qaapi/qa/tests/boot_node.py

   1 #!/usr/bin/python
   2
   3 import os
   4 import sys
   5 import signal
   6 import time
   7 import tempfile
   8 import select
   9 import base64
  10 import traceback
  11 from Test import Test
  12 from qa import utils
  13 from qa.Nodes import Node, Nodes
  14
  15 image_types = ['node-iso', 'node-usb', 'generic-iso', 'generic-usb']
  16
  17 def killqemu(pid):
  18     try:
  19         os.kill(pid, signal.SIGKILL)
  20         os.waitpid(pid,os.WNOHANG)
  21     except:
  22         pass
  23
  24 class boot_node(Test):
  25     """
  26     Attempts to boot the specified node using qemu.
  27     """
  28
  29     def state_nanny(self):
  30         hostname = self.hostname
  31         nodes = self.config.api.GetNodes(self.config.auth, [hostname], ['boot_state'])
  32         node = nodes[0]
  33         boot_state = node['boot_state']
  34         if True or self.config.verbose:
  35             utils.header("%(hostname)s boot_state is %(boot_state)s" % locals())
  36
  37         if boot_state in ['boot', 'debug']:
  38             self.exit = True
  39
  40         if self.config.verbose:
  41             if boot_state in ['boot']:
  42                 utils.header("%(hostname)s correctly installed and booted" % locals())
  43             else:
  44                 utils.header("%(hostname)s not fully booted" % locals())
  45         self.boot_state = boot_state
  46         return self.exit
  47
  48     def console_nanny(self,console_states):
  49         #ready = select.select([],[self.stdout],[],1)[1]
  50         output = 0
  51         if True or len(ready)>0:
  52             output = 1
  53             retry = True
  54             while retry:
  55                 try:
  56                     lines = self.stdout.readlines()
  57                     retry = False
  58                 except IOError, e:
  59                     pass
  60
  61             #for searchstring in console_states.keys():
  62             #    result = line.find(searchstring)
  63                 # if result... ret = console_states[searchstring]
  64             #    break
  65                 # check result for whether we found it
  66
  67             # for now just print it out
  68             for line in lines:
  69                 print line
  70                 utils.header(line)
  71             # should be parsing for special strings that indicate whether
  72             # we've reached a particular state within the boot sequence
  73
  74         return output
  75
  76     def call(self, hostname, image_type = 'node-iso', disk_size="4G", wait = 30):
  77
  78         # Get this nodes configuration
  79         node = self.config.get_node(hostname)
  80         # Which plc does this node talk to
  81         plc = self.config.get_plc(node['plc'])
  82         api = plc.config.api
  83         auth = plc.config.auth
  84         host = node['host']
  85         bootimage_filename = '%(hostname)s-bootcd.iso' % locals()
  86         tmpdir = '/usr/tmp/'
  87         homedir = node['homedir']
  88         diskimage_path = "/%(homedir)s/%(hostname)s-hda.img" % locals()
  89         bootimage_tmppath = "%(tmpdir)s/%(bootimage_filename)s" % locals()
  90         bootimage_path = "%(homedir)s/%(bootimage_filename)s" % locals()
  91         if host in ['localhost', None]:
  92             remote_bootimage_path = bootimage_path
  93         else:
  94             remote_bootimage_path = "%(host)s:%(bootimage_path)s" % locals()
  95
  96         # wait up to 30 minutes for a node to boot and install itself correctly
  97         self.hostname = hostname
  98         self.totaltime = 60*60*wait
  99
 100         # validate hostname
 101         nodes = api.GetNodes(auth, [hostname], ['hostname'])
 102         if not nodes:
 103             raise Exception, "%s not found at plc  %s" % (hostname, plc['name'])
 104         node.update(nodes[0])
 105
 106         # Create boot image
 107         if self.config.verbose:
