红帽全球峰会221.7. Counter
micrometer:counter:name[?options]
micrometer:counter:name[?options]221.7.1. 选项
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| 名称 | default | 描述 |
|---|---|---|
| increment | - | 要添加到计数器的双值 |
| decrement | - | 从计数器中减去的双引号 |
如果未定义 递增 或减少，则计数器值将递增。如果 递增 和减少，则仅调用递增操作。
// update counter simple.counter by 7
from("direct:in")
.to("micrometer:counter:simple.counter?increment=7")
.to("direct:out");
// update counter simple.counter by 7
from("direct:in")
.to("micrometer:counter:simple.counter?increment=7")
.to("direct:out");// increment counter simple.counter by 1
from("direct:in")
.to("micrometer:counter:simple.counter")
.to("direct:out");
// increment counter simple.counter by 1
from("direct:in")
.to("micrometer:counter:simple.counter")
.to("direct:out");
increment 和 decrement 值被评估为 Simple 表达式，并带有 Double 结果，例如，如果标头 X 包含一个评估为 3.0 的值，则 simple.counter 计数器会减少 3.0：
// decrement counter simple.counter by 3
from("direct:in")
.to("micrometer:counter:simple.counter?decrement=${header.X}")
.to("direct:out");
// decrement counter simple.counter by 3
from("direct:in")
.to("micrometer:counter:simple.counter?decrement=${header.X}")
.to("direct:out");221.7.2. Headers
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与 camel-metrics 一样，特定的 Message 标头可用于覆盖 Micrometer 端点 URI 中指定的 递增 和减少值。
| 名称 | 描述 | 预期类型 |
|---|---|---|
| CamelMetricsCounterIncrement | 覆盖 URI 中的递增值 | 双 |
| CamelMetricsCounterDecrement | 覆盖 URI 中的 decrement 值 | 双 |
// update counter simple.counter by 417
from("direct:in")
.setHeader(MicrometerConstants.HEADER_COUNTER_INCREMENT, constant(417.0D))
.to("micrometer:counter:simple.counter?increment=7")
.to("direct:out");
// update counter simple.counter by 417
from("direct:in")
.setHeader(MicrometerConstants.HEADER_COUNTER_INCREMENT, constant(417.0D))
.to("micrometer:counter:simple.counter?increment=7")
.to("direct:out");// updates counter using simple language to evaluate body.length
from("direct:in")
.setHeader(MicrometerConstants.HEADER_COUNTER_INCREMENT, simple("${body.length}"))
.to("micrometer:counter:body.length")
.to("direct:out");
// updates counter using simple language to evaluate body.length
from("direct:in")
.setHeader(MicrometerConstants.HEADER_COUNTER_INCREMENT, simple("${body.length}"))
.to("micrometer:counter:body.length")
.to("direct:out");
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