红帽全球峰会221.8. Distribution Summary
micrometer:summary:metricname[?options]
micrometer:summary:metricname[?options]221.8.1. 选项
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| 名称 | default | 描述 |
|---|---|---|
| value | - | 在直方图中使用的值 |
如果没有设置 值，则不会将任何内容添加到直方图，并记录警告。
// adds value 9923 to simple.histogram
from("direct:in")
.to("micrometer:summary:simple.histogram?value=9923")
.to("direct:out");
// adds value 9923 to simple.histogram
from("direct:in")
.to("micrometer:summary:simple.histogram?value=9923")
.to("direct:out");// nothing is added to simple.histogram; warning is logged
from("direct:in")
.to("micrometer:summary:simple.histogram")
.to("direct:out");
// nothing is added to simple.histogram; warning is logged
from("direct:in")
.to("micrometer:summary:simple.histogram")
.to("direct:out");
值 被评估为带有 Double 结果 的简单 表达式，例如，如果标头 X 包含一个评估为 3.0 的值，这个值使用 simple.histogram 注册：
from("direct:in")
.to("micrometer:summary:simple.histogram?value=${header.X}")
.to("direct:out");
from("direct:in")
.to("micrometer:summary:simple.histogram?value=${header.X}")
.to("direct:out");221.8.2. Headers
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与 camel-metrics 一样，可以使用特定的 Message 标头来覆盖 Micrometer 端点 URI 中指定的值。
| 名称 | 描述 | 预期类型 |
|---|---|---|
| CamelMetricsHistogramValue | 覆盖 URI 中的直方图值 | Long |
// adds value 992.0 to simple.histogram
from("direct:in")
.setHeader(MicrometerConstants.HEADER_HISTOGRAM_VALUE, constant(992.0D))
.to("micrometer:summary:simple.histogram?value=700")
.to("direct:out")
// adds value 992.0 to simple.histogram
from("direct:in")
.setHeader(MicrometerConstants.HEADER_HISTOGRAM_VALUE, constant(992.0D))
.to("micrometer:summary:simple.histogram?value=700")
.to("direct:out")
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