#!/usr/bin/env python
#
# Copyright (c) 2015, Arista Networks, Inc.
# All rights reserved.
#
# 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
# documentation and/or other materials provided with the distribution.
# - Neither the name of Arista Networks nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "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
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
# BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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# OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# pylint: disable=C0209
import ast
import io
import os
from six import raise_from
EXTENSIONS_DIR = "/mnt/flash/.extensions"
BOOT_EXTENSIONS = "/mnt/flash/boot-extensions"
[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 RuntimeError("Missing attribute('url')")
force = ast.literal_eval(str(attributes.get("force")))
if not os.path.exists(EXTENSIONS_DIR):
os.makedirs(EXTENSIONS_DIR)
name = url.split("/")[-1]
try:
node.retrieve_url(url, "{}/{}".format(EXTENSIONS_DIR, name))
except Exception as exc:
raise_from(RuntimeError("Unable to retrieve extension from URL"), exc)
line = name
if force:
line = line + " force"
lines = []
if os.access(BOOT_EXTENSIONS, os.R_OK):
with io.open(BOOT_EXTENSIONS, encoding="utf8") as boot_ext_fd:
lines = [x.strip() for x in boot_ext_fd.readlines() if x.strip()]
with io.open(BOOT_EXTENSIONS, "w", encoding="utf8") as boot_ext_fd:
boot_ext_fd.write("\n".join(lines + [line]))