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accurate state documentation for Starlark

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Steven Soroka 2021-03-11 16:35:26 -05:00 committed by GitHub
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plugins/processors/starlark/README.md
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@ -165,9 +165,12 @@ def apply(metric):
**How can I save values across multiple calls to the script?** **How can I save values across multiple calls to the script?**
A shared global dictionary named `state` exists, this can be used by the `apply` function. Telegraf freezes the global scope, which prevents it from being modified, except for a special shared global dictionary
named `state`, this can be used by the `apply` function.
See an example of this in [compare with previous metric](/plugins/processors/starlark/testdata/compare_metrics.star) See an example of this in [compare with previous metric](/plugins/processors/starlark/testdata/compare_metrics.star)
Other than the `state` variable, attempting to modify the global scope will fail with an error.
**How to manage errors that occur in the apply function?** **How to manage errors that occur in the apply function?**
In case you need to call some code that may return an error, you can delegate the call In case you need to call some code that may return an error, you can delegate the call