 108             utils.header("Creating bootcd for %(hostname)s at %(host)s:%(bootimage_path)s" % locals())
 109         bootimage = api.GetBootMedium(auth, hostname, image_type, '', ['serial'])
 110         fp = open(bootimage_tmppath, 'w')
 111         fp.write(base64.b64decode(bootimage))
 112         fp.close()
 113
 114         # Move the boot image to the nodes home directory
 115         node.host_commands("mkdir -p %(homedir)s" % locals())
 116         node.scp(bootimage_tmppath, "%(remote_bootimage_path)s" % locals())
 117
 118         # Create a temporary disk image
 119         qemu_img_cmd = "qemu-img create -f qcow2 %(diskimage_path)s %(disk_size)s" % locals()
 120         node.host_commands(qemu_img_cmd)
 121
 122         if self.config.verbose:
 123             utils.header("Booting %(hostname)s" % locals())
 124
 125         # Attempt to boot this node image
 126
 127         # generate a temp filename to which qemu should store its pid (crappy approach)
 128         tmp = tempfile.mkstemp(".pid","qemu_")
 129         pidfile=tmp[1]
 130         os.unlink(pidfile)
 131         os.close(tmp[0])
 132
 133         # boot node with ramsize memory
 134         ramsize=400
 135
 136         # always use the 64 bit version of qemu, as this will work on both 32 & 64 bit host kernels
 137         bootcmd = "qemu-system-x86_64"
 138         # tell qemu to store its pid ina  file
 139         bootcmd = bootcmd + " -pidfile %(pidfile)s " % locals()
 140         # boot with ramsize memory
 141         bootcmd = bootcmd + " -m %(ramsize)s" % locals()
 142         # uniprocessor only
 143         bootcmd = bootcmd + " -smp 1"
 144         # redirect incomming tcp connections on specified port to guest node
 145         if 'redir_port' in node and node['redir_port']:
 146             port = node['redir_port']
 147             bootcmd = bootcmd + " -redir tcp:%(port)s::22" % locals()
 148         # no graphics support -> assume we are booting via serial console
 149         bootcmd = bootcmd + " -nographic"
 150         # boot from the supplied cdrom iso file
 151         bootcmd = bootcmd + " -boot d"
 152         bootcmd = bootcmd + " -cdrom %(bootimage_path)s" % locals()
 153         # hard disk image to use for the node
 154         bootcmd = bootcmd + " %(diskimage_path)s" % locals()
 155
 156         # launch qemu
 157         utils.header(bootcmd)
 158         (self.stdin, self.stdout, self.stderr) = node.host_popen3(bootcmd)
 159
 160         # wait for qemu to start up
 161         time.sleep(3)
 162
 163         # get qemu's pid from its pidfile (crappy approach)
 164         fp = file(pidfile)
 165         buf=fp.read()
 166         self.pid=int(buf)
 167         fp.close()
 168         os.unlink(pidfile)
 169
 170         # loop until the node is either fully booted, some error
 171         # occured, or we've reached our totaltime out
 172         def catch(sig, frame):
 173             self.totaltime = self.totaltime -1
 174             utils.header("beep %d\n" %self.totaltime)
 175             total = self.totaltime
 176             if (total == 0) or \
 177                    (((total % 60)==0) and self.state_nanny()):
 178                 killqemu(self.pid)
 179                 self.exit = True
 180             else:
 181                 signal.alarm(1)
 182
 183         try:
 184             signal.signal(signal.SIGALRM, catch)
 185             signal.alarm(1)
 186             self.exit = False
 187
 188             console_states = {"login:":1}
 189             while not self.exit:
 190                 try:
 191                     self.console_nanny(console_states)
 192                 except: # need a better way to catch exceptions
 193                     traceback.print_exc()
 194                     pass
 195
 196             signal.alarm(0)
 197         except:
 198             signal.alarm(0)
 199
 200         killqemu(self.pid)
 201         return 1
 202
 203 if __name__ == '__main__':
 204     args = tuple(sys.argv[1:])
 205     boot_node()(*args)