Not all tags show up in the axon server ui

Axon Server
1

As far as I can tell, adding multiple tags to an event through a collection works fine. However, these tags beyond the first one are not shown in the axon server web interface See the example below:

import nl.overheid.ubb.shared.AbstractComponentTest
import org.assertj.core.api.Assertions.assertThat
import org.axonframework.eventsourcing.annotation.EventTag
import org.axonframework.eventsourcing.eventstore.EventStorageEngine
import org.axonframework.eventsourcing.eventstore.SourcingCondition
import org.axonframework.messaging.core.MessageStream
import org.axonframework.messaging.eventhandling.EventMessage
import org.axonframework.messaging.eventstreaming.EventCriteria
import org.axonframework.messaging.eventstreaming.Tag
import org.junit.jupiter.api.Test
import org.springframework.beans.factory.annotation.Autowired

class Testje {

    @Autowired
    lateinit var eventStorageEngine1: EventStorageEngine

    @Test
    fun testje() {
        publishEvents(
            ExampleEvent(
                id1 = "a",
                setOf("b", "c"),
            ),
        )

        println(eventStorageEngine1::class.qualifiedName)
        assertThat(getMessageStream().invoke().asMessageSequence().count()).isEqualTo(2) // including terminal message
    }

    private fun getMessageStream(): () -> MessageStream<EventMessage> = {
        eventStorageEngine1.source(
            SourcingCondition.conditionFor(
                EventCriteria
                    .havingTags(Tag.of("tag2", "c")),

            ),
        )
    }

    private fun MessageStream<EventMessage>.asMessageSequence(): Sequence<EventMessage> = sequence {
        while (!isCompleted) {
            if (!hasNextAvailable()) continue
            yield(next().get().message())
        }
    }
}

data class ExampleEvent(@EventTag("tag1") val id1: String, @EventTag("tag2") val moreIds: Set<String>)

This test passes However, Looking in the ui, I see:

afbeelding
afbeelding1532×601 48.6 KB

{tag1=a, tag2=b}

I would have expected {tag1=a, tag2=b, tag2=c}.

update: here is a link to the source code which can be run if so desired:
https://gitlab.com/digilab.overheid.nl/research/uit-betrouwbare-bron/beproevingen/woz-axon-kotlin/-/blob/bug-axonserver/app/src/test/kotlin/nl/overheid/ubb/Testje.kt?ref_type=heads

2

@maartenjanvangool
Thank you for reporting that!

There is indeed a bug on the UI, that tags were returned as a Map, and if the key is duplicated, just one is returned.

We will fix it in the future release.

1 Like