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package kamon.util
import com.typesafe.config.Config
import kamon.{Environment, Kamon}
import scala.collection.JavaConverters._
/**
* Utility class to create a Map[String, String] encoding all the Environment information based on the provided
* Config. The Config instance is expected to have the following members:
*
* - service: Boolean. If true a service tag is included.
* - host: Boolean. If true a host tag is included.
* - instance: Boolean. If true a instance tag is included.
* - blacklisted-tags: List[String]. List of Environment tags that should not be included in the result.
*
* This utility is meant to be used mostly by reporter modules.
*
*/
object EnvironmentTagBuilder {
def create(config: Config): Map[String, String] =
create(Kamon.environment, config)
def create(env: Environment, config: Config): Map[String, String] = {
val envTags = Map.newBuilder[String, String]
if(config.getBoolean("service"))
envTags += ("service" -> env.service)
if(config.getBoolean("host"))
envTags += ("host" -> env.host)
if(config.getBoolean("instance"))
envTags += ("instance" -> env.instance)
val blacklistedTags = config.getStringList("blacklisted-tags").asScala
env.tags.filterKeys(k => !blacklistedTags.contains(k)).foreach(p => envTags += p)
envTags.result()
}
}
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