Add Kubernetes native launcher #30
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@@ -15,3 +15,7 @@ volumes/ | |
| *.key | ||
| *.pem | ||
| .jwks | ||
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| # Python | ||
| __pycache__/ | ||
| *.pyc | ||
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| @@ -0,0 +1,12 @@ | ||
| .git | ||
| .gitignore | ||
| __pycache__/ | ||
| *.pyc | ||
| *.pyo | ||
| *.pyd | ||
| .pytest_cache/ | ||
| .mypy_cache/ | ||
| .ruff_cache/ | ||
| dist/ | ||
| build/ | ||
| *.egg-info/ |
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| FROM python:3.11-alpine | ||
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| WORKDIR /app | ||
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| COPY app.py /app/app.py | ||
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| EXPOSE 8080 | ||
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| USER 65534:65534 | ||
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| CMD ["python", "/app/app.py"] |
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| @@ -0,0 +1,133 @@ | ||
| import json | ||
| import os | ||
| import ssl | ||
| import urllib.error | ||
| import urllib.parse | ||
| import urllib.request | ||
| from http.server import BaseHTTPRequestHandler, HTTPServer | ||
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| TOKEN_PATH = "/var/run/secrets/kubernetes.io/serviceaccount/token" | ||
| CA_PATH = "/var/run/secrets/kubernetes.io/serviceaccount/ca.crt" | ||
| API_HOST = os.environ.get("KUBERNETES_SERVICE_HOST", "kubernetes.default.svc") | ||
| API_PORT = os.environ.get("KUBERNETES_SERVICE_PORT", "443") | ||
| DEFAULT_NAMESPACE = os.environ.get("DEFAULT_NAMESPACE", "default") | ||
| SCHEDULER_AUTH_TOKEN = os.environ.get("SCHEDULER_AUTH_TOKEN", "") | ||
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| with open(TOKEN_PATH, "r", encoding="utf-8") as f: | ||
| SA_TOKEN = f.read().strip() | ||
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| SSL_CTX = ssl.create_default_context(cafile=CA_PATH) | ||
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| def k8s_request(method, path, body=None, content_type="application/json"): | ||
| url = f"https://{API_HOST}:{API_PORT}{path}" | ||
| data = body.encode("utf-8") if body is not None else None | ||
| req = urllib.request.Request(url, method=method, data=data) | ||
| req.add_header("Authorization", f"Bearer {SA_TOKEN}") | ||
| if body is not None: | ||
| req.add_header("Content-Type", content_type) | ||
| try: | ||
| with urllib.request.urlopen(req, context=SSL_CTX, timeout=30) as resp: | ||
| raw = resp.read().decode("utf-8") | ||
| return resp.getcode(), raw | ||
| except urllib.error.HTTPError as e: | ||
| raw = e.read().decode("utf-8") if e.fp else str(e) | ||
| return e.code, raw | ||
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| class Handler(BaseHTTPRequestHandler): | ||
| def _authorized(self): | ||
| if SCHEDULER_AUTH_TOKEN == "": | ||
| return False | ||
| auth = self.headers.get("Authorization", "") | ||
| return auth == f"Bearer {SCHEDULER_AUTH_TOKEN}" | ||
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| def _json(self, code, payload): | ||
| out = json.dumps(payload).encode("utf-8") | ||
| self.send_response(code) | ||
| self.send_header("Content-Type", "application/json") | ||
| self.send_header("Content-Length", str(len(out))) | ||
| self.end_headers() | ||
| self.wfile.write(out) | ||
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| def _read_json(self): | ||
| length = int(self.headers.get("Content-Length", "0")) | ||
| if length == 0: | ||
| return {} | ||
| raw = self.rfile.read(length).decode("utf-8") | ||
| return json.loads(raw) | ||
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| def do_GET(self): | ||
| if self.path == "/healthz": | ||
| return self._json(200, {"ok": True}) | ||
| if not self._authorized(): | ||
| return self._json(401, {"ok": False, "error": "unauthorized"}) | ||
| if self.path.startswith("/jobs/"): | ||
| name_q = self.path[len("/jobs/"):] | ||
| name, _, query = name_q.partition("?") | ||
| params = urllib.parse.parse_qs(query) | ||
| ns = params.get("namespace", [DEFAULT_NAMESPACE])[0] | ||
| code, raw = k8s_request("GET", f"/apis/batch/v1/namespaces/{ns}/jobs/{name}") | ||
| if code == 404: | ||
| return self._json(200, {"ok": True, "exists": False, "job": ""}) | ||
| if code >= 300: | ||
| return self._json(500, {"ok": False, "error": raw}) | ||
| return self._json(200, {"ok": True, "exists": True, "job": raw}) | ||
| return self._json(404, {"ok": False, "error": "not found"}) | ||
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| def do_POST(self): | ||
| if not self._authorized(): | ||
| return self._json(401, {"ok": False, "error": "unauthorized"}) | ||
| if self.path != "/jobs": | ||
| return self._json(404, {"ok": False, "error": "not found"}) | ||
| try: | ||
| body = self._read_json() | ||
| ns = body.get("namespace") or DEFAULT_NAMESPACE | ||
| manifest = body.get("manifest") | ||
| if not manifest: | ||
| return self._json(400, {"ok": False, "error": "manifest is required"}) | ||
| code, raw = k8s_request( | ||
| "POST", | ||
| f"/apis/batch/v1/namespaces/{ns}/jobs", | ||
| body=manifest, | ||
| content_type="application/yaml", | ||
| ) | ||
| if code >= 300: | ||
| return self._json(500, {"ok": False, "error": raw}) | ||
| return self._json(200, {"ok": True, "stdout": raw, "stderr": ""}) | ||
| except Exception as e: | ||
| return self._json(500, {"ok": False, "error": str(e)}) | ||
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| def do_DELETE(self): | ||
| if not self._authorized(): | ||
| return self._json(401, {"ok": False, "error": "unauthorized"}) | ||
| if not self.path.startswith("/jobs/"): | ||
| return self._json(404, {"ok": False, "error": "not found"}) | ||
| name_q = self.path[len("/jobs/"):] | ||
| name, _, query = name_q.partition("?") | ||
| params = urllib.parse.parse_qs(query) | ||
| ns = params.get("namespace", [DEFAULT_NAMESPACE])[0] | ||
| delete_opts = '{"apiVersion":"batch/v1","kind":"DeleteOptions","propagationPolicy":"Background"}' | ||
| code, raw = k8s_request( | ||
| "DELETE", | ||
| f"/apis/batch/v1/namespaces/{ns}/jobs/{name}", | ||
| body=delete_opts, | ||
| content_type="application/json", | ||
| ) | ||
| if code == 404: | ||
| return self._json( | ||
| 200, | ||
| {"ok": True, "stdout": f"job.batch/{name} already deleted", "stderr": ""}, | ||
| ) | ||
| if code >= 300: | ||
| return self._json(500, {"ok": False, "error": raw}) | ||
| return self._json(200, {"ok": True, "stdout": raw, "stderr": ""}) | ||
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| def log_message(self, fmt, *args): | ||
| return | ||
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| if __name__ == "__main__": | ||
| server = HTTPServer(("0.0.0.0", 8080), Handler) | ||
| server.serve_forever() |
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Why removing this? The dependencies are defined in composer.json and are versioned, so the builds should be reproducible