Option --keyspace-metrics=ALL causes exception

[smarsching]

When specifying --keyspace-metrics=ALL, the following exception is raised when trying to retrieve the metrics:

WARN  [prometheus-netty-pool-0] 2025-01-22 23:08:24,507 DefaultChannelPipeline.java:1152 - An exceptionCaught() event was fired, and it reached at the tail of the pipeline. It usually means the last handler in the pipeline did not handle the exception.
java.lang.ClassCastException: class org.apache.cassandra.metrics.CassandraMetricsRegistry$JmxCounter cannot be cast to class org.apache.cassandra.metrics.CassandraMetricsRegistry$JmxGaugeMBean (org.apache.cassandra.metrics.CassandraMetricsRegistry$JmxCounter and org.apache.cassandra.metrics.CassandraMetricsRegistry$JmxGaugeMBean are in unnamed module of loader 'app')
	at com.zegelin.cassandra.exporter.CollectorFunctions$3.<init>(CollectorFunctions.java:86)
	at com.zegelin.cassandra.exporter.CollectorFunctions.lambda$numericGaugeMetricsStream$8(CollectorFunctions.java:84)
	at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
	at com.google.common.collect.CollectSpliterators$1.lambda$tryAdvance$0(CollectSpliterators.java:123)
	at java.base/java.util.Spliterators$ArraySpliterator.tryAdvance(Spliterators.java:1002)
	at com.google.common.collect.CollectSpliterators$1.tryAdvance(CollectSpliterators.java:122)
	at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.lambda$initPartialTraversalState$0(StreamSpliterators.java:292)
	at java.base/java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.fillBuffer(StreamSpliterators.java:206)
	at java.base/java.util.stream.StreamSpliterators$AbstractWrappingSpliterator.doAdvance(StreamSpliterators.java:161)
	at java.base/java.util.stream.StreamSpliterators$WrappingSpliterator.tryAdvance(StreamSpliterators.java:298)
	at java.base/java.util.Spliterators$1Adapter.hasNext(Spliterators.java:681)
	at com.zegelin.prometheus.exposition.text.TextFormatMetricFamilyWriter$MetricVisitor.lambda$metricWriter$0(TextFormatMetricFamilyWriter.java:154)
	at com.zegelin.prometheus.exposition.text.TextFormatMetricFamilyWriter.writeMetric(TextFormatMetricFamilyWriter.java:227)
	at com.zegelin.prometheus.exposition.text.TextFormatExposition.nextSlice(TextFormatExposition.java:81)
	at com.zegelin.prometheus.exposition.FormattedByteChannel.read(FormattedByteChannel.java:24)
	at io.netty.handler.stream.ChunkedNioStream.isEndOfInput(ChunkedNioStream.java:79)
	at io.netty.handler.codec.http.HttpChunkedInput.readChunk(HttpChunkedInput.java:93)
	at io.netty.handler.codec.http.HttpChunkedInput.readChunk(HttpChunkedInput.java:43)
	at io.netty.handler.stream.ChunkedWriteHandler.doFlush(ChunkedWriteHandler.java:229)
	at io.netty.handler.stream.ChunkedWriteHandler.flush(ChunkedWriteHandler.java:131)
	at io.netty.channel.AbstractChannelHandlerContext.invokeFlush0(AbstractChannelHandlerContext.java:923)
	at io.netty.channel.AbstractChannelHandlerContext.invokeWriteAndFlush(AbstractChannelHandlerContext.java:941)
	at io.netty.channel.AbstractChannelHandlerContext.write(AbstractChannelHandlerContext.java:966)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:934)
	at io.netty.channel.AbstractChannelHandlerContext.writeAndFlush(AbstractChannelHandlerContext.java:984)
	at com.zegelin.cassandra.exporter.netty.HttpHandler.sendMetrics(HttpHandler.java:303)
	at com.zegelin.cassandra.exporter.netty.HttpHandler.channelRead0(HttpHandler.java:94)
	at com.zegelin.cassandra.exporter.netty.HttpHandler.channelRead0(HttpHandler.java:39)
	at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.handler.codec.MessageToMessageCodec.channelRead(MessageToMessageCodec.java:111)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:444)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
	at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:346)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:318)
	at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:442)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:412)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:440)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:420)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:788)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:724)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:650)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:562)
	at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:997)
	at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
	at java.base/java.lang.Thread.run(Thread.java:840)

This happens, because the SpeculativeRetries metrics is a JmxCounter on the table and keyspace level, but a JmxGauge on the node level, but the code current assumes that it is a JmxGauge on both the node and keyspace level.