#!/usr/bin/python2

""" disk monitor """

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

    def __init__(self):
        self.update()

    def update(self):
        """run collection of data"""

        import os

        self.partitions = []
        uuids = os.listdir("/dev/disk/by-uuid")
        for uuid in uuids:
            part = {}
            part["device"] = str("/dev/" + os.readlink("/dev/disk/by-uuid/" + uuid)[6:])
            part["uuid"] = uuid
 
            #getting mountpoint for partition from mtab
            mtab = open("/etc/mtab", "r")
            #for line in
            for line in mtab:
                if part["device"] in line:
                    part["mountpoint"] = line.split()[1]
                    part["filesystem"] = line.split()[2]
                    #getting block infos
                    if os.path.ismount(part["mountpoint"]):
                        fs = os.statvfs(part["mountpoint"])
                        part["blocksize"] = fs.f_bsize #blocksize
                        part["total blocks"] = fs.f_blocks #total blocks
                        part["free blocks"] = fs.f_bavail #free blocks
                        break

            mtab.close()

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

#output
if __name__ == "__main__":
    diskmoninstance = diskmon()
    for partition in diskmoninstance.partitions:
        print "device:\t\t" + str(partition["device"]) + \
              "\nuuid:\t\t" + str(partition["uuid"])
        if partition.has_key("mountpoint"):
            print "mountpoint:\t" + str(partition["mountpoint"]) + \
                  "\nfilesystem:\t" + str(partition["filesystem"]) + \
                  "\nblocksize:\t" + str(partition["blocksize"]) + \
                  "\ntotal blocks:\t" + str(partition["total blocks"]) + \
                  "\nfree blocks:\t" + str(partition["free blocks"]) + "\n"
        else:
            print "\n"



#end of file