labeling - Reading and setting label settings in PyQGIS 3?

How do I read and set label style settings in QGIS 3.0.

For instance, in QGIS 2.18 i had done:

props = {
    "labeling": "pal",
    "labeling/enabled": "true",

    "labeling/fontFamily": "Arial",
    "labeling/fontSize": "12",
    "labeling/fieldName": "Name",
    "labeling/bufferDraw": True,
    "labeling/bufferSize": "1",
    "labeling/bufferColor": "white"
    }
for k, v in props.items():
    my_layer.setCustomProperty(k, v)

How do I do the equivalent in QGIS 3.0?

Answer

I found the answer for QGIS 3.0:

layer_settings  = QgsPalLayerSettings()
text_format = QgsTextFormat()

text_format.setFont(QFont("Arial", 12))
text_format.setSize(12)

buffer_settings = QgsTextBufferSettings()

buffer_settings.setEnabled(True)
buffer_settings.setSize(1)
buffer_settings.setColor(QColor("white"))

text_format.setBuffer(buffer_settings)
layer_settings.setFormat(text_format)

layer_settings.fieldName = "my_attribute"
layer_settings.placement = 2


layer_settings.enabled = True

layer_settings = QgsVectorLayerSimpleLabeling(layer_settings)
my_layer.setLabelsEnabled(True)
my_layer.setLabeling(layer_settings)
my_layer.triggerRepaint()