545 lines
20 KiB
Python
Executable File
545 lines
20 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
# ova.py - PVC OVA parser library
|
|
# Part of the Parallel Virtual Cluster (PVC) system
|
|
#
|
|
# Copyright (C) 2018-2020 Joshua M. Boniface <joshua@boniface.me>
|
|
#
|
|
# This program is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This program is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU General Public License
|
|
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
|
#
|
|
###############################################################################
|
|
|
|
import flask
|
|
import psycopg2
|
|
import psycopg2.extras
|
|
import re
|
|
import math
|
|
import tarfile
|
|
|
|
import lxml.etree
|
|
|
|
from werkzeug.formparser import parse_form_data
|
|
|
|
import daemon_lib.common as pvc_common
|
|
import daemon_lib.ceph as pvc_ceph
|
|
|
|
import pvcapid.provisioner as provisioner
|
|
|
|
config = None # Set in this namespace by flaskapi
|
|
|
|
#
|
|
# Common functions
|
|
#
|
|
|
|
# Database connections
|
|
def open_database(config):
|
|
conn = psycopg2.connect(
|
|
host=config['database_host'],
|
|
port=config['database_port'],
|
|
dbname=config['database_name'],
|
|
user=config['database_user'],
|
|
password=config['database_password']
|
|
)
|
|
cur = conn.cursor(cursor_factory=psycopg2.extras.RealDictCursor)
|
|
return conn, cur
|
|
|
|
def close_database(conn, cur, failed=False):
|
|
if not failed:
|
|
conn.commit()
|
|
cur.close()
|
|
conn.close()
|
|
|
|
#
|
|
# OVA functions
|
|
#
|
|
def list_ova(limit, is_fuzzy=True):
|
|
if limit:
|
|
if is_fuzzy:
|
|
# Handle fuzzy vs. non-fuzzy limits
|
|
if not re.match('[^].*', limit):
|
|
limit = '%' + limit
|
|
else:
|
|
limit = limit[1:]
|
|
if not re.match('.*[$]', limit):
|
|
limit = limit + '%'
|
|
else:
|
|
limit = limit[:-1]
|
|
|
|
query = "SELECT id, name FROM {} WHERE name LIKE %s;".format('ova')
|
|
args = (limit, )
|
|
else:
|
|
query = "SELECT id, name FROM {};".format('ova')
|
|
args = ()
|
|
|
|
conn, cur = open_database(config)
|
|
cur.execute(query, args)
|
|
data = cur.fetchall()
|
|
close_database(conn, cur)
|
|
|
|
ova_data = list()
|
|
|
|
for ova in data:
|
|
ova_id = ova.get('id')
|
|
ova_name = ova.get('name')
|
|
|
|
query = "SELECT pool, volume_name, volume_format, disk_id, disk_size_gb FROM {} WHERE ova = %s;".format('ova_volume')
|
|
args = (ova_id,)
|
|
conn, cur = open_database(config)
|
|
cur.execute(query, args)
|
|
volumes = cur.fetchall()
|
|
close_database(conn, cur)
|
|
|
|
ova_data.append({'id': ova_id, 'name': ova_name, 'volumes': volumes})
|
|
|
|
if ova_data:
|
|
return ova_data, 200
|
|
else:
|
|
return {'message': 'No OVAs found.'}, 404
|
|
|
|
def delete_ova(name):
|
|
ova_data, retcode = list_ova(name, is_fuzzy=False)
|
|
if retcode != 200:
|
|
retmsg = {'message': 'The OVA "{}" does not exist.'.format(name)}
|
|
retcode = 400
|
|
return retmsg, retcode
|
|
|
|
conn, cur = open_database(config)
|
|
ova_id = ova_data[0].get('id')
|
|
try:
|
|
# Get the list of volumes for this OVA
|
|
query = "SELECT pool, volume_name FROM ova_volume WHERE ova = %s;"
|
|
args = (ova_id,)
|
|
cur.execute(query, args)
|
|
volumes = cur.fetchall()
|
|
|
|
# Remove each volume for this OVA
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
for volume in volumes:
|
|
pvc_ceph.remove_volume(zk_conn, volume.get('pool'), volume.get('volume_name'))
|
|
|
|
# Delete the volume entries from the database
|
|
query = "DELETE FROM ova_volume WHERE ova = %s;"
|
|
args = (ova_id,)
|
|
cur.execute(query, args)
|
|
|
|
# Delete the profile entries from the database
|
