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//! Shredstream client wrapper
use std::collections::HashMap;
use tonic::transport::Channel;
use crate::{
shredstream_proto::{
shredstream_proxy_client::ShredstreamProxyClient, CommitmentLevel, SubscribeEntriesRequest,
SubscribeRequestFilterAccounts, SubscribeRequestFilterSlots,
SubscribeRequestFilterTransactions,
},
Result, SolanaStreamError,
};
/// A convenient wrapper around the Shredstream client
pub struct ShredstreamClient {
client: ShredstreamProxyClient<Channel>,
}
impl ShredstreamClient {
/// Create a new ShredstreamClient by connecting to the specified endpoint
///
/// # Arguments
/// * `endpoint` - The gRPC endpoint URL (e.g., "https://shreds-ams.erpc.global")
///
/// # Example
/// ```no_run
/// use solana_stream_sdk::ShredstreamClient;
///
/// #[tokio::main]
/// async fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let client = ShredstreamClient::connect("https://shreds-ams.erpc.global").await?;
/// Ok(())
/// }
/// ```
pub async fn connect(endpoint: impl AsRef<str>) -> Result<Self> {
let client = ShredstreamProxyClient::connect(endpoint.as_ref().to_string())
.await
.map_err(SolanaStreamError::Transport)?;
Ok(Self { client })
}
/// Subscribe to entries with the given filters
///
/// # Arguments
/// * `request` - The subscribe entries request
pub async fn subscribe_entries(
&mut self,
request: SubscribeEntriesRequest,
) -> Result<tonic::Streaming<crate::shredstream_proto::Entry>> {
let response = self
.client
.subscribe_entries(request)
.await
.map_err(SolanaStreamError::Status)?;
Ok(response.into_inner())
}
/// Create a simple entries subscription request with single account filter
///
/// # Arguments
/// * `account` - The account address to filter for
/// * `commitment` - The commitment level (optional, defaults to Processed)
///
/// # Example
/// ```no_run
/// use solana_stream_sdk::{CommitmentLevel, ShredstreamClient};
///
/// #[tokio::main]
/// async fn main() -> Result<(), Box<dyn std::error::Error>> {
/// let mut client = ShredstreamClient::connect("https://shreds-ams.erpc.global").await?;
/// let request = ShredstreamClient::create_entries_request_for_account(
/// "L1ocbjmuFUQDVwwUWi8HjXjg1RYEeN58qQx6iouAsGF",
/// Some(CommitmentLevel::Processed),
/// );
/// let mut stream = client.subscribe_entries(request).await?;
/// Ok(())
/// }
/// ```
pub fn create_entries_request_for_account(
account: impl AsRef<str>,
commitment: Option<CommitmentLevel>,
) -> SubscribeEntriesRequest {
let mut accounts = HashMap::new();
accounts.insert(
"".to_owned(),
SubscribeRequestFilterAccounts {
account: vec![account.as_ref().to_owned()],
owner: vec![],
filters: vec![],
nonempty_txn_signature: None,
},
);
let mut transactions = HashMap::new();
transactions.insert(
"".to_owned(),
SubscribeRequestFilterTransactions {
account_include: vec!["".to_owned()],
account_exclude: vec!["".to_owned()],
account_required: vec!["".to_owned()],
},
);
let mut slots = HashMap::new();
slots.insert(
"".to_owned(),
SubscribeRequestFilterSlots {
filter_by_commitment: Some(true),
interslot_updates: Some(false),
},
);
SubscribeEntriesRequest {
accounts,
transactions,
slots,
commitment: Some(commitment.unwrap_or(CommitmentLevel::Processed) as i32),
}
}
/// Create entries subscription request with multiple accounts, owners, and filters
pub fn create_entries_request_for_accounts(
accounts: Vec<String>,
owners: Vec<String>,
filters: Vec<crate::shredstream_proto::SubscribeRequestFilterAccountsFilter>,
commitment: Option<CommitmentLevel>,
) -> SubscribeEntriesRequest {
let mut account_filters = HashMap::new();
account_filters.insert(
"".to_owned(),
SubscribeRequestFilterAccounts {
account: accounts,
owner: owners,
filters,
nonempty_txn_signature: None,
},
);
let mut transactions = HashMap::new();
transactions.insert(
"".to_owned(),
SubscribeRequestFilterTransactions {
account_include: vec!["".to_owned()],
account_exclude: vec!["".to_owned()],
account_required: vec!["".to_owned()],
},
);
let mut slots = HashMap::new();
slots.insert(
"".to_owned(),
SubscribeRequestFilterSlots {
filter_by_commitment: Some(true),
interslot_updates: Some(false),
},
);
SubscribeEntriesRequest {
accounts: account_filters,
transactions,
slots,
commitment: Some(commitment.unwrap_or(CommitmentLevel::Processed) as i32),
}
}
/// Create an empty entries subscription request that can be customized
pub fn create_empty_entries_request() -> SubscribeEntriesRequest {
SubscribeEntriesRequest {
accounts: HashMap::new(),
transactions: HashMap::new(),
slots: HashMap::new(),
commitment: Some(CommitmentLevel::Processed as i32),
}
}
}