139.3. Ringbuffer cache producer
ringbuffer producer 提供 5 个操作：* add * readonceHead * readonceTail * remainingCapacity * capacity
请求消息的标头变量：
| 名称 | 类型 | 描述 |
|---|---|---|
|
|
| 有效值为： put, get, removevalue, delete |
|
|
| 在缓存中存储 / 的对象 id |
139.3.1. 放置 的示例：
Java DSL：
from("direct:put")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.ADD))
.to(String.format("hazelcast-%sbar", HazelcastConstants.RINGBUFFER_PREFIX));Spring DSL:
<route>
<from uri="direct:put" />
<log message="put.."/>
<!-- If using version 2.8 and above set headerName to "CamelHazelcastOperationType" -->
<setHeader headerName="hazelcast.operation.type">
<constant>add</constant>
</setHeader>
<to uri="hazelcast-ringbuffer:foo" />
</route>139.3.2. 从头 读取一次的示例 ：
Java DSL：
from("direct:get")
.setHeader(HazelcastConstants.OPERATION, constant(HazelcastOperation.READ_ONCE_HEAD))
.toF("hazelcast-%sbar", HazelcastConstants.RINGBUFFER_PREFIX)
.to("seda:out");