685 lines
24 KiB
Python
685 lines
24 KiB
Python
#!/usr/bin/env python3
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# vm.py - PVC CLI client function library, VM functions
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# Part of the Parallel Virtual Cluster (PVC) system
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#
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# Copyright (C) 2018-2019 Joshua M. Boniface <joshua@boniface.me>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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#
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###############################################################################
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import time
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import re
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import subprocess
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import requests
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from collections import deque
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import cli_lib.ansiprint as ansiprint
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import cli_lib.ceph as ceph
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def debug_output(config, request_uri, response):
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if config['debug']:
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from click import echo
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click.echo('API endpoint: POST {}'.format(request_uri), err=True)
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click.echo('Response code: {}'.format(response.status_code), err=True)
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click.echo('Response headers: {}'.format(response.headers), err=True)
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def get_request_uri(config, endpoint):
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"""
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Return the fully-formed URI for {endpoint}
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"""
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uri = '{}://{}{}{}'.format(
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config['api_scheme'],
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config['api_host'],
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config['api_prefix'],
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endpoint
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)
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return uri
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#
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# Primary functions
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#
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def vm_info(config, vm):
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"""
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Get information about VM
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API endpoint: GET /api/v1/vm/{vm}
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API arguments:
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API schema: {json_data_object}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}'.format(vm=vm))
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response = requests.get(
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request_uri
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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return True, response.json()
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else:
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return False, response.json()['message']
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def vm_list(config, limit, target_node, target_state):
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"""
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Get list information about VMs (limited by {limit}, {target_node}, or {target_state})
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API endpoint: GET /api/v1/vm
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API arguments: limit={limit}, node={target_node}, state={target_state}
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API schema: [{json_data_object},{json_data_object},etc.]
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"""
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params = dict()
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if limit:
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params['limit'] = limit
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if target_node:
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params['node'] = target_node
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if target_state:
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params['state'] = target_state
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request_uri = get_request_uri(config, '/vm')
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response = requests.get(
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request_uri,
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params=params
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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return True, response.json()
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else:
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return False, response.json()['message']
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def vm_define(config, xml, node, node_limit, node_selector, node_autostart):
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"""
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Define a new VM on the cluster
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API endpoint: POST /vm
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API arguments: xml={xml}, node={node}, limit={node_limit}, selector={node_selector}, autostart={node_autostart}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm')
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response = requests.post(
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request_uri,
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params={
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'xml': xml,
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'node': node,
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'limit': node_limit,
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'selector': node_selector,
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'autostart': node_autostart
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_modify(config, vm, xml, restart):
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"""
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Modify the configuration of VM
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API endpoint: POST /vm/{vm}
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API arguments: xml={xml}, restart={restart}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}'.format(vm=vm))
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response = requests.post(
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request_uri,
