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

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

            try: self.part[2]
            except IndexError:
                for i in range(4):
                    self.part.append("not mounted")

            self.mtab.close()

            #adding partition to list
            self.partitions.append(self.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"




#end of file