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import os |
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from time import mktime |
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from dateutil.parser import parse |
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from binstar_client.errors import DestionationPathExists |
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class Downloader(object): |
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""" |
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Download notebook from your Anaconda repository. |
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""" |
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def __init__(self, aserver_api, username, notebook): |
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self.aserver_api = aserver_api |
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self.username = username |
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self.notebook = notebook |
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def __call__(self, output='.', force=False): |
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self.output = output |
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self.ensure_output() |
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return self.download_files(force) |
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def download_files(self, force=False): |
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output = [] |
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for f in self.list_files(): |
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if self.can_download(f, force): |
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self.download(f) |
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output.append(f['basename']) |
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else: |
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raise DestionationPathExists(f['basename']) |
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return output |
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def download(self, dist): |
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""" |
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Download file into location |
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""" |
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filename = dist['basename'] |
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requests_handle = self.aserver_api.download( |
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self.username, self.notebook, dist['version'], filename |
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) |
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if not os.path.exists(os.path.dirname(filename)): |
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try: |
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os.makedirs(os.path.dirname(filename)) |
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except OSError: |
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pass |
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with open(os.path.join(self.output, filename), 'wb') as fdout: |
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for chunk in requests_handle.iter_content(4096): |
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fdout.write(chunk) |
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def can_download(self, dist, force=False): |
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""" |
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Can download if location/file does not exist or if force=True |
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:param dist: |
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:param force: |
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:return: True/False |
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""" |
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return not os.path.exists(os.path.join(self.output, dist['basename'])) or force |
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def ensure_output(self): |
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""" |
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Ensure output's directory exists |
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""" |
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if not os.path.exists(self.output): |
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os.makedirs(self.output) |
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def list_files(self): |
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""" |
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List available files in a project (aka notebook) |
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:return: list |
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""" |
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output = [] |
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tmp = {} |
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files = self.aserver_api.package(self.username, self.notebook)['files'] |
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for f in files: |
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if f['basename'] in tmp: |
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tmp[f['basename']].append(f) |
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else: |
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tmp[f['basename']] = [f] |
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for basename, versions in tmp.items(): |
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try: |
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output.append(max(versions, key=lambda x: int(x['version']))) |
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except ValueError: |
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output.append( |
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max(versions, key=lambda x: mktime(parse(x['upload_time']).timetuple())) |
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) |
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except: |
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output.append(versions[-1]) |
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return output |
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Anaconda-Platform /
anaconda-client
