NodesPollNow

Complexity

Total Complexity

14

Size/Duplication

Total Lines	86
Duplicated Lines	0 %

Importance

Changes	3
Bugs	1	Features	0

2 Methods

Rating	Name	Duplication	Size	Complexity
B	_pollnow_nodes()	0	32	5
D	run()	0	52	9

# Licensed to the StackStorm, Inc ('StackStorm') under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

import time

from lib.actions import OrionBaseAction
from lib.utils import send_user_error


class NodesPollNow(OrionBaseAction):
    def run(self, nodes, platform, count, pause):
        """
        Invoke a PollNow verb against a Orion Node.

        Args:
        - node: The caption in Orion of the node to poll.
        - platform: The orion platform to act on.
        - count: Number of polls to complete.
        - pause: Number of seconds to wait between each cycle.

        Returns
            True: As PollNow does not return any data.

        Raises:
            IndexError: When a nodes is not found.
        """

        self.results = {'down': [],
                        'up': [],
                        'extra_count': False}

        self.connect(platform)
        self.orion_nodes = []

        for node in nodes:
            orion_node = self.get_node(node)

            if orion_node.npm:
                self.orion_nodes.append(orion_node.npm_id)
            else:
                error_msg = "Node not found"
                send_user_error(error_msg)
                raise ValueError(error_msg)

        for c in range(count):
            self._pollnow_nodes(count, pause)

            if len(self.orion_nodes) == 0:
                self.results['last_count'] = c
                break
        else:
            self.results['last_count'] = count

        if len(self.orion_nodes) > 0:
            self.results['extra_pass'] = True
            for c in range(count):
                self._pollnow_nodes(count, pause)
            else:
                self.results['left'] = self.orion_nodes

        # These Invoke's return None, so we just return True
        return self.results

    def _pollnow_nodes(self, count, pause):
        """
        Carry out a poll on any remaining orion nodes and remove those
        that are up or down.

        Args:
        - count: Number of polls to complete.
        - pause: Number of seconds to wait between each cycle.

        Returns:
        - None.

        Raises:
        - None.
        """
        for npm_id in self.orion_nodes:
            self.invoke("Orion.Nods",
                        "PollNow",
                        npm_id)

            swql = "SELECT Status FROM Orion.Nodes WHERE NodeID=@NodeID"
            kargs = {'NodeID': npm_id}
            orion_data = self.query(swql, **kargs)

            if orion_data['results'][0]['Status'] == 1:
                self.results['up'].append(npm_id)
                self.orion_nodes.remove(npm_id)
            elif orion_data['results'][0]['Status'] == 2:
                self.orion_nodes.remove(npm_id)
                self.results['down'].append(npm_id)
        else:
                time.sleep(pause)