Golang Operation.NewPost Examples

Example #1

File: factory_service_context.go Project: vmware/xenon

// handlePost calls out to the factory service implementation's POST handler,
// if it exists, and waits for completion. If this runs and completes without
// error, the returned body is passed to the start operation for the service
// created by this factory.
func (f *FactoryServiceContext) handlePost(ctx context.Context, op *operation.Operation) {
	var err error
	var sd *common.ServiceDocument

	if h, ok := f.h.(PostHandler); ok {
		// Run the factory service's POST handler and wait for completion.
		err = op.CreateChild(ctx).Go(ctx, h.HandlePost).Wait()
		if err != nil {
			op.Fail(err)
			return
		}
	}

	doc := f.h.CreateDocument()
	err = op.DecodeBody(doc)
	if err != nil && err != io.EOF {
		op.Fail(err)
		return
	}

	sd = doc.GetServiceDocument()
	sd.SelfLink = path.Join(f.SelfLink(), uuid.New())
	op.SetBody(doc)

	buf, err := op.EncodeBodyAsBuffer()
	if err != nil {
		op.Fail(err)
		return
	}

	// Start child service at service document's selflink
	startOp := op.NewPost(ctx, uri.Extend(uri.Local(), sd.SelfLink), buf)
	f.Host().StartService(startOp, f.h.CreateService())
	err = startOp.Wait()
	if err != nil {
		op.Fail(err)
		return
	}

	op.Complete()
}