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Extract common function RPC::readLimitField.

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This commit is contained in:
Tom Ritchford
2015-09-03 20:55:50 -04:00
committed by Edward Hennis
parent a65f692ab7
commit b2cf1e4c65
8 changed files with 61 additions and 123 deletions
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20
src/ripple/rpc/impl/Utilities.cpp
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@@ -20,6 +20,8 @@
#include <ripple/rpc/impl/Utilities.h>
#include <ripple/json/json_value.h>
#include <ripple/protocol/JsonFields.h>
#include <ripple/protocol/ErrorCodes.h>
#include <ripple/rpc/Context.h>
#include <boost/algorithm/string.hpp>
#include <boost/format.hpp>
@@ -94,5 +96,23 @@ injectSLE (Json::Value& jv,
}
}
boost::optional<Json::Value> readLimitField(
unsigned int& limit,
Tuning::LimitRange const& range,
Context const& context)
{
limit = range.rdefault;
if (auto const& jvLimit = context.params[jss::limit])
{
if (! (jvLimit.isUInt() || (jvLimit.isInt() && jvLimit.asInt() >= 0)))
return RPC::expected_field_error (jss::limit, "unsigned integer");
limit = jvLimit.asUInt();
if (context.role != Role::ADMIN)
limit = std::max(range.rmin, std::min(range.rmax, limit));
}
return boost::none;
}
} // ripple
} // RPC