mongoDB output client driver name only from currentOp function

Question

I'm in no way a mongoDB expert.
I try to get the currentOp.clientMetadata.driver for every currentOp currently running.
I know how to filter to get all the operation that have a field clientMetadata:

db.currentOp( { "clientMetadata":  {$exists: true } })

But this output all the operations with all there data which is verbose and useless.
I only want to filter the output to only some specific field like :

• clientMetadata.driver
• client
• clientMetadata.application

Is there a way to only output some field from currentOp, I've tried find, in many ways but apparently db.currentOp is not to be found...

Answer 1

From official MongoDB doc, currentOp is deprecated

Deprecated since version 6.2.

In versions 6.2 and later use the $currentOp aggregation stage.

In an aggregation pipeline, you can chain up the $currentOP operation with other projections like this:

db.getSiblingDB("admin").aggregate([
    { 
        $currentOp: {} 
    },
    {
        $project: {
            // the fields you want here
            "clientMetadata.driver": 1,
            "client": 1,
            "clientMetadata.application": 1
        }
    }
])