9 from optparse import OptionParser
14 d_registry= "http://www.planet-lab.org:12345"
15 d_slicemgr= "http://www.planet-lab.org:12347"
16 # d_aggmgr= "http://www.planet-lab.org:12346"
19 # local code name, config variable name, default
20 ('slice', 'SFI_SLICE' , None, '-s','--slice', "slice HRN"),
21 ('user', 'SFI_USER', None, '-u','--user', "user HRN"),
22 ('authority', 'SFI_AUTH', None, '-t','--auth', "users's authority HRN"),
23 ('registry', 'SFI_REGISTRY', d_registry, '-r','--registry', "registry API URL"),
24 ('slicemgr', 'SFI_SM' , d_slicemgr, '-m','--slicemgr', "slice API URL"),
25 # ('aggmgr', 'SFI_AM', d_aggmgr, '-a','--aggregate', "aggregate manager's URL"),
26 ('verbose', 'SFACE_VERBOSE',True, '-v','--verbose', "UI verbosity"),
27 ('debug', 'SFACE_DEBUG', False, '-d','--debug', "UI debug flag"),
31 return [ tup[0] for tup in Config.supported ]
33 def field_labels (self):
34 return [ (tup[0],tup[5]) for tup in Config.supported ]
36 def sfi_field (self, sfi):
37 for tuple in Config.supported:
38 if tuple[1]==sfi: return tuple[0]
41 def sfi_name(self, field):
42 for tuple in Config.supported:
43 if tuple[0] == field: return tuple[1]
46 def field_default (self, field):
47 for tuple in Config.supported:
48 if tuple[0]==field: return tuple[2]
51 # xxx todo - need for validators - not even sure this is still useful
52 def define_accessors (self):
53 for (field,sfi,default,_,__,___) in Config.supported:
54 self.define_accessor (field,sfi,default)
56 def define_accessor (self,field,sfi,default):
57 get_name="get" + field.capitalize();
58 if not hasattr(Config,get_name):
59 def get_call (self): return getattr(self,field)
60 setattr (Config, get_name, get_call)
61 set_name="set" + field.capitalize();
62 if not hasattr(Config,set_name):
63 def set_call (self, newvalue): setattr (self, field, newvalue)
64 setattr (Config, set_name, set_call)
66 # the generic form of accessors
67 def get(self,field): return getattr(self,field)
68 def set(self,field,value): setattr(self,field,value)
74 return os.path.expanduser("~/.sfi/")
77 return self.dirname() + "sfi_config"
79 def read_config(self):
82 execfile(self.filename(), tmp)
84 print "Warning - no config file found %s"%self.filename()
86 for (field,sfi,default,_,__,___) in Config.supported:
87 if tmp.has_key(sfi):setattr(self,field,tmp[sfi])
88 else: setattr(self,field,default)
89 self.display("After reading config from %s"%self.filename())
91 def display (self, msg):
94 for k in self.fields():
95 print "%-20s: %r"%(k, self.get(k))
97 def save_config(self):
98 configdir = self.dirname()
99 if not os.path.exists(configdir):
100 os.makedirs(configdir)
102 configfile = self.filename()
103 if not os.path.exists(configfile):
104 open(configfile, "w").close()
106 tmpfile = configfile + ".tmp"
108 out = open(tmpfile, "w")
111 fields = self.fields()
112 for line in open(configfile, "r"):
115 sfi, val = line.split('=')
118 field = self.sfi_field(sfi)
120 written_fields.append(field)
121 newval = self.get(field)
122 if not self.is_bool_field(field):
124 line = "%s = %s\n" % (sfi, newval)
128 print 'line',lineno,'ignored',line
131 # append other field in the end
132 new_fields = [f for f in fields if f not in written_fields]
133 for field in new_fields:
134 sfi = self.sfi_name(field)
135 val = self.get(field)
136 if not self.is_bool_field(field):
138 out.write("%s = %s\n" % (sfi, val))
141 os.unlink(configfile)
142 os.rename(tmpfile, configfile)
144 # check if a field is a boolean field
145 def is_bool_field(self, field):
146 for (f,_,default,__,___,____) in Config.supported:
147 if field==f: return isinstance(default,bool)
150 # to accept strings as bools
151 def is_true(self,value):
152 if value==True: return True
153 if isinstance(value,types.StringTypes) and value.lower()=='true': return True
155 def add_options_to_OptionParser (self, parser):
156 for (field,_,default,short,long,msg) in Config.supported:
157 if isinstance(default,bool):
158 parser.add_option(short,long,dest=field,action="store_true",help=msg)
160 parser.add_option(short,long,dest=field,action="store",default=None, help=msg)
162 def update_from_OptionParser (self, optparse_options):
163 for field in self.fields():
164 if not hasattr(optparse_options,field) : continue
165 value=getattr(optparse_options,field)
166 if value is not None:
167 setattr(self,field,getattr(optparse_options,field))
169 # def setUser(self, user):
170 # Config.SFI_USER = user
172 # # Should probably get authority from user record instead...
173 # a = user.split('.')
174 # Config.SFI_AUTH = '.'.join(a[:len(a)-1])
176 def getSliceRSpecFile(self):
177 return os.path.expanduser("~/.sfi/%s.rspec" % self.getSlice())
180 # configuration singleton
182 config.define_accessors()