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params={
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'xml': xml,
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'restart': restart
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_metadata(config, vm, node_limit, node_selector, node_autostart):
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"""
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Modify PVC metadata of a VM
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API endpoint: GET /vm/{vm}/meta, POST /vm/{vm}/meta
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API arguments: limit={node_limit}, selector={node_selector}, autostart={node_autostart}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/meta'.format(vm=vm))
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# Get the existing metadata so we can perform a fully dynamic update
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response = requests.get(
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request_uri
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)
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debug_output(config, request_uri, response)
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metadata = response.json()
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# Update any params that we've sent
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if node_limit is not None:
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metadata['node_limit'] = node_limit
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else:
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# Collapse the existing list back down to a CSV
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metadata['node_limit'] = ','.join(metadata['node_limit'])
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if node_selector is not None:
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metadata['node_selector'] = node_selector
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if node_autostart is not None:
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metadata['node_autostart'] = node_autostart
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# Write the new metadata
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print(metadata['node_limit'])
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response = requests.post(
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request_uri,
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params={
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'limit': metadata['node_limit'],
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'selector': metadata['node_selector'],
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'autostart': metadata['node_autostart']
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_remove(config, vm, delete_disks=False):
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"""
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Remove a VM
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API endpoint: DELETE /vm/{vm}
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API arguments: delete_disks={delete_disks}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}'.format(vm=vm))
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response = requests.delete(
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request_uri,
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params={
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'delete_disks': delete_disks
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_state(config, vm, target_state):
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"""
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Modify the current state of VM
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API endpoint: POST /vm/{vm}/state
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API arguments: state={state}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/state'.format(vm=vm))
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response = requests.post(
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request_uri,
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params={
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'state': target_state,
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_node(config, vm, target_node, action, force=False):
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"""
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Modify the current node of VM via {action}
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API endpoint: POST /vm/{vm}/node
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API arguments: node={target_node}, action={action}, force={force}
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/node'.format(vm=vm))
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response = requests.post(
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request_uri,
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params={
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'node': target_node,
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'action': action,
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'force': force
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}
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def vm_locks(config, vm):
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"""
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Flush RBD locks of (stopped) VM
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API endpoint: POST /vm/{vm}/locks
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API arguments:
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API schema: {"message":"{data}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/locks'.format(vm=vm))
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response = requests.post(
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request_uri
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)
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debug_output(config, request_uri, response)
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if response.status_code == 200:
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retstatus = True
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else:
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retstatus = False
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return retstatus, response.json()['message']
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def view_console_log(config, vm, lines=100):
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"""
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Return console log lines from the API and display them in a pager
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API endpoint: GET /vm/{vm}/console
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API arguments: lines={lines}
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API schema: {"name":"{vmname}","data":"{console_log}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/console'.format(vm=vm))
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response = requests.get(
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request_uri,
