/usr/share/pyshared/crm/template.py is in pacemaker 1.1.7-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 | # Copyright (C) 2008 Dejan Muhamedagic <dmuhamedagic@suse.de>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This software is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#
import re
from vars import Vars
from utils import *
from msg import *
def get_var(l,key):
for s in l:
a = s.split()
if len(a) == 2 and a[0] == key:
return a[1]
return ''
def chk_var(l,key):
for s in l:
a = s.split()
if len(a) == 2 and a[0] == key and a[1]:
return True
return False
def chk_key(l,key):
for s in l:
a = s.split()
if len(a) >= 1 and a[0] == key:
return True
return False
def validate_template(l):
'Test for required stuff in a template.'
if not chk_var(l,'%name'):
common_err("invalid template: missing '%name'")
return False
if not chk_key(l,'%generate'):
common_err("invalid template: missing '%generate'")
return False
g = l.index('%generate')
if not (chk_key(l[0:g],'%required') or chk_key(l[0:g],'%optional')):
common_err("invalid template: missing '%required' or '%optional'")
return False
return True
def fix_tmpl_refs(l,id,pfx):
for i in range(len(l)):
l[i] = l[i].replace(id,pfx)
def fix_tmpl_refs_re(l,regex,repl):
for i in range(len(l)):
l[i] = re.sub(regex,repl,l[i])
class LoadTemplate(object):
'''
Load a template and its dependencies, generate a
configuration file which should be relatively easy and
straightforward to parse.
'''
edit_instructions = '''# Edit instructions:
#
# Add content only at the end of lines starting with '%%'.
# Only add content, don't remove or replace anything.
# The parameters following '%required' are not optional,
# unlike those following '%optional'.
# You may also add comments for future reference.'''
no_more_edit = '''# Don't edit anything below this line.'''
def __init__(self,name):
self.name = name
self.all_pre_gen = []
self.all_post_gen = []
self.all_pfx = []
def new_pfx(self,name):
i = 1
pfx = name
while pfx in self.all_pfx:
pfx = "%s_%d" % (name,i)
i += 1
self.all_pfx.append(pfx)
return pfx
def generate(self):
return '\n'.join([ \
"# Configuration: %s" % self.name, \
'', \
self.edit_instructions, \
'', \
'\n'.join(self.all_pre_gen), \
self.no_more_edit, \
'', \
'%generate', \
'\n'.join(self.all_post_gen)])
def write_config(self,name):
try:
f = open("%s/%s" % (vars.tmpl_conf_dir, name),"w")
except IOError,msg:
common_err("open: %s"%msg)
return False
print >>f, self.generate()
f.close()
return True
def load_template(self,tmpl):
try:
f = open("%s/%s" % (vars.tmpl_dir, tmpl))
except IOError,msg:
common_err("open: %s"%msg)
return ''
l = (''.join(f)).split('\n')
if not validate_template(l):
return ''
common_info("pulling in template %s" % tmpl)
g = l.index('%generate')
pre_gen = l[0:g]
post_gen = l[g+1:]
name = get_var(pre_gen,'%name')
for s in l[0:g]:
if s.startswith('%depends_on'):
a = s.split()
if len(a) != 2:
common_warn("%s: wrong usage" % s)
continue
tmpl_id = a[1]
tmpl_pfx = self.load_template(a[1])
if tmpl_pfx:
fix_tmpl_refs(post_gen,'%'+tmpl_id,'%'+tmpl_pfx)
pfx = self.new_pfx(name)
fix_tmpl_refs(post_gen, '%_:', '%'+pfx+':')
# replace remaining %_, it may be useful at times
fix_tmpl_refs(post_gen, '%_', pfx)
v_idx = pre_gen.index('%required') or pre_gen.index('%optional')
pre_gen.insert(v_idx,'%pfx ' + pfx)
self.all_pre_gen += pre_gen
self.all_post_gen += post_gen
return pfx
def post_process(self, params):
pfx_re = '(%s)' % '|'.join(self.all_pfx)
for n in params:
fix_tmpl_refs(self.all_pre_gen, '%% '+n, "%% "+n+" "+params[n])
fix_tmpl_refs_re(self.all_post_gen, \
'%'+pfx_re+'([^:]|$)', r'\1\2')
# process %if ... [%else] ... %fi
rmidx_l = []
if_seq = False
for i in range(len(self.all_post_gen)):
s = self.all_post_gen[i]
if if_seq:
a = s.split()
if len(a) >= 1 and a[0] == '%fi':
if_seq = False
rmidx_l.append(i)
elif len(a) >= 1 and a[0] == '%else':
outcome = not outcome
rmidx_l.append(i)
else:
if not outcome:
rmidx_l.append(i)
continue
if not s:
continue
a = s.split()
if len(a) == 2 and a[0] == '%if':
outcome = not a[1].startswith('%') # not replaced -> false
if_seq = True
rmidx_l.append(i)
rmidx_l.reverse()
for i in rmidx_l:
del self.all_post_gen[i]
vars = Vars.getInstance()
# vim:ts=4:sw=4:et:
|