How to access key at any level? - json

Question

I have this input file
{
"description": "this is a fake description",
"owner": "john",
"region": "us-east-1",
"topics": {
"For collecting responses for prod1": {
"suffix_name": "response-to-hogwarts.fifo",
"tags": {}
}
},
"queues": {
"For collecting responses and requests from test1": {
"suffix_name": "rr_sf_name.fifo",
"tags": {}
},
"For collecting responses for test2": {
"suffix_name": "response-to-hogwarts.fifo",
"tags": {}
}
},
"subscriptions": {
"For receiving harry_potter requests": {
"topic": {
"suffix_name": "harry_potter.fifo",
"tag": "staging"
},
"queue": {
"suffix_name": "rr_sf_name.fifo"
}
},
"For receiving harry_potter requests from test3": {
"topic": {
"suffix_name": "harry_potter.fifo",
"tag": "harry_potter_hogwarts"
},
"queue": {
"suffix_name": "rr_sf_name.fifo"
}
},
"For receiving demo requests": {
"topic": {
"suffix_name": "demo.fifo",
"tag": "staging"
},
"queue": {
"suffix_name": "rr_sf_name.fifo"
}
},
"For receiving demo requests from test4 through connector": {
"topic": {
"suffix_name": "demo.fifo",
"tag": "harry_potter_hogwarts"
},
"queue": {
"suffix_name": "rr_sf_name.fifo"
}
},
"For receiving testing responses for hogwarts": {
"topic": {
"suffix_name": "response-to-hogwarts.fifo"
},
"queue": {
"suffix_name": "response-to-hogwarts.fifo"
}
}
}
}
Now I want to remove the ".fifo" suffix from the value of ALL the suffix_name fields, at any level
Example output (truncated for brevity)
"topics": {
"For collecting responses for prod1": {
"suffix_name": "response-to-hogwarts",
"tags": {}
}
},
Now I came up with this, which is working for me.
.queues |= with_entries(.value.suffix_name |= sub(".fifo";""))
| .topics |= with_entries(.value.suffix_name |= sub(".fifo";""))
| .subscriptions |= with_entries(.value |= with_entries(.value |= with_entries(.value |= rtrimstr(".fifo"))))
I want to know, if there is a better way, using recurse or something, to parse through all keys and if the key is suffix_name, trim the ".fifo" from the value.

Answer 1

You could use walk:
walk(if type=="object" and .suffix_name
then .suffix_name |= sub("[.]fifo$";"") else . end)
Alternatively, just use |=:
(.. | select(type == "object" and .suffix_name) | .suffix_name)
|= sub("[.]fifo$";"")

Answer 2

An alternate to walk using the path functions - getpath and setpath
reduce ( paths | select(.[-1] | endswith("suffix_name")? ) ) as $p
( .; setpath($p; getpath($p) | sub("[.]fifo$";"") ) )
Identify paths from the root to suffix_name and iterate it over using reduce. For each of the paths, reconstruct the value by having the suffix removed.