Synnefo » snf-image-creator

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from os.path import basename

from kamaki.config import Config

from kamaki.clients import ClientError

from kamaki.clients.image import ImageClient

from kamaki.clients.pithos import PithosClient

from progress.bar import Bar

from image_creator.util import FatalError, output, success

CONTAINER = "images"

def progress(message):

    MSG_LENGTH = 30

    def progress_gen(n):

        msg = "%s:" % message

        progressbar = Bar(msg.ljust(MSG_LENGTH))

        progressbar.max = n

        for _ in range(n):

            yield

            progressbar.next()

        output("\r%s...\033[K" % message, False)

        success("done")

        yield

    return progress_gen

class Kamaki:

    def __init__(self, account, token):

        self.account = account

        self.token = token

        config = Config()

        pithos_url = config.get('storage', 'url')

        self.container = CONTAINER

        self.pithos_client = PithosClient(pithos_url, token, self.account,

                                                                self.container)

        image_url = config.get('image', 'url')

        self.image_client = ImageClient(image_url, token)

        self.uploaded_object = None

    def upload(self, file_obj, size=None, remote_path=None, hp=None, up=None):

        if remote_path is None:

            remote_path = basename(filename)

        try:

            self.pithos_client.create_container(self.container)

        except ClientError as e:

            if e.status != 202:  # Ignore container already exists errors

                raise FatalError("Pithos client: %d %s" % \

                                                    (e.status, e.message))

        try:

            hash_cb = progress(hp) if hp is not None else None

            upload_cb = progress(up) if up is not None else None

            self.pithos_client.create_object(remote_path, file_obj, size,

                                                            hash_cb, upload_cb)

            return "pithos://%s/%s/%s" % \

                            (self.account, self.container, remote_path)

        except ClientError as e:

            raise FatalError("Pithos client: %d %s" % (e.status, e.message))

    def register(self, name, location, metadata):

        params = {'is_public':'true', 'disk_format':'diskdump'}

        try:

            self.image_client.register(name, location, params, metadata)

        except ClientError as e:

            raise FatalError("Image client: %d %s" % (e.status, e.message))

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