Impression Server Metrics

The iserver has been instrumented with the OpenTelemetry Java API https://opentelemetry.io/. See the Impression Server Install Guide for instructions on how to enable it. The table below lists the custom metrics.

Name	Type	Description
causal.iserver.sessions.active	Gauge	The current count of the active sessions held in memory.
causal.iserver.sessions.retired	Gauge	The current count of the retired sessions held in memory.
causal.iserver.sessions.by.user	Gauge	The current count of the sessions indexed by the user.
causal.http.post.time.*	Timer	How long it took for the iserver to communicate to tools.causallabs.io.
causal.http.post.retries.*	Counter	How many retries were attempted when communicating to tools.causallabs.io.
causal.aws.s3.uploads.time	Timer	How long did each successful file upload to S3 take.
causal.aws.s3.uploads.fails	Counter	How mainly errors were encountered uploading a file to S3.
causal.aws.s3.listTime	Timer	How long does each listing operation on S3 take.
causal.plugin.invokeFill.time	Timer	How long does your plugins invokeFill implementation take.
causal.plugin.invokeFill.errors	Count	How many times did your invokeFill method throw an error.
causal.plugin.invokeGenericFill.time	Timer	How long does your plugins invokeGenericFill implementation take.
causal.plugin.invokeGenericFill.errors	Count	How many times did your invokeGenericFill method throw an error.
causal.plugin.invokeGenericOnEvent.time	Timer	How long does your plugins invokeGenericOnEvent implementation take.
causal.plugin.invokeGenericOnEvent.errors	Count	How many times did your invokeGenericOnEvent method throw an error.
causal.plugin.invokeGenericOnImpression.time	Timer	How long does your plugins invokeGenericOnImpression implementation take.
causal.plugin.invokeGenericOnImpression.errors	Count	How many times did your invokeGenericOnImpression method throw an error.
causal.plugin.invokeNewVariant.time	Timer	How long does your plugins invokeNewVariant implementation take.
causal.plugin.invokeNewVariant.errors	Count	How many times did your invokeNewVariant method throw an error.
causal.plugin.invokeOnImpression.time	Timer	How long does your plugins invokeOnImpression implementation take.
causal.plugin.invokeOnImpression.errors	Count	How many times did your invokeOnImpression method throw an error.