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add key abstraction and prepare for MVCC (#28)

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* add key abstraction and prepare for MVCC

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* a little bit type exercise

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* refactor tests

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* fix clippy warnings

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* refactor starter code

Signed-off-by: Alex Chi <iskyzh@gmail.com>

* final touch docs

Signed-off-by: Alex Chi <iskyzh@gmail.com>

---------

Signed-off-by: Alex Chi <iskyzh@gmail.com>
This commit is contained in:
Alex Chi Z
2024-01-25 10:59:08 +08:00
committed by GitHub
parent 2fefe3e505
commit a3a92359e1
42 changed files with 824 additions and 281 deletions
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53
mini-lsm/src/tests/week1_day3.rs
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@@ -2,39 +2,48 @@ use std::sync::Arc;
use bytes::Bytes;
use crate::block::{Block, BlockBuilder, BlockIterator};
use crate::{
block::{Block, BlockBuilder, BlockIterator},
key::{KeySlice, KeyVec},
};
#[test]
fn test_block_build_single_key() {
let mut builder = BlockBuilder::new(16);
assert!(builder.add(b"233", b"233333"));
assert!(builder.add(KeySlice::for_testing_from_slice_no_ts(b"233"), b"233333"));
builder.build();
}
#[test]
fn test_block_build_full() {
let mut builder = BlockBuilder::new(16);
assert!(builder.add(b"11", b"11"));
assert!(!builder.add(b"22", b"22"));
assert!(builder.add(KeySlice::for_testing_from_slice_no_ts(b"11"), b"11"));
assert!(!builder.add(KeySlice::for_testing_from_slice_no_ts(b"22"), b"22"));
builder.build();
}
#[test]
fn test_block_build_large_1() {
let mut builder = BlockBuilder::new(16);
assert!(builder.add(b"11", &b"1".repeat(100)));
assert!(builder.add(
KeySlice::for_testing_from_slice_no_ts(b"11"),
&b"1".repeat(100)
));
builder.build();
}
#[test]
fn test_block_build_large_2() {
let mut builder = BlockBuilder::new(16);
assert!(builder.add(b"11", b"1"));
assert!(!builder.add(b"11", &b"1".repeat(100)));
assert!(builder.add(KeySlice::for_testing_from_slice_no_ts(b"11"), b"1"));
assert!(!builder.add(
KeySlice::for_testing_from_slice_no_ts(b"11"),
&b"1".repeat(100)
));
}
fn key_of(idx: usize) -> Vec<u8> {
format!("key_{:03}", idx * 5).into_bytes()
fn key_of(idx: usize) -> KeyVec {
KeyVec::for_testing_from_vec_no_ts(format!("key_{:03}", idx * 5).into_bytes())
}
fn value_of(idx: usize) -> Vec<u8> {
@@ -50,7 +59,7 @@ fn generate_block() -> Block {
for idx in 0..num_of_keys() {
let key = key_of(idx);
let value = value_of(idx);
assert!(builder.add(&key[..], &value[..]));
assert!(builder.add(key.as_key_slice(), &value[..]));
}
builder.build()
}
@@ -88,11 +97,11 @@ fn test_block_iterator() {
let key = iter.key();
let value = iter.value();
assert_eq!(
key,
key_of(i),
key.for_testing_key_ref(),
key_of(i).for_testing_key_ref(),
"expected key: {:?}, actual key: {:?}",
as_bytes(&key_of(i)),
as_bytes(key)
as_bytes(key_of(i).for_testing_key_ref()),
as_bytes(key.for_testing_key_ref())
);
assert_eq!(
value,
@@ -110,17 +119,17 @@ fn test_block_iterator() {
#[test]
fn test_block_seek_key() {
let block = Arc::new(generate_block());
let mut iter = BlockIterator::create_and_seek_to_key(block, &key_of(0));
let mut iter = BlockIterator::create_and_seek_to_key(block, key_of(0).as_key_slice());
for offset in 1..=5 {
for i in 0..num_of_keys() {
let key = iter.key();
let value = iter.value();
assert_eq!(
key,
key_of(i),
key.for_testing_key_ref(),
key_of(i).for_testing_key_ref(),
"expected key: {:?}, actual key: {:?}",
as_bytes(&key_of(i)),
as_bytes(key)
as_bytes(key_of(i).for_testing_key_ref()),
as_bytes(key.for_testing_key_ref())
);
assert_eq!(
value,
@@ -129,8 +138,10 @@ fn test_block_seek_key() {
as_bytes(&value_of(i)),
as_bytes(value)
);
iter.seek_to_key(&format!("key_{:03}", i * 5 + offset).into_bytes());
iter.seek_to_key(KeySlice::for_testing_from_slice_no_ts(
&format!("key_{:03}", i * 5 + offset).into_bytes(),
));
}
iter.seek_to_key(b"k");
iter.seek_to_key(KeySlice::for_testing_from_slice_no_ts(b"k"));
}
}