diff options
Diffstat (limited to 'fuel/deploy/environments/execution_environment.py')
| -rw-r--r-- | fuel/deploy/environments/execution_environment.py | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/fuel/deploy/environments/execution_environment.py b/fuel/deploy/environments/execution_environment.py new file mode 100644 index 0000000..4f612a6 --- /dev/null +++ b/fuel/deploy/environments/execution_environment.py @@ -0,0 +1,67 @@ +from lxml import etree + +import common +from dha_adapters.libvirt_adapter import LibvirtAdapter + +exec_cmd = common.exec_cmd +err = common.err +log = common.log +check_dir_exists = common.check_dir_exists +check_file_exists = common.check_file_exists +check_if_root = common.check_if_root + +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: + exec_cmd('rm -f %s' % 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)
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