From 2ec25e5ddaa41c32ab96f93dd2ad6a40646290b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ale=C5=A1=20Smodi=C5=A1?= <aless@guru.si>
Date: Wed, 19 Aug 2015 19:06:46 +0200
Subject: Adapted existing database entities to changes in the model. Excluded
 database connection handling into __init__.py of the db package.

---
 db/__init__.py | 60 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 db/__init__.py

(limited to 'db/__init__.py')

diff --git a/db/__init__.py b/db/__init__.py
new file mode 100644
index 0000000..e02a1fe
--- /dev/null
+++ b/db/__init__.py
@@ -0,0 +1,60 @@
+# coding=utf-8
+
+import os
+
+import psycopg2
+
+__all__ = ['get_connection', 'return_connection', 'setup', 'models']
+
+_host = None  # the database hostname/IP
+_port = None  # the database port number
+_database = None  # the name of the database
+_username = None  # the username to access the database
+_password = None  # the password to access the database
+
+
+# database parameters setup
+
+def _get_port():
+    try:
+        return int(os.environ.get('CODEQ_DB_PORT'))
+    except:
+        return 5432
+
+
+def setup(
+        host=os.environ.get('CODEQ_DB_HOST') or 'localhost',
+        port=_get_port(),
+        database=os.environ.get('CODEQ_DB_DATABASE') or 'codeq',
+        username=os.environ.get('CODEQ_DB_USER') or 'codeq',
+        password=os.environ.get('CODEQ_DB_PASS') or 'c0d3q'
+):
+    """Sets the database location and authentication parameters."""
+    global _host, _port, _database, _username, _password
+    _host = host
+    _port = port
+    _database = database
+    _username = username
+    _password = password
+
+# connection pooling
+
+_connection_pool = []
+
+
+def get_connection():
+    """Retrieves a database connection from the connection pool."""
+    if _host is None:
+        setup()  # lazy init
+    if len(_connection_pool) > 0:
+        return _connection_pool.pop()
+    return psycopg2.connect(host=_host, port=_port, database=_database, user=_username, password=_password)
+
+
+def return_connection(connection):
+    """Returns the given database connection to the pool."""
+    _connection_pool.append(connection)
+
+
+if __name__ == '__main__':
+    setup()
-- 
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