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Locust is a simple Python-based load test tool. It can run with and without web UI, also it supports standalone and master/slave modes. User can write tests with a small set of APIs provided by Locust, and then run the tests in Locust by specifying number of tests to run, the speed of test etc. The test result can be viewed on web UI or from an output file. See the tool's wiki page at https://docs.locust.io for more details. Also an informative blog comparing JMeter with Locust is on https://www.blazemeter.com/blog/jmeter-vs-locust-which-one-should-you-choose.
Installation
The following steps is to install Locust in a container running on ONAP Robot VM
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root@26a6a1c758b4:/# cat locustfile.py
import random
import string
from locust import HttpLocust, TaskSet, task
class UserBehavior(TaskSet):
def on_start(self):
""" on_start is called when a Locust start before any task is scheduled """
self.init()
def init(self):
pass
@task(1)
def DCI(self):
method = "POST"
url = "/ecomp/mso/infra/e2eServiceInstances/v3"
headers = {"Accept":"application/json","Content-Type":"application/json","Authorization":"Basic SW5mcmFQb3J0YWxDbGllbnQ6cGFzc3dvcmQxJA=="}
service_instance_name = ''.join(random.choice(string.ascii_uppercase + string.digits) for _ in range(10))
data = "{\"service\": {\"name\": \"E2E_volte_%s\", \"description\": \"E2E_volte_ONAP_deploy\", \"serviceDefId\": \"a16eb184-4a81-4c8c-89df-c287d390315a\", \"templateId\": \"012c3446-51db-4a2a-9e64-a936f10a5e3c\", \"parameters\": { \"globalSubscriberId\": \"Demonstration\", \"subscriberName\": \"Demonstration\", \"serviceType\": \"vIMS\", \"templateName\": \"VoLTE e2e Service:null\", \"resources\": [ { \"resourceName\": \"VL OVERLAYTUNNEL\", \"resourceDefId\": \"671d4757-b018-47ab-9df3-351c3bda0a98\", \"resourceId\": \"e859b0fd-d928-4cc8-969e-0fee7795d623\", \"nsParameters\": { \"locationConstraints\": [], \"additionalParamForNs\": { \"site2_vni\": \"5010\", \"site1_localNetworkAll\": \"false\", \"site1_vni\": \"5010\", \"site1_exportRT1\": \"11:1\", \"description\": \"overlay\", \"site2_localNetworkAll\": \"false\", \"site1_routerId\": \"9.9.9.9\", \"site1_fireWallEnable\": \"false\", \"site1_networkName\": \"network1\", \"site2_description\": \"overlay\", \"site1_importRT1\": \"11:1\", \"site1_description\": \"overlay\", \"site2_networkName\": \"network3\", \"name\": \"overlay\", \"site2_fireWallEnable\": \"false\", \"site2_id\": \"ZTE-DCI-Controller\", \"site2_routerId\": \"9.9.9.9\", \"site2_importRT1\": \"11:1\", \"site2_exportRT1\": \"11:1\", \"site2_fireWallId\": \"false\", \"site1_id\": \"DCI-Controller-1\", \"tunnelType\": \"L3-DCI\" } } } ] } } }" % service_instance_name
print(data)
response = self.client.request(method, url, headers=headers, data=data)
print(response.json())
class WebsiteUser(HttpLocust):
task_set = UserBehavior
min_wait = 5000
max_wait = 9000
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Then you can specify the number of the concurrent users and the rate of tests to spawn up those users on UI, and start the test
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root@26a6a1c758b4:/# locust -f ./locustfile.py --host=http://10.0.5.1:8080 --csv=foobar --no-web -c 2 -r 1 -n 5
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There's also an ability to insert the host into the locust file, Use the same file and edit the section with the below:
class WebsiteUser(HttpLocust):
task_set = UserBehavior
host = "http://10.0.5.1:8080"