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I am working on a feature for our webapp where we create google drive files from our server
Drive service = getServiceForLoginUser();
com.google.api.services.drive.model.File fileMetadata = new com.google.api.services.drive.model.File();
fileMetadata.setTitle(getDefaultName());
fileMetadata.setMimeType(APPLICATION_VND_GOOGLE_APPS_DRIVE_SDK);
com.google.api.services.drive.model.File.Thumbnail thumbnail = buildThumbnail(driveType);
fileMetadata.setThumbnail(thumbnail);
com.google.api.services.drive.model.File googleFile = service.files().insert(fileMetadata)
.setFields("id")
.execute();
I have configured Drive UI Integration to trigger New and Open URL flows from google drive.I have also published a chrome app with following manifest.
"name" : "classflowtest",
"version" : "3.5",
"manifest_version" : 2,
"icons": {
"128": "icon_128.png"
},
"description" : "description_text",
"container" : "GOOGLE_DRIVE",
"api_console_project_id" : "146081768739",
"gdrive_mime_types": {
"http://drive.google.com/intents/opendrivedoc": [
{
"type": ["image/png", "image/jpeg", "image/gif", "html","application/vnd.google.drive.ext-type.png",
"application/vnd.google.drive.ext-type.jpg","application/vnd.google.drive.ext-type.gif","application/vnd.google.drive.ext-type.html"],
"href": "https://mywebappurl",
"title" : "Open",
"disposition" : "window"
}
]
},
"app" : {
"launch" : {
"web_url" : "mywebappurl"
}
}
So now I can trigger New and Open flows in drive successfully. In New flow I create first a resource in our db and then I create a file in google drive from my application server. So every entry I create in google drive has a representation in our db as well. My issue is now if I rename or delete the file in google drive how do I get those events so that I can make the necessary changes in our DB ?

Check the Changes: list if it can help you. It will lists all the changes in your drive. But is is difficult to filter the results. To get the deleted files, you must specify the includeRemoved parameter to true. So it is easier to get the files if you know its fileID before you rename or delete it.
I found in this SO question that someone use Apps Activity API to solve this problem.
For more information, check this thread.