-#!/bin/env python
+#!/usr/bin/env python
+import os
import sys
+import re
+import time
+import traceback
+import types
import readline
-import plc_config
+from StringIO import StringIO
+from optparse import OptionParser
+
+from sfa.util.version import version_tag
+from sfa.util.config import Config
+
def validator(validated_variables):
pass
# maint_user = validated_variables["PLC_API_MAINTENANCE_USER"]
# root_user = validated_variables["PLC_ROOT_USER"]
# if maint_user == root_user:
-# errStr="PLC_API_MAINTENANCE_USER=%s cannot be the same as PLC_ROOT_USER=%s"%(maint_user,root_user)
+# errStr="PLC_API_MAINTENANCE_USER=%s cannot be the same as PLC_ROOT_USER=%s"%(maint_user, root_user)
# raise plc_config.ConfigurationException(errStr)
usual_variables = [
+ "SFA_GENERIC_FLAVOUR",
"SFA_INTERFACE_HRN",
"SFA_REGISTRY_ROOT_AUTH",
- "SFA_REGISTRY_HOST",
+ "SFA_REGISTRY_HOST",
"SFA_AGGREGATE_HOST",
"SFA_SM_HOST",
- "SFA_PLC_URL",
- "SFA_PLC_USER",
- "SFA_PLC_PASSWORD",
"SFA_DB_HOST",
- ]
+]
+
+flavour_xml_section_hash = {
+ 'pl': 'sfa_plc',
+ 'openstack': 'sfa_nova',
+ 'fd': 'sfa_federica',
+ 'nitos': 'sfa_nitos',
+ 'dummy': 'sfa_dummy',
+}
+configuration = {
+ 'name': 'sfa',
+ 'service': "sfa",
+ 'usual_variables': usual_variables,
+ 'config_dir': "/etc/sfa",
+ 'validate_variables': {},
+ 'validator': validator,
+}
+
+
+# GLOBAL VARIABLES
+#
+g_configuration = None
+usual_variables = None
+config_dir = None
+service = None
+
+
+def noop_validator(validated_variables):
+ pass
+
+# historically we could also configure the devel pkg....
+
+
+def init_configuration():
+ global g_configuration
+ global usual_variables, config_dir, service
+
+ usual_variables = g_configuration["usual_variables"]
+ config_dir = g_configuration["config_dir"]
+ service = g_configuration["service"]
+
+ global def_default_config, def_site_config, def_consolidated_config
+ def_default_config = "%s/default_config.xml" % config_dir
+ def_site_config = "%s/configs/site_config" % config_dir
+ def_consolidated_config = "%s/%s_config" % (config_dir, service)
+
+ global mainloop_usage
+ mainloop_usage = """Available commands:
+ Uppercase versions give variables comments, when available
+ u/U\t\t\tEdit usual variables
+ w\t\t\tWrite
+ r\t\t\tRestart %(service)s service
+ R\t\t\tReload %(service)s service (rebuild config files for sh, python....)
