From f5e225eb21af530fd35932f6ab0e3cc11b672e96 Mon Sep 17 00:00:00 2001
From: Andrew Fitzgerald <apfitzge@gmail.com>
Date: Thu, 7 Nov 2024 14:08:00 -0600
Subject: [PATCH] RuntimeTransaction<SanitizedTransactionView>

---
 .../src/runtime_transaction.rs                |  1 +
 .../runtime_transaction/transaction_view.rs   | 62 +++++++++++++++++++
 2 files changed, 63 insertions(+)
 create mode 100644 runtime-transaction/src/runtime_transaction/transaction_view.rs

diff --git a/runtime-transaction/src/runtime_transaction.rs b/runtime-transaction/src/runtime_transaction.rs
index 4c94b1b3dce2df..07ed60f234e0a5 100644
--- a/runtime-transaction/src/runtime_transaction.rs
+++ b/runtime-transaction/src/runtime_transaction.rs
@@ -31,6 +31,7 @@ use {
 };
 
 mod sdk_transactions;
+mod transaction_view;
 
 #[cfg_attr(feature = "dev-context-only-utils", derive(Clone))]
 #[derive(Debug)]
diff --git a/runtime-transaction/src/runtime_transaction/transaction_view.rs b/runtime-transaction/src/runtime_transaction/transaction_view.rs
new file mode 100644
index 00000000000000..2931d638295c3f
--- /dev/null
+++ b/runtime-transaction/src/runtime_transaction/transaction_view.rs
@@ -0,0 +1,62 @@
+use {
+    super::{ComputeBudgetInstructionDetails, RuntimeTransaction},
+    crate::{
+        signature_details::get_precompile_signature_details, transaction_meta::TransactionMeta,
+    },
+    agave_transaction_view::{
+        transaction_data::TransactionData, transaction_version::TransactionVersion,
+        transaction_view::SanitizedTransactionView,
+    },
+    solana_sdk::{
+        message::{TransactionSignatureDetails, VersionedMessage},
+        simple_vote_transaction_checker::is_simple_vote_transaction_impl,
+        transaction::{MessageHash, Result},
+    },
+};
+
+fn is_simple_vote_transaction<D: TransactionData>(
+    transaction: &SanitizedTransactionView<D>,
+) -> bool {
+    let signatures = transaction.signatures();
+    let is_legacy_message = matches!(transaction.version(), TransactionVersion::Legacy);
+    let instruction_programs = transaction
+        .program_instructions_iter()
+        .map(|(program_id, _ix)| program_id);
+
+    is_simple_vote_transaction_impl(signatures, is_legacy_message, instruction_programs)
+}
+
+impl<D: TransactionData> RuntimeTransaction<SanitizedTransactionView<D>> {
+    pub fn try_from(
+        transaction: SanitizedTransactionView<D>,
+        message_hash: MessageHash,
+        is_simple_vote_tx: Option<bool>,
+    ) -> Result<Self> {
+        let message_hash = match message_hash {
+            MessageHash::Precomputed(hash) => hash,
+            MessageHash::Compute => VersionedMessage::hash_raw_message(transaction.message_data()),
+        };
+        let is_simple_vote_tx =
+            is_simple_vote_tx.unwrap_or_else(|| is_simple_vote_transaction(&transaction));
+
+        let precompile_signature_details =
+            get_precompile_signature_details(transaction.program_instructions_iter());
+        let signature_details = TransactionSignatureDetails::new(
+            u64::from(transaction.num_required_signatures()),
+            precompile_signature_details.num_secp256k1_instruction_signatures,
+            precompile_signature_details.num_ed25519_instruction_signatures,
+        );
+        let compute_budget_instruction_details =
+            ComputeBudgetInstructionDetails::try_from(transaction.program_instructions_iter())?;
+
+        Ok(Self {
+            transaction,
+            meta: TransactionMeta {
+                message_hash,
+                is_simple_vote_transaction: is_simple_vote_tx,
+                signature_details,
+                compute_budget_instruction_details,
+            },
+        })
+    }
+}