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Diffstat (limited to 'benchmarks/py-locust/files/extra-EXAMPLES-events.py')
-rw-r--r-- | benchmarks/py-locust/files/extra-EXAMPLES-events.py | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/benchmarks/py-locust/files/extra-EXAMPLES-events.py b/benchmarks/py-locust/files/extra-EXAMPLES-events.py new file mode 100644 index 000000000000..7b1de7fafee2 --- /dev/null +++ b/benchmarks/py-locust/files/extra-EXAMPLES-events.py @@ -0,0 +1,69 @@ +# -*- coding: utf-8 -*- + +""" +This is an example of a locustfile that uses Locust's built in event hooks to +track the sum of the content-length header in all successful HTTP responses +""" + +from locust import HttpLocust, TaskSet, events, task, web + + +class MyTaskSet(TaskSet): + @task(2) + def index(l): + l.client.get("/") + + @task(1) + def stats(l): + l.client.get("/stats/requests") + +class WebsiteUser(HttpLocust): + host = "http://127.0.0.1:8089" + min_wait = 2000 + max_wait = 5000 + task_set = MyTaskSet + + +""" +We need somewhere to store the stats. + +On the master node stats will contain the aggregated sum of all content-lengths, +while on the slave nodes this will be the sum of the content-lengths since the +last stats report was sent to the master +""" +stats = {"content-length":0} + +def on_request_success(request_type, name, response_time, response_length): + """ + Event handler that get triggered on every successful request + """ + stats["content-length"] += response_length + +def on_report_to_master(client_id, data): + """ + This event is triggered on the slave instances every time a stats report is + to be sent to the locust master. It will allow us to add our extra content-length + data to the dict that is being sent, and then we clear the local stats in the slave. + """ + data["content-length"] = stats["content-length"] + stats["content-length"] = 0 + +def on_slave_report(client_id, data): + """ + This event is triggered on the master instance when a new stats report arrives + from a slave. Here we just add the content-length to the master's aggregated + stats dict. + """ + stats["content-length"] += data["content-length"] + +# Hook up the event listeners +events.request_success += on_request_success +events.report_to_master += on_report_to_master +events.slave_report += on_slave_report + +@web.app.route("/content-length") +def total_content_length(): + """ + Add a route to the Locust web app, where we can see the total content-length + """ + return "Total content-length recieved: %i" % stats["content-length"] |