This adds initial symlink support to the file resource, and while it is
hopefully correct, there are always sneaky edge cases around symlinks
and security, so review and tests are highly encouraged!
These were really just stubs so that I could prove out the reactive
model very early, and I don't think they're really used anywhere.
I'm also not really using the yamlgraph frontend. If someone wants any
of that code, step up, or it will rot even more.
A subtlety about the engine is that while it guarantees CheckApply
happens in the listed edge-based dependency order, it doesn't stop
Watch from starting up in whatever order it wants to. As a result, we
can prematurely error since the docker service isn't running yet. It may
in fact be in the process of getting installed and started by mgmt
before we then try and use this resource! As a result, let it error once
for free and wait for CheckApply to get going before we start again.
Keep in mind, Watch has to use the .Running() method once to tell
CheckApply to do its initial event. So this concurrency is complex!
It's unclear if this is a bug in mgmt or not, but I'm leaning towards
not, particularly since there isn't an obvious way to fix it.
They made the assumption that there would be a based docker service
installed at Init which could not be guaranteed. Also use the internal
metaparameter timeout feature instead of private counters.
This adds some simplistic configuration management / provisioning
functionality to this virt:builder resource which makes it easier to
kick off special functionality that we might want to build.
It would be a likely mistake to create a self-referential frag, and mgmt
would spin forever updating the file... We probably don't want this, so
let's just catch this case in Validate.
Of course you could get around this with multiple files, and a fancier
search could statically check the graph, but the goal isn't to prevent
any bad code, since that's not likely to be possible.
Instead of constantly making these updates, let's just remove the year
since things are stored in git anyways, and this is not an actual modern
legal risk anymore.
I regressed here when patching this. Here's the fix. Would be beautiful
to have hardware to run end-to-end testing on. If you want to sponsor
this, please let me know!
Some clients would DECLINE if this was not set. This was reproduced my
using the stock coredhcp DHCPv4 server and disabling the netmask plugin.
One of the clients that would DECLINE is a Lenovo ThinkCentre m90n doing
a UEFI (PXE) netboot.
This was found in 1327752725 and is
hopefully now completely fixed!