com.geotab.model.serialization.ControllerDeserializer Maven / Gradle / Ivy

Go to download
/*
 *
 * 2020 Copyright (C) Geotab Inc. All rights reserved.
 */

package com.geotab.model.serialization;

import static com.geotab.model.entity.controller.BrpFaultController.BRP_FAULT_CONTROLLER_ID;
import static com.geotab.model.entity.controller.GmcccFaultController.GMCC_FAULT_CONTROLLER_ID;
import static com.geotab.model.entity.controller.GoFaultController.GO_FAULT_CONTROLLER_ID;
import static com.geotab.model.entity.controller.LegacyFaultController.LEGACY_FAULT_CONTROLLER_ID;
import static com.geotab.model.entity.controller.NoController.NO_CONTROLLER_ID;
import static com.geotab.model.entity.controller.ProprietaryFaultController.PROPRIETARY_FAULT_CONTROLLER_ID;

import com.fasterxml.jackson.core.JsonParser;
import com.fasterxml.jackson.core.ObjectCodec;
import com.fasterxml.jackson.databind.DeserializationContext;
import com.fasterxml.jackson.databind.JsonDeserializer;
import com.fasterxml.jackson.databind.JsonNode;
import com.geotab.model.Id;
import com.geotab.model.entity.controller.BrpFaultController;
import com.geotab.model.entity.controller.Controller;
import com.geotab.model.entity.controller.GmcccFaultController;
import com.geotab.model.entity.controller.GoFaultController;
import com.geotab.model.entity.controller.LegacyFaultController;
import com.geotab.model.entity.controller.NoController;
import com.geotab.model.entity.controller.ProprietaryFaultController;
import com.geotab.model.entity.source.Source;
import java.io.IOException;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang3.StringUtils;

@Slf4j
public class ControllerDeserializer extends JsonDeserializer {

  @Override
  public Controller deserialize(JsonParser jsonParser, DeserializationContext context)
      throws IOException {
    ObjectCodec parserCodec = jsonParser.getCodec();
    JsonNode node = parserCodec.readTree(jsonParser);

    if (node.isTextual()) {
      String controllerId = node.textValue();
      Controller controller = buildSystemController(controllerId);
      if (StringUtils.isNotEmpty(controllerId) && controller == null) {
        log.warn("Unknown system controller with id {}. Creating a normal controller",
            controllerId);
        controller = Controller.builder()
            .id(controllerId)
            .name(controllerId)
            .version(-1L)
            .code((short) 0)
            .codeId((short) 0)
            .build();
      }
      return controller;
    } else if (node.isObject()) {
      Id id = node.get("id") != null ? parserCodec.treeToValue(node.get("id"), Id.class) : null;
      Controller controller = buildSystemController(id != null ? id.getId() : null);
      if (controller != null) {
        // update with the server version
        Long version =
            node.get("version") != null ? parserCodec.treeToValue(node.get("version"), Long.class)
                : null;
        controller.setVersion(version);
        return controller;
      }

      String name = node.get("name") != null ? node.get("name").textValue() : null;
      Long version =
          node.get("version") != null ? parserCodec.treeToValue(node.get("version"), Long.class)
              : null;
      Short code = node.get("code") != null ? node.get("code").shortValue() : null;
      Short codeId = node.get("codeId") != null ? node.get("codeId").shortValue() : null;
      Source source =
          node.get("source") != null ? parserCodec.treeToValue(node.get("source"), Source.class)
              : null;

      return Controller.builder()
          .id(id != null ? id.getId() : null)
          .name(name)
          .version(version)
          .code(code)
          .codeId(codeId)
          .source(source)
          .build();
    }

    return null;
  }

  private Controller buildSystemController(String id) {
    if (StringUtils.isEmpty(id)) {
      return null;
    }

    switch (id) {
      case BRP_FAULT_CONTROLLER_ID:
        return BrpFaultController.getInstance();
      case GMCC_FAULT_CONTROLLER_ID:
        return GmcccFaultController.getInstance();
      case GO_FAULT_CONTROLLER_ID:
        return GoFaultController.getInstance();
      case LEGACY_FAULT_CONTROLLER_ID:
        return LegacyFaultController.getInstance();
      case PROPRIETARY_FAULT_CONTROLLER_ID:
        return ProprietaryFaultController.getInstance();
      case NO_CONTROLLER_ID:
        return NoController.getInstance();
      default:
        return null;
    }
  }

}