beatz174-bit
101 lines
2.9 KiB
Python
101 lines
2.9 KiB
Python
import logging
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import os
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import time
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import requests
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from flask import Flask, Response, request
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app = Flask(__name__)
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logging.basicConfig(
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level=os.environ.get("LOG_LEVEL", "INFO"),
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format="%(asctime)s %(levelname)s %(message)s",
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)
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logger = logging.getLogger("mtls-bridge")
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# Config via env
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TARGET_URL = os.environ.get("TARGET_URL")
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CLIENT_CERT = os.environ.get("CLIENT_CERT", "/certs/client.crt")
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CLIENT_KEY = os.environ.get("CLIENT_KEY", "/certs/client.key")
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CA_CERT = os.environ.get("CA_CERT", "/certs/ca.crt")
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TIMEOUT = int(os.environ.get("TIMEOUT", "5"))
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logger.info(
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"mtls-bridge starting target_url=%s timeout=%ss cert=%s key=%s ca=%s log_level=%s",
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TARGET_URL,
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TIMEOUT,
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CLIENT_CERT,
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CLIENT_KEY,
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CA_CERT,
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os.environ.get("LOG_LEVEL", "INFO"),
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)
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@app.route("/health", methods=["GET"])
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def health():
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return "OK", 200
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@app.route("/", defaults={"path": ""}, methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
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@app.route("/<path:path>", methods=["GET", "POST", "PUT", "DELETE", "PATCH"])
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def proxy(path):
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request_path = f"/{path}" if path else "/"
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request_size = len(request.get_data(cache=True))
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logger.info(
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"incoming request method=%s path=%s query=%s remote=%s bytes=%s",
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request.method,
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request_path,
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request.query_string.decode("utf-8", "ignore"),
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request.remote_addr,
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request_size,
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)
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if not TARGET_URL:
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logger.error("TARGET_URL is not set; cannot proxy request")
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return Response("TARGET_URL is not set", status=500)
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try:
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url = f"{TARGET_URL.rstrip('/')}/{path}".rstrip("/")
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start_time = time.time()
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headers = {k: v for k, v in request.headers if k.lower() != "host"}
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headers["X-Forwarded-By"] = "mtls-bridge"
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logger.debug("forwarding request to upstream url=%s headers=%s", url, headers)
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resp = requests.request(
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method=request.method,
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url=url,
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headers=headers,
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data=request.get_data(cache=True),
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cookies=request.cookies,
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cert=(CLIENT_CERT, CLIENT_KEY),
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verify=CA_CERT,
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timeout=TIMEOUT,
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)
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elapsed_ms = int((time.time() - start_time) * 1000)
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logger.info(
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"upstream response status=%s url=%s elapsed_ms=%s response_bytes=%s",
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resp.status_code,
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url,
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elapsed_ms,
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len(resp.content),
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)
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excluded_headers = ["content-encoding", "content-length", "transfer-encoding", "connection"]
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response_headers = [
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(k, v)
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for k, v in resp.raw.headers.items()
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if k.lower() not in excluded_headers
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]
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return Response(resp.content, resp.status_code, response_headers)
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except Exception as e:
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logger.exception("proxy request failed")
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return Response(str(e), status=500)
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if __name__ == "__main__":
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app.run(host="0.0.0.0", port=8080)
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