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"""
A cobbler distribution. A distribution is a kernel, and initrd, and potentially
some kernel options.
Michael DeHaan <mdehaan@redhat.com>
"""
import utils
import item
import weakref
import os
class Distro(item.Item):
def __init__(self,config):
"""
Constructor. Requires a back reference to the Config management object.
"""
self.config = config
self.clear()
def clear(self):
"""
Reset this object.
"""
self.name = None
self.kernel = None
self.initrd = None
self.kernel_options = ""
def from_datastruct(self,seed_data):
"""
Modify this object to take on values in seed_data
"""
self.name = seed_data['name']
self.kernel = seed_data['kernel']
self.initrd = seed_data['initrd']
self.kernel_options = seed_data['kernel_options']
return self
def set_kernel(self,kernel):
"""
Specifies a kernel. The kernel parameter is a full path, a filename
in the configured kernel directory (set in /etc/cobbler.conf) or a
directory path that would contain a selectable kernel. Kernel
naming conventions are checked, see docs in the utils module
for find_kernel.
"""
if utils.find_kernel(kernel):
self.kernel = kernel
return True
utils.set_error("no_kernel")
return False
def set_initrd(self,initrd):
"""
Specifies an initrd image. Path search works as in set_kernel.
File must be named appropriately.
"""
if utils.find_initrd(initrd):
self.initrd = initrd
return True
utils.set_error("no_initrd")
return False
def is_valid(self):
"""
A distro requires that the kernel and initrd be set. All
other variables are optional.
"""
for x in (self.name,self.kernel,self.initrd):
if x is None: return False
return True
def to_datastruct(self):
"""
Return a serializable datastructure representation of this object.
"""
return {
'name': self.name,
'kernel': self.kernel,
'initrd' : self.initrd,
'kernel_options' : self.kernel_options
}
def printable(self):
"""
Human-readable representation.
"""
kstr = utils.find_kernel(self.kernel)
istr = utils.find_initrd(self.initrd)
if kstr is None:
kstr = "%s (NOT FOUND!)" % self.kernel
elif os.path.isdir(self.kernel):
kstr = "%s (FOUND BY SEARCH)" % kstr
if istr is None:
istr = "%s (NOT FOUND)" % self.initrd
elif os.path.isdir(self.initrd):
istr = "%s (FOUND BY SEARCH)" % istr
buf = ""
buf = buf + "distro : %s\n" % self.name
buf = buf + "kernel : %s\n" % kstr
buf = buf + "initrd : %s\n" % istr
buf = buf + "kernel opts : %s" % self.kernel_options
return buf
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