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#!/usr/bin/python
import argparse, glob, operator, os, random, shutil, subprocess, sys, signal
shouldQuit = False
def getFreeSpaceForDir(dir):
stats = os.statvfs(dir)
return (stats.f_bavail * stats.f_frsize)
def getFreePercentForDir(dir):
stats = os.statvfs(dir)
total = (stats.f_blocks)
avail = (stats.f_bavail)
return (total - avail) / float(total)
def getFileSize(fullPath):
return os.path.getsize(fullPath)
def sizeof_fmt(num, suffix='B'):
for unit in ['','Ki','Mi','Gi','Ti','Pi','Ei','Zi']:
if abs(num) < 1024.0:
return "%3.1f %s%s" % (num, unit, suffix)
num /= 1024.0
return "%.1f %s%s" % (num, 'Yi', suffix)
def signal_handler(signal, frame):
print("\nWill quit when file has been moved.\nMoving File...")
global shouldQuit
shouldQuit = True
if __name__ == '__main__':
parser = argparse.ArgumentParser()
parser.add_argument('-c', '--checkonly', action='store_true', help="Check only, don't move any files.")
cmdargs = parser.parse_args()
SGs = []
SGDIRS = []
SGgrp = "Default"
SGselectdata = []
signal.signal(signal.SIGINT, signal_handler)
print("\nEmpty a MythTV Storage Group Directory\nPress Ctrl+C to quit")
# Get Storage Groups from MythDB
try:
from MythTV import MythDB
mythDB = MythDB()
records = mythDB.getStorageGroup()
recs = mythDB.getStorageGroup()
except:
print("Couldn't connect to MythTV database.")
sys.exit(1)
# get list of non duplicate SGs
for record in records:
SGs.append(record.groupname)
SGs=list(set(SGs))
# Move Default to top of list
if "Default" in SGs:
SGs.remove("Default")
SGs.insert(0,"Default")
# ask user which SG to use
print("\n------------------------------------------------")
print("Storage Groups:")
for i,sg in enumerate(SGs):
print(str(i+1) + ": " + sg)
try:
SGselect=input("\nEnter the number of the storage group to use (default 1): ") or 1
SGselect=int(SGselect)
if SGselect > len(SGs) or SGselect < 1:
SGselect=int("e")
except ValueError:
print("You must enter a number between 1 and " + str(len(SGs)) + ". Exiting.")
sys.exit(0)
SGgrp=SGs[SGselect-1]
# Get Storage Group directories
for record in recs:
if record.groupname == SGgrp:
dirname = record.dirname
SGDIRS.append(dirname)
# If there are less than 2 directories defined bail as we can't move anything
if len(SGDIRS) < 2:
print("There are less than 2 directories defined. Exiting.")
sys.exit(0)
while not shouldQuit:
SGDIRSdata = []
print("\n------------------------------------------------")
print("'" + SGgrp + "' Storage Group Directories - Percent Used:")
SGcnt=0
# Get percent free and size free
for directory in SGDIRS:
# Check if SG path exists
if not os.path.exists(directory):
print(" " + directory + " - Not Mounted")
continue
# Check if SG has data files to move
if len(glob.glob1(directory,"*.ts")) or len(glob.glob1(directory,"*.mpg")) or len(glob.glob1(directory,"*.nuv")) or len(glob.glob1(directory,"*.jpg")):
freePcent = getFreePercentForDir(directory)
freeSize = getFreeSpaceForDir(directory)
SGDIRSdata.append([directory, freePcent, freeSize])
SGcnt=SGcnt+1
print("%s: %s - %.2f%%" % (SGcnt, directory, freePcent * 100))
else:
# Check if the selected SG dir has no data files exit
if SGselectdata and SGselectdata[0] == directory:
print("\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting")
sys.exit(0)
# Exit if no SGs with data found
if SGcnt is 0:
print("\n'" + SGgrp + "' Storage Group directories have no files to move. Exiting.")
sys.exit(0)
# Ask user to select which SG to empty if not already selected
if not SGselectdata:
try:
SGDIRselect=int(input("\nEnter the number of the storage group directory to empty: "))
if SGDIRselect > SGcnt or SGDIRselect < 1:
SGDIRselect=int("e")
except ValueError:
print("You must enter a number between 1 and %s. Exiting." %SGcnt)
sys.exit(0)
SGselectdata=SGDIRSdata[SGDIRselect-1]
# Sort data on percent free
SGDIRSdata = sorted(SGDIRSdata, reverse=True, key=operator.itemgetter(1))
leastFull = SGDIRSdata[-1]
# Make sure leastFull and SGselectdata are not the same dir
if leastFull[0] == SGselectdata[0]:
leastFull = SGDIRSdata[-2]
# Get random file from user selected dir
fileToMove = random.choice([f for f in os.listdir(SGselectdata[0]) if f.endswith(".ts") or f.endswith(".mpg") or f.endswith(".nuv") or f.endswith(".jpg")])
filePathToMove = SGselectdata[0] + "/" + fileToMove
# Check that the file isn't too big for least used dir
fileSize = getFileSize(filePathToMove)
if (fileSize > getFreeSpaceForDir(leastFull[0])):
# Too big to move
print(filePathToMove + " is too big to move to " + leastFull[0])
sys.exit()
print("------------------------------------------------")
print("Move File:")
print(" " + filePathToMove)
print(" Size: " + sizeof_fmt(os.path.getsize(filePathToMove)))
print("To:")
print(" " + leastFull[0])
print(" Available: " + sizeof_fmt(getFreeSpaceForDir(leastFull[0])))
# Move file
if cmdargs.checkonly:
print("------------------------------------------------")
print("Check Only option was used. No files were moved.")
shouldQuit = True
else:
print("------------------------------------------------")
print("Checking System Status...")
if subprocess.call(["/usr/bin/python2", "/usr/LH/bin/idle.py", "-s"]):
print(" System is busy. The file will not be moved.")
sys.exit()
print("Moving File...")
try:
shutil.move(filePathToMove, leastFull[0])
# eg. src and dest are the same file
except shutil.Error as e:
a=input("\n%s. Overwrite destination (y/n)? " % e)
if a == "y" or a == "Y":
os.remove(leastFull[0] + "/" + fileToMove)
shutil.move(filePathToMove, leastFull[0])
else:
b=input("\nRemove %s (y/n)? " % filePathToMove)
if b == "y" or b == "Y":
os.remove(filePathToMove)
# eg. source or destination doesn't exist
except IOError as e:
print(('Error: %s' % e.strerror))
# Remove png files for Default & LiveTV SGs
if SGgrp == "Default" or SGgrp == "LiveTV":
print("------------------------------------------------")
print("Removing png Files:")
pngFiles = glob.glob(filePathToMove + "*.png")
for p in pngFiles:
os.remove(p)
print(" " + p)
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