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Contents
module RhevmDiskProbe
DESC_MOD = "RhevmDescriptor"
QCOW_MOD = "QcowDisk"
RAW_MOD = 'RawDisk'
def self.probe(ostruct)
return nil unless ostruct.fileName
ext = File.extname(ostruct.fileName).downcase
return nil unless ext.length.zero?
format = ostruct.format.to_s.downcase
return RAW_MOD if format == 'raw'
return QCOW_MOD if format == 'cow'
descriptor_file = ostruct.fileName + '.meta'
return nil unless File.exist?(descriptor_file)
# If this ostruct already has a descriptor don't bother checking.
# NOTE: If it does have a descriptor, we're coming from RhevmDescriptor.rb
# trying to open a disk - so don't regress infinitely.
if ostruct.Descriptor.nil?
# Get descriptor metadata
f = File.open(descriptor_file, "r")
descriptor = f.read; f.close
if descriptor.include?('EOF')
ostruct.Descriptor = descriptor
desc = parseDescriptor(descriptor)
return RAW_MOD if desc[:format].to_s.include?('RAW')
return QCOW_MOD if desc[:format].to_s.include?('COW')
return DESC_MOD
end
else
desc = parseDescriptor(ostruct.Descriptor)
return RAW_MOD if desc[:format].to_s.include?('RAW')
return QCOW_MOD if desc[:format].to_s.include?('COW')
end
nil
end
def self.parseDescriptor(descriptor)
desc = {}
descriptor.each_line do |line|
line.strip!
break if line == 'EOF'
next unless line.include?('=')
key, *value = line.split('=')
desc[key.downcase.to_sym] = value = value.join('=')
end
desc
end
end # module RhevmDiskProbe
Version data entries
66 entries across 66 versions & 1 rubygems