Java examples

integration/UrSession.java

import com.sun.jna.ptr.PointerByReference;
import io.ur.sdk.Sdk;
import java.io.IOException;
import java.util.UUID;

public final class UrSession implements AutoCloseable {
  private Sdk.Handle manager, space, api;
  public Sdk.Device device;
  public UrSession() throws IOException { this(true); }
  public UrSession(boolean connect) throws IOException {
    String jwt = System.getenv("URNETWORK_CLIENT_JWT"),
           instance = System.getenv("URNETWORK_INSTANCE_ID");
    if (jwt == null || instance == null)
      throw new IOException("Set URNETWORK_CLIENT_JWT and a persistent " +
                            "URNETWORK_INSTANCE_ID; see README.md.");
    instance = UUID.fromString(instance).toString();
    try {
      manager =
          new Sdk.Handle(Sdk.raw.urnet_new_network_space_manager_no_storage());
      space = new Sdk.Handle(
          Sdk.raw.urnet_network_space_manager_update_network_space_values(
              manager.handle(),
              "{\"host_name\":\"ur.network\",\"env_name\":\"main\"}",
              "{\"migration_host_name\":\"bringyour.com\"}"));
      api = new Sdk.Handle(Sdk.raw.urnet_network_space_get_api(space.handle()));
      Sdk.raw.urnet_api_set_by_jwt(api.handle(), jwt);
      PointerByReference error = new PointerByReference();
      long handle = Sdk.raw.urnet_new_device_local_with_defaults(
          space.handle(), jwt, "JVM example", "jvm", "1", instance, (byte)0,
          error);
      String message = Sdk.takeString(error.getValue());
      if (message != null)
        throw new IOException(message);
      device = new Sdk.Device(handle);
      if (connect)
        Sdk.raw.urnet_device_set_connect_location(
            handle, "{\"connect_location_id\":{\"best_available\":true}}");
    } catch (Throwable error) {
      close();
      throw error;
    }
  }
  @Override
  public void close() {
    if (device != null) {
      device.close();
      device = null;
    }
    if (api != null) {
      api.close();
      api = null;
    }
    if (space != null) {
      space.close();
      space = null;
    }
    if (manager != null) {
      Sdk.raw.urnet_network_space_manager_close(manager.handle());
      manager.close();
      manager = null;
    }
  }
}