Metrics Common Tags

Micro-util for adding common tags to spring boot metrics (spring boot actuator).

Similarly, but not the same feature (since Spring Boot 2.1.0) - management.metrics.tags.*, because it helps to extract some non constant data.

Getting Started

1. Add dependency to build file (build.gradle.kts)

implementation("io.github.ing8ar.metrics-common-tags:metrics-common-tags-autoconfigure:0.1.1")

2. Add properties to your spring boot application.yml

metrics:
  common:
    tags:
      - app
      - host

3. Run app

Your app will add that tags with values for each metric:

Pre-initialize tags

Customization

You can add your own tags, or override exist.

Add your own tag

Create bean which implements TagExtractor:

    @Bean
    open fun customTagExtractor() = object : TagExtractor {
        override val tagName: String
            get() = "custom-tag"

        override fun extract() = "custom tag data"

    }

, then add tag name to configuration file (ex.: application.yml):

metrics:
  common:
    tags:
      - custom-tag

Override exist

See example project