checking tx queue

miner/src/lib.rs

@@ -105,6 +105,9 @@ pub trait MinerService : Send + Sync {
 	/// Submit `seal` as a valid solution for the header of `pow_hash`.
 	/// Will check the seal, but not actually insert the block into the chain.
 	fn submit_seal(&self, chain: &BlockChainClient, pow_hash: H256, seal: Vec<Bytes>) -> Result<(), Error>;
+
+	/// Query pending transactions for hash
+	fn transaction(&self, hash: &H256) -> Option<SignedTransaction>;
 }
 
 /// Mining status

miner/src/miner.rs

@@ -164,6 +164,11 @@ impl MinerService for Miner {
 		transaction_queue.pending_hashes()
 	}
 
+	fn transaction(&self, hash: &H256) -> Option<SignedTransaction> {
+		let queue = self.transaction_queue.lock().unwrap();
+		queue.find(hash)
+	}
+
 	fn update_sealing(&self, chain: &BlockChainClient) {
 		if self.sealing_enabled.load(atomic::Ordering::Relaxed) {
 			let current_no = chain.chain_info().best_block_number;

miner/src/transaction_queue.rs

@@ -504,6 +504,11 @@ impl TransactionQueue {
 			.collect()
 	}
 
+	/// Finds transaction in the queue by hash (if any)
+	pub fn find(&self, hash: &H256) -> Option<SignedTransaction> {
+		match self.by_hash.get(hash) { Some(transaction_ref) => Some(transaction_ref.transaction.clone()), None => None }
+	}
+
 	/// Removes all elements (in any state) from the queue
 	pub fn clear(&mut self) {
 		self.current.clear();

rpc/src/v1/impls/eth.rs

@@ -348,7 +348,13 @@ impl<C, S, A, M, EM> Eth for EthClient<C, S, A, M, EM>
 
 	fn transaction_by_hash(&self, params: Params) -> Result<Value, Error> {
 		from_params::<(H256,)>(params)
-			.and_then(|(hash,)| self.transaction(TransactionId::Hash(hash)))
+			.and_then(|(hash,)| {
+				let miner = take_weak!(self.miner);
+				match miner.transaction(&hash) {
+					Some(pending_tx) => to_value(&Transaction::from(pending_tx)),
+					None => self.transaction(TransactionId::Hash(hash))
+				}
+			})
 	}
 
 	fn transaction_by_block_hash_and_index(&self, params: Params) -> Result<Value, Error> {

rpc/src/v1/tests/helpers/miner_service.rs

@@ -73,6 +73,10 @@ impl MinerService for TestMinerService {
 		&self.latest_closed_block
 	}
 
+	fn transaction(&self, _hash: &H256) -> Option<SignedTransaction> {
+		unimplemented!();
+	}
+
 	/// Submit `seal` as a valid solution for the header of `pow_hash`.
 	/// Will check the seal, but not actually insert the block into the chain.
 	fn submit_seal(&self, _chain: &BlockChainClient, _pow_hash: H256, _seal: Vec<Bytes>) -> Result<(), Error> { unimplemented!(); }

rpc/src/v1/types/transaction.rs

@@ -15,7 +15,7 @@
 // along with Parity.  If not, see <http://www.gnu.org/licenses/>.
 
 use util::numbers::*;
-use ethcore::transaction::{LocalizedTransaction, Action};
+use ethcore::transaction::{LocalizedTransaction, Action, SignedTransaction};
 use v1::types::{Bytes, OptionalValue};
 
 #[derive(Debug, Default, Serialize)]
@@ -58,6 +58,27 @@ impl From<LocalizedTransaction> for Transaction {
 	}
 }
 
+impl From<SignedTransaction> for Transaction {
+	fn from(t: SignedTransaction) -> Transaction {
+		Transaction {
+			hash: t.hash(),
+			nonce: t.nonce,
+			block_hash: OptionalValue::Null,
+			block_number: OptionalValue::Null,
+			transaction_index: OptionalValue::Null,
+			from: t.sender().unwrap(),
+			to: match t.action {
+				Action::Create => OptionalValue::Null,
+				Action::Call(ref address) => OptionalValue::Value(address.clone())
+			},
+			value: t.value,
+			gas_price: t.gas_price,
+			gas: t.gas,
+			input: Bytes::new(t.data.clone())
+		}
+	}
+}
+
 #[cfg(test)]
 mod tests {
 	use super::*;