howto configure a log filter

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mmaty 112 posts 285 karma points

Jun 28, 2024 @ 09:57
0

Howto configure a log filter
Hello everyone,

we use a user-defined Serilog Sink that sends emails. We want to exclude some messages from the log to this sink. In earlier versions this was possible via the serilog.user.config file
```
<add key="serilog:write-to:FFSmtp.filter" value="Failed to build models" />
```
but since Umbraco 9 I don't see a way to configure that.

The serilog docu suggests using a filter section:
```
"Filter": [{
  "Name": "ByIncludingOnly",
  "Args": {
      "expression": "Application = 'Sample'"
  }
}]
```
This filters messages for all sinks. I could live with that, but I can't find any documentation on how to apply filter expressions to the log message. This stack overflow post suggests using @Message or @m but both don't work.
```
"Filter": [{
  "Name": "ByIncludingOnly",
  "Args": {
      "expression": "@Message = 'Sample'"
  }
}]
```
Do you have an idea how to solve this?

-mm
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Huw Reddick 1929 posts 6697 karma points MVP 2x c-trib

Jun 28, 2024 @ 11:11

0

do you have the Serilog.Expressions package installed?

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mmaty 112 posts 285 karma points

Jun 28, 2024 @ 11:42

0

Serilog.Expressins comes as dependency of Umbraco.Cms.Infrastructure.

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Huw Reddick 1929 posts 6697 karma points MVP 2x c-trib

Jun 28, 2024 @ 12:03
0
maybe the comparison is failing, perhaps try something like
```
"Filter": [{
  "Name": "ByIncludingOnly",
  "Args": {
      "expression": "Contains(@m, 'Sample')"
  }
}]
```
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