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)
