django-orchestra/orchestra/apps/domains/backends.py

106 lines
3.7 KiB
Python

import os
from django.utils.translation import ugettext_lazy as _
from . import settings
from orchestra.apps.orchestration import ServiceController
class Bind9MasterDomainBackend(ServiceController):
verbose_name = _("Bind9 master domain")
model = 'domains.Domain'
related_models = (
('domains.Record', 'domain__origin'),
('domains.Domain', 'origin'),
)
@classmethod
def is_main(cls, obj):
""" work around Domain.top self relationship """
if super(Bind9MasterDomainBackend, cls).is_main(obj):
return not obj.top
def save(self, domain):
context = self.get_context(domain)
domain.refresh_serial()
context['zone'] = ';; %(banner)s\n' % context
context['zone'] += domain.render_zone()
self.append("{ echo -e '%(zone)s' | diff -N -I'^;;' %(zone_path)s - ; } ||"
" { echo -e '%(zone)s' > %(zone_path)s; UPDATED=1; }" % context)
self.update_conf(context)
def update_conf(self, context):
self.append("grep '\s*zone\s*\"%(name)s\"\s*{' %(conf_path)s > /dev/null ||"
" { echo -e '%(conf)s' >> %(conf_path)s; UPDATED=1; }" % context)
for subdomain in context['subdomains']:
context['name'] = subdomain.name
self.delete_conf(context)
def delete(self, domain):
context = self.get_context(domain)
self.append('rm -f %(zone_path)s;' % context)
self.delete_conf(context)
def delete_conf(self, context):
self.append('awk -v s=%(name)s \'BEGIN {'
' RS=""; s="zone \\""s"\\""'
'} $0!~s{ print $0"\\n" }\' %(conf_path)s > %(conf_path)s.tmp'
% context)
self.append('diff -I"^\s*//" %(conf_path)s.tmp %(conf_path)s || UPDATED=1' % context)
self.append('mv %(conf_path)s.tmp %(conf_path)s' % context)
def commit(self):
""" reload bind if needed """
self.append('[[ $UPDATED == 1 ]] && service bind9 reload')
def get_context(self, domain):
context = {
'name': domain.name,
'zone_path': settings.DOMAINS_ZONE_PATH % {'name': domain.name},
'subdomains': domain.get_subdomains(),
'banner': self.get_banner(),
}
context.update({
'conf_path': settings.DOMAINS_MASTERS_PATH,
'conf': 'zone "%(name)s" {\n'
' // %(banner)s\n'
' type master;\n'
' file "%(zone_path)s";\n'
'};\n' % context
})
return context
class Bind9SlaveDomainBackend(Bind9MasterDomainBackend):
verbose_name = _("Bind9 slave domain")
related_models = (('domains.Domain', 'origin'),)
def save(self, domain):
context = self.get_context(domain)
self.update_conf(context)
def delete(self, domain):
context = self.get_context(domain)
self.delete_conf(context)
def commit(self):
""" ideally slave should be restarted after master """
self.append('[[ $UPDATED == 1 ]] && { sleep 1 && service bind9 reload; } &')
def get_context(self, domain):
context = {
'name': domain.name,
'masters': '; '.join(settings.DOMAINS_MASTERS),
'subdomains': domain.get_subdomains()
}
context.update({
'conf_path': settings.DOMAINS_SLAVES_PATH,
'conf': 'zone "%(name)s" {\n'
' type slave;\n'
' file "%(name)s";\n'
' masters { %(masters)s; };\n'
'};\n' % context
})
return context