ironpython access for the raven_db_http_api

raven_db_http_api.py

import clr

from System.Net import WebRequest
from System.Text import ASCIIEncoding
from System.IO import StreamReader

def http(method, url, data_string=None, header={}):
	request = WebRequest.Create(url)
	request.UseDefaultCredentials = True
	request.Method = method

	if data_string:
		request.ContentType = "application/x-www-form-urlencoded"
		encoding = ASCIIEncoding()
		data = encoding.GetBytes(data_string)
		request.ContentLength = data.Length
		stream = request.GetRequestStream()
		stream.Write(data, 0, data.Length)
		stream.Close()

	for k,v in header.items():
		request.Headers.Add(k,v)

	response = request.GetResponse()
	print response.StatusDescription
	dataStream = response.GetResponseStream()
	reader = StreamReader(dataStream)

	responseFromServer = reader.ReadToEnd()
	print responseFromServer

	reader.Close()
	dataStream.Close()
	response.Close()
	return responseFromServer

def save_entity(url, name, data_string):
	return http("post", url, data_string, {"Raven-Entity-Name": name})

def record(name, data):
	""" REVIEW: don't know if this will collide with different version or the scope"""
	record_type = namedtuple(name, data.Keys)
	record_instance = record_type(**data)
	return record_instance


### SAMPLE USAGE ###

entity_name = "Person"

# save dictionary as ... 
import json
person = {"name": "Rainer", "gender":"male"}
save_entity("http://localhost:8080/docs", entity_name, json.dumps(person))

# load some random person as dictionary
url = "http://localhost:8080/docs/%(entity)s/42" % {"entity":entity_name }
json_string = http("get", url)
data = json.loads(json_string)
# access some fields
print data['gender']
data['name'] = "somebody"


# create a namedtuple / record
# for some named tuple magic and how it works have a look at http://www.artima.com/weblogs/viewpost.jsp?thread=236637
raven_entity = record( entity_name, data)
#access fields
print raven_entity.name
print raven_entity
# READONLY: will fail
raven_entity.name = "Nobody"
# instead, create a new tuple
nobody = raven_entity._replace(name = "Nobody")