snarkos_cli/helpers/
dev.rs

1// Copyright (c) 2019-2025 Provable Inc.
2// This file is part of the snarkOS library.
3
4// Licensed under the Apache License, Version 2.0 (the "License");
5// you may not use this file except in compliance with the License.
6// You may obtain a copy of the License at:
7
8// http://www.apache.org/licenses/LICENSE-2.0
9
10// Unless required by applicable law or agreed to in writing, software
11// distributed under the License is distributed on an "AS IS" BASIS,
12// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13// See the License for the specific language governing permissions and
14// limitations under the License.
15
16use snarkos_node::{bft::MEMORY_POOL_PORT, router::DEFAULT_NODE_PORT};
17
18use snarkvm::{console::network::Network, prelude::PrivateKey};
19
20use anyhow::Result;
21use rand::SeedableRng;
22use rand_chacha::ChaChaRng;
23use std::net::{Ipv4Addr, SocketAddr, SocketAddrV4};
24
25/// The development mode RNG seed.
26pub const DEVELOPMENT_MODE_RNG_SEED: u64 = 1234567890u64;
27
28/// The development mode number of genesis committee members.
29pub const DEVELOPMENT_MODE_NUM_GENESIS_COMMITTEE_MEMBERS: u16 = 4;
30
31/// The number of validators a devnet client connects to by default.
32pub const DEVNET_NUM_VALIDATORS_PER_CLIENT: u16 = 2;
33
34/// Get the private key for a validator in development mode.
35pub fn get_development_key<N: Network>(index: u16) -> Result<PrivateKey<N>> {
36    // Sample the private key of this node.
37    // Initialize the (fixed) RNG.
38    let mut rng = ChaChaRng::seed_from_u64(DEVELOPMENT_MODE_RNG_SEED);
39    // Iterate through 'dev' address instances to match the account.
40    for _ in 0..index {
41        let _ = PrivateKey::<N>::new(&mut rng)?;
42    }
43
44    PrivateKey::<N>::new(&mut rng)
45}
46
47/// Returns the indicies of validators a particular devnet client will connect to.
48pub fn get_devnet_validators_for_client(dev: u16, num_validators: u16) -> Vec<u16> {
49    (0..DEVNET_NUM_VALIDATORS_PER_CLIENT).map(|i| (dev + i) % num_validators).collect()
50}
51
52/// Returns the gateway address a particular devnet validator will listen on.
53pub fn get_devnet_gateway_address_for_validator(dev: u16) -> SocketAddr {
54    SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::LOCALHOST, MEMORY_POOL_PORT + dev))
55}
56
57/// Returns the router address a particular devnet validator will list on.
58pub fn get_devnet_router_address_for_node(dev: u16) -> SocketAddr {
59    SocketAddr::V4(SocketAddrV4::new(Ipv4Addr::LOCALHOST, DEFAULT_NODE_PORT + dev))
60}
snarkos_cli/helpers/dev.rs

snarkos_cli/helpers/
dev.rs
