153 lines
4.9 KiB
Python
153 lines
4.9 KiB
Python
import image_chromeos
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import lock_machine
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import sys
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import threading
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import time
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from cros_utils import command_executer
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from cros_utils import logger
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class CrosMachine(object):
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def __init__(self, name):
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self.name = name
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self.image = None
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self.checksum = None
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self.locked = False
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self.released_time = time.time()
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self.autotest_run = None
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def __str__(self):
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l = []
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l.append(self.name)
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l.append(str(self.image))
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l.append(str(self.checksum))
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l.append(str(self.locked))
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l.append(str(self.released_time))
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return ', '.join(l)
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class MachineManagerSingleton(object):
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_instance = None
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_lock = threading.RLock()
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_all_machines = []
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_machines = []
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image_lock = threading.Lock()
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num_reimages = 0
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chromeos_root = None
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no_lock = False
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def __new__(cls, *args, **kwargs):
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with cls._lock:
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if not cls._instance:
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cls._instance = super(MachineManagerSingleton, cls).__new__(cls, *args,
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**kwargs)
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return cls._instance
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def TryToLockMachine(self, cros_machine):
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with self._lock:
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assert cros_machine, "Machine can't be None"
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for m in self._machines:
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assert m.name != cros_machine.name, ('Tried to double-lock %s' %
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cros_machine.name)
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if self.no_lock:
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locked = True
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else:
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locked = lock_machine.Machine(cros_machine.name).Lock(True, sys.argv[0])
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if locked:
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ce = command_executer.GetCommandExecuter()
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command = 'cat %s' % image_chromeos.checksum_file
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ret, out, err = ce.CrosRunCommandWOutput(
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command,
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chromeos_root=self.chromeos_root,
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machine=cros_machine.name)
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if ret == 0:
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cros_machine.checksum = out.strip()
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self._machines.append(cros_machine)
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else:
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logger.GetLogger().LogOutput("Warning: Couldn't lock: %s" %
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cros_machine.name)
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# This is called from single threaded mode.
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def AddMachine(self, machine_name):
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with self._lock:
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for m in self._all_machines:
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assert m.name != machine_name, 'Tried to double-add %s' % machine_name
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self._all_machines.append(CrosMachine(machine_name))
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def AcquireMachine(self, image_checksum):
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with self._lock:
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# Lazily external lock machines
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if not self._machines:
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for m in self._all_machines:
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self.TryToLockMachine(m)
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assert self._machines, ('Could not lock any machine in %s' %
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self._all_machines)
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### for m in self._machines:
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### if (m.locked and time.time() - m.released_time < 10 and
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### m.checksum == image_checksum):
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### return None
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for m in [machine for machine in self._machines if not machine.locked]:
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if m.checksum == image_checksum:
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m.locked = True
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m.autotest_run = threading.current_thread()
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return m
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for m in [machine for machine in self._machines if not machine.locked]:
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if not m.checksum:
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m.locked = True
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m.autotest_run = threading.current_thread()
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return m
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for m in [machine for machine in self._machines if not machine.locked]:
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if time.time() - m.released_time > 20:
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m.locked = True
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m.autotest_run = threading.current_thread()
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return m
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return None
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def ReleaseMachine(self, machine):
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with self._lock:
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for m in self._machines:
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if machine.name == m.name:
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assert m.locked == True, 'Tried to double-release %s' % m.name
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m.released_time = time.time()
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m.locked = False
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m.status = 'Available'
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break
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def __del__(self):
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with self._lock:
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# Unlock all machines.
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for m in self._machines:
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if not self.no_lock:
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assert lock_machine.Machine(m.name).Unlock(True) == True, (
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"Couldn't unlock machine: %s" % m.name)
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def __str__(self):
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with self._lock:
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l = ['MachineManager Status:']
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for m in self._machines:
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l.append(str(m))
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return '\n'.join(l)
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def AsString(self):
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with self._lock:
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stringify_fmt = '%-30s %-10s %-4s %-25s %-32s'
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header = stringify_fmt % ('Machine', 'Thread', 'Lock', 'Status',
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'Checksum')
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table = [header]
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for m in self._machines:
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if m.autotest_run:
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autotest_name = m.autotest_run.name
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autotest_status = m.autotest_run.status
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else:
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autotest_name = ''
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autotest_status = ''
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try:
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machine_string = stringify_fmt % (m.name, autotest_name, m.locked,
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autotest_status, m.checksum)
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except:
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machine_string = ''
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table.append(machine_string)
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return 'Machine Status:\n%s' % '\n'.join(table)
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