1mod store;
2mod types;
3use std::{collections::{HashMap, BTreeMap, HashSet}, fs::File};
4use fides::BloomFilter;
5use std::marker::PhantomData;
6
7const TABLE_HEADER_SIZE: u64 = 25;
8const KEY_INDEX_SIZE: u64 = 56;
9
10#[derive(Debug)]
11pub struct Store<K,V> {
12 directory: String,
13 graves: HashSet<[u8;32]>,
14 tables: Vec<Table>,
15 logs_file: File,
16 values: HashMap<[u8;32], ValueObject<V>>,
17 cache_size: u64,
18 cache_limit: u64,
19 keys: BTreeMap<[u8;32], KeyObject>,
20 phantom: PhantomData<K>,
21}
22
23#[derive(Debug)]
24struct ValueObject<V> {
25 value: V,
26 value_size: usize,
27 value_log_position: u64,
28}
29
30#[derive(Debug)]
31struct KeyObject {
32 value_hash: [u8;32],
33 key_size: usize,
34 key_log_position: u64,
35}
36
37#[derive(Debug)]
38struct Table {
39 pub bloom_filter: BloomFilter,
40 pub key_count: u64,
41 pub level: u8,
42 pub name: String,
43 pub file_size: u64,
44 pub index_position: u64,
45 pub keys_position: u64,
46}