racorn opened a new pull request #8137:
URL: https://github.com/apache/pulsar/pull/8137
### Motivation
Pulsar code uses `CompletableFuture` to implement asynchronous execution
paths. When interacting with Netty, a common pattern is to create a
`CompletableFuture` and some glue code to listen for Netty `ChannelFuture`
completions and then complete the `CompletableFuture`. The code would be more
ease to read if we add static utility class for adapting a
`io.netty.channel.ChannelFuture` to a `java.util.concurrent.CompletableFuture`.
### Modifications
- Added `org.apache.pulsar.common.util.netty.ChannelFutures`
### Verifying this change
- Added test class `ChannelFuturesTest`
### Documentation
- JavaDocs
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