|
query = "DELETE FROM profile WHERE ova = %s;"
|
|
args = (ova_id,)
|
|
cur.execute(query, args)
|
|
|
|
# Delete the system_template entries from the database
|
|
query = "DELETE FROM system_template WHERE ova = %s;"
|
|
args = (ova_id,)
|
|
cur.execute(query, args)
|
|
|
|
# Delete the OVA entry from the database
|
|
query = "DELETE FROM ova WHERE id = %s;"
|
|
args = (ova_id,)
|
|
cur.execute(query, args)
|
|
|
|
retmsg = {"message": 'Removed OVA image "{}".'.format(name)}
|
|
retcode = 200
|
|
except Exception as e:
|
|
retmsg = {'message': 'Failed to remove OVA "{}": {}'.format(name, e)}
|
|
retcode = 400
|
|
close_database(conn, cur)
|
|
return retmsg, retcode
|
|
|
|
def upload_ova(pool, name, ova_size):
|
|
ova_archive = None
|
|
|
|
# Cleanup function
|
|
def cleanup_ova_maps_and_volumes():
|
|
# Close the OVA archive
|
|
if ova_archive:
|
|
ova_archive.close()
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
# Unmap the OVA temporary blockdev
|
|
retflag, retdata = pvc_ceph.unmap_volume(zk_conn, pool, "ova_{}".format(name))
|
|
# Remove the OVA temporary blockdev
|
|
retflag, retdata = pvc_ceph.remove_volume(zk_conn, pool, "ova_{}".format(name))
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
|
|
# Normalize the OVA size to bytes
|
|
ova_size_bytes = int(pvc_ceph.format_bytes_fromhuman(ova_size)[:-1])
|
|
ova_size = pvc_ceph.format_bytes_fromhuman(ova_size)
|
|
|
|
# Verify that the cluster has enough space to store the OVA volumes (2x OVA size, temporarily, 1x permanently)
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
pool_information = pvc_ceph.getPoolInformation(zk_conn, pool)
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
pool_free_space_bytes = int(pool_information['stats']['free_bytes'])
|
|
if ova_size_bytes * 2 >= pool_free_space_bytes:
|
|
output = {
|
|
'message': "The cluster does not have enough free space ({}) to store the OVA volume ({}).".format(
|
|
pvc_ceph.format_bytes_tohuman(pool_free_space_bytes),
|
|
pvc_ceph.format_bytes_tohuman(ova_size_bytes)
|
|
)
|
|
}
|
|
retcode = 400
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
# Create a temporary OVA blockdev
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
retflag, retdata = pvc_ceph.add_volume(zk_conn, pool, "ova_{}".format(name), ova_size)
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
if not retflag:
|
|
output = {
|
|
'message': retdata.replace('\"', '\'')
|
|
}
|
|
retcode = 400
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
# Map the temporary OVA blockdev
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
retflag, retdata = pvc_ceph.map_volume(zk_conn, pool, "ova_{}".format(name))
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
if not retflag:
|
|
output = {
|
|
'message': retdata.replace('\"', '\'')
|
|
}
|
|
retcode = 400
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
ova_blockdev = retdata
|
|
|
|
# Save the OVA data to the temporary blockdev directly
|
|
try:
|
|
# This sets up a custom stream_factory that writes directly into the ova_blockdev,
|
|
# rather than the standard stream_factory which writes to a temporary file waiting
|
|
# on a save() call. This will break if the API ever uploaded multiple files, but
|
|
# this is an acceptable workaround.
|
|
def ova_stream_factory(total_content_length, filename, content_type, content_length=None):
|
|
return open(ova_blockdev, 'wb')
|
|
parse_form_data(flask.request.environ, stream_factory=ova_stream_factory)
|
|
except Exception:
|
|
output = {
|
|
'message': "Failed to upload or write OVA file to temporary volume."
