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Alex Van Boxel commented on TINKERPOP-2523:
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It's well worth looking into [https://opentelemetry.io/] for this. It's pretty
unique as it's a merge of OpenTracing and OpenCencus and has a lot of industry
traction.
When using the Java SDK you can include exporters to:
* OTLP protocol, that can be sent to a collector (external process) that will
run as an in-between to popular open-source and commercial distributed tracing
products.
* Maybe the java-instrumentation can be used for the TraveralOpProcessor, by
doing the weaving through a javaagent?
Don't know enough about TinkerPop if the above makes sense.
> Allow registration of listeners for traversal iteration begin/end events
> ------------------------------------------------------------------------
>
> Key: TINKERPOP-2523
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2523
> Project: TinkerPop
> Issue Type: Improvement
> Components: server
> Affects Versions: 3.4.10
> Reporter: Clément de Groc
> Priority: Minor
>
> In order to improve observability/monitoring (e.g. distributed tracing,
> logging of traversals requests), it would be nice if users could register
> custom listeners for traversal iteration begin/end events.
> Those begin/end events are actually already nicely exposed as protected
> methods in
> [TraversalOpProcessor|https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/op/traversal/TraversalOpProcessor.java#L262-L272].
> Though, in 3.4.10, it is difficult to subclass TraversalOpProcessor to
> override those methods as the
> [OpLoader|https://github.com/apache/tinkerpop/blob/master/gremlin-server/src/main/java/org/apache/tinkerpop/gremlin/server/op/OpLoader.java#L47]
> ensures only one OpProcessor can be loaded with name "traversal".
>
>
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