setup notifier actions in aodh alarm

Aodh alarm NOTIFIER ==>

alarm_actions URL: http://<host>/<action>

NOTIFIER will resolve the URL and post the data to http server

setup a Http server ==>

such as: python -m SimpleHTTPServer 8000

link: https://docs.python.org/2/library/simplehttpserver.html

NOTE: this case only receive the posted data, but not handle it.

such as:

stack@stack:~$ cat reflect.py 
#!/usr/bin/env python
# Reflects the requests from HTTP methods GET, POST, PUT, and DELETE
# Written by Nathan Hamiel (2010)

from BaseHTTPServer import HTTPServer, BaseHTTPRequestHandler
from optparse import OptionParser

class RequestHandler(BaseHTTPRequestHandler):
    
    def do_GET(self):
        
        request_path = self.path
        
        print("
----- Request Start ----->
")
        print(request_path)
        print(self.headers)
        print("<----- Request End -----
")
        
        self.send_response(200)
        self.send_header("Set-Cookie", "foo=bar")
        
    def do_POST(self):
        
        request_path = self.path
        
        print("
----- Request Start ----->
")
        print(request_path)
        
        request_headers = self.headers
        content_length = request_headers.getheaders('content-length')
        length = int(content_length[0]) if content_length else 0
        
        print(request_headers)
        print(self.rfile.read(length))
        print("<----- Request End -----
")
        
        self.send_response(200)
    
    do_PUT = do_POST
    do_DELETE = do_GET
        
def main():
    port = 8000
    print('Listening on localhost:%s' % port)
    server = HTTPServer(('0.0.0.0', port), RequestHandler)
    server.serve_forever()

        
if __name__ == "__main__":
    parser = OptionParser()
    parser.usage = ("Creates an http-server that will echo out any GET or POST parameters
"
                    "Run:

"
                    "   reflect")
    (options, args) = parser.parse_args()
    
    main()