt(seq);
System.Array.Copy(dob.GetData(), 0, b64enc, 0, dob.GetLength());
fout.Write(b64enc);
fout.Write('\n');
++seq;
infLen -= b64enc.Length;
}
Log.Info("Wrote " + seq + " records to " + file);
}
finally
{
IOUtils.Cleanup(Log, fout);
CodecPool.ReturnCompressor(cmp);
}
return(file);
}
/// <summary>Create an output stream with a codec taken from the global CodecPool.</summary>
/// <param name="codec">The codec to use to create the output stream.</param>
/// <param name="conf">The configuration to use if we need to create a new codec.</param>
/// <param name="out">The output stream to wrap.</param>
/// <returns>The new output stream</returns>
/// <exception cref="System.IO.IOException"/>
internal static CompressionOutputStream CreateOutputStreamWithCodecPool(CompressionCodec
codec, Configuration conf, OutputStream @out)
{
Compressor compressor = CodecPool.GetCompressor(codec, conf);
CompressionOutputStream stream = null;
try
{
stream = codec.CreateOutputStream(@out, compressor);
}
finally
{
if (stream == null)
{
CodecPool.ReturnCompressor(compressor);
}
else
{
stream.SetTrackedCompressor(compressor);
}
}
return(stream);
}
