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

123 lines
4.3 KiB
Python

import textwrap
from django.utils.translation import ugettext_lazy as _
from orchestra.apps.orchestration import ServiceController
from . import settings
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(subdomain)
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_servers(self, domain, backend):
from orchestra.apps.orchestration.models import Route, BackendOperation as Operation
operation = Operation(backend=backend, action='save', instance=domain)
servers = []
for server in Route.get_servers(operation):
servers.append(server.get_ip())
return servers
def get_context(self, domain):
context = {
'name': domain.name,
'zone_path': settings.DOMAINS_ZONE_PATH % {'name': domain.name},
'subdomains': domain.subdomains.all(),
'banner': self.get_banner(),
'slaves': '; '.join(self.get_servers(domain, Bind9SlaveDomainBackend)),
}
context.update({
'conf_path': settings.DOMAINS_MASTERS_PATH,
'conf': textwrap.dedent("""
zone "%(name)s" {
// %(banner)s
type master;
file "%(zone_path)s";
allow-transfer { %(slaves)s; };
};""" % 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,
'banner': self.get_banner(),
'subdomains': domain.subdomains.all(),
'masters': '; '.join(self.get_servers(domain, Bind9MasterDomainBackend)),
}
context.update({
'conf_path': settings.DOMAINS_SLAVES_PATH,
'conf': textwrap.dedent("""
zone "%(name)s" {
// %(banner)s
type slave;
file "%(name)s";
masters { %(masters)s; };
allow-notify { %(masters)s; };
};""" % context)
})
return context