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import os
import json
import re
import sys
import subprocess
import time
import urllib.request as urllib2
import multiprocessing as mp
from charmhelpers.core import host
from charmhelpers.core.hookenv import (
open_port,
open_ports,
status_set,
config,
unit_public_ip,
unit_private_ip,
)
from charmhelpers.core.host import (
service_start,
service_stop,
log,
mkdir,
write_file,
)
from charmhelpers.fetch import (
apt_install,
apt_update,
apt_upgrade
)
from charms.reactive.helpers import (
mark_invoked,
was_invoked,
)
from charms.reactive import (
when,
when_not,
when_file_changed,
hook,
RelationBase,
scopes,
set_state,
remove_state
)
CONF_FILE = '/tmp';
#########################################################################
# Common functions
#########################################################################
def run_command(command=None):
if command is None:
return False;
log('Running Command "%s"' % command);
try:
return subprocess.check_output(command, shell=True, stderr=subprocess.STDOUT).decode('utf-8').replace('\n', '');
except subprocess.CalledProcessError as e:
log('Error running "%s" : %s' % (command, e.output));
return False;
def get_config(key):
conf = config(key);
return conf;
def retrieve(key):
try:
conf = open('/tmp/ovn_conf', 'r');
except:
return '';
plain_text = conf.read();
conf.close();
if plain_text == '':
return '';
else:
data = json.loads(plain_text);
return data[key];
def store(key, value):
conf = open('/tmp/ovn_conf', 'r');
plain_text = conf.read();
conf.close();
conf = open('/tmp/ovn_conf', 'w+');
data = {};
if plain_text != '':
data = json.loads(plain_text);
data[key] = value;
conf.truncate(0);
conf.seek(0, 0);
conf.write(json.dumps(data));
conf.close();
#########################################################################
# Relation Class
#########################################################################
class MasterConfigPeer(RelationBase):
scope = scopes.UNIT;
@hook("{peers:master-config}-relation-{joined}")
def joined(self):
conv = self.conversation();
conv.set_state("{relation_name}.connected");
@hook("{peers:master-config}-relation-{changed}")
def changed(self):
conv = self.conversation();
worker_id = conv.get_local(key='worker_id');
if worker_id != None and conv.get_remote(worker_id):
conv.set_state("{relation_name}.master.data.available");
elif conv.get_remote('cert_to_sign'):
conv.set_state("{relation_name}.worker.cert.available");
@hook("{peers:master-config}-relation-{departed}")
def departed(self):
conv = self.conversation();
conv.remove_state("{relation_name}.connected");
conv.remove_state("{relation_name}.master.data.available");
conv.remove_state("{relation_name}.worker.cert.available");
def set_worker_id(self, worker_id):
convs = self.conversations();
for conv in convs:
conv.set_local(key='worker_id', value=worker_id);
def get_worker_data(self):
convs = self.conversations();
final_data = [];
for conv in convs:
worker_unit = {};
cert = conv.get_remote('cert_to_sign');
worker_hostname = conv.get_remote('worker_hostname');
worker_unit['cert_to_sign'] = cert;
worker_unit['worker_hostname'] = worker_hostname;
final_data.append(worker_unit);
return final_data;
def send_worker_data(self, data):
convs = self.conversations();
for conv in convs:
conv.set_remote(data=data);
def send_signed_certs(self, certs):
convs = self.conversations();
for conv in convs:
for key, value in certs.items():
data_str = json.dumps(value);
conv.set_remote(key=key, value=data_str);
def get_signed_cert(self, worker_hostname):
convs = self.conversations();
final = None;
for conv in convs:
data = conv.get_remote(worker_hostname);
if data != '' and data != None:
data = json.loads(data);
final = data;
break;
return final;
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