demo.py

import json

from klein import Klein

app = Klein()

_collections = {}

@app.route('/collections/')
def collections(request):
    request.setHeader('Content-Type', 'application/json')
    return json.dumps(_collections)

@app.route('/collections/<string:colname>/', methods=['PUT'])
def save_collection(request, colname):
    request.setHeader('Content-Type', 'application/json')
    body = json.loads(request.content.read())
    _collections[colname] = body
    return json.dumps({'success': True})

@app.route('/collections/<string:colname>/', methods=['DELETE'])
def delete_collection(request, colname):
    del _collections[colname]
    return json.dumps({'success': True})

@app.route('/collections/<string:colname>/', methods=['GET'])
def get_collection(request, colname):
    request.setHeader('Content-Type', 'application/json')
    return json.dumps(_collections.get(colname))

@app.route('/collections/<string:colname>/<string:itemname>', methods=['GET', 'PUT'])
def get_item(request, colname, itemname):
    return json.dumps(_collections.get(colname, {}).get(itemname))


if __name__ == '__main__':
    print app.url_map
    app.run('localhost', 8080)

map.txt

Map([<Rule '/collections/' -> collections>,
 <Rule '/collections/<colname>/<itemname>' (PUT, HEAD, GET) -> get_item>,
 <Rule '/collections/<colname>/<__rest__>' (PUT) -> save_collection_branch>,
 <Rule '/collections/<colname>/<__rest__>' (DELETE) -> delete_collection_branch>,
 <Rule '/collections/<colname>/<__rest__>' (HEAD, GET) -> get_collection_branch>,
 <Rule '/collections/<colname>/' (PUT) -> save_collection>,
 <Rule '/collections/<colname>/' (DELETE) -> delete_collection>,
 <Rule '/collections/<colname>/' (HEAD, GET) -> get_collection>,
 <Rule '/collections/<__rest__>' -> collections_branch>])

session.txt

(klein)thomasina dreid:~> curl -XPUT -d '{"bar": "baz"}' http://localhost:8080/collections/foo/
{"success": true}
thomasina dreid:~> curl -XPUT -d '{"bar": "baz"}' http://localhost:8080/collections/foo
{"foo": {"bar": "baz"}}
(klein)thomasina dreid:~> curl -XDELETE http://localhost:8080/collections/foo/bar
{"success": true}
(klein)thomasina dreid:~> curl http://localhost:8080/collections/
{}