66 lines
2.2 KiB
Python
66 lines
2.2 KiB
Python
import os
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import psycopg2
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from psycopg2.extras import RealDictCursor
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from urllib.parse import urlparse
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from flask import g
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class DataBase():
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def __init__(self, app):
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db_url = urlparse(os.environ['DATABASE_URL'])
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# if db_url is null then throw error
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if not db_url:
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raise Exception("No DATABASE_URL environment variable set")
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def getDB(self):
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db = getattr(g, 'database', None)
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if db is None:
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db_url = urlparse(os.environ['DATABASE_URL'])
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g.database = psycopg2.connect(
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database=db_url.path[1:],
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user=db_url.username,
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password=db_url.password,
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host=db_url.hostname,
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port=db_url.port
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)
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db = g.database
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return db
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def close_connection(exception):
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db = getattr(g, 'database', None)
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if db is not None:
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db.close()
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def execute(self, query, args=(), one=False, commit=False):
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conn = self.getDB()
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cur = conn.cursor(cursor_factory=RealDictCursor)
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cur.execute(query, args)
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rv = None
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if cur.description is not None:
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rv = cur.fetchall()
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if commit:
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try:
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conn.commit()
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except:
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conn.rollback()
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cur.close()
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return (rv[0] if rv else None) if one else rv
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def get_http_functions(self):
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http_functions = self.execute(
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'SELECT id, NAME, script_content, invoked_count FROM http_functions', [])
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return http_functions
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def get_http_function(self, name):
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http_function = self.execute(
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'SELECT id, NAME, script_content, invoked_count FROM http_functions WHERE NAME=%s', [name], one=True)
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return http_function
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def create_new_http_function(self, name, script_content):
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self.execute(
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'INSERT INTO http_functions (NAME, script_content) VALUES (%s, %s)', [name, script_content], commit=True)
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def edit_http_function(self, name, script_content):
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self.execute(
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'UPDATE http_functions SET script_content=%s WHERE NAME=%s', [script_content, name], commit=True)
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