vcjmhg commented on issue #4545:
URL: https://github.com/apache/skywalking/issues/4545#issuecomment-702645540
ok, I got it. If do so, we should add an attribute named `filter` to filter
the logs with regular expression. And the `pattern` to control the formate of
the logs.Just like this:
```yaml
logger:
- name: "log4j2"
packages:
- package1
- package2
level: "trace"
pattern: "%date %level [%thread] %logger{10} [%file:%line] %msg%n"
filter:"Regular expression"
- name: "logbak"
packages:
- package3
level: "error"
patterns: "%msg%n"
filter:"Regular expression"
```
Is it ok?
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