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Document payload types of messages sent to metricsChannel

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Closes gh-7790
This commit is contained in:
Andy Wilkinson 2017-01-22 15:22:00 +00:00
parent c86b844477
commit 68fdd49a0b
1 changed files with 6 additions and 4 deletions
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10
spring-boot-docs/src/main/asciidoc/production-ready-features.adoc
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@ -1448,10 +1448,12 @@ replaced with a `DropwizardMetricServices`, which is a wrapper around the `Metri
[[production-ready-metrics-message-channel-integration]]
=== Message channel integration
If a `MessageChannel` bean called `metricsChannel` exists, then a `MetricWriter` will be
created that writes metrics to that channel. The writer is automatically hooked up to an
exporter (as for all writers), so all metric values will appear on the channel, and
additional analysis or actions can be taken by subscribers (it's up to you to provide the
channel and any subscribers you need).
created that writes metrics to that channel. Each message sent to the channel will contain
a {dc-spring-boot-actuator}/metrics/writer/Delta.{dc-ext}[`Delta`] or
{dc-spring-boot-actuator}/metrics/Metric.{dc-ext}[`Metric`] payload and have a `metricName`
header. The writer is automatically hooked up to an exporter (as for all writers), so all
metric values will appear on the channel, and additional analysis or actions can be taken
by subscribers (it's up to you to provide the channel and any subscribers you need).