feat(k6): add bespoke load test files

.gitignore

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+__pycache__/
+*.pyc
+*.pyo
+.venv/
+venv/
+.env
+*.egg-info/
+dist/
+.DS_Store

Dockerfile

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+# ---- Build stage (install deps) ----
+FROM python:3.12-slim AS build
+WORKDIR /app
+
+RUN pip install --upgrade pip
+COPY requirements.txt .
+RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
+
+# ---- Runtime stage ----
+FROM python:3.12-slim
+WORKDIR /app
+
+# Non-root user
+RUN addgroup --system appgroup && adduser --system --ingroup appgroup appuser
+USER appuser
+
+COPY --from=build /install /usr/local
+COPY app/ ./app/
+
+EXPOSE 8000
+
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8000/health')" || exit 1
+
+CMD ["opentelemetry-instrument", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]

app/__init__.py

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+from app.main import app  # noqa: F401 — re-export for uvicorn entrypoint

app/main.py

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+from __future__ import annotations
+
+from threading import Lock
+from typing import Optional
+
+from fastapi import FastAPI, HTTPException
+from prometheus_fastapi_instrumentator import Instrumentator
+from pydantic import BaseModel
+
+app = FastAPI(
+    title="alex-1",
+    description="alex-1",
+    version="0.1.0",
+)
+
+# Expose /metrics for Prometheus scraping
+Instrumentator().instrument(app).expose(app)
+
+
+# ---------------------------------------------------------------------------
+# Domain model
+# ---------------------------------------------------------------------------
+class ItemRequest(BaseModel):
+    name: str
+    description: str = ""
+
+
+class Item(BaseModel):
+    id: int
+    name: str
+    description: str
+
+
+# ---------------------------------------------------------------------------
+# In-memory store (thread-safe)
+# ---------------------------------------------------------------------------
+_store: dict[int, Item] = {}
+_counter = 0
+_lock = Lock()
+
+
+def _next_id() -> int:
+    global _counter
+    with _lock:
+        _counter += 1
+        return _counter
+
+
+# ---------------------------------------------------------------------------
+# Routes
+# ---------------------------------------------------------------------------
+@app.get("/health", tags=["observability"])
+def health() -> dict:
+    return {"status": "UP"}
+
+
+@app.get("/api/items", response_model=list[Item], tags=["items"])
+def list_items():
+    return list(_store.values())
+
+
+@app.post("/api/items", response_model=Item, status_code=201, tags=["items"])
+def create_item(body: ItemRequest):
+    item = Item(id=_next_id(), name=body.name, description=body.description)
+    _store[item.id] = item
+    return item
+
+
+@app.get("/api/items/{item_id}", response_model=Item, tags=["items"])
+def get_item(item_id: int):
+    item = _store.get(item_id)
+    if item is None:
+        raise HTTPException(status_code=404, detail="Item not found")
+    return item
+
+
+@app.put("/api/items/{item_id}", response_model=Item, tags=["items"])
+def update_item(item_id: int, body: ItemRequest):
+    item = _store.get(item_id)
+    if item is None:
+        raise HTTPException(status_code=404, detail="Item not found")
+    updated = Item(id=item_id, name=body.name, description=body.description)
+    _store[item_id] = updated
+    return updated
+
+
+@app.delete("/api/items/{item_id}", tags=["items"])
+def delete_item(item_id: int):
+    _store.pop(item_id, None)
+    return {"deleted": item_id}

