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// Copyright (c) 2023 MASSA LABS <info@massa.net>
use crate::error::{match_for_io_error, GrpcError};
use crate::server::MassaPublicGrpc;
use futures_util::StreamExt;
use massa_models::operation::{OperationDeserializer, OperationType, SecureShareOperation};
use massa_models::secure_share::SecureShareDeserializer;
use massa_models::timeslots::get_latest_block_slot_at_timestamp;
use massa_proto_rs::massa::api::v1 as grpc_api;
use massa_proto_rs::massa::model::v1 as grpc_model;
use massa_serialization::{DeserializeError, Deserializer};
use massa_time::MassaTime;
use std::collections::HashMap;
use std::io::ErrorKind;
use std::pin::Pin;
use tracing::{error, warn};
/// Type declaration for SendOperations
pub type SendOperationsStreamType = Pin<
Box<
dyn futures_util::Stream<Item = Result<grpc_api::SendOperationsResponse, tonic::Status>>
+ Send
+ 'static,
>,
>;
/// This function takes a streaming request of operations messages,
/// verifies, saves and propagates the operations received in each message, and sends back a stream of
/// operations ids messages
pub(crate) async fn send_operations(
grpc: &MassaPublicGrpc,
request: tonic::Request<tonic::Streaming<grpc_api::SendOperationsRequest>>,
) -> Result<SendOperationsStreamType, GrpcError> {
let mut pool_controller = grpc.pool_controller.clone();
let protocol_controller = grpc.protocol_controller.clone();
let config = grpc.grpc_config.clone();
let storage = grpc.storage.clone_without_refs();
// Create a channel for sending responses to the client
let (tx, rx) = tokio::sync::mpsc::channel(config.max_channel_size);
// Extract the incoming stream of operations messages
let mut in_stream = request.into_inner();
// Spawn a task that reads incoming messages and processes the operations in each message
tokio::spawn(async move {
while let Some(result) = in_stream.next().await {
match result {
Ok(req_content) => {
// If the incoming message has no operations, send an error message back to the client
if req_content.operations.is_empty() {
report_error(
tx.clone(),
tonic::Code::InvalidArgument,
"the request payload is empty".to_owned(),
)
.await;
} else {
let now = MassaTime::now();
let Ok(last_slot) = get_latest_block_slot_at_timestamp(
config.thread_count,
config.t0,
config.genesis_timestamp,
now,
) else {
report_error(
tx.clone(),
tonic::Code::InvalidArgument,
"failed to get current period".to_owned(),
)
.await;
continue;
};
// If there are too many operations in the incoming message, send an error message back to the client
if req_content.operations.len() as u32 > config.max_operations_per_message {
report_error(
tx.clone(),
tonic::Code::InvalidArgument,
"too many operations per message".to_owned(),
)
.await;
} else {
// Deserialize and verify each operation in the incoming message
let operation_deserializer = SecureShareDeserializer::new(
OperationDeserializer::new(
config.max_datastore_value_length,
config.max_function_name_length,
config.max_parameter_size,
config.max_op_datastore_entry_count,
config.max_op_datastore_key_length,
config.max_op_datastore_value_length,
),
config.chain_id,
);
let verified_ops_res: Result<HashMap<String, SecureShareOperation>, GrpcError> = req_content.operations
.into_iter()
.map(|proto_operation| {
// Deserialize the operation and verify its signature
let verified_op_res = match operation_deserializer.deserialize::<DeserializeError>(&proto_operation) {
Ok(tuple) => {
let (rest, res_operation): (&[u8], SecureShareOperation) = tuple;
match res_operation.content.op {
OperationType::CallSC { max_gas, .. } | OperationType::ExecuteSC { max_gas, .. } => {
if max_gas > config.max_gas_per_block {
return Err(GrpcError::InvalidArgument("Gas limit of the operation is higher than the block gas limit. Your operation will never be included in a block.".into()));
}
},
_ => {}
};
if let Some(slot) = last_slot {
if res_operation.content.expire_period < slot.period {
return Err(GrpcError::InvalidArgument("Operation expire_period is lower than the current period of this node. Your operation will never be included in a block.".into()));
}
}
if res_operation.content.fee.checked_sub(config.minimal_fees).is_none() {
return Err(GrpcError::InvalidArgument("Operation fee is lower than the minimal fee. Your operation will never be included in a block.".into()));
}
if rest.is_empty() {
res_operation.verify_signature()
.map(|_| (res_operation.id.to_string(), res_operation))
.map_err(|e| e.into())
} else {
Err(GrpcError::InternalServerError(
"there is data left after operation deserialization".to_owned()
))
}
}
Err(e) => {
Err(GrpcError::InternalServerError(format!("failed to deserialize operation: {}", e)))
}
};
verified_op_res
})
.collect();
match verified_ops_res {
// If all operations in the incoming message are valid, store and propagate them
Ok(verified_ops) => {
let mut operation_storage = storage.clone_without_refs();
operation_storage
.store_operations(verified_ops.values().cloned().collect());
// Add the received operations to the operations pool
pool_controller.add_operations(operation_storage.clone());
// Propagate the operations to the network
if let Err(e) =
protocol_controller.propagate_operations(operation_storage)
{
// If propagation failed, send an error message back to the client
let error =
format!("failed to propagate operations: {}", e);
report_error(
tx.clone(),
tonic::Code::Internal,
error.to_owned(),
)
.await;
};
// Build the response message
let result = grpc_model::OperationIds {
operation_ids: verified_ops.keys().cloned().collect(),
};
// Send the response message back to the client
if let Err(e) = tx
.send(Ok(grpc_api::SendOperationsResponse {
result: Some(
grpc_api::send_operations_response::Result::OperationIds(
result,
),
),
}))
.await
{
error!("failed to send back operations response: {}", e);
};
}
// If the verification failed, send an error message back to the client
Err(e) => {
let error = format!("invalid operation(s): {}", e);
report_error(
tx.clone(),
tonic::Code::InvalidArgument,
error.to_owned(),
)
.await;
}
}
}
}
}
// Handle any errors that may occur during receiving the data
Err(err) => {
// Check if the error matches any IO errors
if let Some(io_err) = match_for_io_error(&err) {
if io_err.kind() == ErrorKind::BrokenPipe {
warn!("client disconnected, broken pipe: {}", io_err);
break;
}
}
error!("{}", err);
// Send the error response back to the client
if let Err(e) = tx.send(Err(err)).await {
error!("failed to send back send_operations error response: {}", e);
break;
}
}
}
}
});
let out_stream = tokio_stream::wrappers::ReceiverStream::new(rx);
Ok(Box::pin(out_stream) as SendOperationsStreamType)
}
// This function reports an error to the sender by sending a gRPC response message to the client
async fn report_error(
sender: tokio::sync::mpsc::Sender<Result<grpc_api::SendOperationsResponse, tonic::Status>>,
code: tonic::Code,
error: String,
) {
error!("{}", error);
// Attempt to send the error response message to the sender
if let Err(e) = sender
.send(Ok(grpc_api::SendOperationsResponse {
result: Some(grpc_api::send_operations_response::Result::Error(
grpc_model::Error {
code: code.into(),
message: error,
},
)),
}))
.await
{
// If sending the message fails, log the error message
error!("failed to send back send_operations error response: {}", e);
}
}