#!/usr/bin/python2

#
# disk monitor
#

#imports
import os


class diskmon(object):
    """collect information about local partitions"""

    #constructor
    def __init__(self):
        pass

    def gather(self):
        """gather the actual information"""

        self.partitions = [] #information about all partitions (list of lists)
        part = [] #information about one partition
        uuids = os.listdir("/dev/disk/by-uuid") #folder contains symlinks to the actual disk devices 
        for uuid in uuids: #write /dev/names as keys and uuids as values in the dictionary
            part.append("/dev/" + os.readlink("/dev/disk/by-uuid/" + uuid)[6:])
            part.append(uuid)

            #getting mountpoint for partition from mtab
            mtab = open("/etc/mtab", "r")
            #for line in
            for line in mtab:
                if part[0] in line:
                    part.append(line.split()[1])
                    part.append(line.split()[2])
                    #getting block infos
                    if os.path.ismount(part[2]):
                        fs = os.statvfs(part[2])
                        part.append(fs.f_bsize) #blocksize
                        part.append(fs.f_blocks) #total blocks
                        part.append(fs.f_bavail) #free blocks
                        break

            mtab.close()

            #adding partition to list
            self.partitions.append(part)


#output
if __name__ == "__main__":
    diskmoninstance = diskmon()
    diskmoninstance.gather()
    #print diskmoninstance.partitions
    for partition in diskmoninstance.partitions:
        #print "device:\t\t" + str(partition[0]) + "\nuuid:\t\t" + str(partition[1]) + "\nmountpoint:\t" + str(partition[2]) + "\nfilesystem:\t" + str(partition[3]) + "\nblocksize:\t" + str(partition[4]) + "\ntotal blocks:\t" + str(partition[5]) + "\nfree blocks:\t" + str(partition[6]) + "\n"

        for item in partition:
            print item



#end of file