[英]Chaining reactive calls to redis in Spring
I am trying to get all keys, and then fetch all their values using a ReactiveRedisTemplate
in Spring Data Redis我正在尝试获取所有键,然后使用 Spring 数据 Redis 中的
ReactiveRedisTemplate
获取它们的所有值
(I know that scan
is preferable, but I want to keep it simple for now, unless that is my issue) (我知道
scan
更可取,但我现在想保持简单,除非这是我的问题)
code snnipet:代码片段:
@Service
class Test {
Logger logger = LoggerFactory.getLogger(Test.class);
@Autowired
private ReactiveRedisTemplate<String, String> reactiveRedisTemplate;
@EventListener(ApplicationReadyEvent.class)
public void test() {
logger.info("test");
var ops = reactiveRedisTemplate.opsForValue();
var keys = reactiveRedisTemplate.keys("*");
keys
.map(l -> {
logger.info("test1 " + l);
return ops.get(l);
})
.doOnNext(
l -> logger.info("test2 " + l)
)
.blockLast();
logger.info("done");
}
}
The problem is that I am getting this output:问题是我得到了这个 output:
test
test1 key1
test2 MonoNext
test1 key2
test2 MonoNext
test1 key3
test2 MonoNext
test1 key4
test2 MonoNext
done
I would expect:我希望:
test
test1 key1
test2 val1
test1 key2
test2 val2
test1 key3
test2 val3
test1 key4
test2 val4
done
I am new to rx-java, so I am probably missing something.我是 rx-java 的新手,所以我可能遗漏了一些东西。
Found the solution...找到了解决方案...
I had to use flatMap
instead of map...我不得不使用
flatMap
而不是 map ......
@Service
class Test {
Logger logger = LoggerFactory.getLogger(Test.class);
@Autowired
private ReactiveRedisTemplate<String, String> reactiveRedisTemplate;
@EventListener(ApplicationReadyEvent.class)
public void test() {
logger.info("test");
var ops = reactiveRedisTemplate.opsForValue();
var keys = reactiveRedisTemplate.keys("*");
keys
.flatMap(l -> {
logger.info("test1 " + l);
return ops.get(l);
})
.doOnNext(
l -> logger.info("test2 " + l)
)
.blockLast();
reactiveRedisTemplate.opsForValue().get("test").doOnNext(l -> logger.info("test2 " + l)).block();
logger.info("done");
}
}
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