Source code for actions.install_extension

#!/usr/bin/env python
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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 extension. If 'force' is set, then the dependency checks are overridden. This action is NOT dual-supervisor compatible. Attributes: url: path to source extension file force: ignore validation errors (default: false) always_execute: perform copy even if file exists Special_attributes: NODE: API object - see documentation for details Example: :: - action: install_extension always_execute: true attributes: url: files/telemetry-1.0-1.rpm name: "Install Telemetry" ''' node = attributes.get('NODE') url = attributes.get('url') if not url: raise Exception('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: raise Exception('Unable to retrieve extension from URL (%s)' % exc) line = name if force: line = line + ' force' lines = [] try: lines = [x.strip() for x in open(BOOT_EXTENSIONS).readlines() if x.strip()] except IOError: # file Missing pass open(BOOT_EXTENSIONS, 'w').write('\n'.join(lines + [line]))