Google Apps Script PropertiesService - Confused by unreliable Executions logging & editor debugging

Question

I find PropertiesService to be unreliable, but probably I'm just not familiar with Google Apps Script or Stackdriver and made a mistake or assumed something here that may caused the problem.

Here's the script:

sp = PropertiesService.getScriptProperties()
sp.setProperties({
  'somekey': 'value'
})
props = sp.getProperties()

console.log(props.toString())

And here's the logs before I wrote this SO question:

Type     Start Time                 Duration  Status     Stackdriver Log
Trigger  Oct 9, 2020, 11:19:07 PM   0.541 s   Completed  Debug [object Object]
Editor   Oct 9, 2020, 11:11:43 PM   0 s       Unknown    Debug [object Object]
Editor   Oct 9, 2020, 11:08:09 PM   0 s       Unknown    Debug [object Object], ScriptProperties
Editor   Oct 9, 2020, 11:05:16 PM   0 s       Unknown    Debug [object Object], ScriptProperties   

The one marked as Editor type is manual debug runs from apps script web IDE, I set onTrigger every 15mins before I added those PropertiesServices lines. Whenever I check the Execution log page in each execution, it takes minutes to get the log result, and just now, more than half an hour in the future, I re-checked and those Unknown status logs are marked Completed and all under 0.5s.

Is this just a glitch? If it's not normal or I made a mistake/wrong assumption, what am I supposed to do to ensure I don't experience this kind of unpredictable results?

Why don't I get strings from the props key value pair?

Answer 1

• For relatively better and reliable logging, Use Stackdriver directly(ie, View> Stackdriver logging) rather than from the "executions" page in the dashboard. To do this, you need to switch Google cloud project from default to standard by setting a custom project number in Resources > Cloud Platform project > Change project.

• When logging objects, You must always JSON.stringify the object before feeding it to console . props.toString() will only return [object Object] as that is it's internal structure.

 /*<ignore>*/console.config({maximize:true,timeStamps:false,autoScroll:false});/*</ignore>*/ const props = {a:1}; console.log(props.toString());//[object Object] console.log(JSON.stringify(props));//{"a":1}

 <:-- https.//meta.stackoverflow:com/a/375985/ --> <script src="https.//gh-canon.github.io/stack-snippet-console/console.min.js"></script>

Answer 2

This seems to work just fine:

function testprops() {
  let sp = PropertiesService.getScriptProperties();
  sp.setProperties({'somekey': Utilities.formatDate(new Date(), Session.getScriptTimeZone(), "yyyy:MM:dd HH:mm:ss")});
  let props = sp.getProperties();
  SpreadsheetApp.getUi().showModelessDialog(HtmlService.createHtmlOutput(props.somekey), "View Properties");
}