Examples with MastershipService org.onosproject.mastership.MastershipService used on opensource projects

Example 41 with MastershipService

use of org.onosproject.mastership.MastershipService in project onos by opennetworkinglab.

the class ServerControllerConfig method getControllers.

@Override
public List<ControllerInfo> getControllers() {
    List<ControllerInfo> controllers = Lists.newArrayList();
    DeviceId deviceId = getDeviceId();
    checkNotNull(deviceId, MSG_DEVICE_ID_NULL);
    MastershipService mastershipService = getHandler().get(MastershipService.class);
    checkNotNull(mastershipService, MSG_MASTERSHIP_NULL);
    if (!mastershipService.isLocalMaster(deviceId)) {
        log.warn("I am not master for {}. " + "Please use master {} to get controllers for this device", deviceId, mastershipService.getMasterFor(deviceId));
        return controllers;
    }
    // Hit the path that provides the server's controllers
    InputStream response = null;
    try {
        response = getController().get(deviceId, URL_CONTROLLERS_GET, JSON);
    } catch (ProcessingException pEx) {
        log.error("Failed to get controllers of device: {}", deviceId);
        return controllers;
    }
    // Load the JSON into objects
    ObjectMapper mapper = new ObjectMapper();
    Map<String, Object> jsonMap = null;
    JsonNode jsonNode = null;
    ObjectNode objNode = null;
    try {
        jsonMap = mapper.readValue(response, Map.class);
        jsonNode = mapper.convertValue(jsonMap, JsonNode.class);
        objNode = (ObjectNode) jsonNode;
    } catch (IOException ioEx) {
        log.error("Failed to get controllers of device: {}", deviceId);
        return controllers;
    }
    if (jsonMap == null) {
        log.error("Failed to get controllers of device: {}", deviceId);
        return controllers;
    }
    // Fetch controllers' array
    JsonNode ctrlNode = objNode.path(PARAM_CTRL);
    for (JsonNode cn : ctrlNode) {
        ObjectNode ctrlObjNode = (ObjectNode) cn;
        // Get the attributes of a controller
        String ctrlIpStr = get(cn, PARAM_CTRL_IP);
        int ctrlPort = ctrlObjNode.path(PARAM_CTRL_PORT).asInt();
        String ctrlType = get(cn, PARAM_CTRL_TYPE);
        // Implies no controller
        if (ctrlIpStr.isEmpty()) {
            continue;
        }
        // Check data format and range
        IpAddress ctrlIp = null;
        try {
            ctrlIp = IpAddress.valueOf(ctrlIpStr);
        } catch (IllegalArgumentException e) {
            throw new IllegalArgumentException(e);
        }
        if ((ctrlPort < 0) || (ctrlPort > TpPort.MAX_PORT)) {
            final String msg = "Invalid controller port: " + ctrlPort;
            throw new IllegalArgumentException(msg);
        }
        controllers.add(new ControllerInfo(ctrlIp, ctrlPort, ctrlType));
    }
    return controllers;
}