|
|
}
|
|
retcode = 400
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
try:
|
|
# Set up the TAR reader for the OVA temporary blockdev
|
|
ova_archive = tarfile.open(name=ova_blockdev)
|
|
# Determine the files in the OVA
|
|
members = ova_archive.getmembers()
|
|
except tarfile.TarError:
|
|
output = {
|
|
'message': "The uploaded OVA file is not readable."
|
|
}
|
|
retcode = 400
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
# Parse through the members list and extract the OVF file
|
|
for element in set(x for x in members if re.match('.*[.]ovf$', x.name)):
|
|
ovf_file = ova_archive.extractfile(element)
|
|
|
|
# Parse the OVF file to get our VM details
|
|
ovf_parser = OVFParser(ovf_file)
|
|
ovf_xml_raw = ovf_parser.getXML()
|
|
virtual_system = ovf_parser.getVirtualSystems()[0]
|
|
virtual_hardware = ovf_parser.getVirtualHardware(virtual_system)
|
|
disk_map = ovf_parser.getDiskMap(virtual_system)
|
|
|
|
# Close the OVF file
|
|
ovf_file.close()
|
|
|
|
# Create and upload each disk volume
|
|
for idx, disk in enumerate(disk_map):
|
|
disk_identifier = "sd{}".format(chr(ord('a') + idx))
|
|
volume = "ova_{}_{}".format(name, disk_identifier)
|
|
dev_src = disk.get('src')
|
|
dev_size_raw = ova_archive.getmember(dev_src).size
|
|
vm_volume_size = disk.get('capacity')
|
|
|
|
# Normalize the dev size to bytes
|
|
dev_size = pvc_ceph.format_bytes_fromhuman(dev_size_raw)
|
|
|
|
def cleanup_img_maps():
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
# Unmap the temporary blockdev
|
|
retflag, retdata = pvc_ceph.unmap_volume(zk_conn, pool, volume)
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
|
|
# Create the blockdev
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
retflag, retdata = pvc_ceph.add_volume(zk_conn, pool, volume, dev_size)
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
if not retflag:
|
|
output = {
|
|
'message': retdata.replace('\"', '\'')
|
|
}
|
|
retcode = 400
|
|
cleanup_img_maps()
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
# Map the blockdev
|
|
zk_conn = pvc_common.startZKConnection(config['coordinators'])
|
|
retflag, retdata = pvc_ceph.map_volume(zk_conn, pool, volume)
|
|
pvc_common.stopZKConnection(zk_conn)
|
|
if not retflag:
|
|
output = {
|
|
'message': retdata.replace('\"', '\'')
|
|
}
|
|
retcode = 400
|
|
cleanup_img_maps()
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
temp_blockdev = retdata
|
|
|
|
try:
|
|
# Open (extract) the TAR archive file and seek to byte 0
|
|
vmdk_file = ova_archive.extractfile(disk.get('src'))
|
|
vmdk_file.seek(0)
|
|
# Open the temporary blockdev and seek to byte 0
|
|
blk_file = open(temp_blockdev, 'wb')
|
|
blk_file.seek(0)
|
|
# Close blk_file (and flush the buffers)
|
|
blk_file.close()
|
|
# Close vmdk_file
|
|
vmdk_file.close()
|
|
# Perform an OS-level sync
|
|
pvc_common.run_os_command('sync')
|
|
except Exception:
|
|
output = {
|
|
'message': "Failed to write image file '{}' to temporary volume.".format(disk.get('src'))
|
|
}
|
|
retcode = 400
|
|
cleanup_img_maps()
|
|
cleanup_ova_maps_and_volumes()
|
|
return output, retcode
|
|
|
|
cleanup_img_maps()
|
|
|
|
cleanup_ova_maps_and_volumes()
|
|
|
|
# Prepare the database entries
|
