How to await when all Monos from List are finished(doesn't matter succesfully or not)

Question

I have such code:

List<Mono> monoList = foo();
//await when all Monos are finished
try {
    Flux.fromIterable(monoList)
            .flatMap(Function.identity())
            .then()
            .block();

} catch (Exception e) {
    log.warn("error", e);
}

It works perfect when all MONO are finished successfully but doesn't work if at least onee Mono finished with error. Method block throw exceptions and interrupts all other monos. So this code awaits when all mono are finished successfully or when the first error happen.

How to await when all Monos from monoList are finished(doesn't matter succesfully or not)

score 0 · Accepted Answer · answered Dec 13 '19 at 08:56

0

This works:

  try {
        Flux.fromIterable(monoList)
                .flatMap(Function.identity())
                .then()
                .onErrorContinue((throwable, o) -> {
                    //just ignore it we've already caught all errors
                })
                .block();

    } catch (Exception e) {
        log.warn("Polling finished with exceptions", e);
    }

answered Dec 13 '19 at 08:56

gstackoverflow

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dont use try catch in a reactive world, try catch is blocking, errors should be handled in the code flow instead – Toerktumlare Dec 13 '19 at 15:23
I did it just to make sure that this code doesn't throw exception – gstackoverflow Dec 13 '19 at 20:22

How to await when all Monos from List are finished(doesn't matter succesfully or not)

1 Answers1