solana_config_program/
lib.rs

1#![allow(clippy::arithmetic_side_effects)]
2pub mod config_instruction;
3pub mod config_processor;
4#[deprecated(
5    since = "2.0.0",
6    note = "The config program API no longer supports date instructions."
7)]
8pub mod date_instruction;
9
10pub use solana_sdk_ids::config::id;
11#[allow(deprecated)]
12use solana_stake_interface::config::Config as StakeConfig;
13use {
14    bincode::{deserialize, serialize, serialized_size},
15    serde_derive::{Deserialize, Serialize},
16    solana_account::{Account, AccountSharedData},
17    solana_pubkey::Pubkey,
18    solana_short_vec as short_vec,
19};
20
21pub trait ConfigState: serde::Serialize + Default {
22    /// Maximum space that the serialized representation will require
23    fn max_space() -> u64;
24}
25
26// TODO move ConfigState into `solana_program` to implement trait locally
27#[allow(deprecated)]
28impl ConfigState for StakeConfig {
29    fn max_space() -> u64 {
30        serialized_size(&StakeConfig::default()).unwrap()
31    }
32}
33
34/// A collection of keys to be stored in Config account data.
35#[derive(Debug, Default, Deserialize, Serialize)]
36pub struct ConfigKeys {
37    // Each key tuple comprises a unique `Pubkey` identifier,
38    // and `bool` whether that key is a signer of the data
39    #[serde(with = "short_vec")]
40    pub keys: Vec<(Pubkey, bool)>,
41}
42
43impl ConfigKeys {
44    pub fn serialized_size(keys: Vec<(Pubkey, bool)>) -> u64 {
45        serialized_size(&ConfigKeys { keys }).unwrap()
46    }
47}
48
49pub fn get_config_data(bytes: &[u8]) -> Result<&[u8], bincode::Error> {
50    deserialize::<ConfigKeys>(bytes)
51        .and_then(|keys| serialized_size(&keys))
52        .map(|offset| &bytes[offset as usize..])
53}
54
55// utility for pre-made Accounts
56pub fn create_config_account<T: ConfigState>(
57    keys: Vec<(Pubkey, bool)>,
58    config_data: &T,
59    lamports: u64,
60) -> AccountSharedData {
61    let mut data = serialize(&ConfigKeys { keys }).unwrap();
62    data.extend_from_slice(&serialize(config_data).unwrap());
63    AccountSharedData::from(Account {
64        lamports,
65        data,
66        owner: id(),
67        ..Account::default()
68    })
69}
solana_config_program/lib.rs

solana_config_program/
lib.rs