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params={'lines': lines}
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)
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debug_output(config, request_uri, response)
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if response.status_code != 200:
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return False, response.json()['message']
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console_log = response.json()['data']
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# Shrink the log buffer to length lines
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shrunk_log = console_log.split('\n')[-lines:]
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loglines = '\n'.join(shrunk_log)
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# Show it in the pager (less)
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try:
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pager = subprocess.Popen(['less', '-R'], stdin=subprocess.PIPE)
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pager.communicate(input=loglines.encode('utf8'))
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except FileNotFoundError:
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ainformation = list()
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ainformation.append("Error: `less` pager not found, dumping log ({} lines) to stdout".format(lines))
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ainformation.append(loglines)
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return False, '\n'.join(ainformation)
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return True, ''
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def follow_console_log(config, vm, lines=10):
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"""
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Return and follow console log lines from the API
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API endpoint: GET /vm/{vm}/console
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API arguments: lines={lines}
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API schema: {"name":"{vmname}","data":"{console_log}"}
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"""
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request_uri = get_request_uri(config, '/vm/{vm}/console'.format(vm=vm))
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response = requests.get(
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request_uri,
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params={'lines': lines}
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)
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debug_output(config, request_uri, response)
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console_log = response.json()['data']
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# Shrink the log buffer to length lines
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shrunk_log = console_log.split('\n')[-lines:]
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loglines = '\n'.join(shrunk_log)
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# Print the initial data and begin following
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print(loglines, end='')
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while True:
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# Grab the next line set
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# Get the (initial) data from the API
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response = requests.get(
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'{}://{}{}{}'.format(
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config['api_scheme'],
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config['api_host'],
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config['api_prefix'],
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'/vm/{}/console'.format(vm)
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),
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params={'lines': lines}
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)
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debug_output(config, request_uri, response)
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new_console_log = response.json()['data']
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# Split the new and old log strings into constitutent lines
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old_console_loglines = console_log.split('\n')
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new_console_loglines = new_console_log.split('\n')
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# Set the console log to the new log value for the next iteration
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console_log = new_console_log
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# Remove the lines from the old log until we hit the first line of the new log; this
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# ensures that the old log is a string that we can remove from the new log entirely
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for index, line in enumerate(old_console_loglines, start=0):
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if line == new_console_loglines[0]:
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del old_console_loglines[0:index]
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break
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# Rejoin the log lines into strings
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old_console_log = '\n'.join(old_console_loglines)
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new_console_log = '\n'.join(new_console_loglines)
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# Remove the old lines from the new log
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diff_console_log = new_console_log.replace(old_console_log, "")
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# If there's a difference, print it out
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if diff_console_log:
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print(diff_console_log, end='')
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# Wait a second
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time.sleep(1)
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return True, ''
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#
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# Output display functions
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#
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def format_info(config, domain_information, long_output):
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# Format a nice output; do this line-by-line then concat the elements at the end
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ainformation = []
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ainformation.append('{}Virtual machine information:{}'.format(ansiprint.bold(), ansiprint.end()))
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ainformation.append('')
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# Basic information
