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request_handler.cpp
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#include <eosio/trace_api/request_handler.hpp>
#include <algorithm>
#include <fc/variant_object.hpp>
namespace {
using namespace eosio::trace_api;
std::string to_iso8601_datetime( const fc::time_point& t) {
return (std::string)t + "Z";
}
fc::variants process_authorizations(const std::vector<authorization_trace_v0>& authorizations, const yield_function& yield ) {
fc::variants result;
result.reserve(authorizations.size());
for ( const auto& a: authorizations) {
yield();
result.emplace_back(fc::mutable_variant_object()
("account", a.account.to_string())
("permission", a.permission.to_string())
);
}
return result;
}
template<typename ActionTrace>
fc::variants process_actions(const std::vector<ActionTrace>& actions, const data_handler_function & data_handler, const yield_function& yield ) {
fc::variants result;
result.reserve(actions.size());
// create a vector of indices to sort based on actions to avoid copies
std::vector<int> indices(actions.size());
std::iota(indices.begin(), indices.end(), 0);
std::sort(indices.begin(), indices.end(), [&actions](const int& lhs, const int& rhs) -> bool {
return actions.at(lhs).global_sequence < actions.at(rhs).global_sequence;
});
for ( int index : indices) {
yield();
const auto& a = actions.at(index);
auto common_mvo = fc::mutable_variant_object();
common_mvo("global_sequence", a.global_sequence)
("receiver", a.receiver.to_string())
("account", a.account.to_string())
("action", a.action.to_string())
("authorization", process_authorizations(a.authorization, yield))
("data", fc::to_hex(a.data.data(), a.data.size()));
auto action_variant = fc::mutable_variant_object();
if constexpr(std::is_same_v<ActionTrace, action_trace_v0>){
action_variant(std::move(common_mvo));
auto [params, return_data] = data_handler(a, yield);
if (!params.is_null()) {
action_variant("params", params);
}
}
else if constexpr(std::is_same_v<ActionTrace, action_trace_v1>){
action_variant(std::move(common_mvo));
action_variant("return_value", fc::to_hex(a.return_value.data(),a.return_value.size())) ;
auto [params, return_data] = data_handler(a, yield);
if (!params.is_null()) {
action_variant("params", params);
}
if(return_data.has_value()){
action_variant("return_data", *return_data);
}
}
result.emplace_back( std::move(action_variant) );
}
return result;
}
template<typename TransactionTrace>
fc::variants process_transactions(const std::vector<TransactionTrace>& transactions, const data_handler_function & data_handler, const yield_function& yield ) {
fc::variants result;
result.reserve(transactions.size());
for ( const auto& t: transactions) {
yield();
if constexpr(std::is_same_v<TransactionTrace, transaction_trace_v0>){
result.emplace_back(
fc::mutable_variant_object()
("id", t.id.str())
("actions", process_actions<action_trace_v0>(t.actions, data_handler, yield)));
} else {
auto common_mvo = fc::mutable_variant_object();
common_mvo("status", t.status)
("cpu_usage_us", t.cpu_usage_us)
("net_usage_words", t.net_usage_words)
("signatures", t.signatures)
("transaction_header", t.trx_header);
if constexpr(std::is_same_v<TransactionTrace, transaction_trace_v1>){
result.emplace_back(
fc::mutable_variant_object()
("id", t.id.str())
("actions", process_actions<action_trace_v0>(t.actions, data_handler, yield))
(std::move(common_mvo)));
}
else if constexpr(std::is_same_v<TransactionTrace, transaction_trace_v2>){
result.emplace_back(
fc::mutable_variant_object()
("id", t.id.str())
("block_num", t.block_num)
("block_time", t.block_time)
("producer_block_id", t.producer_block_id)
("actions", process_actions<action_trace_v1>(std::get<std::vector<action_trace_v1>>(t.actions), data_handler, yield))
(std::move(common_mvo)));
}
}
}
return result;
}
}
namespace eosio::trace_api::detail {
fc::variant response_formatter::process_block( const data_log_entry& trace, bool irreversible, const data_handler_function& data_handler, const yield_function& yield ) {
auto common_mvo = std::visit([&](auto&& arg) -> fc::mutable_variant_object {
return fc::mutable_variant_object()
("id", arg.id.str())
("number", arg.number )
("previous_id", arg.previous_id.str())
("status", irreversible ? "irreversible" : "pending" )
("timestamp", to_iso8601_datetime(arg.timestamp))
("producer", arg.producer.to_string());}, trace);
if (std::holds_alternative<block_trace_v0> (trace)){
auto& block_trace = std::get<block_trace_v0>(trace);
return fc::mutable_variant_object()
(std::move(common_mvo))
("transactions", process_transactions<transaction_trace_v0>(block_trace.transactions, data_handler, yield ));
}else if(std::holds_alternative<block_trace_v1>(trace)){
auto& block_trace = std::get<block_trace_v1>(trace);
return fc::mutable_variant_object()
(std::move(common_mvo))
("transaction_mroot", block_trace.transaction_mroot)
("action_mroot", block_trace.action_mroot)
("schedule_version", block_trace.schedule_version)
("transactions", process_transactions<transaction_trace_v1>( block_trace.transactions_v1, data_handler, yield )) ;
}else if(std::holds_alternative<block_trace_v2>(trace)){
auto& block_trace = std::get<block_trace_v2>(trace);
return fc::mutable_variant_object()
(std::move(common_mvo))
("transaction_mroot", block_trace.transaction_mroot)
("action_mroot", block_trace.action_mroot)
("schedule_version", block_trace.schedule_version)
("transactions", process_transactions( std::get<std::vector<transaction_trace_v2>>(block_trace.transactions), data_handler, yield )) ;
}else{
return fc::mutable_variant_object();
}
}
}