java类io.reactivex.SingleSource的实例源码

public <R> SingleTransformer<? super R, ? extends R> composeSingle() {
    return new SingleTransformer<R, R>() {
        @Override
        public SingleSource<R> apply(@NonNull Single<R> upstream) {
            return upstream
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .retryWhen(new RetryWithDelay(maxRetry, todoBeforeRetry).forSingle)
                    .doOnSubscribe(new Consumer<Disposable>() {
                        @Override
                        public void accept(@NonNull Disposable disposable) throws Exception {
                            AbstractPresenter.this.addDisposable(disposable);
                        }
                    });
        }
    };
}

private Single<Location> getLocation(LocationRequest request) {
    if (!shouldRequestNewLocation()) {
        return Single.just(mLastLocation);
    }

    return mFusedLocation.getLocation(request)
            .doOnSuccess(new Consumer<Location>() {
                @Override
                public void accept(Location location) throws Exception {
                    setLocationCache(location);
                }
            })
            .timeout(LOCATION_REQUEST_TIMEOUT, TimeUnit.MILLISECONDS)
            .onErrorResumeNext(new Function<Throwable, SingleSource<? extends Location>>() {
                @Override
                public SingleSource<? extends Location> apply(Throwable e) throws Exception {
                    if (e instanceof TimeoutException && mLastLocation == null) {
                        return Single.error(new LocationTimeoutException());
                    } else if (mLastLocation == null) {
                        return Single.error(e);
                    } else {
                        return Single.just(mLastLocation);
                    }
                }
            });
}

public SingleResponseReceiver(ClientCall<?, RespT> call) {
  this.call = call;

  this.source = new SingleSource<RespT>() {
    @Override
    public void subscribe(SingleObserver<? super RespT> observer) {
      responseObserver = observer;

      // todo which disposable should be used here
      observer.onSubscribe(Disposables.disposed());

      // start call until response gets subscribed
      startCall();

      if (error != null) {
        responseObserver.onError(error);
        error = null;
      }
    }
  };
}

@Exclude
private Single<Integer> getCardCount(final String type) {
    return Single.defer(new Callable<SingleSource<? extends Integer>>() {
        @Override
        public SingleSource<? extends Integer> call() throws Exception {
            return new Single<Integer>() {
                @Override
                protected void subscribeActual(SingleObserver<? super Integer> observer) {
                    int count = 0;
                    for (String cardId : cardCount.keySet()) {
                        if (getCards().get(cardId).getType().equals(type)) {
                            count += cardCount.get(cardId);
                        }
                    }
                    observer.onSuccess(count);
                }
            };
        }
    });
}

/**
 * Applies the filtered text to the artist releases.
 *
 * @param upstream {@link Single} containing {@link ArtistRelease}s.
 * @return Filtered {@link Single} containing {@link ArtistRelease}s.
 */
@Override
public SingleSource<List<ArtistRelease>> apply(@NonNull Single<List<ArtistRelease>> upstream)
{
    return upstream.flattenAsObservable(releases ->
            releases)
            .filter(artistRelease ->
                    (artistRelease.getTitle().toLowerCase().contains(filterText)) ||
                            (artistRelease.getYear().toLowerCase().contains(filterText)))
            .toList();
}

@SuppressWarnings("unchecked")
@Override public <T> SingleTransformer<T, T> transformer() {
  return (SingleTransformer<T, T>) new SingleTransformer() {
    @Override public SingleSource apply(Single upstream) {
      return upstream.subscribeOn(Schedulers.trampoline())
          .observeOn(Schedulers.trampoline());
    }
  };
}

@SuppressWarnings("unchecked")
@Override public <T> SingleTransformer<T, T> transformer() {
  return (SingleTransformer<T, T>) new SingleTransformer() {
    @Override public SingleSource apply(Single upstream) {
      return upstream.subscribeOn(Schedulers.trampoline())
          .observeOn(Schedulers.trampoline());
    }
  };
}

public Single<List<Object>> getCategories() {
    return mApiService.forumCategories().flatMap(new Function<ForumCategory, SingleSource<? extends List<Object>>>() {
        @Override public SingleSource<? extends List<Object>> apply(ForumCategory forumCategory) {
            ArrayList<Object> items = new ArrayList<>();
            for (ForumCategory.Categories categories : forumCategory.response.categories) {
                items.add(categories.categoryName);
                for (ForumCategory.Forums forum : categories.forums) {
                    items.add(forum);
                }
            }
            return Single.just(items);
        }
    });
}