k6/configmap.yaml

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+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: k6-test-alex-1
+  namespace: alex-dev
+  labels:
+    app: alex-1
+    app.kubernetes.io/managed-by: backstage
+    app.kubernetes.io/component: load-testing
+data:
+  K6_OUT: opentelemetry
+  K6_OTEL_GRPC_EXPORTER_INSECURE: 'true'
+  K6_OTEL_GRPC_EXPORTER_ENDPOINT: otel-collector.monitoring.svc.cluster.local:4317
+  K6_OTEL_METRIC_PREFIX: k6_
+  K6_OTEL_FLUSH_INTERVAL: '1000'
+  K6_OTEL_EXPORT_INTERVAL: '5000'
+  K6_OTEL_SERVICE_NAME: k6-alex-1
+  load-test.js: "import http from 'k6/http';\nimport { check, sleep, group } from\
+    \ 'k6';\n\nconst vus = parseInt(__ENV.TEST_VUS || '10');\nconst duration = __ENV.TEST_DURATION\
+    \ || '30s';\nconst targetUrl = __ENV.TARGET_URL || 'http://alex-1.alex-dev.svc.cluster.local:8000';\n\
+    \nexport const options = {\n  scenarios: {\n    load_test: {\n      executor:\
+    \ 'ramping-vus',\n      startVUs: 0,\n      stages: [\n        { duration: '10s',\
+    \ target: vus },\n        { duration: duration, target: vus },\n        { duration:\
+    \ '5s', target: 0 },\n      ],\n    },\n  },\n  thresholds: {\n    http_req_duration:\
+    \ ['p(95)<500'],\n    http_req_failed: ['rate<0.01'],\n  },\n};\n\nhttp.setResponseCallback(http.expectedStatuses({\
+    \ min: 200, max: 399 }));\n\nexport default function () {\n  group('Observability\
+    \ API', () => {\n    const res = http.get(`${targetUrl}/health`);\n    check(res,\
+    \ {\n      'status is 200': (r) => r.status === 200,\n      'response time < 500ms':\
+    \ (r) => r.timings.duration < 500,\n      'body contains status': (r) => r.json().status\
+    \ === 'UP',\n    });\n  });\n\n  sleep(0.5);\n\n  group('Items API', () => {\n\
+    \    // List items\n    const listRes = http.get(`${targetUrl}/api/items`);\n\
+    \    check(listRes, {\n      'status is 200': (r) => r.status === 200,\n     \
+    \ 'response time < 500ms': (r) => r.timings.duration < 500,\n      'body is an\
+    \ array': (r) => Array.isArray(r.json()),\n    });\n\n    // Create item\n   \
+    \ const createBody = { name: 'Test Item', description: 'A test item description'\
+    \ };\n    const createRes = http.post(`${targetUrl}/api/items`, JSON.stringify(createBody),\
+    \ {\n      headers: { 'Content-Type': 'application/json' },\n    });\n    check(createRes,\
+    \ {\n      'status is 201': (r) => r.status === 201,\n      'response time < 500ms':\
+    \ (r) => r.timings.duration < 500,\n      'body contains id': (r) => r.json().id\
+    \ !== undefined,\n    });\n\n    const itemId = createRes.json().id;\n\n    //\
+    \ Get item\n    const getRes = http.get(`${targetUrl}/api/items/${itemId}`);\n\
+    \    check(getRes, {\n      'status is 200': (r) => r.status === 200,\n      'response\
+    \ time < 500ms': (r) => r.timings.duration < 500,\n      'body contains correct\
+    \ id': (r) => r.json().id === itemId,\n    });\n\n    // Update item\n    const\
+    \ updateBody = { name: 'Updated Item', description: 'Updated description' };\n\
+    \    const updateRes = http.put(`${targetUrl}/api/items/${itemId}`, JSON.stringify(updateBody),\
+    \ {\n      headers: { 'Content-Type': 'application/json' },\n    });\n    check(updateRes,\
+    \ {\n      'status is 200': (r) => r.status === 200,\n      'response time < 500ms':\
+    \ (r) => r.timings.duration < 500,\n      'body contains updated name': (r) =>\
+    \ r.json().name === 'Updated Item',\n    });\n\n    // Delete item\n    const\
+    \ deleteRes = http.del(`${targetUrl}/api/items/${itemId}`);\n    check(deleteRes,\
+    \ {\n      'status is 200': (r) => r.status === 200,\n      'response time < 500ms':\
+    \ (r) => r.timings.duration < 500,\n      'body contains deleted id': (r) => r.json().deleted\
+    \ === itemId,\n    });\n  });\n\n  sleep(0.5);\n}"

