#!/usr/bin/env python2.7

import docker,sys,os

def getsize(path):
    """
    return human readable filesize given path
    """
    try:
        return e.strerror

    for unit in ['B','KB','MB','GB','TB']:
        if abs(size) < 1024.0:
            return "%3.1f%s" % (size, unit)
        size /= 1024.0

def main():
    c = docker.Client(base_url='tcp://127.0.0.1:4243')
    c_names = [ i['Names'][0].strip('/') for i in c.containers(all=True) ]

    min_space = 4
    max_space = sorted(len(n) for n in c_names)[-1] + 5

    print('CONTAINER_ID%sNAME%sLOGSIZE' % \
            (min_space * ' ',(max_space - min_space) * ' '))
    for name in c_names:
        i = c.inspect_container(name)
        c_dir = i['HostnamePath'].replace('/hostname', '')
        c_logfile = c_dir + '/' + i['Id'] + '-json.log'
        print('%s%s%s%s%s' % \
                (i['Id'][:12],
                 min_space * ' ',
                 name,
                 (max_space - len(name)) * ' ',
                 getsize(c_logfile)))

if __name__ == '__main__':
    main()