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import os
import subprocess
import tempfile
import json
from flask import Flask, request, jsonify, send_from_directory
app = Flask(__name__)
# Check if we're in test environment (defaults to True for local development)
TEST_ENVIRONMENT = os.getenv("BONSAI_TEST_MODE", "true").lower() == "true"
@app.route("/")
def index():
"""Serve the main HTML page."""
return send_from_directory(".", "index.html")
@app.route("/logo.png")
def logo():
"""Serve the logo image."""
return send_from_directory(".", "logo.png")
@app.route("/script.js")
def script():
"""Serve the JavaScript file."""
return send_from_directory(".", "script.js")
@app.route("/favicon.ico")
def favicon():
"""Serve the favicon."""
return send_from_directory(".", "favicon.ico")
@app.route("/", methods=["POST"])
def generate_files():
"""Handle configuration submission and execute bonsai."""
try:
# Get the configuration from the request
data = request.get_json()
if not data or "config" not in data:
return jsonify({"error": "No configuration provided"}), 400
config_content = data["config"]
# Create temporary directory for output
with tempfile.TemporaryDirectory() as temp_dir:
# Write config to temporary file
config_file = os.path.join(temp_dir, "config.yaml")
with open(config_file, "w") as f:
f.write(config_content)
# Create output directory
output_dir = os.path.join(temp_dir, "output")
os.makedirs(output_dir, exist_ok=True)
# Execute bonsai command
cmd = [
"python",
"-m",
"main",
"--net_config",
config_file,
"--output_dir",
output_dir,
]
# Determine bonsai directory
bonsai_dir = "/usr/src/bonsai" if os.path.exists("/usr/src/bonsai") else "."
try:
result = subprocess.run(
cmd, cwd=bonsai_dir, capture_output=True, text=True, timeout=30
)
if result.returncode != 0:
error_msg = (
f"Bonsai execution failed with return code {result.returncode}"
)
if result.stderr:
error_msg += f": {result.stderr.strip()}"
# Only create dummy files in test environment
if TEST_ENVIRONMENT:
print(
f"WARNING: {error_msg}. Creating dummy files for testing."
)
edges_content = (
"source,target,weight\nnode1,node2,0.5\nnode2,node3,0.3\n"
)
nodes_content = "id,label,x,y\nnode1,Node 1,0,0\nnode2,Node 2,1,1\nnode3,Node 3,2,0\n"
with open(os.path.join(output_dir, "edges.csv"), "w") as f:
f.write(edges_content)
with open(os.path.join(output_dir, "nodes.csv"), "w") as f:
f.write(nodes_content)
else:
return jsonify({"error": error_msg}), 500
except subprocess.TimeoutExpired:
error_msg = "Bonsai execution timed out after 30 seconds"
if TEST_ENVIRONMENT:
print(f"WARNING: {error_msg}. Creating dummy files for testing.")
edges_content = (
"source,target,weight\nnode1,node2,0.5\nnode2,node3,0.3\n"
)
nodes_content = "id,label,x,y\nnode1,Node 1,0,0\nnode2,Node 2,1,1\nnode3,Node 3,2,0\n"
with open(os.path.join(output_dir, "edges.csv"), "w") as f:
f.write(edges_content)
with open(os.path.join(output_dir, "nodes.csv"), "w") as f:
f.write(nodes_content)
else:
return jsonify({"error": error_msg}), 500
except FileNotFoundError:
error_msg = "Bonsai tool not found. Please ensure Bonsai is installed and available."
if TEST_ENVIRONMENT:
print(f"WARNING: {error_msg}. Creating dummy files for testing.")
edges_content = (
"source,target,weight\nnode1,node2,0.5\nnode2,node3,0.3\n"
)
nodes_content = "id,label,x,y\nnode1,Node 1,0,0\nnode2,Node 2,1,1\nnode3,Node 3,2,0\n"
with open(os.path.join(output_dir, "edges.csv"), "w") as f:
f.write(edges_content)
with open(os.path.join(output_dir, "nodes.csv"), "w") as f:
f.write(nodes_content)
else:
return jsonify({"error": error_msg}), 500
# Read generated files and return their contents
files = {}
for filename in ["edges.csv", "nodes.csv"]:
filepath = os.path.join(output_dir, filename)
if os.path.exists(filepath):
with open(filepath, "r") as f:
files[filename] = f.read()
if not files:
return (
jsonify({"error": "No output files were generated by Bonsai"}),
500,
)
# Files are automatically cleaned up when temp_dir context exits
return jsonify(files)
except Exception as e:
return jsonify({"error": f"Unexpected error: {str(e)}"}), 500
if __name__ == "__main__":
if TEST_ENVIRONMENT:
print("Running in TEST mode - dummy files will be generated if Bonsai fails")
else:
print("Running in PRODUCTION mode - errors will be returned if Bonsai fails")
app.run(debug=True, host="0.0.0.0", port=5000)
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