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[doc] [#17] Add example of using middleware to remove unwanted signal keys

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Peter Taoussanis 2024-08-22 09:02:21 +02:00
parent a77021e436
commit 19d10ed789
1 changed files with 17 additions and 2 deletions
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19
resources/signal-docstrings/signal-content.txt
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@ -1,5 +1,5 @@
Signals are maps with {:keys [inst id ns level data msg_ ...]},
though they can be modified by signal and/or handler middleware.
Signals are maps with {:keys [inst id ns level data msg_ ...]}, though they
can be modified by signal and/or handler middleware (see end for examples).
Default signal keys:
@ -38,6 +38,21 @@ Default signal keys:
in handler output, so a great way to provide custom data/opts for use
(only) by custom middleware/handlers.
--
Middleware examples:
Remove key/s from all signals:
(t/set-middleware! (fn [signal] (dissoc signal :unwanted-key1 ...)))
Remove key/s from signals to specific handler:
(t/add-handler! ::my-handler my-handler
{:middleware (fn [signal] (dissoc signal :unwanted-key1 ...))})
--
If anything is unclear, please ping me (@ptaoussanis) so that I can improve these docs!
[1] `java.time.Instant` or `js/Date`