i copy some code of your project ,but has catch: contains a dependency cycle

[sungerk]

Error:(23, 20) 错误: org.sunger.net.injector.components.AppComponent.getRestDataSource() contains a dependency cycle:
org.sunger.net.injector.modules.AppModule.provideDataRepository(org.net.sunger.mode.model.RestDataSource restDataSource)
[parameter: org.net.sunger.mode.model.RestDataSource `restDataSource]

@Module                                                                                         
public final class AppModule {                                                                  

    private final MsApplication mAvengersApplication;                                           

    public AppModule(MsApplication avengersApplication) {                                       
        this.mAvengersApplication = avengersApplication;                                        
    }                                                                                           

    @Provides                                                                                   
    @Singleton                                                                                  
    MsApplication provideAvengersAppContext() {                                                 
        return mAvengersApplication;                                                            
    }                                                                                           

    @Provides                                                                                   
    @Named("executor_thread")                                                                   
    Scheduler provideExecutorThread() {                                                         
        return Schedulers.newThread();                                                          
    }                                                                                           

    @Provides                                                                                   
    @Named("ui_thread")                                                                         
    Scheduler provideUiThread() {                                                               
        return AndroidSchedulers.mainThread();                                                  
    }                                                                                           

    @Provides                                                                                   
    File provideCacheFile(){                                                                    
        return FileUtils.createDirs(ConfigConstants.RX_CACHE_DIR);                              
    }                                                                                           

    @Provides                                                                                   
    MsAuthorizer provideMsAuthorizer() {                                                        
        MsAuthorizer msAuthorizer = new MsAuthorizer();                                         
        OauthUserEntity userEntity = mAvengersApplication.getOauthUserEntity();                 
        if (userEntity != null) {                                                               
            msAuthorizer.setAccessToken(userEntity.getAccess_token());                          
        }                                                                                       
        return msAuthorizer;                                                                    
    }                                                                                           

    @Provides @Singleton                                                                        
    RestDataSource provideDataRepository(RestDataSource restDataSource) {                       
        return restDataSource;                                                                  
    }                                                                                           
}                                                                                               
                                                                                                `

@Singleton
@Component(modules = AppModule.class)
public interface AppComponent {
    MsApplication application();
    RestDataSource getRestDataSource();

    MsAuthorizer msAuthorizer();

    File getCacheDir();

    @Named("ui_thread")
    Scheduler uiThread();
    @Named("executor_thread") Scheduler executorThread();

}

public class RestDataSource {
    private static final int CONNECT_TIMEOUT_MILLIS = 30;
    private static final int READ_TIMEOUT_MILLIS = 30;
    private final CacheProviders cacheProviders;
    private RestApiService restApi;


    @Inject
    public RestDataSource(File cacheDir, MsAuthorizer msAuthorizer) {
        cacheProviders = new RxCache.Builder()
                .persistence(cacheDir)
                .using(CacheProviders.class);
        HttpLoggingInterceptor httpLoggingInterceptor = new HttpLoggingInterceptor();
        httpLoggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
        OkHttpClient okHttpClient = new OkHttpClient().newBuilder().
                connectTimeout(CONNECT_TIMEOUT_MILLIS, TimeUnit.SECONDS).
                readTimeout(READ_TIMEOUT_MILLIS, TimeUnit.SECONDS).addInterceptor(new MsInterceptor(msAuthorizer.getAccessToken())).
                addInterceptor(httpLoggingInterceptor).build();
        Retrofit retrofit = new Retrofit.Builder().baseUrl(Constants.BASE_URL).
                client(okHttpClient).
                addCallAdapterFactory(RxJavaCallAdapterFactory.create()).
                addConverterFactory(GsonConverterFactory.create()).build();
        restApi =retrofit.create(RestApiService.class);
    }

    public Observable<Reply<List<CategoryEntity>>> getCategory(final boolean update) {
        return cacheProviders.getCategory(restApi.getCategory(), new EvictProvider(update));
    }

}