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's URL"),
24 ('slicemgr', 'SFI_SM' , d_slicemgr, '-m','--slicemgr', "slice manager's URL"),
25 ('aggmgr', 'SFI_AM', d_aggmgr, '-a','--aggregate', "aggregate manager's URL"),
26 ('verbose', 'SFACE_VERBOSE',False, '-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/sfi_config")
76 def read_config(self):
79 execfile(self.filename(), tmp)
81 print "Warning - no config file found %s"%self.filename()
83 for (field,sfi,default,_,__,___) in Config.supported:
84 if tmp.has_key(sfi):setattr(self,field,tmp[sfi])
85 else: setattr(self,field,default)
86 self.display("After reading config from %s"%self.filename())
88 def display (self, msg):
91 for k in self.fields():
92 print "%-20s: %r"%(k, self.get(k))
94 def save_config(self):
95 configfile = self.filename()
96 tmpfile = configfile + ".tmp"
98 out = open(tmpfile, "w")
101 fields = self.fields()
102 for line in open(configfile):
105 sfi, val = line.split('=')
108 field = self.sfi_field(sfi)
110 written_fields.append(field)
111 newval = self.get(field)
112 if not self.is_bool_field(field):
114 line = "%s = %s\n" % (sfi, newval)
118 print 'line',lineno,'ignored',line
121 # append other field in the end
122 new_fields = [f for f in fields if f not in written_fields]
123 for field in new_fields:
124 sfi = self.sfi_name(field)
125 val = self.get(field)
126 if not self.is_bool_field(field):
128 out.write("%s = %s\n" % (sfi, val))
131 os.unlink(configfile)
132 os.rename(tmpfile, configfile)
134 # check if a field is a boolean field
135 def is_bool_field(self, field):
136 for (f,_,default,__,___,____) in Config.supported:
137 if field==f: return isinstance(default,bool)
140 # to accept strings as bools
141 def is_true(self,value):
142 if value==True: return True
143 if isinstance(value,types.StringTypes) and value.lower()=='true': return True
145 def add_options_to_OptionParser (self, parser):
146 for (field,_,default,short,long,msg) in Config.supported:
147 if isinstance(default,bool):
148 parser.add_option(short,long,dest=field,action="store_true",help=msg)
150 parser.add_option(short,long,dest=field,action="store",default=None, help=msg)
152 def update_from_OptionParser (self, optparse_options):
153 for field in self.fields():
154 if not hasattr(optparse_options,field) : continue
155 value=getattr(optparse_options,field)
156 if value is not None:
157 setattr(self,field,getattr(optparse_options,field))
159 # def setUser(self, user):
160 # Config.SFI_USER = user
162 # # Should probably get authority from user record instead...
163 # a = user.split('.')
164 # Config.SFI_AUTH = '.'.join(a[:len(a)-1])
166 def getSliceRSpecFile(self):
167 return os.path.expanduser("~/.sfi/%s.rspec" % self.getSlice())
170 # configuration singleton
172 config.define_accessors()