How to solve google app script timeout issue - google-apps-script

Question

My google app script stop work after a certain times. the following code changes the file permission. in my folder there is like 10K files. when i run the script after changing 1~2K file sharing permission script stop work. is there anyway to solve the issue?
function myFunction() {
var folderId = "ID";
var files = DriveApp.getFolderById(folderId).getFiles();
var result = [];
while (files.hasNext()) {
var file = files.next();
file.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.VIEW);
var temp = {
file_name: file.getName(),
url: "http://drive.google.com/uc?export=view&id=" + file.getId(),
};
result.push(temp);
};
}

Answer 1

There are several workarounds, from upgrading your account to grant access to longer timeouts, you could also make the script work with a cache service and store the state of the iteration before the timeout, then run again the script with this value stored on the cache.
Although, all of this may be to much for what you are attempting to: permissions on Drive have inheritance.
What does this mean? This means that if you change the permission settings on any folder you'll override the permissions of each file on that folder.
In summary, you really do not need to make any iteration thru all the files, change the permissions for that folder and you are done.
Check this docs in case of doubt.
A working code to change your folder permission and all its contained files:
function myFunction() {
var folder = DriveApp.getFolderById("YOUR_FOLDER_ID");
folder.setSharing(DriveApp.Access.ANYONE_WITH_LINK, DriveApp.Permission.VIEW);
}
This works, but due to the large number of files on your folder propagation may take some time, up to several hours, be patient and check it tomorrow.