+ q\t\t\tQuit (without saving)
+ h/?\t\t\tThis help
+---
+ l/L [<cat>|<var>]\tShow Locally modified variables/values
+ s/S [<cat>|<var>]\tShow variables/values (all, in category, single)
+ e/E [<cat>|<var>]\tEdit variables (all, in category, single)
+---
+ c\t\t\tList categories
+ v/V [<cat>|<var>]\tList Variables (all, in category, single)
+---
+Typical usage involves: u, [l,] w, r, q
+""" % globals()
+
+
+def usage():
+ command_usage = "%prog [options] [default-xml [site-xml [consolidated-xml]]]"
+ init_configuration()
+ command_usage += """
+\t default-xml defaults to %s
+\t site-xml defaults to %s
+\t consolidated-xml defaults to %s""" % (def_default_config, def_site_config, def_consolidated_config)
+ return command_usage
+
+####################
+variable_usage = """Edit Commands :
+#\tShow variable comments
+.\tStops prompting, return to mainloop
+/\tCleans any site-defined value, reverts to default
+=\tShows default value
+>\tSkips to next category
+?\tThis help
+"""
+
+####################
+
+
+def get_value(config, category_id, variable_id):
+ value = config.get(category_id, variable_id)
+ return value
+
+
+def get_type(config, category_id, variable_id):
+ value = config.get(category_id, variable_id)
+ # return variable['type']
+ return str
+
+
+def get_current_value(cread, cwrite, category_id, variable_id):
+ # the value stored in cwrite, if present, is the one we want
+ try:
+ result = get_value(cwrite, category_id, variable_id)
+ except:
+ result = get_value(cread, category_id, variable_id)
+ return result
+
+# refrain from using plc_config's _sanitize
+
+
+def get_varname(config, category_id, variable_id):
+ varname = category_id + "_" + variable_id
+ config.locate_varname(varname)
+ return varname
+
+# could not avoid using _sanitize here..
+
+
+def get_name_comments(config, cid, vid):
+ try:
+ (category, variable) = config.get(cid, vid)
+ (id, name, value, comments) = config._sanitize_variable(cid, variable)
+ return (name, comments)
+ except:
+ return (None, [])
+
+
+def print_name_comments(config, cid, vid):
+ name, comments = get_name_comments(config, cid, vid)
+ if name:
+ print "### %s" % name
+ if comments:
+ for line in comments:
+ print "# %s" % line
+ else:
+ print "!!! No comment associated to %s_%s" % (cid, vid)
+
+####################
+
+
+def list_categories(config):
+ result = []
+ for section in config.sections():
+ result += [section]
+ return result
+
+
+def print_categories(config):
+ print "Known categories"
+ for cid in list_categories(config):
+ print "%s" % (cid.upper())
+
+####################
+
+
+def list_category(config, cid):
+ result = []
+ for section in config.sections():
+ if section == cid.lower():
+ for (name, value) in config.items(section):
+ result += ["%s_%s" % (cid, name)]
+ return result
+
+
+def print_category(config, cid, show_comments=True):
+ cid = cid.lower()
+ CID = cid.upper()
+ vids = list_category(config, cid)
+ if (len(vids) == 0):
+ print "%s : no such category" % CID
+ else:
+ print "Category %s contains" % (CID)
+ for vid in vids:
+ print vid.upper()
+
+####################
+
+
+def consolidate(default_config, site_config, consolidated_config):
+ global service
+ try:
+ conso = Config(default_config)
+ conso.load(site_config)
+ conso.save(consolidated_config)
+ except Exception, inst:
+ print "Could not consolidate, %s" % (str(inst))
+ return
+ print("Merged\n\t%s\nand\t%s\ninto\t%s" % (default_config, site_config,
+ consolidated_config))
+
+
+def reload_service():
+ global service
+ os.system("set -x ; service %s reload" % service)
+
+####################
+
+
+def restart_service():
+ global service
+ print("==================== Stopping %s" % service)
+ os.system("service %s stop" % service)
