#!/usr/bin/env python
#
# Copyright (c) 2014, Arista Networks, Inc.
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#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
# - Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
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# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
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# "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 ARISTA NETWORKS
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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#pylint: disable=W0703,E1103
EXTENSIONS_DIR = '/mnt/flash/.extensions'
BOOT_EXTENSIONS = '/mnt/flash/boot-extensions'
import ast
import os
[docs]def main(attributes):
'''Installs EOS extension.
Installs extension based on the value of the
'url' attribute. If 'force' is
set, then the dependency checks are overridden.
This action is NOT dual-supervisor compatible.
Args:
attributes: list of attributes; use attributes.get(<ATTRIBUTE_NAME>)
to read attribute values
Special attributes:
node: attributes.get('NODE')
API: see documentation
'''
node = attributes.get('NODE')
url = attributes.get('url')
if not url:
return 'Missing attribute(\'url\')'
force = ast.literal_eval(
str(attributes.get('force')))
try:
os.makedirs(EXTENSIONS_DIR)
except OSError:
# file exists
pass
name = url.split('/')[ -1 ]
try:
node.retrieve_url(url, '%s/%s' % (EXTENSIONS_DIR, name))
except Exception as exc:
return 'Unable to retrieve extension from URL (%s)' % exc
line = name
if force:
line = line + ' force'
open(BOOT_EXTENSIONS, 'a').write('\r\n%s' % line)