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use crate::TransactionContext;
use diem_client::{views::VMStatusView, BlockingClient};
use diem_management::error::Error;
use diem_types::{
account_address::AccountAddress, account_config, account_config::AccountResource,
account_state::AccountState, account_state_blob::AccountStateBlob,
transaction::SignedTransaction, validator_config::ValidatorConfigResource,
validator_info::ValidatorInfo,
};
use std::convert::TryFrom;
pub struct JsonRpcClientWrapper {
client: BlockingClient,
}
impl JsonRpcClientWrapper {
pub fn new(host: String) -> JsonRpcClientWrapper {
JsonRpcClientWrapper {
client: BlockingClient::new(host),
}
}
pub fn submit_transaction(
&self,
transaction: SignedTransaction,
) -> Result<TransactionContext, Error> {
self.client
.submit(&transaction)
.map_err(|e| Error::JsonRpcWriteError("transaction", e.to_string()))?;
Ok(TransactionContext::new(
transaction.sender(),
transaction.sequence_number(),
))
}
pub fn account_state(&self, account: AccountAddress) -> Result<AccountState, Error> {
let account_state = self
.client
.get_account_state_with_proof(account, None, None)
.map_err(|e| Error::JsonRpcReadError("account-state", e.to_string()))?
.into_inner();
let blob = account_state.blob.ok_or_else(|| {
Error::JsonRpcReadError("account-state", "No Validator set".to_string())
})?;
let account_state_blob = AccountStateBlob::from(
bcs::from_bytes::<Vec<u8>>(&blob)
.map_err(|e| Error::JsonRpcReadError("account-state", e.to_string()))?,
);
let account_state = AccountState::try_from(&account_state_blob)
.map_err(|e| Error::JsonRpcReadError("account-state", e.to_string()))?;
Ok(account_state)
}
pub fn validator_config(
&self,
account: AccountAddress,
) -> Result<ValidatorConfigResource, Error> {
resource(
"validator-config-resource",
self.account_state(account)?.get_validator_config_resource(),
)
}
pub fn validator_set(
&self,
account: Option<AccountAddress>,
) -> Result<Vec<ValidatorInfo>, Error> {
let validator_set_account = account_config::validator_set_address();
let validator_set = self
.account_state(validator_set_account)?
.get_validator_set();
match validator_set {
Ok(Some(validator_set)) => {
let mut validator_infos = vec![];
for validator_info in validator_set.payload().iter() {
if let Some(account) = account {
if validator_info.account_address() == &account {
validator_infos.push(validator_info.clone());
}
} else {
validator_infos.push(validator_info.clone());
}
}
if validator_infos.is_empty() {
return Err(Error::UnexpectedError(
"No validator sets were found!".to_string(),
));
}
Ok(validator_infos)
}
Ok(None) => Err(Error::JsonRpcReadError(
"validator-set",
"not present".to_string(),
)),
Err(e) => Err(Error::JsonRpcReadError("validator-set", e.to_string())),
}
}
pub fn account_resource(&self, account: AccountAddress) -> Result<AccountResource, Error> {
let account_state = self.account_state(account)?;
resource("account-resource", account_state.get_account_resource())
}
pub fn sequence_number(&self, account: AccountAddress) -> Result<u64, Error> {
Ok(self.account_resource(account)?.sequence_number())
}
pub fn transaction_status(
&self,
account: AccountAddress,
sequence_number: u64,
) -> Result<Option<VMStatusView>, Error> {
self.client
.get_account_transaction(account, sequence_number, false)
.map(|maybe_txn_status| maybe_txn_status.into_inner().map(|status| status.vm_status))
.map_err(|e| Error::JsonRpcReadError("transaction-status", e.to_string()))
}
}
fn resource<T>(
resource_name: &'static str,
maybe_resource: Result<Option<T>, anyhow::Error>,
) -> Result<T, Error> {
match maybe_resource {
Ok(Some(resource)) => Ok(resource),
Ok(None) => Err(Error::JsonRpcReadError(
resource_name,
"not present".to_string(),
)),
Err(e) => Err(Error::JsonRpcReadError(resource_name, e.to_string())),
}
}