markusthoemmes commented on a change in pull request #4023: Emit CosmosDB
request usage metric
URL:
https://github.com/apache/incubator-openwhisk/pull/4023#discussion_r218031598
##########
File path:
common/scala/src/main/scala/whisk/core/database/cosmosdb/CosmosDBArtifactStore.scala
##########
@@ -206,6 +217,10 @@ class CosmosDBArtifactStore[DocumentAbstraction <:
DocumentSerializer](protected
RxReactiveStreams.toPublisher(client.queryDocuments(collection.getSelfLink,
querySpec, newFeedOptions()))
val f = Source
.fromPublisher(publisher)
+ .map { f =>
+ collectMetrics(queryToken, f.getRequestCharge)
+ f
+ }
Review comment:
Could you use `wireTap` here?
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