+ print("==================== Starting %s" % service)
+ os.system("service %s start" % service)
+
+####################
+
+
+def prompt_variable(cdef, cread, cwrite, category, variable,
+ show_comments, support_next=False):
+
+ category_id = category
+ variable_id = variable
+
+ while True:
+ default_value = get_value(cdef, category_id, variable_id)
+ variable_type = get_type(cdef, category_id, variable_id)
+ current_value = get_current_value(
+ cread, cwrite, category_id, variable_id)
+ varname = get_varname(cread, category_id, variable_id)
+
+ if show_comments:
+ print_name_comments(cdef, category_id, variable_id)
+ prompt = "== %s : [%s] " % (varname, current_value)
+ try:
+ answer = raw_input(prompt).strip()
+ except EOFError:
+ raise Exception('BailOut')
+ except KeyboardInterrupt:
+ print "\n"
+ raise Exception('BailOut')
+
+ # no change
+ if (answer == "") or (answer == current_value):
+ return None
+ elif (answer == "."):
+ raise Exception('BailOut')
+ elif (answer == "#"):
+ print_name_comments(cread, category_id, variable_id)
+ elif (answer == "?"):
+ print variable_usage.strip()
+ elif (answer == "="):
+ print("%s defaults to %s" % (varname, default_value))
+ # revert to default : remove from cwrite (i.e. site-config)
+ elif (answer == "/"):
+ cwrite.delete(category_id, variable_id)
+ print("%s reverted to %s" % (varname, default_value))
+ return
+ elif (answer == ">"):
+ if support_next:
+ raise Exception('NextCategory')
+ else:
+ print "No support for next category"
+ else:
+ if cdef.validate_type(variable_type, answer):
+ cwrite.set(category_id, variable_id, answer)
+ return
+ else:
+ print "Not a valid value"
+
+
+def prompt_variables_all(cdef, cread, cwrite, show_comments):
+ try:
+ for (category_id, (category, variables)) in cread.variables().iteritems():
+ print("========== Category = %s" % category_id.upper())
+ for variable in variables.values():
+ try:
+ newvar = prompt_variable(cdef, cread, cwrite, category, variable,
+ show_comments, True)
+ except Exception, inst:
+ if (str(inst) == 'NextCategory'):
+ break
+ else:
+ raise
+
+ except Exception, inst:
+ if (str(inst) == 'BailOut'):
+ return
+ else:
+ raise
+
+
+def prompt_variables_category(cdef, cread, cwrite, cid, show_comments):
+ cid = cid.lower()
+ CID = cid.upper()
+ try:
+ print("========== Category = %s" % CID)
+ for vid in list_category(cdef, cid):
+ (category, variable) = cdef.locate_varname(vid.upper())
+ newvar = prompt_variable(cdef, cread, cwrite, category, variable,
+ show_comments, False)
+ except Exception, inst:
+ if (str(inst) == 'BailOut'):
+ return
+ else:
+ raise
+
+####################
+
+
+def show_variable(cdef, cread, cwrite,
+ category, variable, show_value, show_comments):
+ assert category.has_key('id')
+ assert variable.has_key('id')
+
+ category_id = category['id']
+ variable_id = variable['id']
+
+ default_value = get_value(cdef, category_id, variable_id)
+ current_value = get_current_value(cread, cwrite, category_id, variable_id)
+ varname = get_varname(cread, category_id, variable_id)
+ if show_comments:
+ print_name_comments(cdef, category_id, variable_id)
+ if show_value:
+ print "%s = %s" % (varname, current_value)
+ else:
+ print "%s" % (varname)
+
+
+def show_variables_all(cdef, cread, cwrite, show_value, show_comments):
+ for (category_id, (category, variables)) in cread.variables().iteritems():
+ print("========== Category = %s" % category_id.upper())
+ for variable in variables.values():
+ show_variable(cdef, cread, cwrite,
+ category, variable, show_value, show_comments)
+
+
+def show_variables_category(cdef, cread, cwrite, cid, show_value, show_comments):
+ cid = cid.lower()
+ CID = cid.upper()
+ print("========== Category = %s" % CID)
+ for vid in list_category(cdef, cid):
