ysq
2f5a63ed55
Add Meteora DAMM V2 trading protocol with instruction builder, type definitions, and fixed_output_token_amount parameter for precise output control. Update all examples and documentation.
55 lines
1.7 KiB
Rust
55 lines
1.7 KiB
Rust
use crate::{
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common::SolanaRpcClient,
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instruction::utils::meteora_damm_v2_types::{pool_decode, Pool},
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};
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use anyhow::anyhow;
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use solana_sdk::pubkey::Pubkey;
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/// Constants used as seeds for deriving PDAs (Program Derived Addresses)
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pub mod seeds {
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pub const EVENT_AUTHORITY_SEED: &[u8] = b"__event_authority";
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}
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/// Constants related to program accounts and authorities
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pub mod accounts {
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use solana_sdk::{pubkey, pubkey::Pubkey};
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pub const AUTHORITY: Pubkey = pubkey!("HLnpSz9h2S4hiLQ43rnSD9XkcUThA7B8hQMKmDaiTLcC");
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pub const METEORA_DAMM_V2: Pubkey = pubkey!("cpamdpZCGKUy5JxQXB4dcpGPiikHawvSWAd6mEn1sGG");
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// META
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pub const METEORA_DAMM_V2_META: solana_sdk::instruction::AccountMeta =
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solana_sdk::instruction::AccountMeta {
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pubkey: METEORA_DAMM_V2,
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is_signer: false,
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is_writable: false,
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};
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pub const AUTHORITY_META: solana_sdk::instruction::AccountMeta =
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solana_sdk::instruction::AccountMeta {
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pubkey: AUTHORITY,
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is_signer: false,
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is_writable: false,
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};
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}
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pub const SWAP_DISCRIMINATOR: &[u8] = &[248, 198, 158, 145, 225, 117, 135, 200];
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pub async fn fetch_pool(
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rpc: &SolanaRpcClient,
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pool_address: &Pubkey,
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) -> Result<Pool, anyhow::Error> {
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let account = rpc.get_account(pool_address).await?;
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if account.owner != accounts::METEORA_DAMM_V2 {
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return Err(anyhow!("Account is not owned by Meteora Damm V2 program"));
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}
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let pool = pool_decode(&account.data[8..]).ok_or_else(|| anyhow!("Failed to decode pool"))?;
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Ok(pool)
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}
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#[inline]
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pub fn get_event_authority_pda() -> Pubkey {
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Pubkey::find_program_address(&[seeds::EVENT_AUTHORITY_SEED], &accounts::METEORA_DAMM_V2).0
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}
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