|
query = "INSERT INTO ova (name, ovf) VALUES (%s, %s);"
|
|
args = (name, ovf_xml_raw)
|
|
conn, cur = open_database(config)
|
|
try:
|
|
cur.execute(query, args)
|
|
close_database(conn, cur)
|
|
except Exception as e:
|
|
output = {
|
|
'message': 'Failed to create OVA entry "{}": {}'.format(name, e)
|
|
}
|
|
retcode = 400
|
|
close_database(conn, cur)
|
|
return output, retcode
|
|
|
|
# Get the OVA database id
|
|
query = "SELECT id FROM ova WHERE name = %s;"
|
|
args = (name, )
|
|
conn, cur = open_database(config)
|
|
cur.execute(query, args)
|
|
ova_id = cur.fetchone()['id']
|
|
close_database(conn, cur)
|
|
|
|
# Prepare disk entries in ova_volume
|
|
for idx, disk in enumerate(disk_map):
|
|
disk_identifier = "sd{}".format(chr(ord('a') + idx))
|
|
volume_type = disk.get('src').split('.')[-1]
|
|
volume = "ova_{}_{}".format(name, disk_identifier)
|
|
vm_volume_size = disk.get('capacity')
|
|
|
|
# The function always return XXXXB, so strip off the B and convert to an integer
|
|
vm_volume_size_bytes = int(pvc_ceph.format_bytes_fromhuman(vm_volume_size)[:-1])
|
|
vm_volume_size_gb = math.ceil(vm_volume_size_bytes / 1024 / 1024 / 1024)
|
|
|
|
query = "INSERT INTO ova_volume (ova, pool, volume_name, volume_format, disk_id, disk_size_gb) VALUES (%s, %s, %s, %s, %s, %s);"
|
|
args = (ova_id, pool, volume, volume_type, disk_identifier, vm_volume_size_gb)
|
|
|
|
conn, cur = open_database(config)
|
|
try:
|
|
cur.execute(query, args)
|
|
close_database(conn, cur)
|
|
except Exception as e:
|
|
output = {
|
|
'message': 'Failed to create OVA volume entry "{}": {}'.format(volume, e)
|
|
}
|
|
retcode = 400
|
|
close_database(conn, cur)
|
|
return output, retcode
|
|
|
|
# Prepare a system_template for the OVA
|
|
vcpu_count = virtual_hardware.get('vcpus')
|
|
vram_mb = virtual_hardware.get('vram')
|
|
if virtual_hardware.get('graphics-controller') == 1:
|
|
vnc = True
|
|
serial = False
|
|
else:
|
|
vnc = False
|
|
serial = True
|
|
retdata, retcode = provisioner.create_template_system(name, vcpu_count, vram_mb, serial, vnc, vnc_bind=None, ova=ova_id)
|
|
if retcode != 200:
|
|
return retdata, retcode
|
|
system_template, retcode = provisioner.list_template_system(name, is_fuzzy=False)
|
|
if retcode != 200:
|
|
return retdata, retcode
|
|
system_template_name = system_template[0].get('name')
|
|
|
|
# Prepare a barebones profile for the OVA
|
|
retdata, retcode = provisioner.create_profile(name, 'ova', system_template_name, None, None, userdata=None, script=None, ova=name, arguments=None)
|
|
if retcode != 200:
|
|
return retdata, retcode
|
|
|
|
output = {
|
|
'message': "Imported OVA image '{}'.".format(name)
|
|
}
|
|
retcode = 200
|
|
return output, retcode
|
|
|
|
#
|
|
# OVF parser
|
|
#
|
|
class OVFParser(object):
|
|
RASD_TYPE = {
|
|
"1": "vmci",
|
|
"3": "vcpus",
|
|
"4": "vram",
|
|
"5": "ide-controller",
|
|
"6": "scsi-controller",
|
|
"10": "ethernet-adapter",
|
|
"15": "cdrom",
|
|
"17": "disk",
|
|
"20": "other-storage-device",
|
|
"23": "usb-controller",
|
|
"24": "graphics-controller",
|
|
"35": "sound-controller"
|
|
}
|
|
|
|
def _getFilelist(self):
|
|
path = "{{{schema}}}References/{{{schema}}}File".format(schema=self.OVF_SCHEMA)
