"""
Python invocation of several parallel publish-notifications RPCs.
"""
from robot.api import logger
import Queue
import requests
import string
import threading
_globals = {}
def _send_http_request_thread_impl(rqueue, url, data, http_timeout):
"""Start either publish or write transactions rpc based on input.
:param rqueue: result queue
:type rqueue: Queue.Queue
:param url: rpc url
:type url: string
:param data: http request content
:type data: string
:param http_timeout: http response timeout
:type http_timeout: int
"""
logger.info('rpc indoked with details: {}'.format(data))
try:
resp = requests.post(url=url, headers={'Content-Type': 'application/xml'},
data=data, auth=('admin', 'admin'), timeout=http_timeout)
except Exception as exc:
resp = exc
logger.debug(exc)
rqueue.put(resp)
def _initiate_rpcs(host_list, prefix_list, url_templ, data_templ, subst_dict):
"""Initiate rpc on given hosts.
:param host_list: list of ip address of odl nodes
:type host_list: list of strings
:param id_prefix: list of node indexes which coresponds to the ip addresses
:type id_prefix: string
:param url_templ: url template
:type url_templ: string.Template object
:param data_templ: http request data
:type data_templ: string.Template object
:param subst_dict: dictionary with key value pairs to be used with template
:type subst_dict: dict
"""
resqueue = _globals.pop('result_queue', Queue.Queue())
lthreads = _globals.pop('threads', [])
for i, host in enumerate(host_list):
subst_dict.update({'ID': '{}{}'.format(subst_dict['ID_PREFIX'], prefix_list[i])})
url = url_templ.substitute({'HOST': host})
data = data_templ.substitute(subst_dict)
timeout = int(subst_dict['DURATION'])+150
logger.info('url: {}, data: {}, timeout: {}'.format(url, data, timeout))
t = threading.Thread(target=_send_http_request_thread_impl,
args=(resqueue, url, data, timeout))
t.daemon = True
t.start()
lthreads.append(t)
_globals.update({'threads': lthreads, 'result_queue': resqueue})
def start_write_transactions_on_nodes(host_list, prefix_list, id_prefix, duration, rate, chained_flag=False,
reset_globals=True):
"""Invoke write-transactions rpc on given nodes.
:param host_list: list of ip address of odl nodes
:type host_list: list of strings
:param prefix_list: list of node indexes which coresponds to the ip addresses
:type prefix_list: list
:param id_prefix: identifier prefix
:type id_prefix: string
:param duration: time in seconds
:type duration: int
:param rate: writing transactions rate in transactions per second
:type rate: int
:param chained_flag: specify chained vs. simple transactions
:type chained_flag: bool
:param reset_globals: reset global variable dict
:type reset_globals: bool
"""
if reset_globals:
_globals.clear()
logger.info(
"Input parameters: host_list:{}, prefix_list:{}, id_prefix:{}, duration:{}, rate:{}, chained_flag:{}".format(
host_list, prefix_list, id_prefix, duration, rate, chained_flag))
datat = string.Template('''
$ID
$DURATION
$RATE
$CHAINED_FLAG
''')
subst_dict = {'ID_PREFIX': id_prefix, 'DURATION': duration, 'RATE': rate, 'CHAINED_FLAG': chained_flag}
urlt = string.Template('''http://$HOST:8181/restconf/operations/odl-mdsal-lowlevel-control:write-transactions''')
_initiate_rpcs(host_list, prefix_list, urlt, datat, subst_dict)
def start_produce_transactions_on_nodes(host_list, prefix_list, id_prefix,
duration, rate, isolated_transactions_flag=False, reset_globals=True):
"""Invoke produce-transactions rpcs on given nodes.
:param host_list: list of ip address of odl nodes
:type host_list: list of strings
:param prefix_list: list of node indexes which coresponds to the ip addresses
:type prefix_list: list
:param id_prefix: identifier prefix
:type id_prefix: string
:param duration: time in seconds
:type duration: int
:param rate: produce transactions rate in transactions per second
:type rate: int
:param isolated_transactions_flag: isolated transactions flag
:type isolated_transactions_flag: bool
:param reset_globals: reset global variable dict
:type reset_globals: bool
"""
if reset_globals:
_globals.clear()
msg = "host_list:{}, prefix_list:{} ,id_prefix:{}, duration:{}, rate:{}, isolated_transactions:{}".format(
host_list, prefix_list, id_prefix, duration, rate, isolated_transactions_flag)
msg = "Input parameters: " + msg
logger.info(msg)
datat = string.Template('''
$ID
$DURATION
$RATE
$ISOLATED_TRANSACTIONS
''')
subst_dict = {'ID_PREFIX': id_prefix, 'DURATION': duration, 'RATE': rate,
'ISOLATED_TRANSACTIONS': isolated_transactions_flag}
urlt = string.Template('''http://$HOST:8181/restconf/operations/odl-mdsal-lowlevel-control:produce-transactions''')
_initiate_rpcs(host_list, prefix_list, urlt, datat, subst_dict)
def wait_for_transactions():
"""Blocking call, waitig for responses from all threads."""
lthreads = _globals.pop('threads')
resqueue = _globals.pop('result_queue')
for t in lthreads:
t.join()
results = []
while not resqueue.empty():
results.append(resqueue.get())
for rsp in results:
if isinstance(rsp, requests.Response):
logger.info(rsp.text)
else:
logger.info(rsp)
return results
def get_next_transactions_response():
"""Get http response from write-transactions rpc if available."""
resqueue = _globals.get('result_queue')
if not resqueue.empty():
rsp = resqueue.get()
if isinstance(rsp, requests.Response):
logger.info(rsp.text)
else:
logger.info(rsp)
return rsp
return None