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ainformation.append('{}UUID:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['uuid']))
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ainformation.append('{}Name:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['name']))
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ainformation.append('{}Description:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['description']))
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ainformation.append('{}Profile:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['profile']))
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ainformation.append('{}Memory (M):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['memory']))
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ainformation.append('{}vCPUs:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu']))
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ainformation.append('{}Topology (S/C/T):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu_topology']))
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if long_output == True:
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# Virtualization information
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ainformation.append('')
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ainformation.append('{}Emulator:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['emulator']))
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ainformation.append('{}Type:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['type']))
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ainformation.append('{}Arch:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['arch']))
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ainformation.append('{}Machine:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['machine']))
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ainformation.append('{}Features:{} {}'.format(ansiprint.purple(), ansiprint.end(), ' '.join(domain_information['features'])))
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# PVC cluster information
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ainformation.append('')
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dstate_colour = {
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'start': ansiprint.green(),
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'restart': ansiprint.yellow(),
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'shutdown': ansiprint.yellow(),
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'stop': ansiprint.red(),
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'disable': ansiprint.blue(),
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'fail': ansiprint.red(),
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'migrate': ansiprint.blue(),
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'unmigrate': ansiprint.blue()
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}
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ainformation.append('{}State:{} {}{}{}'.format(ansiprint.purple(), ansiprint.end(), dstate_colour[domain_information['state']], domain_information['state'], ansiprint.end()))
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ainformation.append('{}Current Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['node']))
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if not domain_information['last_node']:
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domain_information['last_node'] = "N/A"
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ainformation.append('{}Previous Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['last_node']))
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# Get a failure reason if applicable
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if domain_information['failed_reason']:
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ainformation.append('')
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ainformation.append('{}Failure reason:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['failed_reason']))
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if not domain_information['node_selector']:
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formatted_node_selector = "False"
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else:
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formatted_node_selector = domain_information['node_selector']
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if not domain_information['node_limit']:
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formatted_node_limit = "False"
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else:
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formatted_node_limit = ', '.join(domain_information['node_limit'])
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if not domain_information['node_autostart']:
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formatted_node_autostart = "False"
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else:
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formatted_node_autostart = domain_information['node_autostart']
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ainformation.append('{}Migration selector:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_selector))
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ainformation.append('{}Node limit:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_limit))
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ainformation.append('{}Autostart:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_autostart))
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# Network list
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net_list = []
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for net in domain_information['networks']:
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# Split out just the numerical (VNI) part of the brXXXX name
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net_vnis = re.findall(r'\d+', net['source'])
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if net_vnis:
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net_vni = net_vnis[0]
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else:
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net_vni = re.sub('br', '', net['source'])
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request_uri = get_request_uri(config, '/network/{net}'.format(net=net_vni))
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response = requests.get(
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request_uri
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)
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if response.status_code != 200 and net_vni != 'cluster':
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net_list.append(ansiprint.red() + net_vni + ansiprint.end() + ' [invalid]')
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else:
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net_list.append(net_vni)
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ainformation.append('')
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ainformation.append('{}Networks:{} {}'.format(ansiprint.purple(), ansiprint.end(), ', '.join(net_list)))
