Add Puffin crate and CompressionCodec

Cargo.toml

@@ -23,6 +23,7 @@ members = [
     "crates/iceberg",
     "crates/integration_tests",
     "crates/integrations/*",
+    "crates/puffin",
     "crates/test_utils",
 ]
 exclude = ["bindings/python"]
@@ -98,3 +99,4 @@ uuid = { version = "1.6.1", features = ["v7"] }
 volo-thrift = "0.10"
 hive_metastore = "0.1"
 tera = "1"
+zstd = "0.13.2"

crates/puffin/Cargo.toml

@@ -0,0 +1,36 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements.  See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership.  The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License.  You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied.  See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+[package]
+name = "iceberg-puffin"
+version = { workspace = true }
+edition = { workspace = true }
+homepage = { workspace = true }
+rust-version = { workspace = true }
+
+categories = ["database"]
+description = "Apache Iceberg Puffin"
+repository = { workspace = true }
+license = { workspace = true }
+keywords = ["iceberg", "puffin"]
+
+[dependencies]
+iceberg = { workspace = true }
+zstd = { workspace = true }
+
+[dev-dependencies]
+tokio = { workspace = true }

crates/puffin/src/compression.rs

@@ -0,0 +1,120 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+use iceberg::{Error, ErrorKind, Result};
+
+#[derive(Debug, PartialEq, Eq, Clone, Copy, Default)]
+/// Data compression formats
+pub enum CompressionCodec {
+    #[default]
+    /// No compression
+    None,
+    /// LZ4 single compression frame with content size present
+    Lz4,
+    /// Zstandard single compression frame with content size present
+    Zstd,
+}
+
+impl CompressionCodec {
+    pub(crate) fn decompress(&self, bytes: Vec<u8>) -> Result<Vec<u8>> {
+        match self {
+            CompressionCodec::None => Ok(bytes),
+            CompressionCodec::Lz4 => Err(Error::new(
+                ErrorKind::FeatureUnsupported,
+                "LZ4 decompression is not supported currently",
+            )),
+            CompressionCodec::Zstd => {
+                let decompressed = zstd::stream::decode_all(&bytes[..])?;
+                Ok(decompressed)
+            }
+        }
+    }
+
+    pub(crate) fn compress(&self, bytes: Vec<u8>) -> Result<Vec<u8>> {
+        match self {
+            CompressionCodec::None => Ok(bytes),
+            CompressionCodec::Lz4 => Err(Error::new(
+                ErrorKind::FeatureUnsupported,
+                "LZ4 compression is not supported currently",
+            )),
+            CompressionCodec::Zstd => {
+                let writer = Vec::<u8>::new();
+                let mut encoder = zstd::stream::Encoder::new(writer, 3)?;
+                encoder.include_checksum(true)?;
+                encoder.set_pledged_src_size(Some(bytes.len().try_into()?))?;
+                std::io::copy(&mut &bytes[..], &mut encoder)?;
+                let compressed = encoder.finish()?;
+                Ok(compressed)
+            }
+        }
+    }
+
+    pub(crate) fn is_none(&self) -> bool {
+        matches!(self, CompressionCodec::None)
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::compression::CompressionCodec;
+
+    #[tokio::test]
+    async fn test_compression_codec_none() {
+        let compression_codec = CompressionCodec::None;
+        let bytes_vec = [0_u8; 100].to_vec();
+
+        let compressed = compression_codec.compress(bytes_vec.clone()).unwrap();
+        assert_eq!(bytes_vec, compressed);
+
+        let decompressed = compression_codec.decompress(compressed.clone()).unwrap();
+        assert_eq!(compressed, decompressed)
+    }
+
+    #[tokio::test]
+    async fn test_compression_codec_lz4() {
+        let compression_codec = CompressionCodec::Lz4;
+        let bytes_vec = [0_u8; 100].to_vec();
+
+        assert_eq!(
+            compression_codec
+                .compress(bytes_vec.clone())
+                .unwrap_err()
+                .to_string(),
+            "FeatureUnsupported => LZ4 compression is not supported currently",
+        );
+
+        assert_eq!(
+            compression_codec
+                .decompress(bytes_vec.clone())
+                .unwrap_err()
+                .to_string(),
+            "FeatureUnsupported => LZ4 decompression is not supported currently",
+        )
+    }
+
+    #[tokio::test]
+    async fn test_compression_codec_zstd() {
+        let compression_codec = CompressionCodec::Zstd;
+        let bytes_vec = [0_u8; 100].to_vec();
+
+        let compressed = compression_codec.compress(bytes_vec.clone()).unwrap();
+        assert!(compressed.len() < bytes_vec.len());
+
+        let decompressed = compression_codec.decompress(compressed.clone()).unwrap();
+        assert_eq!(decompressed, bytes_vec)
+    }
+}

crates/puffin/src/lib.rs

@@ -0,0 +1,25 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+//! Iceberg Puffin implementation.
+
+#![deny(missing_docs)]
+// Temporarily allowing this while crate is under active development
+#![allow(dead_code)]
+
+mod compression;
+pub use compression::CompressionCodec;