+ (category, variable) = cdef.locate_varname(vid.upper())
+ show_variable(cdef, cread, cwrite, category, variable,
+ show_value, show_comments)
+
+####################
+re_mainloop_0arg = "^(?P<command>[uUwrRqlLsSeEcvVhH\?])[ \t]*$"
+re_mainloop_1arg = "^(?P<command>[sSeEvV])[ \t]+(?P<arg>\w+)$"
+matcher_mainloop_0arg = re.compile(re_mainloop_0arg)
+matcher_mainloop_1arg = re.compile(re_mainloop_1arg)
+
+
+def mainloop(cdef, cread, cwrite, default_config, site_config, consolidated_config):
+ global service
+ while True:
+ try:
+ answer = raw_input(
+ "Enter command (u for usual changes, w to save, ? for help) ").strip()
+ except EOFError:
+ answer = ""
+ except KeyboardInterrupt:
+ print "\nBye"
+ sys.exit()
+
+ if (answer == "") or (answer in "?hH"):
+ print mainloop_usage
+ continue
+ groups_parse = matcher_mainloop_0arg.match(answer)
+ command = None
+ if (groups_parse):
+ command = groups_parse.group('command')
+ arg = None
+ else:
+ groups_parse = matcher_mainloop_1arg.match(answer)
+ if (groups_parse):
+ command = groups_parse.group('command')
+ arg = groups_parse.group('arg')
+ if not command:
+ print("Unknown command >%s< -- use h for help" % answer)
+ continue
+
+ show_comments = command.isupper()
+
+ mode = 'ALL'
+ if arg:
+ mode = None
+ arg = arg.lower()
+ variables = list_category(cdef, arg)
+ if len(variables):
+ # category_id as the category name
+ # variables as the list of variable names
+ mode = 'CATEGORY'
+ category_id = arg
+ arg = arg.upper()
+ (category, variable) = cdef.locate_varname(arg)
+ if variable:
+ # category/variable as output by locate_varname
+ mode = 'VARIABLE'
+ if not mode:
+ print "%s: no such category or variable" % arg
+ continue
+
+ if command in "qQ":
+ # todo check confirmation
+ return
+ elif command == "w":
+ try:
+ # Confirm that various constraints are met before saving file.
+ validate_variables = g_configuration.get(
+ 'validate_variables', {})
+ validated_variables = cwrite.verify(
+ cdef, cread, validate_variables)
+ validator = g_configuration.get('validator', noop_validator)
+ validator(validated_variables)
+ cwrite.save(site_config)
+ except:
+ print "Save failed due to a configuration exception:"
+ print traceback.print_exc()
+ print("Could not save -- fix write access on %s" % site_config)
+ break
+ print("Wrote %s" % site_config)
+ consolidate(default_config, site_config, consolidated_config)
+ print("You might want to type 'r' (restart %s), 'R' (reload %s) or 'q' (quit)" %
+ (service, service))
+ elif command in "uU":
+ global usual_variables
+ global flavour_xml_section_hash
+ try:
+ for varname in usual_variables:
+ (category, variable) = cdef.locate_varname(varname)
+ if not (category is None and variable is None):
+ prompt_variable(cdef, cread, cwrite,
+ category, variable, False)
+
+ # set the driver variable according to the already set flavour
+ generic_flavour = cwrite.items('sfa')[0][1]
+ for section in cdef.sections():
+ if generic_flavour in flavour_xml_section_hash and flavour_xml_section_hash[generic_flavour] == section:
+ for item in cdef.items(section):
+ category = section
+ variable = item[0]
+ prompt_variable(cdef, cread, cwrite,
+ category, variable, False)
+ break
+
+ except Exception, inst:
+ if (str(inst) != 'BailOut'):
+ raise
+ elif command == "r":
+ restart_service()
+ elif command == "R":
+ reload_service()
+ elif command == "c":
+ print_categories(cread)
+ elif command in "eE":
+ if mode == 'ALL':
+ prompt_variables_all(cdef, cread, cwrite, show_comments)
+ elif mode == 'CATEGORY':
+ prompt_variables_category(
+ cdef, cread, cwrite, category_id, show_comments)
+ elif mode == 'VARIABLE':
+ try:
+ prompt_variable(cdef, cread, cwrite, category, variable,
+ show_comments, False)
+ except Exception, inst:
