This isn't used yet, but will be for the new-style builders (VMs on
GCE running the buildlet, started by the coordinator).
From the code's comments:
cleanUpOldVMs periodically enumerates virtual machines and deletes
any which have a "delete-at" attribute having a unix timestamp
before the current time. These VMs are created to run a single
build and should be shut down by a controlling process. Due to
various types of failures, they might get stranded. To prevent them
from getting stranded and wasting resources forever, we instead set
the "delete-at" metadata attribute on them when created to some
time that's well beyond their expected lifetime, and then this is
the backup mechanism to delete them if they get away.
Update golang/go#8639
Update golang/go#8640
Update golang/go#8642
Change-Id: I489e97926e7ab56487571c2bf0bd255cdf49570d
Reviewed-on: https://go-review.googlesource.com/2199
Reviewed-by: Burcu Dogan <jbd@google.com>
Then make the coordinator and linux environment Makefiles have
an upload target. Amusingly, this actually worked: the Docker
images now tar + compress + upload over HTTP all in a stream,
without even knowing how large the resulting tar.gz will be until
it's done uploading.
LGTM=adg
R=adg
CC=golang-codereviews
https://golang.org/cl/140200043
