From 8640e476d1bd7e7339bf1490fd6079774210f5f3 Mon Sep 17 00:00:00 2001
From: anjor <anjor@umd.edu>
Date: Thu, 14 Nov 2024 10:41:02 -0700
Subject: [PATCH] impl

---
 grpc-server.go | 55 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)

diff --git a/grpc-server.go b/grpc-server.go
index d51832f1..d3c5e3d2 100644
--- a/grpc-server.go
+++ b/grpc-server.go
@@ -696,5 +696,60 @@ func blockContainsAccounts(block *old_faithful_grpc.BlockResponse, accounts []st
 	}
 
 	return false
+}
+
+func (multi *MultiEpoch) StreamTransactions(params *old_faithful_grpc.StreamTransactionsRequest, ser old_faithful_grpc.OldFaithful_StreamTransactionsServer) error {
+	ctx := ser.Context()
+
+	startSlot := params.StartSlot
+	endSlot := startSlot + maxSlotsToStream
+
+	if params.EndSlot != nil {
+		endSlot = *params.EndSlot
+	}
+
+	filterFunc := func(tx *old_faithful_grpc.Transaction) bool {
+		if params.Filter == nil || len(params.Filter.AccountInclude) == 0 {
+			return true
+		}
 
+		return txContainsAccounts(tx, params.Filter.AccountInclude)
+	}
+
+	for slot := startSlot; slot <= endSlot; slot++ {
+		select {
+		case <-ctx.Done():
+			return ctx.Err()
+		default:
+		}
+
+		block, err := multi.GetBlock(ctx, &old_faithful_grpc.BlockRequest{Slot: slot})
+		if err != nil {
+			if status.Code(err) == codes.NotFound {
+				continue // is this the right thing to do?
+			}
+			return err
+		}
+
+		for _, tx := range block.Transactions {
+			if filterFunc(tx) {
+				if err := ser.Send(constructTransactionResponse(tx)); err != nil {
+					return err
+				}
+			}
+		}
+	}
+
+	return nil
+}
+
+func txContainsAccounts(tx *old_faithful_grpc.Transaction, accounts []string) bool {
+	return true
+}
+
+func constructTransactionResponse(tx *old_faithful_grpc.Transaction) *old_faithful_grpc.TransactionResponse {
+	// to do
+	return &old_faithful_grpc.TransactionResponse{
+		Transaction: tx,
+	}
 }