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#!/usr/bin/python3
import os
import psycopg2
import psycopg2.pool
import psycopg2.extras
from flask import Flask, g, render_template, send_from_directory
from werkzeug.contrib.cache import SimpleCache
app = Flask(__name__)
cache = SimpleCache()
db_config = {
"host": os.environ.get("POSTGRESQL_DEST_HOST") or "localhost",
"port": os.environ.get("POSTGRESQL_DEST_PORT") or 5432,
"user": os.environ.get("POSTGRESQL_DEST_USER") or "vainweb",
"password": os.environ.get("POSTGRESQL_DEST_PASSWORD") or "vainweb",
"dbname": os.environ.get("POSTGRESQL_DEST_DB") or "vainsocial-web"
}
def dbpool():
if not hasattr(g, "db_pool"):
g.db_pool = psycopg2.pool.ThreadedConnectionPool(
**db_config, minconn=1, maxconn=10)
return g.db_pool
@app.teardown_appcontext
def db_disconnect(err):
if hasattr(g, "db_pool"):
g.db_pool.closeall()
@app.context_processor
def sql_processor():
def sql_val(query):
val = cache.get(query)
if val is not None:
return val.get(0)
con = dbpool().getconn()
c = con.cursor(cursor_factory=psycopg2.extras.DictCursor)
c.execute(query)
val = c.fetchone()
cache.set(query, val, timeout=60*60) # seconds
c.close()
dbpool().putconn(con)
return val.get(0)
return dict(sql_val=sql_val)
@app.route("/")
def index():
return render_template("index.html")
@app.route("/assets/<path:path>")
def send_assets(path):
return send_from_directory("templates/assets", path)
if __name__ == "__main__":
app.run(debug=True)
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