Modify template file on the fly and post it to server using curl?

Question

I have below input temp.txt file which I need to post it using curl -

{
  "query":"\n{\n  data(clientId: 1234, filters: [{key: \"o\", value: 100}], key: \"world\") {\n    title\n    type\n    pottery {\n      text\n      pid\n      href\n      count\n      resource\n    }\n  }\n}"
}

Below is how I am sourcing the file and posting it to server. Everything works fine without any issues.

curl 'url' \
  -H 'Accept-Encoding: gzip, deflate, br' \
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -H 'Connection: keep-alive' -H 'DNT: 1' \
  -H 'Origin: url' \
  --data-binary "@/Users/david/Downloads/temp.txt" \
  --compressed \
  --silent \
  --output /dev/null \
  --write-out '%{http_code}'

Now I am trying to post above curl request for multiple clientId's as shown in my above temp.txt file. I have like 10 different clientId's for which I want to post the same json but for each different clientId.

Is there any way I can make this generic enough so that it can read clientId's from some other file say - clientIds.txt which will have list of all clientId's and then it can post each json for its own clientId to the server?

I can have content in clientIds.txt file as -

1234
9812
6751
2181

Now I should make json like this for each clientId and post it to server. Is this possible to do by any chance? I can have temp.txt file as the template where clientId field can be filled from clientIds.txt file and then we can post it out to the server but I am not sure how we can do this in shell script?

For clientId: 9812

{
   "query":"\n{\n  data(clientId: 9812, filters: [{key: \"o\", value: 100}], key: \"world\") {\n    title\n    type\n    pottery {\n      text\n      pid\n      href\n      count\n      resource\n    }\n  }\n}"
}

For clientId: 6751

{
   "query":"\n{\n  data(clientId: 6751, filters: [{key: \"o\", value: 100}], key: \"world\") {\n    title\n    type\n    pottery {\n      text\n      pid\n      href\n      count\n      resource\n    }\n  }\n}"
}

For clientId: 2181

{
   "query":"\n{\n  data(clientId: 2181, filters: [{key: \"o\", value: 100}], key: \"world\") {\n    title\n    type\n    pottery {\n      text\n      pid\n      href\n      count\n      resource\n    }\n  }\n}"
}

Update

I tried something like this in my bash script but I cannot make it work as I am confuse on few things. How can I replace my template json file for each clientId and then post that json to the server using curl -

while IFS= read -r line; do
    # this below line isn't working
    cat temp.txt | sed 's/clientId:[^ ]*/clientId:$line/'
    # and how should I use new json to post curl
done < clientIds.txt

Answer 1

You could create a bash file that loops through that list:

#!/bin/bash
for word in $(< clientIds.txt)
do
    echo "curl $word"
done

replace the echo curl command with your working curl command, but the $word variable is the next clientId in order

Or just ran that code-block directly in the cli.