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use crate::execution_correctness::ExecutionCorrectness;
use consensus_types::{block::Block, vote_proposal::VoteProposal};
use diem_crypto::{ed25519::Ed25519PrivateKey, traits::SigningKey, HashValue};
use diem_types::ledger_info::LedgerInfoWithSignatures;
use executor_types::{BlockExecutor, Error, StateComputeResult};
use serde::{Deserialize, Serialize};
use std::sync::Arc;
#[derive(Deserialize, Serialize)]
pub enum ExecutionCorrectnessInput {
CommittedBlockId,
Reset,
ExecuteBlock(Box<(Block, HashValue)>),
CommitBlocks(Box<(Vec<HashValue>, LedgerInfoWithSignatures)>),
}
pub struct SerializerService {
internal: Box<dyn BlockExecutor>,
prikey: Option<Ed25519PrivateKey>,
}
impl SerializerService {
pub fn new(internal: Box<dyn BlockExecutor>, prikey: Option<Ed25519PrivateKey>) -> Self {
Self { internal, prikey }
}
pub fn handle_message(&self, input_message: Vec<u8>) -> Result<Vec<u8>, Error> {
let input = bcs::from_bytes(&input_message)?;
let output = match input {
ExecutionCorrectnessInput::CommittedBlockId => {
bcs::to_bytes(&self.internal.committed_block_id())
}
ExecutionCorrectnessInput::Reset => bcs::to_bytes(&self.internal.reset()),
ExecutionCorrectnessInput::ExecuteBlock(block_with_parent_id) => bcs::to_bytes(
&self
.internal
.execute_block(
(
block_with_parent_id.0.id(),
block_with_parent_id.0.transactions_to_execute(),
),
block_with_parent_id.1,
)
.map(|mut result| {
if let Some(prikey) = self.prikey.as_ref() {
let vote_proposal = VoteProposal::new(
result.extension_proof(),
block_with_parent_id.0.clone(),
result.epoch_state().clone(),
);
let signature = prikey.sign(&vote_proposal);
result.set_signature(signature);
}
result
}),
),
ExecutionCorrectnessInput::CommitBlocks(blocks_with_li) => bcs::to_bytes(
&self
.internal
.commit_blocks(blocks_with_li.0, blocks_with_li.1),
),
};
Ok(output?)
}
}
pub struct SerializerClient {
service: Box<dyn TSerializerClient>,
}
impl SerializerClient {
pub fn new(serializer_service: Arc<SerializerService>) -> Self {
let service = Box::new(LocalService { serializer_service });
Self { service }
}
pub fn new_client(service: Box<dyn TSerializerClient>) -> Self {
Self { service }
}
fn request(&self, input: ExecutionCorrectnessInput) -> Result<Vec<u8>, Error> {
self.service.request(input)
}
}
impl ExecutionCorrectness for SerializerClient {
fn committed_block_id(&self) -> Result<HashValue, Error> {
let response = self.request(ExecutionCorrectnessInput::CommittedBlockId)?;
bcs::from_bytes(&response)?
}
fn reset(&self) -> Result<(), Error> {
let response = self.request(ExecutionCorrectnessInput::Reset)?;
bcs::from_bytes(&response)?
}
fn execute_block(
&self,
block: Block,
parent_block_id: HashValue,
) -> Result<StateComputeResult, Error> {
let response = self.request(ExecutionCorrectnessInput::ExecuteBlock(Box::new((
block,
parent_block_id,
))))?;
bcs::from_bytes(&response)?
}
fn commit_blocks(
&self,
block_ids: Vec<HashValue>,
ledger_info_with_sigs: LedgerInfoWithSignatures,
) -> Result<(), Error> {
let response = self.request(ExecutionCorrectnessInput::CommitBlocks(Box::new((
block_ids,
ledger_info_with_sigs,
))))?;
bcs::from_bytes(&response)?
}
}
pub trait TSerializerClient: Send + Sync {
fn request(&self, input: ExecutionCorrectnessInput) -> Result<Vec<u8>, Error>;
}
struct LocalService {
pub serializer_service: Arc<SerializerService>,
}
impl TSerializerClient for LocalService {
fn request(&self, input: ExecutionCorrectnessInput) -> Result<Vec<u8>, Error> {
let input_message = bcs::to_bytes(&input)?;
self.serializer_service.handle_message(input_message)
}
}