Convert values from array in json object using bash shell - bash

Question

I am totaly new to shell..... let me ut the proper use case.
Use case:-
I have written two get method in my shell script, and when a user calls that script I will perform some operation for many id's using a for loop. like below
test_get1(){
value1=//performing some operation and storing it
value2=//performing some operation and storing it
//below line I am converting the o/p of value1 and value2 in json
value=$JQ_TOOL -n --arg key1 "$value1" --arg key2 "$value2" '{"key1":"\($value1)","key2":"\($value2)"}'
}
test_get2(){
arr=(1,2,3)
local arr_values=()
for value in arr
do
// Calling test_get1 for each iteraion of this loop, like below
val=$(test_get1 $value)
//below line will store the values in array
arr_values+=("$val")
done
}
When I am doing echo for the above arr_values, I am getting the below output
Output.
arr_values={
"key1":"value1",
"key2":"value2"
}
{
"key1":"value1",
"key2":"value2"
}
I want to convert the above value in json format like below.
json_value=[
{
"key1":"value1",
"key2":"value2"
},
{
"key1":"value1",
"key2":"value2"
}
]
I tried to do it with JQ, but unable to get the proper result.

Answer 1

Use the slurp option:
jq -s . in.json > out.json
in.json
{
"key1": "value1",
"key2": "value2"
}
{
"key1": "value1",
"key2": "value2"
}
out.json
[
{
"key1": "value1",
"key2": "value2"
}
]
[
{
"key1": "value1",
"key2": "value2"
}
]

Answer 2

1) Your existing "value=" line can be simplified to:
value=$(jq -n --arg key1 "$value1" --arg key2 "$value2" '\
{key1: $value1, key2: $value2}')
because --arg always interprets the provided value as a string, and because jq expressions need not follow all the rules of JSON.
2) From your script, arr_value is a bash array of JSON values. To convert it into a JSON array, you should be able to use an incantation such as:
for r in "${a[#]}" ; do printf "%s" "$r" ; done | jq -s .
3) There is almost surely a much better way to achieve your ultimate goal. Perhaps it would help if you thought about calling jq just once.