Function server_get_status

src/proxy/HostStatus.cc:430–478

JSON-RPC method to retrieve host status information.

// JSON-RPC method to retrieve host status information.
swoc::Rv<YAML::Node>
server_get_status(std::string_view /* id ATS_UNUSED */, YAML::Node const &params)
{
  namespace err = rpc::handlers::errors;
  swoc::Rv<YAML::Node> resp;
  YAML::Node           statusList{YAML::NodeType::Sequence}, errorList{YAML::NodeType::Sequence};

  try {
    if (!params.IsNull() && params.size() > 0) { // returns host statuses for just the ones asked for.
      for (YAML::const_iterator it = params.begin(); it != params.end(); ++it) {
        YAML::Node   host{YAML::NodeType::Map};
        auto         name     = it->as<std::string>();
        HostStatRec *host_rec = nullptr;
        HostStatus  &hs       = HostStatus::instance();
        host_rec              = hs.getHostStatus(name);
        if (host_rec == nullptr) {
          Dbg(dbg_ctl_host_statuses, "no record for %s was found", name.c_str());
          errorList.push_back("no record for " + name + " was found");
          continue;
        } else {
          std::stringstream s;
          s << *host_rec;
          host[HOST_NAME_KEY] = name;
          host[STATUS_KEY]    = s.str();
          statusList.push_back(host);
          Dbg(dbg_ctl_host_statuses, "hostname: %s, status: %s", name.c_str(), s.str().c_str());
        }
      }
    } else { // return all host statuses.
      std::vector<HostStatuses> hostInfo;
      HostStatus               &hs = HostStatus::instance();
      hs.getAllHostStatuses(hostInfo);
      for (auto &h : hostInfo) {
        YAML::Node host{YAML::NodeType::Map};
        host[HOST_NAME_KEY] = h.hostname;
        host[STATUS_KEY]    = h.status;
        statusList.push_back(host);
      }
    }
  } catch (std::exception const &ex) {
    Dbg(dbg_ctl_host_statuses, "Got an error decoding the parameters: %s", ex.what());
    errorList.push_back("Error decoding parameters : " + std::string(ex.what()));
  }

  resp.result()[STATUS_LIST_KEY] = statusList;
  resp.result()[ERROR_LIST_KEY]  = errorList;

  return resp;
}

// JSON-RPC method to mark up or down a host.
swoc::Rv<YAML::Node>