/**
 * NOTE: This throws a NoSuchElementException if the item is filtered out since a Single can't be empty, so the 
 * onError is called after onDestroy() when using Single().
 *
 * @param upstream
 * @return
 */
@Override
public SingleSource<T> apply(Single<T> upstream) {
    Single<T> transformedStream = upstream
            .cache() // Cache to replay emitted values to late subscriber
            .filter(filterIfDestroyedPredicate) // Filter to stop emitting items once LifecycleOwner is destroyed
            .toSingle();
    setReactiveType((R)transformedStream);

    return transformedStream;
}

private void loadData(final String searchTerm, final Location location, final int offsetValue) {

        progressbar.setVisibility(View.VISIBLE);

        // get the authentication token and find results
        AuthenticationTokenUtil.fetchAndUpdateAuthenticationToken(this)
                .flatMap(new Function<String, SingleSource<List<Business>>>() {
                    @Override
                    public SingleSource<List<Business>> apply(@NonNull String authenticationToken) throws Exception {
                        return SearchAPI.searchYelp(authenticationToken, searchTerm, location.getLatitude(), location.getLongitude(), offsetValue);
                    }
                })
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Consumer<List<Business>>() {
                               @Override
                               public void accept(@NonNull List<Business> businessList) throws Exception {
                                   progressbar.setVisibility(View.GONE);
                                   if (offsetValue == 0) {
                                       searchAdapter = new SearchAdapter(businessList, SearchActivity.this, SearchActivity.this);
                                       rvNearbyRestaurant.setAdapter(searchAdapter);
                                   } else {
                                       searchAdapter.addBusinessList(businessList);
                                       searchAdapter.notifyDataSetChanged();
                                   }
                               }
                           },
                        new Consumer<Throwable>() {
                            @Override
                            public void accept(@NonNull Throwable throwable) throws Exception {
                                progressbar.setVisibility(View.GONE);
                                Toast.makeText(SearchActivity.this, "Error " + throwable.getMessage(), Toast.LENGTH_LONG).show();
                            }
                        });
    }

private void loadRestaurantData(final String businessID, final double latitude, final double longitude) {

        progressbar.setVisibility(View.VISIBLE);

        AuthenticationTokenUtil.fetchAndUpdateAuthenticationToken(this)
                .flatMap(new Function<String, SingleSource<Business>>() {
                    @Override
                    public SingleSource<Business> apply(@io.reactivex.annotations.NonNull String authToken) throws Exception {
                        return BusinessDetailsAPI.getBusinessDetails(authToken, businessID, latitude, longitude);
                    }
                })
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Consumer<Business>() {
                               @Override
                               public void accept(@io.reactivex.annotations.NonNull Business business) throws Exception {
                                   progressbar.setVisibility(View.GONE);
                                   bindData(business);
                               }
                           }
                        , new Consumer<Throwable>() {
                            @Override
                            public void accept(@io.reactivex.annotations.NonNull Throwable throwable) throws Exception {
                                progressbar.setVisibility(View.GONE);
                                Toast.makeText(BusinessDetailsActivity.this, throwable.getMessage(), Toast.LENGTH_LONG).show();
                            }
                        });
    }

public  static <T> SingleTransformer<T, T> applyCommonSchedulersSingle() {
    return new SingleTransformer<T, T>() {
        @Override
        public SingleSource<T> apply(@NonNull Single<T> upstream) {
            return upstream.subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread());
        }
    };
}

/**
 * @param callable
 * @param <R>
 * @return
 */
@CheckReturnValue
@NonNull
public static <R> Single<R> single(@NonNull final Callable<Task<R>> callable) {
    return Single.fromCallable(callable).flatMap(new Function<Task<R>,
            SingleSource<? extends R>>() {
        @Override
        public SingleSource<? extends R> apply(Task<R> task) throws Exception {
            return single(task);
        }
    });
}

/**
 * Zwraca strefę czasową na podstawie podanej lokalizacji.
   @param location Lokalizacja - miasto, kraj, wieś.
 */
@Override
public Single<TimeZone> getTimeZoneByLocationName(String location) {
    return googleGeoApi.getCoordForLocation(location, GOOGLE_GEO_API_KEY)
            .flatMap(new Function<CoordResponse, SingleSource<? extends TimeZone>>() {
                @Override
                public SingleSource<? extends TimeZone> apply(@NonNull CoordResponse coordResponse) throws Exception {
                    String lat = coordResponse.results.get(0).geometry.location.lat.toString();
                    String lng = coordResponse.results.get(0).geometry.location.lng.toString();
                    return timeZoneDbApi.getTimeZone(lat, lng, TIME_ZONE_DB_API_KEY);
                }
            });
}

