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package.py

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package.py
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17/34
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package.py
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Source

osmclient/v1/package.py

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# Copyright 2017 Sandvine




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#




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# All Rights Reserved.




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#




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#    Licensed under the Apache License, Version 2.0 (the "License"); you may




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#    not use this file except in compliance with the License. You may obtain




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#    a copy of the License at




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#




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#         http://www.apache.org/licenses/LICENSE-2.0




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#




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#    Unless required by applicable law or agreed to in writing, software




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#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT




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#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the




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#    License for the specific language governing permissions and limitations




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#    under the License.




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"""




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OSM package API handling




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"""




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from osmclient.common.exceptions import ClientException




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from osmclient.common.exceptions import NotFound




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from osmclient.common import utils




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class Package(object):




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    def __init__(self, http=None, upload_http=None, client=None):




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        self._client = client




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        self._http = http




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        self._upload_http = upload_http




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    def _wait_for_package(self, pkg_type):




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        if "vnfd" in pkg_type["type"]:




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            get_method = self._client.vnfd.get




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        elif "nsd" in pkg_type["type"]:




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            get_method = self._client.nsd.get




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        else:




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            raise ClientException("no valid package type found")




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        # helper method to check if pkg exists




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        def check_exists(func):




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            try:




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                func()




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            except NotFound:




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                return False




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            return True




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        return utils.wait_for_value(




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            lambda: check_exists(lambda: get_method(pkg_type["name"]))




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        )




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    def get_key_val_from_pkg(self, descriptor_file):




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        return utils.get_key_val_from_pkg(descriptor_file)




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    def wait_for_upload(self, filename):




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        """wait(block) for an upload to succeed.




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        The filename passed is assumed to be a descriptor tarball.




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        """




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        pkg_type = utils.get_key_val_from_pkg(filename)




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        if pkg_type is None:




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            raise ClientException("Cannot determine package type")




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        if not self._wait_for_package(pkg_type):




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            raise ClientException("package {} failed to upload".format(filename))




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    def upload(self, filename):




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        resp = self._upload_http.post_cmd(formfile=("package", filename))




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        if not resp or "transaction_id" not in resp:




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            raise ClientException("failed to upload package")