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Forward feature RPC (#1440)

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Fixes #1436 

This is a temporary implementation of the `feature` RPC that will always
return `noPermission` iff `vetoed` is set.
If `vetoed` isn't specified, Clio will always forward the request to
`rippled` instead.

In the future, #1131 will implement a Clio-native `feature` RPC. This
requires specific support from `libxrpl` side and that is not going to
be available till at least 2.2.1, hence the temporary forwarding.

It would be great to review the error message and code so that we pick
the right one from the start.

Co-authored-by: Sergey Kuznetsov <skuznetsov@ripple.com>
This commit is contained in:
Alex Kremer
2024-06-11 11:51:03 +02:00
committed by GitHub
parent 1125b09611
commit 42c970a2a3
8 changed files with 268 additions and 2 deletions
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82
src/rpc/handlers/Feature.cpp Normal file
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//------------------------------------------------------------------------------
/*
This file is part of clio: https://github.com/XRPLF/clio
Copyright (c) 2024, the clio developers.
Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#include "rpc/handlers/Feature.hpp"
#include "rpc/Errors.hpp"
#include "rpc/JS.hpp"
#include "rpc/common/MetaProcessors.hpp"
#include "rpc/common/Specs.hpp"
#include "rpc/common/Types.hpp"
#include "rpc/common/Validators.hpp"
#include <boost/json/conversion.hpp>
#include <boost/json/value.hpp>
#include <ripple/protocol/jss.h>
#include <cstdint>
#include <string>
namespace rpc {
FeatureHandler::Result
FeatureHandler::process([[maybe_unused]] FeatureHandler::Input input, [[maybe_unused]] Context const& ctx) const
{
// For now this handler only fires when "vetoed" is set in the request.
// This always leads to a `notSupported` error as we don't want anyone to be able to
return Output{};
}
RpcSpecConstRef
FeatureHandler::spec([[maybe_unused]] uint32_t apiVersion)
{
static RpcSpec const rpcSpec = {
{JS(feature), validation::Type<std::string>{}},
{JS(vetoed),
meta::WithCustomError{
validation::NotSupported{},
Status(RippledError::rpcNO_PERMISSION, "The admin portion of feature API is not available through Clio.")
}},
};
return rpcSpec;
}
void
tag_invoke(boost::json::value_from_tag, boost::json::value& jv, FeatureHandler::Output const& output)
{
using boost::json::value_from;
jv = {
{JS(validated), output.validated},
};
}
FeatureHandler::Input
tag_invoke(boost::json::value_to_tag<FeatureHandler::Input>, boost::json::value const& jv)
{
auto input = FeatureHandler::Input{};
auto const jsonObject = jv.as_object();
if (jsonObject.contains(JS(feature)))
input.feature = jv.at(JS(feature)).as_string();
return input;
}
} // namespace rpc