#!/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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# IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
# pylint: disable=C0209
import io
import os
from six import raise_from
TEMP_CONFIG = "/tmp/tmp-add-config"
[docs]
def main(attributes):
"""Appends config section to startup-config.
This action is dual-supervisor compatible.
Attributes:
url: path to source config/template
substitution_mode: loose|strict (default: loose)
variables: list of value substitutions
Special_attributes:
NODE: API object - see documentation for details
Example:
::
-
action: add_config
attributes:
url: files/templates/ma1.template
variables:
ipaddress: allocate('mgmt_subnet')
name: "configure ma1"
onstart: "Starting to configure ma1"
onsuccess: "SUCCESS: ma1 configure"
onfailure: "FAIL: IM provisioning@example.com for help"
"""
node = attributes.get("NODE")
url = attributes.get("url")
if not url:
raise RuntimeError("Missing attribute('url')")
substitution_mode = attributes.get("substitution_mode", "loose")
if substitution_mode not in ["loose", "strict"]:
raise RuntimeError("Invalid option specified for substitution_mode attribute")
try:
node.retrieve_url(url, TEMP_CONFIG)
except Exception as exc:
raise_from(RuntimeError("Unable to retrieve config from URL"), exc)
with io.open(TEMP_CONFIG, encoding="utf8") as fd:
contents = fd.read()
variables = attributes.get("variables")
if not variables:
variables = {}
if not isinstance(variables, dict):
node.log_msg("Variables: {}".format(variables))
raise RuntimeError("Unable to perform variable substitution - invalid variables")
contents = node.substitute(contents, variables, substitution_mode == "strict")
node.append_startup_config_lines(contents.split("\n"))
# Only remove this in case everything else succeeded
# for debugging purposes
os.remove(TEMP_CONFIG)