Is there a way to set a tag by source in inputs.conf?

[splunkto]

I'm writing an app where it has multiple sources that will be assigned to the sourcetype log4j. Searching for these logs for users is not straight forward because they need to search for something like "source=/full/app/path/*app.log*". Is there a way to tag at the source so instead the users could search for tag="appname" instead?

[somesoni2]

The tag is a search-time activity and can't be assigned in inputs.conf. I'm guessing a better option would be override the sourcetype to add the app name in the sourcetype itself so that you can search better (and it'll work with tstats command as well). Try like this

Indexer/Heavy Forwarder,

props.conf

[source::/fixed/portion/of/path/here.../app.log]
TRANSFORM-updatesourcetype = log4j_sourcetypeupdate

transforms.conf

[log4j_sourcetypeupdate]
SOURCE_KEY = MetaData:Source
REGEX = ....regex to find appname from file path....
FORMAT = sourcetype::log4j:$1
DEST_KEY =  MetaData:Sourcetype

[splunkto]

If you do this, will it execute all of the apps set for [log4j]? The reason I have it using log4j is because it handles the index related stuff automatically.