1 files changed, 0 insertions, 134 deletions
diff --git a/log_db/src/log_reader_forward.rs b/log_db/src/log_reader_forward.rs
deleted file mode 100644
index f3fc16c..0000000
--- a/log_db/src/log_reader_forward.rs
+++ /dev/null
@@ -1,134 +0,0 @@
-use super::*;
-
-pub struct ForwardLogReader {
-    metadata_reader: io::BufReader<fs::File>,
-    data_reader: io::BufReader<fs::File>,
-}
-
-pub struct ForwardLogReaderItem {
-    pub row: Row,
-    pub index: u64,
-}
-
-impl ForwardLogReader {
-    pub fn new(metadata_file: fs::File, data_file: fs::File) -> ForwardLogReader {
-        let mut ret = ForwardLogReader {
-            metadata_reader: io::BufReader::new(metadata_file),
-            data_reader: io::BufReader::new(data_file),
-        };
-
-        ret.metadata_reader
-            .seek(io::SeekFrom::Start(METADATA_FILE_HEADER_SIZE as u64))
-            .expect("Seek failed");
-
-        ret
-    }
-
-    pub fn new_with_index(
-        metadata_file: fs::File,
-        data_file: fs::File,
-        index: u64,
-    ) -> ForwardLogReader {
-        let mut ret = ForwardLogReader {
-            metadata_reader: io::BufReader::new(metadata_file),
-            data_reader: io::BufReader::new(data_file),
-        };
-
-        ret.metadata_reader
-            .seek(io::SeekFrom::Start(
-                METADATA_FILE_HEADER_SIZE as u64 + METADATA_ROW_LENGTH as u64 * index,
-            ))
-            .expect("Seek failed");
-
-        ret
-    }
-
-    fn read_record(&mut self) -> Result<Option<ForwardLogReaderItem>, io::Error> {
-        loop {
-            let pos = self.metadata_reader.stream_position()?;
-            let index = (pos - METADATA_FILE_HEADER_SIZE as u64) / METADATA_ROW_LENGTH as u64;
-
-            let mut metadata_entry_buf = vec![0; 16]; // 2x u64
-            if let Err(e) = self.metadata_reader.read_exact(&mut metadata_entry_buf) {
-                if e.kind() == io::ErrorKind::UnexpectedEof {
-                    return Ok(None);
-                } else {
-                    return Err(e);
-                }
-            }
-
-            // First u64 is the offset of the record in the data file, second is the length of the record
-            let entry_offset = u64::from_be_bytes(metadata_entry_buf[0..8].try_into().unwrap());
-            let entry_length = u64::from_be_bytes(metadata_entry_buf[8..16].try_into().unwrap());
-
-            if entry_offset == 0 && entry_length == 0 {
-                // This is an unused entry in the metadata file, skip
-                continue;
-            }
-
-            // Use .seek_relative instead of .seek to avoid dropping the BufReader internal buffer when
-            // the seek distance is small
-            let seek_distance = entry_offset as i64 - self.data_reader.stream_position()? as i64;
-            self.data_reader.seek_relative(seek_distance)?;
-
-            let mut result_buf = vec![0; entry_length as usize];
-            self.data_reader.read_exact(&mut result_buf)?;
-
-            let row = Row::deserialize(&result_buf);
-            return Ok(Some(ForwardLogReaderItem { row, index }));
-        }
-    }
-}
-
-impl Iterator for ForwardLogReader {
-    type Item = ForwardLogReaderItem;
-
-    fn next(&mut self) -> Option<Self::Item> {
-        self.read_record().unwrap_or_else(|err| {
-            panic!("Error reading record: {:?}", err);
-        })
-    }
-}
-
-#[cfg(test)]
-mod tests {
-    use ctor::ctor;
-    use env_logger;
-
-    use super::*;
-
-    #[ctor]
-    fn init_logger() {
-        let _ = env_logger::builder().is_test(true).try_init();
-    }
-
-    const TEST_RESOURCES_DIR: &str = "tests/resources";
-
-    #[test]
-    fn test_forward_log_reader_fixture_db1() {
-        let metadata_path = Path::new(TEST_RESOURCES_DIR).join("test_metadata_1");
-        let data_path = Path::new(TEST_RESOURCES_DIR).join("test_data_1");
-        let metadata_file = fs::OpenOptions::new()
-            .read(true)
-            .open(&metadata_path)
-            .expect("Failed to open metadata file");
-        let data_file = fs::OpenOptions::new()
-            .read(true)
-            .open(&data_path)
-            .expect("Failed to open data file");
-
-        let mut forward_log_reader = ForwardLogReader::new(metadata_file, data_file);
-
-        // There are two records in the log with "schema" with one field: Bytes
-
-        let ForwardLogReaderItem { row, index: _ } = forward_log_reader
-            .next()
-            .expect("Failed to read the first record");
-        assert!(match &row.values[..] {
-            [Value::Bytes(bytes)] => bytes.len() == 256,
-            _ => false,
-        });
-
-        assert!(forward_log_reader.next().is_none());
-    }
-}