Synnefo » ./kamaki

# Copyright 2011-2012 GRNET S.A. All rights reserved.

#

# Redistribution and use in source and binary forms, with or

# without modification, are permitted provided that the following

# conditions are met:

#

#   1. Redistributions of source code must retain the above

#      copyright notice, this list of conditions and the following

#      disclaimer.

#

#   2. Redistributions in binary form must reproduce the above

#      copyright notice, this list of conditions and the following

#      disclaimer in the documentation and/or other materials

#      provided with the distribution.

#

# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS

# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED

# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR

# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF

# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED

# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN

# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

# POSSIBILITY OF SUCH DAMAGE.

#

# The views and conclusions contained in the software and

# documentation are those of the authors and should not be

# interpreted as representing official policies, either expressed

# or implied, of GRNET S.A.

import json

import logging

import requests

from requests.auth import AuthBase

sendlog = logging.getLogger('clients.send')

recvlog = logging.getLogger('clients.recv')

# Add a convenience json property to the responses

def _json(self):

    try:

        return json.loads(self.content) if self.content else {}

    except ValueError:

        raise ClientError("Invalid JSON reply", self.status_code)

requests.Response.json = property(_json)

# Add a convenience status property to the responses

def _status(self):

    return requests.status_codes._codes[self.status_code][0].upper()

requests.Response.status = property(_status)

class ClientError(Exception):

    def __init__(self, message, status=0, details=''):

        self.message = message

        self.status = status

        self.details = details

class Client(object):

    def __init__(self, base_url, token):

        self.base_url = base_url

        self.token = token

    def raise_for_status(self, r):        

        message = "%d %s" % (r.status_code, r.status)

        details = r.text

        raise ClientError(message, r.status_code, details)

    def request(self, method, path, **kwargs):

        raw = kwargs.pop('raw', False)

        success = kwargs.pop('success', 200)

        data = kwargs.pop('data', None)

        headers = kwargs.pop('headers', {})

        headers.setdefault('X-Auth-Token', self.token)

        if 'json' in kwargs:

            data = json.dumps(kwargs.pop('json'))

            headers.setdefault('Content-Type', 'application/json')

        if data:

            headers.setdefault('Content-Length', str(len(data)))

        url = self.base_url + path

        kwargs.setdefault('verify', False)  # Disable certificate verification

        r = requests.request(method, url, headers=headers, data=data, **kwargs)

        req = r.request

        sendlog.info('%s %s', req.method, req.url)

        for key, val in req.headers.items():

            sendlog.info('%s: %s', key, val)

        sendlog.info('')

        if req.data:

            sendlog.info('%s', req.data)

        recvlog.info('%d %s', r.status_code, r.status)

        for key, val in r.headers.items():

            recvlog.info('%s: %s', key, val)

        recvlog.info('')

        if not raw and r.text:

            recvlog.debug(r.text)

        if success is not None:

            # Success can either be an in or a collection

            success = (success,) if isinstance(success, int) else success

            if r.status_code not in success:

                self.raise_for_status(r)

        return r

    def delete(self, path, **kwargs):

        return self.request('delete', path, **kwargs)

    def get(self, path, **kwargs):

        return self.request('get', path, **kwargs)

    def head(self, path, **kwargs):

        return self.request('head', path, **kwargs)

    def post(self, path, **kwargs):

        return self.request('post', path, **kwargs)

    def put(self, path, **kwargs):

        return self.request('put', path, **kwargs)

from .compute import ComputeClient as compute

from .image import ImageClient as image

from .storage import StorageClient as storage

from .cyclades import CycladesClient as cyclades

from .pithos import PithosClient as pithos

from .astakos import AstakosClient as astakos