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// Copyright 2017 Yahoo Holdings. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#include "rpcservice.h"
#include "rpcnetwork.h"
namespace mbus {
RPCService::RPCService(const Mirror &mirror, const string &pattern) :
_mirror(mirror),
_pattern(pattern),
_addressIdx(random()),
_addressGen(0),
_addressList()
{ }
RPCService::~RPCService() = default;
RPCServiceAddress::UP
RPCService::resolve()
{
if (_pattern.find("tcp/") == 0) {
size_t pos = _pattern.find_last_of('/');
if (pos != string::npos && pos < _pattern.size() - 1) {
auto ret = std::make_unique<RPCServiceAddress>(_pattern, _pattern.substr(0, pos));
if (!ret->isMalformed()) {
return ret;
}
}
} else {
if (_addressGen != _mirror.updates()) {
_addressGen = _mirror.updates();
_addressList = _mirror.lookup(_pattern);
}
if (!_addressList.empty()) {
_addressIdx = (_addressIdx + 1) % _addressList.size();
const AddressList::value_type &entry = _addressList[_addressIdx];
return std::make_unique<RPCServiceAddress>(entry.first, entry.second);
}
}
return RPCServiceAddress::UP();
}
} // namespace mbus
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