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if long_output == True:
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# Disk list
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ainformation.append('')
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name_length = 0
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for disk in domain_information['disks']:
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_name_length = len(disk['name']) + 1
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if _name_length > name_length:
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name_length = _name_length
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ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus{4}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), 'Name', ansiprint.end(), width=name_length))
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for disk in domain_information['disks']:
|
|
ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5}'.format(domain_information['disks'].index(disk), disk['type'], disk['name'], disk['dev'], disk['bus'], width=name_length))
|
|
ainformation.append('')
|
|
ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
|
|
for net in domain_information['networks']:
|
|
ainformation.append(' {0: <3} {1: <8} {2: <10} {3: <8} {4}'.format(domain_information['networks'].index(net), net['type'], net['source'], net['model'], net['mac']))
|
|
# Controller list
|
|
ainformation.append('')
|
|
ainformation.append('{}Controllers:{} {}ID Type Model{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
|
|
for controller in domain_information['controllers']:
|
|
ainformation.append(' {0: <3} {1: <14} {2: <8}'.format(domain_information['controllers'].index(controller), controller['type'], controller['model']))
|
|
|
|
# Join it all together
|
|
ainformation.append('')
|
|
return '\n'.join(ainformation)
|
|
|
|
def format_list(config, vm_list, raw):
|
|
# Handle single-element lists
|
|
if not isinstance(vm_list, list):
|
|
vm_list = [ vm_list ]
|
|
|
|
# Function to strip the "br" off of nets and return a nicer list
|
|
def getNiceNetID(domain_information):
|
|
# Network list
|
|
net_list = []
|
|
for net in domain_information['networks']:
|
|
# Split out just the numerical (VNI) part of the brXXXX name
|
|
net_vnis = re.findall(r'\d+', net['source'])
|
|
if net_vnis:
|
|
net_vni = net_vnis[0]
|
|
else:
|
|
net_vni = re.sub('br', '', net['source'])
|
|
net_list.append(net_vni)
|
|
return net_list
|
|
|
|
# Handle raw mode since it just lists the names
|
|
if raw:
|
|
ainformation = list()
|
|
for vm in sorted(item['name'] for item in vm_list):
|
|
ainformation.append(vm)
|
|
return '\n'.join(ainformation)
|
|
|
|
vm_list_output = []
|
|
|
|
# Determine optimal column widths
|
|
# Dynamic columns: node_name, node, migrated
|
|
vm_name_length = 5
|
|
vm_uuid_length = 37
|
|
vm_state_length = 6
|
|
vm_nets_length = 9
|
|
vm_ram_length = 8
|
|
vm_vcpu_length = 6
|
|
vm_node_length = 8
|
|
vm_migrated_length = 10
|
|
for domain_information in vm_list:
|
|
net_list = getNiceNetID(domain_information)
|
|
# vm_name column
|
|
_vm_name_length = len(domain_information['name']) + 1
|
|
if _vm_name_length > vm_name_length:
|
|
vm_name_length = _vm_name_length
|
|
# vm_state column
|
|
_vm_state_length = len(domain_information['state']) + 1
|
|
if _vm_state_length > vm_state_length:
|
|
vm_state_length = _vm_state_length
|
|
# vm_nets column
|
|
_vm_nets_length = len(','.join(net_list)) + 1
|
|
if _vm_nets_length > vm_nets_length:
|
|
vm_nets_length = _vm_nets_length
|
|
# vm_node column
|
|
_vm_node_length = len(domain_information['node']) + 1
|
|
if _vm_node_length > vm_node_length:
|
|
vm_node_length = _vm_node_length
|
|
# vm_migrated column
|
|
_vm_migrated_length = len(domain_information['migrated']) + 1
|
|
if _vm_migrated_length > vm_migrated_length:
|
|
vm_migrated_length = _vm_migrated_length
|
|
|
|
# Format the string (header)
|
|
vm_list_output.append(
|
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
|
|
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
|
|
{vm_networks: <{vm_nets_length}} \
|
|
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
|
|
{vm_node: <{vm_node_length}} \
|
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
|
vm_name_length=vm_name_length,
|
|
vm_uuid_length=vm_uuid_length,
|
|
vm_state_length=vm_state_length,
|
|
vm_nets_length=vm_nets_length,
|
|
vm_ram_length=vm_ram_length,
|
|
vm_vcpu_length=vm_vcpu_length,
|
|
vm_node_length=vm_node_length,
|
|
vm_migrated_length=vm_migrated_length,
|
|
bold=ansiprint.bold(),
|
|
end_bold=ansiprint.end(),
|
|
vm_state_colour='',
|
|
end_colour='',
|
|
vm_name='Name',
|
|
vm_uuid='UUID',
|
|
vm_state='State',
|
|
vm_networks='Networks',
|
|
vm_memory='RAM (M)',
|
|
vm_vcpu='vCPUs',
|
|
vm_node='Node',
|
|
vm_migrated='Migrated'
|
|
)
|
|
)
|
|
|
|
# Keep track of nets we found to be valid to cut down on duplicate API hits
|
|
valid_net_list = []
|
|
# Format the string (elements)
|
|
for domain_information in vm_list:
|
|
if domain_information['state'] == 'start':
|
|
vm_state_colour = ansiprint.green()
|
|
elif domain_information['state'] == 'restart':
|
|
vm_state_colour = ansiprint.yellow()
|
|
elif domain_information['state'] == 'shutdown':
|
|
vm_state_colour = ansiprint.yellow()
|
|
elif domain_information['state'] == 'stop':
|
|
vm_state_colour = ansiprint.red()
|
|
elif domain_information['state'] == 'fail':
|
|
vm_state_colour = ansiprint.red()
|
|
else:
|
|
vm_state_colour = ansiprint.blue()
|
|
|
|
# Handle colouring for an invalid network config
|
|
raw_net_list = getNiceNetID(domain_information)
|
|
net_list = []
|
|
vm_net_colour = ''
|
|
for net_vni in raw_net_list:
|
|
if not net_vni in valid_net_list:
|
|
request_uri = get_request_uri(config, '/network/{net}'.format(net=net_vni))
|
|
response = requests.get(
|
|
request_uri
|
|
)
|
|
if response.status_code != 200 and net_vni != 'cluster':
|
|
vm_net_colour = ansiprint.red()
|
|
else:
|
|
valid_net_list.append(net_vni)
|
|
|
|
net_list.append(net_vni)
|
|
|
|
vm_list_output.append(
|
|
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
|
|
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
|
|
{vm_net_colour}{vm_networks: <{vm_nets_length}}{end_colour} \
|
|
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
|
|
{vm_node: <{vm_node_length}} \
|
|
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
|
|
vm_name_length=vm_name_length,
|
|
vm_uuid_length=vm_uuid_length,
|
|
vm_state_length=vm_state_length,
|
|
vm_nets_length=vm_nets_length,
|
|
vm_ram_length=vm_ram_length,
|
|
vm_vcpu_length=vm_vcpu_length,
|
|
vm_node_length=vm_node_length,
|
|
vm_migrated_length=vm_migrated_length,
|
|
bold='',
|
|
end_bold='',
|
|
vm_state_colour=vm_state_colour,
|
|
end_colour=ansiprint.end(),
|
|
vm_name=domain_information['name'],
|
|
vm_uuid=domain_information['uuid'],
|
|
vm_state=domain_information['state'],
|
|
vm_net_colour=vm_net_colour,
|
|
vm_networks=','.join(net_list),
|
|
vm_memory=domain_information['memory'],
|
|
vm_vcpu=domain_information['vcpu'],
|
|
vm_node=domain_information['node'],
|
|
vm_migrated=domain_information['migrated']
|
|
)
|
|
)
|
|
|
|
return '\n'.join(sorted(vm_list_output))
|