如何在同一线程中运行单声道，在平行通量内 [英] How to run mono in the same thread, inside parallel flux

问题描述

我正在尝试用 Mono 中的值填充 Flux 中的对象.当我尝试这样做时，它只是忽略了我的设置"操作.我认为这是因为 Flux 是并行工作的，而 Mono 不是.我该如何解决这个问题?

I'm trying to fill objects inside Flux with values from Mono. When i'm trying to do so, it's just ignoring my "set" operation. I assume that it's because Flux is working in parallel, while Mono is not. How can i solve this problem?

Flux.fromIterable(proxyParserService.getProxyList())
            .parallel()
            .runOn(Schedulers.parallel())
            .filter(proxy -> proxy.getCorrupted() == null || !proxy.getCorrupted())
            .subscribe(proxy -> {
                        try {
                            RestTemplate restTemplate = getProxiedTemplate(proxy.getHost(), proxy.getPort());
                            restTemplate.exchange(URI, HttpMethod.GET, HttpEntity.EMPTY, String.class);
                            geoDataService.getData(proxy.getHost()) // Here comes the Mono object, that contains needed value to set into "proxy"
                                    .subscribe(geoData ->
                                    {
                                        log.info("GEODATA: {} ", geoData);
                                        proxy.setCountryCode(geoData.getCountryCode()); // ignored somehow
                                    });
                            proxy.setCorrupted(false);
                            addresses.add(proxy);
                            log.info("IP {}:{} is OK", proxy.getHost(), proxy.getPort());
                            log.info("Final result: {}", proxy.toString());
                        } catch (ResourceAccessException e) {
                            log.info("IP {}:{} is corrupted!", proxy.getHost(), proxy.getPort());
                            proxy.setCorrupted(true);
                            addresses.add(proxy);
                        }
                    },
                    throwable -> log.error(String.format("Exception caught while trying to fill map: %s", throwable.getCause())));

}

这是一些日志

如您所见，我正在尝试将国家/地区代码设置为代理.

As you can see i'm trying to set country code into proxy.

推荐答案

已解决.在flatMap"操作符中添加了 Mono 对象.示例:

Solved. Added that Mono object in "flatMap" operator. Example:

Flux.fromIterable(proxyParserService.getProxyList())
            .parallel()
            .runOn(Schedulers.parallel())
            .filter(poxy -> !valueExist(addresses.values(), poxy))
            .flatMap(geoDataService::getData) // Now it runs in parallel threads
            .subscribe(proxy -> {
                        try {
                            RestTemplate restTemplate = getProxiedTemplate(proxy.getHost(), proxy.getPort());
                            restTemplate.exchange(URI, HttpMethod.GET, HttpEntity.EMPTY, String.class);
                            proxy.setCorrupted(false);
                            addresses.put(proxy.getCountryCode(), proxy);
                            log.info("IP {}:{} is OK", proxy.getHost(), proxy.getPort());
                            log.info("Final result: {}", proxy.toString());
                        } catch (ResourceAccessException e) {
                            log.info("IP {}:{} is corrupted!", proxy.getHost(), proxy.getPort());
                            proxy.setCorrupted(true);
                            addresses.put(proxy.getCountryCode(), proxy);
                        }
                    },
                    throwable -> log.error(String.format("Exception caught while trying to fill map: %s", throwable.getCause())));

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