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fence_bladecenter.py

#!/usr/bin/python

#####
##
## The Following Agent Has Been Tested On:
##
##  Model                 Firmware
## +--------------------+---------------------------+
## (1) Main application   BRET85K, rev 16  
##     Boot ROM           BRBR67D, rev 16
##     Remote Control     BRRG67D, rev 16
##
#####

import sys, re, pexpect, exceptions
sys.path.append("@FENCEAGENTSLIBDIR@")
from fencing import *

#BEGIN_VERSION_GENERATION
RELEASE_VERSION="New Bladecenter Agent - test release on steroids"
REDHAT_COPYRIGHT=""
BUILD_DATE="March, 2008"
#END_VERSION_GENERATION

def get_power_status(conn, options):
      try:
            node_cmd = "system:blade\[" + options["-n"] + "\]>"

            conn.send("env -T system:blade[" + options["-n"] + "]\r\n")
            i = conn.log_expect(options, [ node_cmd, "system>" ] , int(options["-Y"]))
            if i == 1:
                  ## Given blade number does not exist
                  if options.has_key("-M"):
                        return "off"
                  else:
                        fail(EC_STATUS)
            conn.send("power -state\r\n")
            conn.log_expect(options, node_cmd, int(options["-Y"]))
            status = conn.before.splitlines()[-1]
            conn.send("env -T system\r\n")
            conn.log_expect(options, options["-c"], int(options["-Y"]))
      except pexpect.EOF:
            fail(EC_CONNECTION_LOST)
      except pexpect.TIMEOUT:
            fail(EC_TIMED_OUT)

      return status.lower().strip()

def set_power_status(conn, options):
      action = {
            'on' : "powerup",
            'off': "powerdown"
      }[options["-o"]]

      try:
            node_cmd = "system:blade\[" + options["-n"] + "\]>"

            conn.send("env -T system:blade[" + options["-n"] + "]\r\n")
            conn.log_expect(options, node_cmd, int(options["-Y"]))
            conn.send("power -"+options["-o"]+"\r\n")
            conn.log_expect(options, node_cmd, int(options["-Y"]))
            conn.send("env -T system\r\n")
            conn.log_expect(options, options["-c"], int(options["-Y"]))
      except pexpect.EOF:
            fail(EC_CONNECTION_LOST)
      except pexpect.TIMEOUT:
            fail(EC_TIMED_OUT)

def get_blades_list(conn, options):
      outlets = { }
      try:
            node_cmd = "system>"

            conn.send("env -T system\r\n")
            conn.log_expect(options, node_cmd, int(options["-Y"]))
            conn.send("list -l 2\r\n")
            conn.log_expect(options, node_cmd, int(options["-Y"]))

            lines = conn.before.split("\r\n")
            filter_re = re.compile("^\s*blade\[(\d+)\]\s+(.*?)\s*$")
            for x in lines:
                  res = filter_re.search(x)
                  if res != None:
                        outlets[res.group(1)] = (res.group(2), "")

      except pexpect.EOF:
            fail(EC_CONNECTION_LOST)
      except pexpect.TIMEOUT:
            fail(EC_TIMED_OUT)

      return outlets

def main():
      device_opt = [  "help", "version", "agent", "quiet", "verbose", "debug",
                  "action", "ipaddr", "login", "passwd", "passwd_script",
                  "cmd_prompt", "secure", "port", "identity_file", "separator",
                  "inet4_only", "inet6_only", "ipport",
                  "power_timeout", "shell_timeout", "login_timeout", "power_wait", "missing_as_off" ]

      atexit.register(atexit_handler)

      all_opt["power_wait"]["default"] = "10"
      all_opt["cmd_prompt"]["default"] = "system>"

      options = check_input(device_opt, process_input(device_opt))

      docs = { }        
      docs["shortdesc"] = "Fence agent for IBM BladeCenter"
      docs["longdesc"] = "fence_bladecenter is an I/O Fencing agent \
which can be used with IBM Bladecenters with recent enough firmware that \
includes telnet support. It logs into a Brocade chasis via telnet or ssh \
and uses the command line interface to power on and off blades."
      docs["vendorurl"] = "http://www.ibm.com"
      show_docs(options, docs)
      
      ##
      ## Operate the fencing device
      ######
      conn = fence_login(options)
      result = fence_action(conn, options, set_power_status, get_power_status, get_blades_list)

      ##
      ## Logout from system
      ######
      try:
            conn.send("exit\r\n")
            conn.close()
      except exceptions.OSError:
            pass
      except pexpect.ExceptionPexpect:
            pass
      
      sys.exit(result)

if __name__ == "__main__":
      main()

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