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feat(load-generator): add spans for feature flag evaluation #2119

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feat(load-generator): add spans for feature flag evaluation #2119

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28bba13
feat(load-balancer): add spans for feature flag evaluation
aepfli Mar 13, 2025
1ac3a7e
fixup: span name fix
aepfli Mar 13, 2025
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3 changes: 3 additions & 0 deletions CHANGELOG.md
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Original file line number Diff line number Diff line change
Expand Up @@ -15,6 +15,9 @@ the release.
* [load-generator] Change OpenFeature Evaluation to Remote Evaluation Protocol,
based on [this issue in OpenFeature/python-sdk-contrib](https://github.com/open-feature/python-sdk-contrib/issues/198)
([#2114](https://github.com/open-telemetry/opentelemetry-demo/pull/2114))
* [load-generator] Create well-named spans for each load task, to allow
enrichment with information like flag evaluations.
([#2119](https://github.com/open-telemetry/opentelemetry-demo/pull/2119))

## 2.0.1

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12 changes: 12 additions & 0 deletions src/load-generator/locustfile.py
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Expand Up @@ -36,6 +36,7 @@
from openfeature import api
from openfeature.contrib.provider.ofrep import OFREPProvider
from openfeature.contrib.hook.opentelemetry import TracingHook
from opentelemetry.trace import Tracer

from playwright.async_api import Route, Request

Expand Down Expand Up @@ -106,34 +107,42 @@ def get_flagd_value(FlagName):

class WebsiteUser(HttpUser):
wait_time = between(1, 10)
# Creates a tracer from the global tracer provider
tracer = trace.get_tracer("load-generator")

@task(1)
@tracer.start_as_current_span("view home")
def index(self):
self.client.get("/")

@task(10)
@tracer.start_as_current_span("browse product")
def browse_product(self):
self.client.get("/api/products/" + random.choice(products))

@task(3)
@tracer.start_as_current_span("get recommendations")
def get_recommendations(self):
params = {
"productIds": [random.choice(products)],
}
self.client.get("/api/recommendations", params=params)

@task(3)
@tracer.start_as_current_span("get ads")
def get_ads(self):
params = {
"contextKeys": [random.choice(categories)],
}
self.client.get("/api/data/", params=params)

@task(3)
@tracer.start_as_current_span("view cart")
def view_cart(self):
self.client.get("/api/cart")

@task(2)
@tracer.start_as_current_span("add to cart")
def add_to_cart(self, user=""):
if user == "":
user = str(uuid.uuid1())
Expand All @@ -149,6 +158,7 @@ def add_to_cart(self, user=""):
self.client.post("/api/cart", json=cart_item)

@task(1)
@tracer.start_as_current_span("checkout with items")
def checkout(self):
# checkout call with an item added to cart
user = str(uuid.uuid1())
Expand All @@ -158,6 +168,7 @@ def checkout(self):
self.client.post("/api/checkout", json=checkout_person)

@task(1)
@tracer.start_as_current_span("checkout with multiple items")
def checkout_multi(self):
# checkout call which adds 2-4 different items to cart before checkout
user = str(uuid.uuid1())
Expand All @@ -168,6 +179,7 @@ def checkout_multi(self):
self.client.post("/api/checkout", json=checkout_person)

@task(5)
@tracer.start_as_current_span("flood home")
def flood_home(self):
for _ in range(0, get_flagd_value("loadGeneratorFloodHomepage")):
self.client.get("/")
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