Web App Log Visibility for Google Apps Script

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Web App Log Visibility for Google Apps Script

In order to determine whether the log of Web Apps created by Google Apps Script can be shown in the log, the following steps were performed:

Steps

1. Create a new Google Apps Script project.
2. Add the following script: function doGet(e) { Logger.log(JSON.stringify(e)); return HtmlService.createHtmlOutput('<b>Hello world!</b>'); }
3. Deploy Web Apps as Execute as: Me and Who has access to the app: Anyone .
4. Share the Google Apps Script project as Anyone with the link.
5. Open a browser in incognito mode. Ensure you are not logged into a Google account.
6. Access the web app and confirm that "Hello world!" is displayed.
7. Check the log at "Executions." When the "REFRESH" button is clicked multiple times, "No logs are available for this execution" is shown.
8. Close the browser.
9. Open a browser in incognito mode. Log in to a Google account that is different from the owner of the Google Apps Script project.
10. Access the web app and confirm that "Hello world!" is displayed.
11. Check the log at "Executions." The following log entry is shown: {"contentLength":-1,"contextPath":"","parameters":{},"queryString":"","parameter":{}}
12. Close the browser.
13. Remove the sharing settings for the Google Apps Script project.
14. Open a browser in incognito mode. Log in to a Google account that is different from the owner of the Google Apps Script project.
15. Access the web app and confirm that "Hello world!" is displayed.
16. Check the log at "Executions." The log is not shown.

Result

Based on these results, under the following conditions:

• Deploy Web Apps as Execute as: Me and Who has access to the app: Anyone.
• Access the web app using a browser.

The following outcomes are observed:

Logged into Google	Share Google Apps Script Project	Log Visibility
No	No	No
No	Yes	No
Yes	No	No
Yes	Yes	Yes

Note

• This is for the discussion at here.