LaserStream Clients

import { subscribe, CommitmentLevel, LaserstreamConfig, SubscribeRequest } from 'helius-laserstream';

async function streamTransactions() {
  const config: LaserstreamConfig = {
    apiKey: 'YOUR_API_KEY',
    endpoint: 'https://laserstream-mainnet-ewr.helius-rpc.com',
  };

  const request: SubscribeRequest = {
    transactions: {
      "jupiter-filter": { // user-defined label for this filter
        accountInclude: ['JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4'], // Jupiter Program
        accountExclude: [],
        accountRequired: [],
        vote: false,
        failed: false
      }
    },
    commitment: CommitmentLevel.CONFIRMED,
    accounts: {},
    slots: {},
    transactionsStatus: {},
    blocks: {},
    blocksMeta: {},
    entry: {},
    accountsDataSlice: []
  };

  // The SDK handles reconnection and replay automatically
  await subscribe(config, request, 
    async (data) => {
      console.log('New transaction:', data);
    }, 
    async (error) => {
      console.error('Error:', error);
    }
  );
}

streamTransactions().catch(console.error);

[dependencies]
helius-laserstream = "0.2"
tokio = { version = "1", features = ["full"] }

use futures::StreamExt;
use helius_laserstream::{
    grpc::{CommitmentLevel, SubscribeRequest, SubscribeRequestFilterTransactions},
    subscribe, LaserstreamConfig,
};

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let config = LaserstreamConfig {
        api_key: "YOUR_API_KEY".to_string(),
        endpoint: "https://laserstream-mainnet-ewr.helius-rpc.com".to_string(),
        ..Default::default()
    };

    let mut request = SubscribeRequest::default();
    request.transactions.insert(
        "jupiter-filter".to_string(),
        SubscribeRequestFilterTransactions {
            vote: Some(false),
            failed: Some(false),
            account_include: vec!["JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4".to_string()],
            ..Default::default()
        },
    );
    request.commitment = Some(CommitmentLevel::Confirmed as i32);

    let (stream, _handle) = subscribe(config, request);
    tokio::pin!(stream);

    while let Some(result) = stream.next().await {
        match result {
            Ok(data) => println!("New transaction: {:?}", data),
            Err(e) => eprintln!("Error: {:?}", e),
        }
    }

    Ok(())
}

go get github.com/helius-labs/laserstream-sdk/go

package main

import (
    "log"
    "os"
    "os/signal"
    "syscall"

    laserstream "github.com/helius-labs/laserstream-sdk/go"
    pb "github.com/helius-labs/laserstream-sdk/go/proto"
)

func main() {
    clientConfig := laserstream.LaserstreamConfig{
        APIKey:   "YOUR_API_KEY",
        Endpoint: "https://laserstream-mainnet-ewr.helius-rpc.com",
    }

    voteFilter := false
    failedFilter := false
    commitment := pb.CommitmentLevel_CONFIRMED

    subscriptionRequest := &pb.SubscribeRequest{
        Transactions: map[string]*pb.SubscribeRequestFilterTransactions{
            "jupiter-filter": {
                Vote:           &voteFilter,
                Failed:         &failedFilter,
                AccountInclude: []string{"JUP6LkbZbjS1jKKwapdHNy74zcZ3tLUZoi5QNyVTaV4"},
            },
        },
        Commitment: &commitment,
    }

    client := laserstream.NewClient(clientConfig)

    dataCallback := func(data *pb.SubscribeUpdate) {
        log.Printf("New transaction: %+v\n", data)
    }
    errorCallback := func(err error) {
        log.Printf("Error: %v", err)
    }

    if err := client.Subscribe(subscriptionRequest, dataCallback, errorCallback); err != nil {
        log.Fatalf("Failed to subscribe: %v", err)
    }

    sigChan := make(chan os.Signal, 1)
    signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
    <-sigChan
    client.Close()
}