def get_remote_mac():
"""Gets the requestors MAC address from arp cache.
This is used, when the dhcp lease file is not up-to-date soon enough
to extract the MAC address from the IP address assigned by dhcp.
"""
remote_host, remote_port = tftp.get_remote_address()
return find_mac_via_arp(remote_host)
def get_boot_image(self, params, client, remote_ip):
"""Get the boot image for the params on this rack controller.
Calls `MarkNodeFailed` for the machine if its a known machine.
"""
is_ephemeral = False
try:
osystem_obj = OperatingSystemRegistry.get_item(
params["osystem"], default=None
)
purposes = osystem_obj.get_boot_image_purposes(
params["arch"],
params["subarch"],
params.get("release", ""),
params.get("label", ""),
)
if "ephemeral" in purposes:
is_ephemeral = True
except Exception:
pass
# Check to see if the we are PXE booting a device.
if params["purpose"] == "local-device":
mac = network.find_mac_via_arp(remote_ip)
log.info(
"Device %s with MAC address %s is PXE booting; "
"instructing the device to boot locally."
% (params["hostname"], mac)
)
# Set purpose back to local now that we have the message logged.
params["purpose"] = "local"
system_id = params.pop("system_id", None)
if params["purpose"] == "local" and not is_ephemeral:
# Local purpose doesn't use a boot image so just set the label
# to "local".
params["label"] = "local"
return params
else:
if params["purpose"] == "local" and is_ephemeral:
params["purpose"] = "ephemeral"
boot_image = get_boot_image(params)
if boot_image is None:
# No matching boot image.
description = "Missing boot image %s/%s/%s/%s." % (
params["osystem"],
params["arch"],
params["subarch"],
params["release"],
)
# Call MarkNodeFailed if this was a known machine.
if system_id is not None:
d = client(
MarkNodeFailed,
system_id=system_id,
error_description=description,
)
d.addErrback(
log.err,
"Failed to mark machine failed: %s" % description,
)
else:
maaslog.error(
"Enlistment failed to boot %s; missing required boot "
"image %s/%s/%s/%s."
% (
remote_ip,
params["osystem"],
params["arch"],
params["subarch"],
params["release"],
)
)
params["label"] = "no-such-image"
else:
params["label"] = boot_image["label"]
return params
