Add evaluateAt support for probe instrumentations #4320
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| case EXIT: | ||
| return Snapshot.MethodLocation.EXIT; | ||
| } | ||
| return null; |
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Will this become a NPE in the caller?
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| protected LabelNode getReturnHandler(AbstractInsnNode exitNode) { | ||
| // exit node must have been removed from the original instruction list | ||
| assert exitNode.getNext() == null && exitNode.getPrevious() == null; |
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Assertions aren't enabled by default, right?
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no, only if you enable with -ea
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Soo, this is redundant because nobody enables assertions?
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How about replacing with a IllegalArgumentException?
| } | ||
| } | ||
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| @Override | ||
| protected InsnList getBeforeReturnInsnList(AbstractInsnNode node) { | ||
| return callMetric(metricProbe); |
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would we be able to add condition for metrics in this fashion as well?
| @@ -290,6 +295,12 @@ public enum Kind { | |||
| AFTER; | |||
| } | |||
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| public enum MethodLocation { | |||
| NONE, | |||
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I find the name and value confusing.
evalautAt = None means evaluate both at entry and exit for snapshot but entry for metric and logs (I think). maybe change it to DEFAULT or use null to indicate there is nothing there.
Also suggest to rename to EvalauteAtLocation not confusing with method inside ProbleLocation.
* Snapshot: indicates for method probe where conditions are evaluated before serializing data. Either at entry or exit of the method. * Metric: indicates for method probe where the metric is emitted and with which values. For example at Exit of the method you can emit the return value of the method. * Log: use the same mechanism than snapshot but can report for example at exit of the method the return value.
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What Does This Do
Motivation
following #4313
Additional Notes