sablier_network_program/instructions/
pool_update.rs

1use {
2    crate::state::*,
3    anchor_lang::{
4        prelude::*,
5        system_program::{transfer, Transfer},
6    },
7    sablier_utils::account::AccountInfoExt,
8    std::mem::size_of,
9};
10
11#[derive(Accounts)]
12#[instruction(settings: PoolSettings)]
13pub struct PoolUpdate<'info> {
14    pub admin: Signer<'info>,
15
16    #[account(
17        address = Config::pubkey(),
18        has_one = admin
19    )]
20    pub config: AccountLoader<'info, Config>,
21
22    #[account(mut)]
23    pub payer: Signer<'info>,
24
25    #[account(mut, address = pool.pubkey())]
26    pub pool: Account<'info, Pool>,
27
28    pub system_program: Program<'info, System>,
29}
30
31pub fn handler(ctx: Context<PoolUpdate>, settings: PoolSettings) -> Result<()> {
32    // Get accounts
33    let payer = &ctx.accounts.payer;
34    let pool = &mut ctx.accounts.pool;
35    let system_program = &ctx.accounts.system_program;
36
37    // Update the pool settings
38    pool.update(&settings)?;
39
40    // Reallocate memory for the pool account
41    let data_len = 8 + size_of::<Pool>() + settings.size.checked_mul(size_of::<Pubkey>()).unwrap();
42    pool.realloc(data_len, false)?;
43
44    // If lamports are required to maintain rent-exemption, pay them
45    let minimum_rent = Rent::get()?.minimum_balance(data_len);
46    if minimum_rent > pool.get_lamports() {
47        transfer(
48            CpiContext::new(
49                system_program.to_account_info(),
50                Transfer {
51                    from: payer.to_account_info(),
52                    to: pool.to_account_info(),
53                },
54            ),
55            minimum_rent - pool.get_lamports(),
56        )?;
57    }
58
59    Ok(())
60}
sablier_network_program/instructions/pool_update.rs

sablier_network_program/instructions/
pool_update.rs
