Batch processing with Google Calendar V3 API - google-calendar-api

Question

I've been working with the new google Calendar V3 API and I've coded all my class methods to process Adds, Updates, retrievals etc but I was wondering if there is a way to send a batch of adds + updates + deletes all at once rather than sending each request separately and possible exceeding the trans/sec threshold. I understand the .Batch method has been depreciated in V3 and I found another methodology that uses web services that will notify a client that changes are ready but I'm trying to do this from a .NET Winform application so it needs to be something initiated from the client and not dependent upon online services or a PUSH methodology.
Regards,
Kerry

Answer 1

I got this to work using the BatchRequest object:
Dim initializer As New BaseClientService.Initializer()
initializer.HttpClientInitializer = credential
initializer.ApplicationName = "My App"
Dim service = New CalendarService(initializer)
'fetch the calendars
Dim list = service.CalendarList.List().Execute().Items()
'get the calendar you want to work with
Dim calendar = list.First(Function(x) x.Summary = "{Calendar Name}")
Dim br As New Google.Apis.Requests.BatchRequest(service)
'make 5 events
For i = 1 To 5
'create a new event
Dim e As New [Event]
'set the event properties
e.Summary = "Test Event"
e.Description = "Test Description"
e.Location = "Test Location"
...
'make a request to insert the event
Dim ins As New InsertRequest(service, e, calendar.Id)
'queue the request
br.Queue(Of Dummy)(ins, AddressOf OnResponse)
Next
'execute the batch request
Dim t = br.ExecuteAsync()
'wait for completion
t.Wait()
For some reason, you can't have a deferred request without specifying a callback to the Queue method, and that method requires a generic type parameter. So I defined the following:
Class Dummy
End Class
Sub OnResponse(content As Dummy, err As Google.Apis.Requests.RequestError, index As Integer, message As System.Net.Http.HttpResponseMessage)
End Sub
With this in place, the batch inserts worked fine.