Shell variables as additional fields in json - json

Question

I'm able to retrieve each user's data into m4-$u.json file with the below shell script
#!/bin/bash
USERID=ricardo.sanchez
PASSWORD=password
PORT=2728
for u in `cat user-list.txt`;
do echo $u;
curl --user $USERID:$PASSWORD http://198.98.99.12:46567/$PORT/protects/$u | jq '.' > m4-$u.json
done
One for the user's output of m4-daniel.json file few lines as follows.
[
{
"depotFile": "//ABND/JJEB/...",
"host": "*",
"isgroup": "",
"line": "16",
"perm": "open",
"user": "5G_USER_GROUP"
},
{
"depotFile": "//LIB/...",
"host": "*",
"isgroup": "",
"line": "19",
"perm": "write",
"user": "6G_USER_GROUP"
},
{
"depotFile": "//AND/RIO/...",
"host": "*",
"isgroup": "",
"line": "20",
"perm": "write",
"user": "AND_USER_GROUP"
},
During shell script run time additionally $PORT & $u variable values need to be added in output of each json file.
Expected json output:-
{
"depotFile": "//ABND/JJEB/...",
"host": "*",
"isgroup": "",
"line": "16",
"perm": "open",
"user": "5G_USER_GROUP",
"port": "2728",
"userid": "daniel"
},
To achieve this any help will be appreciated.

Answer 1

By using --arg with jq you can pass paremeter and use as a variables
( more info https://stedolan.github.io/jq/manual/v1.5/#Invokingjq )
by using map and + you can iterate over the array and add a new property for each associative array
in you case :
curl --user $USERID:$PASSWORD http://198.98.99.12:46567/$PORT/protects/$u \
| jq --arg a_port $PORT --arg $u $USER 'map(.+{"userid":$a_userid}+{"port":$a_port|tonumber})' > m4-$u.json
see addition and map in
https://stedolan.github.io/jq/manual/v1.5/#Builtinoperatorsandfunctions