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Create app.py
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app.py
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from flask import Flask, request, jsonify, render_template_string
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import psycopg2
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import os
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app = Flask(__name__)
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DB_PARAMS = {
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'dbname': os.getenv('POSTGRES_DB', 'mydatabase'),
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'user': os.getenv('POSTGRES_USER', 'myuser'),
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'password': os.getenv('POSTGRES_PASSWORD', 'mypassword'),
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'host': 'localhost',
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'port': 5432
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}
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def get_conn():
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return psycopg2.connect(**DB_PARAMS)
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@app.route("/")
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def index():
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html = """
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<html>
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<head>
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<title>Database Status</title>
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<style>
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body { background-color: #121212; color: #eeeeee; font-family: sans-serif; padding: 2em; }
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textarea, input, button { background-color: #222; color: #eee; border: 1px solid #555; padding: 5px; }
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button { cursor: pointer; }
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</style>
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</head>
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<body>
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<h1>Database Status</h1>
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<div id="status">Loading...</div>
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<h2>Run Query</h2>
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<textarea id="query" rows="4" cols="60">SELECT * FROM pg_tables LIMIT 5;</textarea><br>
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<button onclick="runQuery()">Execute</button>
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<h3>Results</h3>
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<pre id="results"></pre>
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<script>
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async function loadStatus() {
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const res = await fetch('/api/health');
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const data = await res.json();
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document.getElementById('status').textContent =
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'Health: ' + data.status + ' | ' +
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'Connected: ' + data.connected;
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}
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async function runQuery() {
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const sql = document.getElementById('query').value;
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const res = await fetch('/api/query', {
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method: 'POST',
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headers: { 'Content-Type': 'application/json' },
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body: JSON.stringify({ query: sql })
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});
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const data = await res.json();
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document.getElementById('results').textContent =
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JSON.stringify(data, null, 2);
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}
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loadStatus();
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</script>
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</body>
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</html>
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"""
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return render_template_string(html)
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@app.route("/api/health")
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def health():
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try:
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conn = get_conn()
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conn.close()
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return jsonify({'status': 'ok', 'connected': True})
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except Exception as e:
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return jsonify({'status': 'error', 'connected': False, 'detail': str(e)}), 500
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@app.route("/api/query", methods=["POST"])
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def query():
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data = request.get_json()
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sql = data.get("query", "")
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try:
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conn = get_conn()
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cur = conn.cursor()
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cur.execute(sql)
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if cur.description:
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rows = cur.fetchall()
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columns = [desc[0] for desc in cur.description]
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result = [dict(zip(columns, row)) for row in rows]
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else:
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conn.commit()
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result = {"rows_affected": cur.rowcount}
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cur.close()
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conn.close()
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return jsonify(result)
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except Exception as e:
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return jsonify({"error": str(e)}), 400
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if __name__ == "__main__":
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app.run(host="0.0.0.0", port=7860)
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