+ if str(inst) != 'BailOut':
+ raise
+ elif command in "vVsSlL":
+ show_value = (command in "sSlL")
+ (c1, c2, c3) = (cdef, cread, cwrite)
+ if command in "lL":
+ (c1, c2, c3) = (cwrite, cwrite, cwrite)
+ if mode == 'ALL':
+ show_variables_all(c1, c2, c3, show_value, show_comments)
+ elif mode == 'CATEGORY':
+ show_variables_category(
+ c1, c2, c3, category_id, show_value, show_comments)
+ elif mode == 'VARIABLE':
+ show_variable(c1, c2, c3, category, variable,
+ show_value, show_comments)
+ else:
+ print("Unknown command >%s< -- use h for help" % answer)
+
+
+####################
+# creates directory for file if not yet existing
+def check_dir(config_file):
+ dirname = os.path.dirname(config_file)
+ if (not os.path.exists(dirname)):
+ try:
+ os.makedirs(dirname, 0755)
+ except OSError, e:
+ print "Cannot create dir %s due to %s - exiting" % (dirname, e)
+ sys.exit(1)
+
+ if (not os.path.exists(dirname)):
+ print "Cannot create dir %s - exiting" % dirname
+ sys.exit(1)
+ else:
+ print "Created directory %s" % dirname
+
+####################
+
+
+def optParserSetup(configuration):
+ parser = OptionParser(usage=usage(), version="%prog " + version_tag)
+ parser.set_defaults(config_dir=configuration['config_dir'],
+ service=configuration['service'],
+ usual_variables=configuration['usual_variables'])
+ parser.add_option("", "--configdir", dest="config_dir",
+ help="specify configuration directory")
+ parser.add_option("", "--service", dest="service",
+ help="specify /etc/init.d style service name")
+ parser.add_option("", "--usual_variable", dest="usual_variables",
+ action="append", help="add a usual variable")
+ return parser
+
+
+def main(command, argv, configuration):
+ global g_configuration
+ g_configuration = configuration
+
+ parser = optParserSetup(configuration)
+ (config, args) = parser.parse_args()
+ if len(args) > 3:
+ parser.error("too many arguments")
+
+ configuration['service'] = config.service
+ configuration['usual_variables'] = config.usual_variables
+ configuration['config_dir'] = config.config_dir
+ # add in new usual_variables defined on the command line
+ for usual_variable in config.usual_variables:
+ if usual_variable not in configuration['usual_variables']:
+ configuration['usual_variables'].append(usual_variable)
+
+ # intialize configuration
+ init_configuration()
+
+ default_config, site_config, consolidated_config = \
+ def_default_config, def_site_config, def_consolidated_config
+ if len(args) >= 1:
+ default_config = args[0]
+ if len(args) >= 2:
+ site_config = args[1]
+ if len(args) == 3:
+ consolidated_config = args[2]
+
+ for c in (default_config, site_config, consolidated_config):
+ check_dir(c)
+
+ try:
+ # the default settings only - read only
+ cdef = Config(default_config)
+
+ # in effect : default settings + local settings - read only
+ cread = Config(default_config)
+ except:
+ print traceback.print_exc()
+ print("default config files %s not found, is myplc installed ?" %
+ default_config)
+ return 1
+
+ # local settings only, will be modified & saved
+ config_filename = "%s/sfa_config" % config.config_dir
+ cwrite = Config(config_filename)
+ try:
+ cread.load(site_config)
+ cwrite.load(default_config)
+ cwrite.load(site_config)
+ except:
+ cwrite = Config()
-configuration={ \
- 'name':'sfa',
- 'service':"sfa",
- 'usual_variables':usual_variables,
- 'config_dir':"/etc/sfa",
- 'validate_variables':{},
- 'validator':validator,
- }
+ mainloop(cdef, cread, cwrite, default_config,
+ site_config, consolidated_config)
+ return 0
if __name__ == '__main__':
- command=sys.argv[0]
+ command = sys.argv[0]
argv = sys.argv[1:]
- plc_config.main(command,argv,configuration)
+ main(command, argv, configuration)
git://git.onelab.eu / sfa.git / blobdiff