@Override public SingleSource<Optional<T>> apply(Single<DataSnapshot> upstream) {
  return upstream.map(new Function<DataSnapshot, Optional<T>>() {
    @Override public Optional<T> apply(DataSnapshot dataSnapshot) throws Exception {
      return Optional.of(dataSnapshot.getValue(clazz));
    }
  });
}

@Override public SingleSource<Optional<T>> apply(Single<DataSnapshot> upstream) {
  return upstream.map(new Function<DataSnapshot, Optional<T>>() {
    @Override public Optional<T> apply(DataSnapshot dataSnapshot) throws Exception {
      return Optional.of(dataSnapshot.getValue(typeIndicator));
    }
  });
}

/**
 * Recherche
 */
public Single<AllocineResponse> search(final String recherche, final List<String> filter, final int count, final int page) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.Q, "" + recherche.replace(" ", "+"),
                            AllocineService.FILTER, filter,
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends AllocineResponse>>() {
                @Override
                public SingleSource<? extends AllocineResponse> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.search(recherche, ServiceSecurity.applatir(filter), count, page, pair.first, pair.second);
                }
            })
            .compose(this.<AllocineResponse>retry());
}

/**
 * Recherche
 */
public Single<AllocineResponseSmall> searchSmall(final String recherche, final List<String> filter, final int count, final int page) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.Q, "" + recherche.replace(" ", "+"),
                            AllocineService.FILTER, filter,
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<AllocineResponseSmall>>() {
                @Override
                public SingleSource<AllocineResponseSmall> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.searchSmall(recherche, ServiceSecurity.applatir(filter), count, page, pair.first, pair.second);
                }
            })
            .compose(this.<AllocineResponseSmall>retry());
}

/**
 * Informations sur un film
 */
public Single<Movie> movie(final String idFilm, final Profile profile) {
    final String filter = FILTER_MOVIE;

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {

                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idFilm,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends Movie>>() {
                @Override
                public SingleSource<? extends Movie> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.movie(idFilm, profile.getValue(), filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, Movie>() {
                                @Override
                                public Movie apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getMovie();
                                }
                            });
                }
            })
            .compose(this.<Movie>retry());
}

/**
 * Informations sur un film
 */
public Single<Theater> theater(final String idCinema, final String profile, final String filter) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idCinema,
                            AllocineService.PROFILE, profile,
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends Theater>>() {
                @Override
                public SingleSource<? extends Theater> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.theater(idCinema, profile, filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, Theater>() {
                                @Override
                                public Theater apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getTheater();
                                }
                            });
                }
            })
            .compose(this.<Theater>retry());
}

/**
 * Informations sur une personne
 */
public Single<PersonFull> person(final String idPerson, final String profile, final String filter) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idPerson,
                            AllocineService.PROFILE, profile,
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<PersonFull>>() {
                @Override
                public SingleSource<PersonFull> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.person(idPerson, profile, filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, PersonFull>() {
                                @Override
                                public PersonFull apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getPerson();
                                }
                            });
                }
            })
            .compose(this.<PersonFull>retry());
}

/**
 * Filmographie d'une personne
 */
public Single<List<Participation>> filmography(final String idPerson, final String profile, final String filter) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.CODE, idPerson,
                            AllocineService.PROFILE, profile,
                            AllocineService.FILTER, filter
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<List<Participation>>>() {
                @Override
                public SingleSource<List<Participation>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.filmography(idPerson, profile, filter, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Participation>>() {
                                @Override
                                public List<Participation> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getPerson().getParticipation();
                                }
                            });
                }
            })
            .compose(this.<List<Participation>>retry());
}

public Single<List<Movie>> movieList(List<MovieListFilter> filter, final Profile profile, final MovieListOrder order, final int count, final int page) {
    final List<String> filterString = new ArrayList<>();
    for (MovieListFilter movieListFilter : filter) {
        filterString.add(movieListFilter.getValue());
    }

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(true,
                            AllocineService.FILTER, filterString,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.ORDER, order.getValue(),
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<Movie>>>() {
                @Override
                public SingleSource<? extends List<Movie>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.movieList(ServiceSecurity.applatir(filterString), profile.getValue(), order.getValue(), count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Movie>>() {
                                @Override
                                public List<Movie> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getMovie();
                                }
                            });
                }
            })
            .compose(this.<List<Movie>>retry());
}

public Single<List<PersonFull>> starsList(final List<PersonListFilter> filter, final Profile profile, final int count, final int page) {
    final List<String> filterString = new ArrayList<>();
    for (PersonListFilter movieListFilter : filter) {
        filterString.add(movieListFilter.getValue());
    }

