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import os
import urllib.parse
import requests
from flask import Flask, Response, request, send_file, abort
app = Flask(__name__)
# URL template from env
URL_TEMPLATE = os.environ.get("FLUX")
if not URL_TEMPLATE:
raise RuntimeError("Missing FLUX env variable")
DEFAULT_PATH = os.path.join(os.getcwd(), "default.png")
@app.route("/", methods=["GET"])
def generate_or_default():
# No query => serve default.png
if not request.query_string:
if os.path.exists(DEFAULT_PATH):
return send_file(DEFAULT_PATH, mimetype="image/png")
else:
abort(404, description="default.png not found in container")
# Otherwise, generate
prompt = request.args.get(
"prompt",
"a glowing board with the word 'KindSynapse'"
)
width = request.args.get("width", "1024")
height = request.args.get("height", "1024")
seed = request.args.get("seed", "0")
# URL-encode and build
encoded = urllib.parse.quote(prompt, safe="")
url = (
URL_TEMPLATE
.replace("[prompt]", encoded)
.replace("[w]", width)
.replace("[h]", height)
.replace("[seed]", seed)
)
resp = requests.get(url, stream=True)
if resp.status_code != 200:
return Response(
f"Upstream error: {resp.status_code}",
status=502
)
return Response(resp.content, content_type=resp.headers.get("Content-Type"))
if __name__ == "__main__":
app.run(host="0.0.0.0", port=7860) |