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-rw-r--r--deploy/environments/execution_environment.py75
1 files changed, 75 insertions, 0 deletions
diff --git a/deploy/environments/execution_environment.py b/deploy/environments/execution_environment.py
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+++ b/deploy/environments/execution_environment.py
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+###############################################################################
+# Copyright (c) 2015 Ericsson AB and others.
+# szilard.cserey@ericsson.com
+# All rights reserved. This program and the accompanying materials
+# are made available under the terms of the Apache License, Version 2.0
+# which accompanies this distribution, and is available at
+# http://www.apache.org/licenses/LICENSE-2.0
+###############################################################################
+
+
+from lxml import etree
+from dha_adapters.libvirt_adapter import LibvirtAdapter
+
+from common import (
+ exec_cmd,
+ log,
+ delete,
+)
+
+
+class ExecutionEnvironment(object):
+
+ def __init__(self, storage_dir, dha_file, root_dir):
+ self.storage_dir = storage_dir
+ self.dha = LibvirtAdapter(dha_file)
+ self.root_dir = root_dir
+ self.parser = etree.XMLParser(remove_blank_text=True)
+ self.fuel_node_id = self.dha.get_fuel_node_id()
+
+ def delete_vm(self, node_id):
+ vm_name = self.dha.get_node_property(node_id, 'libvirtName')
+ r, c = exec_cmd('virsh dumpxml %s' % vm_name, False)
+ if c:
+ return
+ self.undefine_vm_delete_disk(r, vm_name)
+
+ def undefine_vm_delete_disk(self, printout, vm_name):
+ disk_files = []
+ xml_dump = etree.fromstring(printout, self.parser)
+ disks = xml_dump.xpath('/domain/devices/disk')
+ for disk in disks:
+ sources = disk.xpath('source')
+ for source in sources:
+ source_file = source.get('file')
+ if source_file:
+ disk_files.append(source_file)
+ log('Deleting VM %s with disks %s' % (vm_name, disk_files))
+ exec_cmd('virsh destroy %s' % vm_name, False)
+ exec_cmd('virsh undefine %s' % vm_name, False)
+ for file in disk_files:
+ delete(file)
+
+ def define_vm(self, vm_name, temp_vm_file, disk_path):
+ log('Creating VM %s with disks %s' % (vm_name, disk_path))
+ with open(temp_vm_file) as f:
+ vm_xml = etree.parse(f)
+ names = vm_xml.xpath('/domain/name')
+ for name in names:
+ name.text = vm_name
+ uuids = vm_xml.xpath('/domain/uuid')
+ for uuid in uuids:
+ uuid.getparent().remove(uuid)
+ disks = vm_xml.xpath('/domain/devices/disk')
+ for disk in disks:
+ if (disk.get('type') == 'file' and
+ disk.get('device') == 'disk'):
+ sources = disk.xpath('source')
+ for source in sources:
+ disk.remove(source)
+ source = etree.Element('source')
+ source.set('file', disk_path)
+ disk.append(source)
+ with open(temp_vm_file, 'w') as f:
+ vm_xml.write(f, pretty_print=True, xml_declaration=True)
+ exec_cmd('virsh define %s' % temp_vm_file)