Add support for ZPOPMIN and ZPOPMAX commands including blocking variants

[max-end]

redisTemplate is not suport zpopmin、zpopmax instructions?

[mp911de]

Thanks for reaching out. We're happy to review a pull request that introduces this functionality. Until then you can use RedisConnection.execute(…) to call Redis commands yourself that aren't exposed through a Java method.

[max-end]

Thanks for reaching out. We're happy to review a pull request that introduces this functionality. Until then you can use RedisConnection.execute(…) to call Redis commands yourself that aren't exposed through a Java method.

Can you help me? thank you

RedisConnection redisConnection=redisTemplate.getRequiredConnectionFactory().getConnection(); Object o = redisConnection.execute("zpopmin","TESTLIST".getBytes());

java.lang.IllegalStateException: io.lettuce.core.output.ByteArrayOutput does not support set(double)

at io.lettuce.core.output.CommandOutput.set(CommandOutput.java:118)
at io.lettuce.core.protocol.RedisStateMachine.safeSet(RedisStateMachine.java:794)
at io.lettuce.core.protocol.RedisStateMachine.handleFloat(RedisStateMachine.java:426)
at io.lettuce.core.protocol.RedisStateMachine$State$Type.handle(RedisStateMachine.java:206)
at io.lettuce.core.protocol.RedisStateMachine.doDecode(RedisStateMachine.java:334)
at io.lettuce.core.protocol.RedisStateMachine.decode(RedisStateMachine.java:295)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:832)
at io.lettuce.core.protocol.CommandHandler.decode0(CommandHandler.java:783)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:766)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:649)
at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:589)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:748)

[mp911de]

When using Lettuce, you need to provide a CommandOutput to capture the Redis response. For [B]ZPOP[MIN|MAX] that's new ScoredValueOutput<>(ByteArrayCodec.INSTANCE) (via execute(String command, @Nullable CommandOutput commandOutputTypeHint, byte[]... args)).

Spring Data Redis doesn't have yet command output hints for these commands.

[poeschko]

Very nice to get support for these commands! Any idea yet when this will be available in a released version?