[python_flask] Initial commit

scenarios/python_flask_3.11/Dockerfile

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+ARG BASE_IMAGE="prof-python-3.11"
+FROM $BASE_IMAGE
+
+# Copy the Python target into the container
+COPY ./scenarios/python_flask_3.11/requirements.txt /app/
+RUN chmod 644 /app/*
+
+# Set the working directory to the location of the program
+WORKDIR /app
+
+RUN pip install -r requirements.txt
+
+COPY ./scenarios/python_flask_3.11/app.py /app/
+
+ENV DD_PROFILING_ENABLED=true
+ENV DD_TRACE_ENABLED=false
+ENV DD_TRACE_DEBUG=false
+ENV DD_PROFILING_OUTPUT_PPROF="/app/data/profiles"
+ENV EXECUTION_TIME_SEC="5"
+
+# Run the program when the container starts
+CMD ["ddtrace-run", "flask", "run", "--host=0.0.0.0", "--port=8000"]

scenarios/python_flask_3.11/app.py

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+import os
+import signal
+import time
+from threading import Thread
+
+import requests
+from flask import Flask
+
+app = Flask(__name__)
+
+
+def _make_requests() -> None:
+    start = time.monotonic()
+    while time.monotonic() - start < 5.0:
+        try:
+            requests.get("http://localhost:8000", timeout=1)
+        except Exception as e:  # noqa: PERF203,BLE001
+            print(f"Error making request: {e}")
+
+    requests.get("http://localhost:8000/stop", timeout=1)
+
+
+def compute_big_number() -> int:
+    start = time.monotonic()
+    while time.monotonic() - start < 0.5:
+        x = 0
+        for i in range(1000000):
+            x += i
+    return x
+
+
+@app.route("/")
+def hello_world() -> str:
+    x = compute_big_number()
+    return f"<p>Hello, World! {x}</p>"
+
+
+@app.route("/stop")
+def stop() -> str:
+    os.kill(os.getpid(), signal.SIGINT)
+    return "Stopping..."
+
+
+t = Thread(target=_make_requests, name="Requester")
+t.daemon = True
+t.start()

scenarios/python_flask_3.11/expected_profile.json

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+{
+  "test_name": "python_flask_3.11",
+  "scale_by_duration": false,
+  "pprof-regex": "",
+  "stacks": [
+    {
+      "profile-type": "wall-time",
+      "pprof-regex": "",
+      "stack-content": [
+        {
+          "regular_expression": ".*_make_requests.*",
+          "percent": 33,
+          "error_margin": 5,
+          "labels": [
+            {
+              "key": "thread name",
+              "values": [
+                "Requester"
+              ]
+            }
+          ]
+        }
+      ]
+    },
+    {
+      "profile-type": "wall-time",
+      "pprof-regex": "",
+      "stack-content": [
+        {
+          "regular_expression": ".*hello_world;compute_big_number.*",
+          "percent": 33,
+          "error_margin": 5
+        }
+      ]
+    }
+  ]
+}

scenarios/python_flask_3.11/requirements.txt

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+ddtrace
+requests
+Flask