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use {
solana_client::{
rpc_client::RpcClient,
rpc_config::{RpcAccountInfoConfig, RpcProgramAccountsConfig},
rpc_filter::*,
},
solana_foundation_delegation_program_registry::state::{Participant, ParticipantState},
solana_sdk::{program_pack::Pack, pubkey::Pubkey},
std::collections::HashMap,
};
pub fn get_participants_with_state(
rpc_client: &RpcClient,
state: Option<ParticipantState>,
) -> Result<HashMap<Pubkey, Participant>, Box<dyn std::error::Error>> {
let accounts = rpc_client.get_program_accounts_with_config(
&solana_foundation_delegation_program_registry::id(),
RpcProgramAccountsConfig {
account_config: RpcAccountInfoConfig {
encoding: Some(solana_account_decoder::UiAccountEncoding::Base64Zstd),
commitment: Some(rpc_client.commitment()),
..RpcAccountInfoConfig::default()
},
filters: Some(vec![RpcFilterType::DataSize(
Participant::get_packed_len() as u64
)]),
..RpcProgramAccountsConfig::default()
},
)?;
Ok(accounts
.into_iter()
.filter_map(|(address, account)| {
Participant::unpack_from_slice(&account.data)
.ok()
.map(|p| (address, p))
})
.filter(|(_, p)| {
if let Some(ref state) = state {
return p.state == *state;
}
true
})
.collect())
}
pub fn get_participants(
rpc_client: &RpcClient,
) -> Result<HashMap<Pubkey, Participant>, Box<dyn std::error::Error>> {
get_participants_with_state(rpc_client, None)
}