#!/usr/bin/python

import os
import re
import sys

binarypath = "/usr/sbin/sas2ircu"

if len(sys.argv) > 2:
  print 'Usage: sas2ircu-status [--nagios]'
  sys.exit(1)

nagiosmode=False
nagiosoutput=''
nagiosgoodarray=0
nagiosbadarray=0
nagiosgooddisk=0
nagiosbaddisk=0

if len(sys.argv) > 1:
  if sys.argv[1] == '--nagios':
    nagiosmode=True
  else:
    print 'Usage: sas2ircu-status [--nagios]'
    sys.exit(1)

bad=False

# Get command output
def getOutput(cmd):
  output=os.popen(cmd+' 2>/dev/null')
  lines=[]
  for line in output:
    if not re.match(r'^$',line.strip()):
      lines.append(line.strip())
  return lines

def getCtrlList():
  cmd=binarypath+' LIST'
  res=getOutput(cmd)
  list = []
  for line in res:
    if re.match('^[0-9]+.*$',line):
      ctrlnmbr,ctrlname=int(line.split()[0]),line.split()[1]
      # Check if it's a RAID controller
      cmd=binarypath+' '+str(ctrlnmbr)+' DISPLAY'
      res=getOutput(cmd)
      for line in res:
        if re.match('^RAID Support\s+:\s+Yes$',line):
          list.append([ctrlnmbr,ctrlname])
  # ie: [['0', 'SAS2008']]
  return list

def getArrayList(ctrlnmbr):
  cmd=binarypath+' '+str(ctrlnmbr)+' DISPLAY'
  res=getOutput(cmd)
  list=[]
  disklist=[]
  arrayid=-1
  arraystatus=''
  raidlevel=''
  size=''
  for line in res:
    if re.match('^IR volume [0-9]+.*$',line):
      if arrayid == -1:
        arrayid=arrayid+1
      else:
        list.append([arrayid,raidlevel,size,arraystatus,disklist])
        arrayid=arrayid+1
    if re.match('Status of volume.*$',line):
      arraystatus=line.split(':')[1].strip()
    if re.match('RAID level.*$',line):
      raidlevel=line.split(':')[1].strip()
    if re.match('Size \(in MB\)\s+.*$',line):
      size=line.split(':')[1].strip()
      size=str(int(round((float(size) / 1000))))+'G'
    if re.match('^PHY\[[0-9]+\] Enclosure#/Slot#.*$',line):
      disksid=':'.join(line.split(':')[1:]).strip()
      disksid=disksid.split(':')
      disklist.append(disksid)
  list.append([arrayid,raidlevel,size,arraystatus,disklist])
  # ie: [0, 'Okay (OKY)', 'RAID1', '1800G', [['1', '0'], ['1', '1']]]
  return list

def getDiskList(ctrlnmbr):
  cmd=binarypath+' '+str(ctrlnmbr)+' DISPLAY'
  res=getOutput(cmd)
  list=[]
  diskid=-1
  diskstatus=''
  diskmodel=''
  diskserial=''
  enclid=''
  slotid=''
  realid=['','']
  for line in res:
    if re.match('^Device is a Hard disk.*$',line) or re.match('^Device is a Enclosure services device.*$',line):
      if diskid == -1:
        diskid=diskid+1
      else:
        list.append([diskid,diskstatus,diskmodel,diskserial,realid])
        diskid=diskid+1
    if re.match('Enclosure #.*$',line):
      enclid=line.split(':')[1].strip()
    if re.match('Slot #.*$',line):
      slotid=line.split(':')[1].strip()
      realid=[enclid,slotid]
    if re.match('^State.*$',line):
      diskstatus=line.split(':')[1].strip()
    if re.match('^Model Number.*$',line):
      diskmodel=line.split(':')[1].strip()
    if re.match('^Serial No.*$',line):
      diskserial=line.split(':')[1].strip()
  # ie: [[0, 'Optimal (OPT)', 'Hitachi HUA72202', 'JK1151YAHUYAZZ', ['1', '0']], [1, 'Optimal (OPT)', 'Hitachi HUA72202', 'JK1151YAHUW1DZ', ['1', '1']]]
  list.append([diskid,diskstatus,diskmodel,diskserial,realid])
  return list


if not nagiosmode:
  print '-- Controller informations --'
  print '-- ID | Model'
  for ctrl in getCtrlList():
    print 'c'+str(ctrl[0])+' | '+ctrl[1]
  print ''

if not nagiosmode:
  print '-- Arrays informations --'
  print '-- ID | Type | Size | Status'
for ctrl in getCtrlList():
  for array in getArrayList(ctrl[0]):
    if not array[3] in ['Okay (OKY)', 'Inactive, Okay (OKY)']:
      bad=True
      nagiosbadarray=nagiosbadarray+1
    else:
      nagiosgoodarray=nagiosgoodarray+1
    if not nagiosmode:
      print 'c'+str(ctrl[0])+'u'+str(array[0])+' | '+array[1]+' | '+array[2]+' | '+array[3]
if not nagiosmode:
  print ''

if not nagiosmode:
  print '-- Disks informations'
  print '-- ID | Model | Status'
for ctrl in getCtrlList():
  for disk in getDiskList(ctrl[0]):
    # Compare disk enc/slot to array's ones
    for array in getArrayList(ctrl[0]):
      for arraydisk in array[4]: 
        if arraydisk == disk[4]:
          if not disk[1] == 'Optimal (OPT)':
            bad=True
            nagiosbaddisk=nagiosbaddisk+1
          else:
            nagiosgooddisk=nagiosgooddisk+1
          if not nagiosmode:
            print 'c'+str(ctrl[0])+'u'+str(array[0])+'p'+str(disk[0])+' | '+disk[2]+' ('+disk[3]+') | '+disk[1]

if nagiosmode:
  if bad:
    print 'RAID ERROR - Arrays: OK:'+str(nagiosgoodarray)+' Bad:'+str(nagiosbadarray)+' - Disks: OK:'+str(nagiosgooddisk)+' Bad:'+str(nagiosbaddisk)
    sys.exit(2)
  else:
    print 'RAID OK - Arrays: OK:'+str(nagiosgoodarray)+' Bad:'+str(nagiosbadarray)+' - Disks: OK:'+str(nagiosgooddisk)+' Bad:'+str(nagiosbaddisk)
else:
  if bad:
    print '\nThere is at least one disk/array in a NOT OPTIMAL state.'
    sys.exit(1)