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#################################################################
#
# Copyright 2015 Ericsson AB
# All Rights Reserved
#
# Author: Manuel Buil <Manuel.Buil@ericsson.com>
# Version: 0.1
#
#################################################################

from novaclient.v2 import client as nova
from keystoneclient.v2_0 import client as keystone
from glanceclient import client as glance


class OpenStack_API:

    def __init__(self, authurl, tenantName, tenantUser, tenantPass):
        self.authurl = authurl
        self.tenantName = tenantName
        self.tenantUser = tenantUser
        self.tenantPass = tenantPass

    def get_token(self):
        # Establish connection to Openstack controller
        osconn = keystone.Client(username=self.tenantUser,
                                 password=self.tenantPass,
                                 tenant_name=self.tenantName,
                                 auth_url=self.authurl)
        token = osconn.auth_token
        return token

    def get_endpoint(self, service_type, endpoint_type):
        # Establish connection to Openstack controller
        osconn = keystone.Client(username=self.tenantUser,
                                 password=self.tenantPass,
                                 tenant_name=self.tenantName,
                                 auth_url=self.authurl)
        endpoint = osconn.service_catalog.url_for(
            service_type=service_type, endpoint_type=endpoint_type)
        return endpoint

    def find_image(self, SF_type):
        # Find in glance the image that matches the SF we want to deploy
        token = self.get_token()
        endpoint = self.get_endpoint('image', 'publicURL')
        osconn = glance.Client('1', endpoint=endpoint, token=token)
        image_list = osconn.images.list()
        for item in image_list:
            try:
                image_type = item.properties.get('image_type', None)
                image_id = None
                if (image_type == SF_type):
                    image_id = item.id
                    break
            except:
                print("Errrorr")

        # Search image which matches the SF type
        return image_id

    def create_vm(self, name, image, flavor, nics=None):
        # Establish connection to Openstack controller
        osconn = nova.Client(self.tenantUser,
                             self.tenantPass,
                             self.tenantName,
                             self.authurl,
                             service_type="compute")
        try:
            if nics is None:
                vm = osconn.servers.create(name, image, flavor)
            else:
                vm = osconn.servers.create(name, image, flavor, nics)
        except:
            print("Something wrong happened while creating the VM")
            vm = None
        return vm