forest-filecoin 0.33.2

Rust Filecoin implementation.
Documentation 
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

// Copyright 2019-2026 ChainSafe Systems
// SPDX-License-Identifier: Apache-2.0, MIT

use super::DrandNetwork;
use crate::beacon::{Beacon, BeaconEntry};
use crate::shim::version::NetworkVersion;
use crate::utils::encoding::blake2b_256;
use byteorder::{BigEndian, ByteOrder};

#[derive(Default)]
pub struct MockBeacon {}

impl MockBeacon {
    fn entry_for_index(index: u64) -> BeaconEntry {
        let mut buf = [0; 8];
        BigEndian::write_u64(&mut buf, index);
        let rval = blake2b_256(&buf);
        BeaconEntry::new(index, rval.to_vec())
    }
}

impl Beacon for MockBeacon {
    fn network(&self) -> DrandNetwork {
        DrandNetwork::Mainnet
    }

    fn verify_entries<'a>(
        &self,
        entries: &'a [BeaconEntry],
        mut prev: &'a BeaconEntry,
    ) -> anyhow::Result<bool> {
        for curr in entries.iter() {
            let oe = Self::entry_for_index(prev.round());
            if oe.signature() != curr.signature() {
                return Ok(false);
            }

            prev = curr;
        }

        Ok(true)
    }

    async fn entry(&self, round: u64) -> anyhow::Result<BeaconEntry> {
        Ok(Self::entry_for_index(round))
    }

    fn max_beacon_round_for_epoch(&self, _network_version: NetworkVersion, fil_epoch: i64) -> u64 {
        fil_epoch as u64
    }
}