Java Code Examples for reactor.core.publisher.Flux#doOnError()

The following examples show how to use reactor.core.publisher.Flux#doOnError() . These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: etherjar   File: ReactorHttpRpcClient.java    License: Apache License 2.0 6 votes vote down vote up
@Override
public Flux<RpcCallResponse> execute(ReactorBatch batch) {
    BatchCallContext<ReactorBatch.ReactorBatchItem> context = new BatchCallContext<>();

    Flux<RpcCallResponse> result = batch.getItems()
        .doOnNext(context::add)
        .thenMany(transport.execute(batch.getItems(), context))
        .onErrorResume(ConnectException.class, ReactorHandlers.catchConnectException())
        ;


    FailedBatchProcessor failedBatchProcessor = this.getFailedBatchProcessor();
    if (failedBatchProcessor != null) {
        Function<RpcException, Publisher<RpcCallResponse>> fallback = failedBatchProcessor.createFallback(batch);
        if (fallback != null) {
            result = result.onErrorResume(RpcException.class, fallback);
        }
    }

    result = postProcess(batch, context, result);

    result = result.doOnError((t) -> System.err.println("HTTP Error " + t.getClass() + ": " + t.getMessage()));

    return result.share();
}
 
Example 2
Source Project: tutorials   File: FooService.java    License: MIT License 5 votes vote down vote up
public void processFoo(Flux<Foo> flux) {
    flux = FooNameHelper.concatFooName(flux);
    flux = FooNameHelper.substringFooName(flux);
    flux = flux.log();
    flux = FooReporter.reportResult(flux);
    flux = flux.doOnError(error -> {
        logger.error("The following error happened on processFoo method!", error);
    });
    flux.subscribe();
}
 
Example 3
Source Project: tutorials   File: FooService.java    License: MIT License 5 votes vote down vote up
public void processUsingApproachOneWithErrorHandling(Flux<Foo> flux) {
    logger.info("starting approach one w error handling!");
    flux = concatAndSubstringFooName(flux);
    flux = concatAndSubstringFooName(flux);
    flux = substringFooName(flux);
    flux = processFooReducingQuantity(flux);
    flux = processFooReducingQuantity(flux);
    flux = processFooReducingQuantity(flux);
    flux = reportResult(flux, "ONE w/ EH");
    flux = flux.doOnError(error -> {
        logger.error("Approach 1 with Error Handling failed!", error);
    });
    flux.subscribe();
}
 
Example 4
Source Project: tutorials   File: FooService.java    License: MIT License 5 votes vote down vote up
public void processUsingApproachThree(Flux<Foo> flux) {
    logger.info("starting approach three!");
    flux = concatAndSubstringFooName(flux);
    flux = reportResult(flux, "THREE");
    flux = flux.doOnError(error -> {
        logger.error("Approach 3 failed!", error);
    });
    flux.subscribe();
}
 
Example 5
Source Project: tutorials   File: FooService.java    License: MIT License 5 votes vote down vote up
public void processUsingApproachFourWithInitialCheckpoint(Flux<Foo> flux) {
    logger.info("starting approach four!");
    flux = concatAndSubstringFooName(flux);
    flux = flux.checkpoint("CHECKPOINT 1", true);
    flux = concatAndSubstringFooName(flux);
    flux = divideFooQuantity(flux);
    flux = reportResult(flux, "FOUR");
    flux = flux.doOnError(error -> {
        logger.error("Approach 4-2 failed!", error);
    });
    flux.subscribe();
}
 
Example 6
Source Project: etherjar   File: ReactorEmeraldClient.java    License: Apache License 2.0 4 votes vote down vote up
@Override
public Flux<RpcCallResponse> execute(ReactorBatch batch) {
    BlockchainOuterClass.NativeCallRequest.Builder requestBuilder = BlockchainOuterClass.NativeCallRequest.newBuilder();
    requestBuilder.setChain(chainRef);
    if (selector != null) {
        requestBuilder.setSelector(selector);
    }

    BatchCallContext<ReactorBatch.ReactorBatchItem> context = new BatchCallContext<>();
    Mono<BlockchainOuterClass.NativeCallRequest> request = batch.getItems()
        .doOnNext(context::add)
        .map(this::asNative)
        .reduce(requestBuilder, BlockchainOuterClass.NativeCallRequest.Builder::addItems)
        .map(BlockchainOuterClass.NativeCallRequest.Builder::build);

    Flux<RpcCallResponse> result = stub.nativeCall(request)
        .flatMap((item) -> {
            RpcCall<?, ?> call = null;
            try {
                call = context.getCall(item.getId());
            } catch (Exception e) {
                System.err.println("Invalid id returned from upstream: " + item.getId());
            }
            return read(item, call);
        })
        .onErrorResume(StatusRuntimeException.class, (e) -> {
          if (e.getStatus().getCode() == Status.Code.CANCELLED) {
              return Mono.empty();
          }
          return Mono.error(new RpcException(
              RpcResponseError.CODE_UPSTREAM_CONNECTION_ERROR,
              "gRPC connection error. Status: " + e.getStatus(),
              null,
              e
          ));
        })
        .map(responseJsonConverter.forContext(context));


    FailedBatchProcessor failedBatchProcessor = this.getFailedBatchProcessor();
    if (failedBatchProcessor != null) {
        Function<RpcException, Publisher<RpcCallResponse>> fallback = failedBatchProcessor.createFallback(batch);
        if (fallback != null) {
            result = result.onErrorResume(RpcException.class, fallback);
        }
    }

    result = result.doOnError((t) -> System.err.println("Client error " + t.getClass() + ": " + t.getMessage()));

    result = postProcess(batch, context, result);

    return result.share();
}