feat: instrument cron with OTEL #31916
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bartlomieju
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crowlKats
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Jan 22, 2026
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This PR adds OpenTelemetry tracing support to
Deno.cron()handlers. When OTELtracing is enabled, each cron handler invocation is wrapped in a span named
"deno.cron"withdeno.cron.nameanddeno.cron.scheduleattributes. Thespan is properly entered so that any child spans created within the handler are
correctly parented. On successful execution, the span status is set to
OK(code 1); on error, the span captures exception details using OTel semantic
conventions (
exception.type,exception.message,exception.stacktrace) andsets the status to
ERROR(code 2). This also updatesupdateSpanFromErrorinthe telemetry utils to use the standard OTel exception attributes instead of the
previous
error.typeattribute.