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#!/usr/bin/env python
#
# jose.lausuch@ericsson.com
# All rights reserved. This program and the accompanying materials
# are made available under the terms of the Apache License, Version 2.0
# which accompanies this distribution, and is available at
# http://www.apache.org/licenses/LICENSE-2.0
#
import re, json, os, urllib2, shutil, subprocess, sys
def check_credentials():
"""
Check if the OpenStack credentials (openrc) are sourced
"""
#TODO: there must be a short way to do this, doing if os.environ["something"] == "" throws an error
try:
os.environ['OS_AUTH_URL']
except KeyError:
return False
try:
os.environ['OS_USERNAME']
except KeyError:
return False
try:
os.environ['OS_PASSWORD']
except KeyError:
return False
try:
os.environ['OS_TENANT_NAME']
except KeyError:
return False
try:
os.environ['OS_REGION_NAME']
except KeyError:
return False
return True
def get_credentials(service):
"""Returns a creds dictionary filled with the following keys:
* username
* password/api_key (depending on the service)
* tenant_name/project_id (depending on the service)
* auth_url
:param service: a string indicating the name of the service
requesting the credentials.
"""
#TODO: get credentials from the openrc file
creds = {}
# Unfortunately, each of the OpenStack client will request slightly
# different entries in their credentials dict.
if service.lower() in ("nova", "cinder"):
password = "api_key"
tenant = "project_id"
else:
password = "password"
tenant = "tenant_name"
# The most common way to pass these info to the script is to do it through
# environment variables.
creds.update({
"username": os.environ.get('OS_USERNAME', "admin"), # add your cloud username details
password: os.environ.get("OS_PASSWORD", 'admin'), # add password
"auth_url": os.environ.get("OS_AUTH_URL","http://192.168.20.71:5000/v2.0"), # Auth URL
tenant: os.environ.get("OS_TENANT_NAME", "admin"),
})
return creds
def get_instance_status(nova_client,instance):
try:
instance = nova_client.servers.get(instance.id)
return instance.status
except:
return None
def get_instance_by_name(nova_client, instance_name):
try:
instance = nova_client.servers.find(name=instance_name)
return instance
except:
return None
def create_neutron_net(neutron_client, name):
json_body = {'network': {'name': name,
'admin_state_up': True}}
try:
network = neutron_client.create_network(body=json_body)
network_dict = network['network']
return network_dict['id']
except:
print "Error:", sys.exc_info()[0]
return False
def delete_neutron_net(neutron_client, network_id):
try:
neutron_client.delete_network(network_id)
return True
except:
print "Error:", sys.exc_info()[0]
return False
def create_neutron_subnet(neutron_client, name, cidr, net_id):
json_body = {'subnets': [{'name': name, 'cidr': cidr,
'ip_version': 4, 'network_id': net_id}]}
try:
subnet = neutron_client.create_subnet(body=json_body)
return subnet['subnets'][0]['id']
except:
print "Error:", sys.exc_info()[0]
return False
def delete_neutron_subnet(neutron_client, subnet_id):
try:
neutron_client.delete_subnet(subnet_id)
return True
except:
print "Error:", sys.exc_info()[0]
return False
def create_neutron_router(neutron_client, name):
json_body = {'router': {'name': name, 'admin_state_up': True}}
try:
router = neutron_client.create_router(json_body)
return router['router']['id']
except:
print "Error:", sys.exc_info()[0]
return False
def delete_neutron_router(neutron_client, router_id):
json_body = {'router': {'id': router_id}}
try:
neutron_client.delete_router(router=router_id)
return True
except:
print "Error:", sys.exc_info()[0]
return False
def add_interface_router(neutron_client, router_id, subnet_id):
json_body = {"subnet_id": subnet_id}
try:
neutron_client.add_interface_router(router=router_id, body=json_body)
return True
except:
print "Error:", sys.exc_info()[0]
return False
def remove_interface_router(neutron_client, router_id, subnet_id):
json_body = {"subnet_id": subnet_id}
try:
neutron_client.remove_interface_router(router=router_id, body=json_body)
return True
except:
print "Error:", sys.exc_info()[0]
return False
def create_neutron_port(neutron_client, name, network_id, ip):
json_body = {'port': {
'admin_state_up': True,
'name': name,
'network_id': network_id,
'fixed_ips': [{"ip_address": ip}]
}}
try:
port = neutron_client.create_port(body=json_body)
return port['port']['id']
except:
print "Error:", sys.exc_info()[0]
return False
def get_network_id(neutron_client, network_name):
networks = neutron_client.list_networks()['networks']
id = ''
for n in networks:
if n['name'] == network_name:
id = n['id']
break
return id
def check_neutron_net(neutron_client, net_name):
for network in neutron_client.list_networks()['networks']:
if network['name'] == net_name :
for subnet in network['subnets']:
return True
return False
def check_internet_connectivity(url='http://www.google.com/'):
"""
Check if there is access to the internet
"""
try:
urllib2.urlopen(url, timeout=5)
return True
except urllib.request.URLError:
return False
def download_url(url, dest_path):
"""
Download a file to a destination path given a URL
"""
name = url.rsplit('/')[-1]
dest = dest_path + name
try:
response = urllib2.urlopen(url)
except (urllib2.HTTPError, urllib2.URLError):
return False
with open(dest, 'wb') as f:
f.write(response.read())
return True
def execute_command(cmd, logger=None):
"""
Execute Linux command
"""
if logger:
logger.debug('Executing command : {}'.format(cmd))
output_file = "output.txt"
f = open(output_file, 'w+')
p = subprocess.call(cmd,shell=True, stdout=f, stderr=subprocess.STDOUT)
f.close()
f = open(output_file, 'r')
result = f.read()
if result != "" and logger:
logger.debug(result)
if p == 0 :
return True
else:
if logger:
logger.error("Error when executing command %s" %cmd)
exit(-1)
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