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User request status messages (#76)

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This commit is contained in:
Ravin Perera
2019-12-20 21:14:53 +05:30
committed by GitHub
parent d82ab8f626
commit e43cbc9326
5 changed files with 185 additions and 24 deletions
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70
src/cons/cons.cpp
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@@ -324,14 +324,20 @@ void verify_and_populate_candidate_user_inputs()
{
for (const auto &[pubkey, umsgs] : p.user_messages)
{
// Locate this user's socket session in case we need to send any status messages regarding user inputs.
sock::socket_session<usr::user_outbound_message> *session = usr::get_session_by_pubkey(pubkey);
// Populate user list with this user's pubkey.
ctx.candidate_users.emplace(pubkey);
// Collect valid inputs for this user.
std::unordered_map<std::string, candidate_user_input> valid_inputs;
// Keep track of total input length to verify against remaining balance.
// We only process inputs in the submitted order that can be satisfied with the remaining account balance.
size_t total_input_len = 0;
bool appbill_balance_exceeded = false;
for (const usr::user_submitted_message &umsg : umsgs)
{
const char *reject_reason = NULL;
const std::string sig_hash = crypto::get_hash(umsg.sig);
// Check for duplicate messages using hash of the signature.
@@ -348,32 +354,58 @@ void verify_and_populate_candidate_user_inputs()
// Ignore the input if our ledger has passed the input TTL.
if (maxledgerseqno > ctx.led_seq_no)
{
// Hash is prefixed with the nonce to support user-defined sort order.
std::string hash = std::move(nonce);
// Append the hash of the message signature to get the final hash.
hash.append(sig_hash);
if (!appbill_balance_exceeded)
{
// Hash is prefixed with the nonce to support user-defined sort order.
std::string hash = std::move(nonce);
// Append the hash of the message signature to get the final hash.
hash.append(sig_hash);
valid_inputs.try_emplace(
hash,
candidate_user_input(pubkey, std::move(input), maxledgerseqno));
// Keep checking the subtotal of inputs extracted so far with the appbill account balance.
total_input_len += input.length();
if (verify_appbill_check(pubkey, total_input_len))
{
ctx.candidate_user_inputs.try_emplace(
hash,
candidate_user_input(pubkey, std::move(input), maxledgerseqno));
}
else
{
// Abandon processing further inputs from this user when we find out
// an input cannot be processed with the account balance.
appbill_balance_exceeded = true;
reject_reason = jusrmsg::REASON_APPBILL_BALANCE_EXCEEDED;
}
}
else
{
reject_reason = jusrmsg::REASON_APPBILL_BALANCE_EXCEEDED;
}
}
else
{
LOG_DBG << "User message bad max ledger seq expired.";
reject_reason = jusrmsg::REASON_MAX_LEDGER_EXPIRED;
}
}
else
{
LOG_DBG << "User message bad signature.";
reject_reason = jusrmsg::REASON_BAD_SIG;
}
}
else
{
LOG_DBG << "Duplicate user message.";
reject_reason = jusrmsg::REASON_DUPLICATE_MSG;
}
usr::send_request_status_result(session,
reject_reason == NULL ? jusrmsg::STATUS_ACCEPTED : jusrmsg::STATUS_REJECTED,
reject_reason == NULL ? "" : reject_reason,
jusrmsg::MSGTYPE_CONTRACT_INPUT,
jusrmsg::origin_data_for_contract_input(umsg.sig));
}
// Verify the accumulated input length with app bill before adding to candidate inputs.
size_t total_input_len = 0;
for (const auto &[hash, cand_input] : valid_inputs)
total_input_len += cand_input.input.size();
if (verify_appbill_check(pubkey, total_input_len))
ctx.candidate_user_inputs.merge(valid_inputs);
// TODO: report back to the user if the inputs didn't make it into consensus due to some reason.
}
}
p2p::ctx.collected_msgs.nonunl_proposals.clear();