49 lines
1.5 KiB
Python
49 lines
1.5 KiB
Python
import os
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import urllib2
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from charmhelpers.fetch import (
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BaseFetchHandler,
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UnhandledSource
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)
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from charmhelpers.payload.archive import (
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get_archive_handler,
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extract,
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)
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from charmhelpers.core.host import mkdir
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class ArchiveUrlFetchHandler(BaseFetchHandler):
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"""Handler for archives via generic URLs"""
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def can_handle(self, source):
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url_parts = self.parse_url(source)
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if url_parts.scheme not in ('http', 'https', 'ftp', 'file'):
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return "Wrong source type"
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if get_archive_handler(self.base_url(source)):
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return True
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return False
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def download(self, source, dest):
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# propogate all exceptions
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# URLError, OSError, etc
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response = urllib2.urlopen(source)
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try:
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with open(dest, 'w') as dest_file:
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dest_file.write(response.read())
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except Exception as e:
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if os.path.isfile(dest):
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os.unlink(dest)
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raise e
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def install(self, source):
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url_parts = self.parse_url(source)
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dest_dir = os.path.join(os.environ.get('CHARM_DIR'), 'fetched')
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if not os.path.exists(dest_dir):
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mkdir(dest_dir, perms=0755)
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dld_file = os.path.join(dest_dir, os.path.basename(url_parts.path))
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try:
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self.download(source, dld_file)
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except urllib2.URLError as e:
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raise UnhandledSource(e.reason)
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except OSError as e:
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raise UnhandledSource(e.strerror)
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return extract(dld_file)
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