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Clément de Groc commented on TINKERPOP-2523: -------------------------------------------- Ideally, if we could also record the same information TinkerPop provides in its Profile step in OpenTracing (/OpenTelemetry), that would be great. There are certainly other road blockers, but if {{MutableMetrics}} recorded the start/end time instead of duration, then we could maybe construct OpenTracing spans from them? > 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". > > -- This message was sent by Atlassian Jira (v8.3.4#803005)