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(true,
                            AllocineService.FILTER, filterString,
                            AllocineService.PROFILE, profile.getValue(),
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<PersonFull>>>() {
                @Override
                public SingleSource<? extends List<PersonFull>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.personList(ServiceSecurity.applatir(filterString), profile.getValue(), count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<PersonFull>>() {
                                @Override
                                public List<PersonFull> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getPerson();
                                }
                            });
                }
            })
            .compose(this.<List<PersonFull>>retry());
}

public Single<List<Theater>> theaterList(final String zip, final int count, final int page) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.ZIP, zip,
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<Theater>>>() {
                @Override
                public SingleSource<? extends List<Theater>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.theaterlist(zip, count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Theater>>() {
                                @Override
                                public List<Theater> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getTheater();
                                }
                            });
                }
            })
            .compose(this.<List<Theater>>retry());
}

public Single<List<Theater>> theaterList(final String lat, final String lng, final int radius, final int count, final int page) {
    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.LAT, lat,
                            AllocineService.LONG, lng,
                            AllocineService.RADIUS, "" + radius,
                            AllocineService.COUNT, "" + count,
                            AllocineService.PAGE, "" + page
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);


                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<? extends List<Theater>>>() {
                @Override
                public SingleSource<? extends List<Theater>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.theaterlist(lat, lng, radius, count, page, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Theater>>() {
                                @Override
                                public List<Theater> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getTheater();
                                }
                            });
                }
            })
            .compose(this.<List<Theater>>retry());
}

public Single<List<Media>> videoList(final String code, final int count) {
    final String subject = "movie:" + code;
    final String mediafmt = "mp4";

    return Single
            .create(new SingleOnSubscribe<Pair<String, String>>() {
                @Override
                public void subscribe(SingleEmitter<Pair<String, String>> e) throws Exception {
                    final String params = ServiceSecurity.construireParams(false,
                            AllocineService.SUBJECT, subject,
                            AllocineService.COUNT, "" + count,
                            AllocineService.MEDIAFMT, mediafmt
                    );

                    final String sed = ServiceSecurity.getSED();
                    final String sig = ServiceSecurity.getSIG(params, sed);

                    e.onSuccess(Pair.create(sed, sig));
                }
            })
            .flatMap(new Function<Pair<String, String>, SingleSource<List<Media>>>() {
                @Override
                public SingleSource<List<Media>> apply(Pair<String, String> pair) throws Exception {
                    return allocineService.videoList(subject, count, mediafmt, pair.first, pair.second)
                            .map(new Function<AllocineResponse, List<Media>>() {
                                @Override
                                public List<Media> apply(AllocineResponse allocineResponse) throws Exception {
                                    return allocineResponse.getFeed().getMedia();
                                }
                            });
                }
            })
            .compose(this.<List<Media>>retry());


}

private <T> SingleTransformer<T, T> retry() {
    return new SingleTransformer<T, T>() {
        @Override
        public SingleSource<T> apply(Single<T> upstream) {
            return upstream.retryWhen(new Function<Flowable<Throwable>, Publisher<Object>>() {

                private final int MAX_COUNT = 3;
                private int count = 0;

                private final int DELAY_SECOND = 10;

                @Override
                public Publisher<Object> apply(Flowable<Throwable> throwableFlowable) throws Exception {
                    return throwableFlowable.flatMap(new Function<Throwable, Publisher<?>>() {
                        @Override
                        public Publisher<?> apply(Throwable throwable) throws Exception {
                            if (count++ < MAX_COUNT && throwable instanceof HttpException) {
                                final HttpException httpException = (HttpException) throwable;
                                if (httpException.code() == 403) {
                                    return Flowable.timer(DELAY_SECOND, TimeUnit.SECONDS);
                                }
                            }
                            return Flowable.error(throwable);
                        }
                    });
                }
            });
        }
    };
}

public <R> SingleTransformer<? super R, ? extends R> compose() {
    return new SingleTransformer<R, R>() {
        @Override
        public SingleSource<R> apply(@NonNull Single<R> upstream) {
            return upstream
                    .subscribeOn(Schedulers.io())
                    .observeOn(AndroidSchedulers.mainThread())
                    .doOnSubscribe(AbstractPresenter.this::call);
        }
    };
}

@Override
public SingleSource<T> apply(Single<T> upstream) {
    Single<T> tObservable = upstream
            .observeOn(AndroidSchedulers.mainThread());
    if (provider == null) {
        return tObservable;
    }
    return tObservable.compose(RxLifecycleDelegate.<T>bindLifecycle(provider));
}