聊聊PowerJob的AppInfoController

序

本文主要研究一下PowerJob的AppInfoController

AppInfoController

tech/powerjob/server/web/controller/AppInfoController.java

@RestController
@RequestMapping("/appInfo")
@RequiredArgsConstructor
public class AppInfoController {

    private final AppInfoService appInfoService;

    private final AppInfoRepository appInfoRepository;

    private static final int MAX_APP_NUM = 200;

    @PostMapping("/save")
    public ResultDTO<Void> saveAppInfo(@RequestBody ModifyAppInfoRequest req) {

        req.valid();
        AppInfoDO appInfoDO;

        Long id = req.getId();
        if (id == null) {
            appInfoDO = new AppInfoDO();
            appInfoDO.setGmtCreate(new Date());
        }else {
            appInfoDO = appInfoRepository.findById(id).orElseThrow(() -> new IllegalArgumentException("can't find appInfo by id:" + id));

            // 对比密码
            if (!Objects.equals(req.getOldPassword(), appInfoDO.getPassword())) {
                throw new PowerJobException("The password is incorrect.");
            }
        }
        BeanUtils.copyProperties(req, appInfoDO);
        appInfoDO.setGmtModified(new Date());

        appInfoRepository.saveAndFlush(appInfoDO);
        return ResultDTO.success(null);
    }

    @PostMapping("/assert")
    public ResultDTO<Long> assertApp(@RequestBody AppAssertRequest request) {
        return ResultDTO.success(appInfoService.assertApp(request.getAppName(), request.getPassword()));
    }

    @GetMapping("/delete")
    public ResultDTO<Void> deleteAppInfo(Long appId) {
        appInfoRepository.deleteById(appId);
        return ResultDTO.success(null);
    }

    @GetMapping("/list")
    public ResultDTO<List<AppInfoVO>> listAppInfo(@RequestParam(required = false) String condition) {
        List<AppInfoDO> result;
        Pageable limit = PageRequest.of(0, MAX_APP_NUM);
        if (StringUtils.isEmpty(condition)) {
            result = appInfoRepository.findAll(limit).getContent();
        }else {
            result = appInfoRepository.findByAppNameLike("%" + condition + "%", limit).getContent();
        }
        return ResultDTO.success(convert(result));
    }

    private static List<AppInfoVO> convert(List<AppInfoDO> data) {
        if (CollectionUtils.isEmpty(data)) {
            return Lists.newLinkedList();
        }
        return data.stream().map(appInfoDO -> {
            AppInfoVO appInfoVO = new AppInfoVO();
            BeanUtils.copyProperties(appInfoDO, appInfoVO);
            return appInfoVO;
        }).collect(Collectors.toList());
    }

    @Data
    private static class AppInfoVO {
        private Long id;
        private String appName;
    }

}

AppInfoController提供了save、assert、delete、list方法

AppInfoService

tech/powerjob/server/core/service/AppInfoService.java

public interface AppInfoService {
    Long assertApp(String appName, String password);
}

AppInfoService定义了assertApp方法

AppInfoServiceImpl

tech/powerjob/server/core/service/impl/AppInfoServiceImpl.java

@Service
@RequiredArgsConstructor
public class AppInfoServiceImpl implements AppInfoService {

    private final AppInfoRepository appInfoRepository;

    /**
     * 验证应用访问权限
     * @param appName 应用名称
     * @param password 密码
     * @return 应用ID
     */
    @Override
    public Long assertApp(String appName, String password) {

        AppInfoDO appInfo = appInfoRepository.findByAppName(appName).orElseThrow(() -> new PowerJobException("can't find appInfo by appName: " + appName));
        if (Objects.equals(appInfo.getPassword(), password)) {
            return appInfo.getId();
        }
        throw new PowerJobException("password error!");
    }
}

AppInfoServiceImpl实现了AppInfoService接口，其assertApp是根据appName找到AppInfoDO，然后对比password是否一致

小结

PowerJob的AppInfoController提供了注册、验证等接口，其中assert接口调用的是AppInfoService的assertApp方法，它根据appName找到AppInfoDO，然后对比password是否一致。