80 lines
1.8 KiB
Rust
80 lines
1.8 KiB
Rust
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#![allow(unused_variables)] // TODO(you): remove this lint after implementing this mod
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#![allow(dead_code)] // TODO(you): remove this lint after implementing this mod
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use std::ops::Bound;
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use anyhow::Result;
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use bytes::Bytes;
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use crossbeam_skiplist::SkipMap;
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use crate::iterators::impls::StorageIterator;
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use crate::table::SsTableBuilder;
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/// A basic mem-table based on crossbeam-skiplist
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pub struct MemTable {
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map: SkipMap<Bytes, Bytes>,
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}
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impl MemTable {
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/// Create a new mem-table.
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pub fn create() -> Self {
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unimplemented!()
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}
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/// Get a value by key.
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pub fn get(&self, key: &[u8]) -> Result<Option<Bytes>> {
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unimplemented!()
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}
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/// Put a key-value pair into the mem-table.
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pub fn put(&self, key: &[u8], value: &[u8]) -> Result<()> {
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unimplemented!()
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}
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/// Get an iterator over a range of keys.
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pub fn scan(&self, lower: Bound<&[u8]>, upper: Bound<&[u8]>) -> Result<MemTableIterator> {
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unimplemented!()
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}
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/// Flush the mem-table to SSTable.
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pub fn flush(&self, builder: &mut SsTableBuilder) -> Result<()> {
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unimplemented!()
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}
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}
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type SkipMapRangeIter<'a> =
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crossbeam_skiplist::map::Range<'a, Bytes, (Bound<Bytes>, Bound<Bytes>), Bytes, Bytes>;
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/// An iterator over a range of `SkipMap`.
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pub struct MemTableIterator<'a> {
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_phantom: std::marker::PhantomData<&'a ()>,
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}
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impl<'a> MemTableIterator<'a> {
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fn new(iter: SkipMapRangeIter<'a>) -> Self {
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unimplemented!()
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}
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}
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impl StorageIterator for MemTableIterator<'_> {
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fn value(&self) -> &[u8] {
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unimplemented!()
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}
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fn key(&self) -> &[u8] {
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unimplemented!()
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}
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fn is_valid(&self) -> bool {
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unimplemented!()
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}
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fn next(&mut self) -> Result<()> {
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unimplemented!()
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}
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}
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#[cfg(test)]
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#[path = "mem_table_test.rs"]
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mod tests;
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