def plcReadConfigVar(catID, varID, configFile=DEF_PLC_CONFIG_FILE):
"""
Returns the value of the specified variable.
"""
plcc = PLCConfiguration(configFile)
ret = plcc.get(catID, varID)
if ret == None:
return None
for d in ret:
if d['id'] == varID:
ret = d['value']
break
pass
return ret
def plcReadConfigVar(catID,varID,configFile=DEF_PLC_CONFIG_FILE):
"""
Returns the value of the specified variable.
"""
plcc = PLCConfiguration(configFile)
ret = plcc.get(catID,varID)
if ret == None:
return None
for d in ret:
if d['id'] == varID:
ret = d['value']
break
pass
return ret
def __init__(self, file = "/etc/planetlab/plc_config.xml"):
try:
from plc_config import PLCConfiguration
except:
sys.path.append(myplc)
from plc_config import PLCConfiguration
# Load plc_config.xml
try:
cfg = PLCConfiguration(file)
except:
# Try myplc directory
try:
cfg = PLCConfiguration(myplc + os.sep + "plc_config.xml")
except:
raise PLCAPIError("Could not find plc_config.xml in " + \
file + ", " + \
myplc + os.sep + "plc_config.xml")
for (category, variablelist) in cfg.variables().values():
for variable in variablelist.values():
# Try to cast each variable to an appropriate Python
# type.
if variable['type'] == "int":
value = int(variable['value'])
elif variable['type'] == "double":
value = float(variable['value'])
elif variable['type'] == "boolean":
if variable['value'] == "true":
value = True
else:
value = False
else:
value = variable['value']
# Variables are split into categories such as
# "plc_api", "plc_db", etc. Within each category are
# variables such as "host", "port", etc. For backward
# compatibility, refer to variables by their shell
# names.
shell_name = category['id'].upper() + "_" + variable['id'].upper()
setattr(self, shell_name, value)
def plcUpdateConfig(variables,configFile=DEF_PLC_CONFIG_FILE):
"""
Update the default planetlab config file.
Arguments:
variables = list of dicts or lists
configFile = alternate planetlab config file
Example: to set plc_www/host (i.e., PLC_WWW_HOST in myplc docs), do
variables[0] = { 'category' : 'plc_www',
'variable' : 'host',
'value' : <value> }
or
variables[0] = [ 'plc_www','host',<value> ]
"""
plcc = PLCConfiguration(configFile)
for obj in variables:
catDict = dict()
varDict = dict()
if type(obj) == list:
catDict['id'] = obj[0]
varDict['id'] = obj[1]
varDict['value'] = obj[2]
pass
elif type(obj) == dict:
catDict['id'] = obj['category']
varDict['id'] = obj['variable']
varDict['value'] = obj['value']
pass
else:
raise "Unsupported variable object!"
plcc.set(catDict,varDict)
pass
plcc.save()
pass
def plcUpdateConfig(variables, configFile=DEF_PLC_CONFIG_FILE):
"""
Update the default planetlab config file.
Arguments:
variables = list of dicts or lists
configFile = alternate planetlab config file
Example: to set plc_www/host (i.e., PLC_WWW_HOST in myplc docs), do
variables[0] = { 'category' : 'plc_www',
'variable' : 'host',
'value' : <value> }
or
variables[0] = [ 'plc_www','host',<value> ]
"""
plcc = PLCConfiguration(configFile)
for obj in variables:
catDict = dict()
varDict = dict()
if type(obj) == list:
catDict['id'] = obj[0]
varDict['id'] = obj[1]
varDict['value'] = obj[2]
pass
elif type(obj) == dict:
catDict['id'] = obj['category']
varDict['id'] = obj['variable']
varDict['value'] = obj['value']
pass
else:
raise "Unsupported variable object!"
plcc.set(catDict, varDict)
pass
plcc.save()
pass
