Add zstd support to Compressor

Introduce zstandard compression using airlift aircompressor - a pure Java implementation.

2 files changed, 49 insertions, 0 deletions

diff --git a/vespajlib/src/test/java/com/yahoo/compress/CompressorTest.java b/vespajlib/src/test/java/com/yahoo/compress/CompressorTest.java
new file mode 100644
index 00000000000..0c6af48deb8
--- /dev/null
+++ b/vespajlib/src/test/java/com/yahoo/compress/CompressorTest.java
@@ -0,0 +1,27 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.compress;
+
+import org.junit.jupiter.api.Test;
+
+import java.util.Optional;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+/**
+ * @author bjorncs
+ */
+class CompressorTest {
+
+    @Test
+    void compresses_and_decompresses_input_using_zstd() {
+        byte[] inputData = "The quick brown fox jumps over the lazy dog".getBytes();
+        Compressor compressor = new Compressor(CompressionType.ZSTD);
+        Compressor.Compression compression = compressor.compress(CompressionType.ZSTD, inputData, Optional.empty());
+        assertEquals(inputData.length, compression.uncompressedSize());
+        byte[] compressedData = compression.data();
+        byte[] decompressedData = compressor.decompress(CompressionType.ZSTD, compressedData, 0, inputData.length, Optional.of(compressedData.length));
+        assertArrayEquals(inputData, decompressedData);
+    }
+
+}
diff --git a/vespajlib/src/test/java/com/yahoo/compress/ZstdCompressorTest.java b/vespajlib/src/test/java/com/yahoo/compress/ZstdCompressorTest.java
new file mode 100644
index 00000000000..837482a089a
--- /dev/null
+++ b/vespajlib/src/test/java/com/yahoo/compress/ZstdCompressorTest.java
@@ -0,0 +1,22 @@
+// Copyright Verizon Media. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.compress;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.assertArrayEquals;
+
+/**
+ * @author bjorncs
+ */
+class ZstdCompressorTest {
+
+    @Test
+    void compresses_and_decompresses_input() {
+        byte[] inputData = "The quick brown fox jumps over the lazy dog".getBytes();
+        ZstdCompressor compressor = new ZstdCompressor();
+        byte[] compressedData = compressor.compress(inputData, 0, inputData.length);
+        byte[] decompressedData = compressor.decompress(compressedData, 0, compressedData.length);
+        assertArrayEquals(inputData, decompressedData);
+    }
+
+}
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