NullPointerException in KubeServiceState

[MichalKoziorowski-TomTom]

Version

5.0.1

Context

Hi,

I'm getting NullPointerException in KubeServiceState. It seems that addresses list is sometimes not filled. My backends were overloaded when it appeared so possible case is that none of backend pods were in ready state.

java.lang.NullPointerException: Cannot invoke "io.vertx.core.json.JsonArray.size()" because "addresses" is null
        at io.vertx.serviceresolver.kube.impl.KubeServiceState.handleEndpoints(KubeServiceState.java:108)
        at io.vertx.serviceresolver.kube.impl.KubeServiceState.handleUpdate(KubeServiceState.java:92)
        at io.vertx.serviceresolver.kube.impl.KubeServiceState.lambda$connectWebSocket$0(KubeServiceState.java:61)
        at io.vertx.core.internal.ContextInternal.dispatch(ContextInternal.java:249)
        at io.vertx.core.http.impl.WebSocketImplBase.receiveFrame(WebSocketImplBase.java:439)
        at io.vertx.core.http.impl.WebSocketImplBase$1.handleMessage(WebSocketImplBase.java:112)
        at io.vertx.core.http.impl.WebSocketImplBase$1.handleMessage(WebSocketImplBase.java:101)
        at io.vertx.core.internal.concurrent.InboundMessageQueue.test(InboundMessageQueue.java:86)
        at io.vertx.core.streams.impl.MessagePassingQueue.drain(MessagePassingQueue.java:228)
        at io.vertx.core.streams.impl.MessagePassingQueue.drain(MessagePassingQueue.java:210)
        at io.vertx.core.internal.concurrent.InboundMessageQueue.drainInternal(InboundMessageQueue.java:168)
        at io.vertx.core.internal.concurrent.InboundMessageQueue.drain(InboundMessageQueue.java:145)
        at io.vertx.core.internal.concurrent.InboundMessageQueue.write(InboundMessageQueue.java:132)
        at io.vertx.core.http.impl.WebSocketImplBase.handleFrame(WebSocketImplBase.java:373)
        at io.vertx.core.http.impl.WebSocketConnectionImpl.handleWsFrame(WebSocketConnectionImpl.java:197)
        at io.vertx.core.http.impl.WebSocketConnectionImpl.handleMessage(WebSocketConnectionImpl.java:176)
        at io.vertx.core.net.impl.VertxConnection.read(VertxConnection.java:247)
        at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:148)
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:355)
        at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
        at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:333)
        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:455)
        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at io.netty.handler.ssl.SslHandler.unwrap(SslHandler.java:1537)
        at io.netty.handler.ssl.SslHandler.decodeJdkCompatible(SslHandler.java:1395)
        at io.netty.handler.ssl.SslHandler.decode(SslHandler.java:1446)
        at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:530)
        at io.netty.handler.codec.ByteToMessageDecoder.callDecode(ByteToMessageDecoder.java:469)
        at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:290)
        at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
        at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1429)
        at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:918)
        at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:167)
        at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.handle(AbstractNioChannel.java:445)
        at io.netty.channel.nio.NioIoHandler$DefaultNioRegistration.handle(NioIoHandler.java:381)
        at io.netty.channel.nio.NioIoHandler.processSelectedKey(NioIoHandler.java:575)
        at io.netty.channel.nio.NioIoHandler.processSelectedKeysOptimized(NioIoHandler.java:550)
        at io.netty.channel.nio.NioIoHandler.processSelectedKeys(NioIoHandler.java:491)
        at io.netty.channel.nio.NioIoHandler.run(NioIoHandler.java:468)
        at io.netty.channel.SingleThreadIoEventLoop.runIo(SingleThreadIoEventLoop.java:206)
        at io.netty.channel.SingleThreadIoEventLoop.run(SingleThreadIoEventLoop.java:177)
        at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:1073)
        at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
        at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
        at java.base/java.lang.Thread.run(Unknown Source)

Steps to reproduce

No response

Do you have a reproducer?

No response