tahoe-lafs/misc/spacetime/diskwatcher.py

33 lines
1019 B
Python

from axiom.item import Item
from axiom.attributes import text, integer, timestamp
class Sample(Item):
# we didn't originally set typeName, so it was generated from the
# fully-qualified classname ("diskwatcher.Sample"), then Axiom
# automatically lowercases and un-dot-ifies it to get
# "diskwatcher_sample". Now we explicitly provide a name.
typeName = "diskwatcher_sample"
# version 2 added the 'total' field
schemaVersion = 2
url = text(indexed=True)
when = timestamp(indexed=True)
total = integer()
used = integer()
avail = integer()
def upgradeSample1to2(old):
total = 0
return old.upgradeVersion("diskwatcher_sample", 1, 2,
url=old.url,
when=old.when,
total=0,
used=old.used,
avail=old.avail)
from axiom.upgrade import registerUpgrader
registerUpgrader(upgradeSample1to2, "diskwatcher_sample", 1, 2)