1 # Copyright (c) 2017 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import common 6 import logging 7 8 from autotest_lib.server import frontend 9 from autotest_lib.server import site_utils 10 11 RF_SWITCH_LABEL = 'rf_switch' 12 LOCK_REASON = 'Locked for the tests.' 13 14 15 def allocate_rf_switch(): 16 """Allocates a RF Switch. 17 18 Locks the available RF Switch if it was discovered via AFE to prevent tests 19 stomping on each other. 20 21 @return an instance of AFE host object or None. 22 """ 23 afe = frontend.AFE( 24 debug=True, server=site_utils.get_global_afe_hostname()) 25 # Get a list of hosts with label rf_switch that are not locked. 26 rf_switch_hosts = afe.get_hosts(label=RF_SWITCH_LABEL, locked=False) 27 if len(rf_switch_hosts) > 0: 28 for rf_switch in rf_switch_hosts: 29 # Lock the first available RF Switch in the list. 30 if afe.lock_host(rf_switch.hostname, LOCK_REASON): 31 return rf_switch 32 logging.error( 33 'RF Switch %s could not be locked' % rf_switch.hostname) 34 else: 35 logging.debug('No RF Switches are available for tests.') 36 37 38 def deallocate_rf_switch(rf_switch_host): 39 """Unlocks a RF Switch. 40 41 @param rf_switch_host: an instance of AFE Host object to unlock. 42 43 @return True if rf_switch is unlocked, False otherwise. 44 """ 45 afe = frontend.AFE( 46 debug=True, server=site_utils.get_global_afe_hostname()) 47 afe.unlock_hosts([rf_switch_host.hostname]) 48 rf_switch = afe.get_hosts(hostnames=(rf_switch_host.hostname,)) 49 return not rf_switch[0].locked 50
