chore: Rename compression directory to compression_engine

src/compression_engine/lz4.rs

@@ -0,0 +1,40 @@
+use anyhow::Result;
+use log::*;
+use std::fs::File;
+use std::io::{Read, Write};
+use std::path::PathBuf;
+
+use lz4_flex::frame::{FrameDecoder, FrameEncoder};
+
+use crate::compression::CompressionEngine;
+
+#[derive(Debug, Eq, PartialEq, Clone, Default)]
+pub struct CompressionEngineLZ4 {}
+
+impl CompressionEngineLZ4 {
+    pub fn new() -> CompressionEngineLZ4 {
+        CompressionEngineLZ4 {}
+    }
+}
+
+impl CompressionEngine for CompressionEngineLZ4 {
+    fn is_supported(&self) -> bool {
+        true
+    }
+
+    fn open(&self, file_path: PathBuf) -> Result<Box<dyn Read>> {
+        debug!("COMPRESSION: Opening {:?} using {:?}", file_path, *self);
+
+        let file = File::open(file_path)?;
+        Ok(Box::new(FrameDecoder::new(file)))
+    }
+
+    fn create(&self, file_path: PathBuf) -> Result<Box<dyn Write>> {
+        debug!("COMPRESSION: Writting to {:?} using {:?}", file_path, *self);
+
+        let file = File::create(file_path)?;
+        let lz4_write = FrameEncoder::new(file).auto_finish();
+
+        Ok(Box::new(lz4_write))
+    }
+}