k6/load-test.js

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+import http from 'k6/http';
+import { check, sleep, group } from 'k6';
+
+const vus = parseInt(__ENV.TEST_VUS || '10');
+const duration = __ENV.TEST_DURATION || '30s';
+const targetUrl = __ENV.TARGET_URL || 'http://alex-1.alex-dev.svc.cluster.local:8000';
+
+export const options = {
+  scenarios: {
+    load_test: {
+      executor: 'ramping-vus',
+      startVUs: 0,
+      stages: [
+        { duration: '10s', target: vus },
+        { duration: duration, target: vus },
+        { duration: '5s', target: 0 },
+      ],
+    },
+  },
+  thresholds: {
+    http_req_duration: ['p(95)<500'],
+    http_req_failed: ['rate<0.01'],
+  },
+};
+
+http.setResponseCallback(http.expectedStatuses({ min: 200, max: 399 }));
+
+export default function () {
+  group('Observability API', () => {
+    const res = http.get(`${targetUrl}/health`);
+    check(res, {
+      'status is 200': (r) => r.status === 200,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body contains status': (r) => r.json().status === 'UP',
+    });
+  });
+
+  sleep(0.5);
+
+  group('Items API', () => {
+    // List items
+    const listRes = http.get(`${targetUrl}/api/items`);
+    check(listRes, {
+      'status is 200': (r) => r.status === 200,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body is an array': (r) => Array.isArray(r.json()),
+    });
+
+    // Create item
+    const createBody = { name: 'Test Item', description: 'A test item description' };
+    const createRes = http.post(`${targetUrl}/api/items`, JSON.stringify(createBody), {
+      headers: { 'Content-Type': 'application/json' },
+    });
+    check(createRes, {
+      'status is 201': (r) => r.status === 201,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body contains id': (r) => r.json().id !== undefined,
+    });
+
+    const itemId = createRes.json().id;
+
+    // Get item
+    const getRes = http.get(`${targetUrl}/api/items/${itemId}`);
+    check(getRes, {
+      'status is 200': (r) => r.status === 200,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body contains correct id': (r) => r.json().id === itemId,
+    });
+
+    // Update item
+    const updateBody = { name: 'Updated Item', description: 'Updated description' };
+    const updateRes = http.put(`${targetUrl}/api/items/${itemId}`, JSON.stringify(updateBody), {
+      headers: { 'Content-Type': 'application/json' },
+    });
+    check(updateRes, {
+      'status is 200': (r) => r.status === 200,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body contains updated name': (r) => r.json().name === 'Updated Item',
+    });
+
+    // Delete item
+    const deleteRes = http.del(`${targetUrl}/api/items/${itemId}`);
+    check(deleteRes, {
+      'status is 200': (r) => r.status === 200,
+      'response time < 500ms': (r) => r.timings.duration < 500,
+      'body contains deleted id': (r) => r.json().deleted === itemId,
+    });
+  });
+
+  sleep(0.5);
+}

k6/testrun.yaml

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+apiVersion: k6.io/v1alpha1
+kind: TestRun
+metadata:
+  name: k6-alex-1
+  namespace: alex-dev
+  labels:
+    app: alex-1
+    backstage.io/component: alex-1
+    app.kubernetes.io/managed-by: backstage
+    app.kubernetes.io/component: load-testing
+spec:
+  parallelism: 1
+  script:
+    configMap:
+      name: k6-test-alex-1
+      file: load-test.js
+  runner:
+    image: grafana/k6:latest
+    envFrom:
+    - configMapRef:
+        name: k6-test-alex-1
+    env:
+    - name: K6_OTEL_SERVICE_NAME
+      value: k6-alex-1

requirements.txt

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+fastapi==0.111.0
+uvicorn[standard]==0.29.0
+prometheus-fastapi-instrumentator==7.0.0
+opentelemetry-distro[otlp]>=0.51b0
+opentelemetry-instrumentation-fastapi>=0.51b0
+pytest>=8.0
+httpx>=0.27
+pytest-asyncio>=0.23