1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52

// Copyright (c) The Diem Core Contributors
// SPDX-License-Identifier: Apache-2.0

// Copyright 2021 Conflux Foundation. All rights reserved.
// Conflux is free software and distributed under GNU General Public License.
// See http://www.gnu.org/licenses/

//! This module defines physical storage schema for LedgerInfoWithSignatures
//! structure.
//!
//! Serialized LedgerInfoWithSignatures identified by `epoch`.
//! ```text
//! |<---key--->|<---------------value------------->|
//! | epoch | ledger_info_with_signatures bytes |
//! ```
//!
//! `epoch` is serialized in big endian so that records in RocksDB will be in
//! order of their numeric value.

use crate::schema::COMMITTED_BLOCK_CF_NAME;
use anyhow::Result;
use diem_crypto::hash::HashValue;
use diem_types::committed_block::CommittedBlock;
use schemadb::{
    define_schema,
    schema::{KeyCodec, ValueCodec},
};

define_schema!(
    CommittedBlockSchema,
    HashValue, /* block id */
    CommittedBlock,
    COMMITTED_BLOCK_CF_NAME
);

impl KeyCodec<CommittedBlockSchema> for HashValue {
    fn encode_key(&self) -> Result<Vec<u8>> { Ok(self.to_vec()) }

    fn decode_key(data: &[u8]) -> Result<Self> {
        Self::from_slice(data).map_err(Into::into)
    }
}

impl ValueCodec<CommittedBlockSchema> for CommittedBlock {
    fn encode_value(&self) -> Result<Vec<u8>> {
        bcs::to_bytes(self).map_err(Into::into)
    }

    fn decode_value(data: &[u8]) -> Result<Self> {
        bcs::from_bytes(data).map_err(Into::into)
    }
}