Upload json object to Google Cloud Storage with Google Apps Script - json

Question

I'm calling an API in a Google Apps Script. The response is a json object. I'd like to send it to Google Cloud Storage.
Here is the script I wrote so far:
function uploadToGoogleCloudStorage() {
var api_response = '{ "var":"value"}'
var url = 'https://storage.googleapis.com/storage/v1/b/my_bucket_name/o/test?fields=OBJECT'.replace("OBJECT", JSON.stringify(api_response))
var response = UrlFetchApp.fetch(url, {
method: "POST"
});
}
I have the following error Exception: Invalid argument: https://storage.googleapis.com/storage/v1/b/gtm_container_export/o/test?fields="{%20\"var\":\"value\"}"
I didn't find any documentation on how to interact with Google Cloud Storage from Google Apps Script. I'm wondering if UrlFetchApp is the right way to do it or if I should activate a specific service.

Answer 1

Here is a basic example for you - your approach just needs to be modified a bit:
function uploadToGoogleCloudStorage() {
let url = "https://storage.googleapis.com/upload/storage/v1/b/[replace this with your bucket ID]/o?uploadType=media&name=my_test_json.json";
let token = "Bearer [replace this with your oauth token!]";
// this is the content of the document we will create in the bucket
let data = {
'name': 'Bob Smith',
'age': 35,
'pets': ['fido', 'fluffy']
};
let options = {
'method' : 'post',
'headers' : {
'Authorization' : token
},
'contentType': 'application/json',
// Convert the JavaScript object to a JSON string.
'payload' : JSON.stringify(data)
};
var response = UrlFetchApp.fetch(url, options);
console.log( response.getResponseCode() ); // 200 OK
console.log( response.getContentText() );
}
In this case, the file name in the bucket will be "my_test_json.json", as defined in name=my_test_json.json.
Replace [replace this with your bucket ID] with your bucket ID.
Replace [replace this with your oauth token!] with your oauth token.
If you are not familiar with tokens, that is a fairly large topic, and outside the scope of this question. But in case it helps, here are some very basic notes: To generate a test token, I used the OAuth 2.0 Playground to create a test token. I chose "Cloud Storage API" read/write scope. After step 2, I copy/pasted the access_token string out of the "response" box on the right had side of the page. This string is over 300 characters in length. This is not a production-strength solution - it's just for testing.