def create_tar_archive(config, session_id, device_code, tar_xml_doc):
ref_file_name = session_id+'-'+device_code+'-referenced-items.xml'
tar_name = session_id+'-'+device_code+'.tar'
tar_path = ltoUtil.get_tar_build_dir(config)+'/'+tar_name
block_size_bytes = int(config.get('Tape', 'block_size_bytes'))
blocking_factor = block_size_bytes/512
filelist = []
for file in os.listdir(ltoUtil.get_tar_build_dir(config)):
filelist.append(file)
filelist.remove(ref_file_name)
filelist.sort()
filelist_str = ref_file_name+' '+string.join(filelist, ' ')
print '\nCreating tar archive: '+tar_path
p = subprocess.Popen('tar -cvR -b '+str(blocking_factor)+' --format='+ltoUtil.get_tar_format(config)+' -C '+ltoUtil.get_tar_build_dir(config)+' -f '+tar_path+' '+filelist_str, shell=True, stdout=subprocess.PIPE)
stdout_value = p.stdout.readlines()
del stdout_value[0]
for line in stdout_value:
update_block_xml_attributes(tar_xml_doc, line, config)
update_tar_xml_root_attributes(config, tar_xml_doc, tar_name)
def generate_par2_tar(config, new_filepath):
par2_redundancy = config.getint('Par2', 'redundancy')
par2_numfiles = config.getint('Par2', 'num_files')
par2_memory = config.getint('Par2', 'memory')
fn = ltoUtil.get_filename(new_filepath)
path = ltoUtil.get_path(new_filepath)
print 'Generating PAR2 files for '+fn+'\n'
p = subprocess.Popen('par2 create -r'+str(par2_redundancy)+' -m'+str(par2_memory)+' -n'+str(par2_numfiles)+' '+new_filepath, shell=True)
sts = os.waitpid(p.pid, 0)
par2files = []
for f in os.listdir(path):
if str(f).startswith(fn) and str(f).endswith('.par2'):
par2files.append(f)
par2filesstr = string.join(par2files, ' ')
p = subprocess.Popen('tar -c --format='+ltoUtil.get_tar_format(config)+' -C '+path+' -f '+new_filepath+'.par2.tar '+par2filesstr, shell=True)
sts = os.waitpid(p.pid, 0)
for p in par2files:
os.remove(os.path.join(path, p))
