The feature is heavily laced with warnings and a complete lack of
promises around future compatibility. But within those parameters,
it might allow some people to do cool things.
Fixes#60.
Responding with an error makes iPXE print a misleading error message (misleading because it doesn't break the boot in any way, it just makes humans uncomfortable).
The UI is optional and need to be explicitly activated, since I
don't want existing users to suddenly have an information-spewing
thing show up on their network.
iPXE appears to have *really* poor performance (orders of magnitude worse) if
it doesn't know the length of the kernel/initrds that it's downloading. Without
this change, booting CoreOS takes longer than I've had patience to wait. With
this change, the bottleneck becomes the network transfer speed.
Fixes#10.
The main difficulty in passing a commandline as a plain string is
that you sometimes want to encode IDs into it, to tell your kernel
to fetch something via Pixiecore. Solving that problem with maps is
a bit clunky. Instead, now we use a text/template {{ ID "foo" }} to
mean "make a URL that, when fetched, reads the file "foo" from the
Booter.
Also introduces a "Trace" member to the API, for the future addition of
extremely verbose and complete tracing, to be used for bug reports. But
for now, only Log is used.
This version is still *extremely* barebones, and the unstable tag
in the README applies triple for it, but the code in its current
state is capable of booting x86 and UEFI clients correctly, and
that was hard enough to merit a snapshot checkpoint.
