Method update

src/master/master.cpp:12967–12997

Try<Nothing> Slave::update(
    const SlaveInfo& _info,
    const string& _version,
    const vector<SlaveInfo::Capability>& _capabilities,
    const Resources& _checkpointedResources,
    const Option<UUID>& _resourceVersion)
{
  Try<Resources> resources = applyCheckpointedResources(
      _info.resources(),
      _checkpointedResources);

  // This should be validated during slave recovery.
  if (resources.isError()) {
    return Error(resources.error());
  }

  version = _version;
  capabilities = protobuf::slave::Capabilities(_capabilities);
  info = _info;
  checkpointedResources = _checkpointedResources;

  // There is a short window here where `totalResources` can have an old value,
  // but it should be relatively short because the agent will send
  // an `UpdateSlaveMessage` with the new total resources immediately after
  // reregistering in this case.
  totalResources = resources.get();

  resourceVersion = _resourceVersion;

  return Nothing();
}

} // namespace master {
} // namespace internal {