|
|
id_attr = "{{{schema}}}id".format(schema=self.OVF_SCHEMA)
|
|
href_attr = "{{{schema}}}href".format(schema=self.OVF_SCHEMA)
|
|
current_list = self.xml.findall(path)
|
|
results = [(x.get(id_attr), x.get(href_attr)) for x in current_list]
|
|
return results
|
|
|
|
def _getDisklist(self):
|
|
path = "{{{schema}}}DiskSection/{{{schema}}}Disk".format(schema=self.OVF_SCHEMA)
|
|
id_attr = "{{{schema}}}diskId".format(schema=self.OVF_SCHEMA)
|
|
ref_attr = "{{{schema}}}fileRef".format(schema=self.OVF_SCHEMA)
|
|
cap_attr = "{{{schema}}}capacity".format(schema=self.OVF_SCHEMA)
|
|
cap_units = "{{{schema}}}capacityAllocationUnits".format(schema=self.OVF_SCHEMA)
|
|
current_list = self.xml.findall(path)
|
|
results = [(x.get(id_attr), x.get(ref_attr), x.get(cap_attr), x.get(cap_units)) for x in current_list]
|
|
return results
|
|
|
|
def _getAttributes(self, virtual_system, path, attribute):
|
|
current_list = virtual_system.findall(path)
|
|
results = [x.get(attribute) for x in current_list]
|
|
return results
|
|
|
|
def __init__(self, ovf_file):
|
|
self.xml = lxml.etree.parse(ovf_file)
|
|
|
|
# Define our schemas
|
|
envelope_tag = self.xml.find(".")
|
|
self.XML_SCHEMA = envelope_tag.nsmap.get('xsi')
|
|
self.OVF_SCHEMA = envelope_tag.nsmap.get('ovf')
|
|
self.RASD_SCHEMA = envelope_tag.nsmap.get('rasd')
|
|
self.SASD_SCHEMA = envelope_tag.nsmap.get('sasd')
|
|
self.VSSD_SCHEMA = envelope_tag.nsmap.get('vssd')
|
|
|
|
self.ovf_version = int(self.OVF_SCHEMA.split('/')[-1])
|
|
|
|
# Get the file and disk lists
|
|
self.filelist = self._getFilelist()
|
|
self.disklist = self._getDisklist()
|
|
|
|
def getVirtualSystems(self):
|
|
return self.xml.findall("{{{schema}}}VirtualSystem".format(schema=self.OVF_SCHEMA))
|
|
|
|
def getXML(self):
|
|
return lxml.etree.tostring(self.xml, pretty_print=True).decode('utf8')
|
|
|
|
def getVirtualHardware(self, virtual_system):
|
|
hardware_list = virtual_system.findall(
|
|
"{{{schema}}}VirtualHardwareSection/{{{schema}}}Item".format(schema=self.OVF_SCHEMA)
|
|
)
|
|
virtual_hardware = {}
|
|
|
|
for item in hardware_list:
|
|
try:
|
|
item_type = self.RASD_TYPE[item.find("{{{rasd}}}ResourceType".format(rasd=self.RASD_SCHEMA)).text]
|
|
except Exception:
|
|
continue
|
|
quantity = item.find("{{{rasd}}}VirtualQuantity".format(rasd=self.RASD_SCHEMA))
|
|
if quantity is None:
|
|
virtual_hardware[item_type] = 1
|
|
else:
|
|
virtual_hardware[item_type] = quantity.text
|
|
|
|
return virtual_hardware
|
|
|
|
def getDiskMap(self, virtual_system):
|
|
# OVF v2 uses the StorageItem field, while v1 uses the normal Item field
|
|
if self.ovf_version < 2:
|
|
hardware_list = virtual_system.findall(
|
|
"{{{schema}}}VirtualHardwareSection/{{{schema}}}Item".format(schema=self.OVF_SCHEMA)
|
|
)
|
|
else:
|
|
hardware_list = virtual_system.findall(
|
|
"{{{schema}}}VirtualHardwareSection/{{{schema}}}StorageItem".format(schema=self.OVF_SCHEMA)
|
|
)
|
|
disk_list = []
|
|
|
|
for item in hardware_list:
|
|
item_type = None
|
|
|
|
if self.SASD_SCHEMA is not None:
|
|
item_type = self.RASD_TYPE[item.find("{{{sasd}}}ResourceType".format(sasd=self.SASD_SCHEMA)).text]
|
|
else:
|
|
item_type = self.RASD_TYPE[item.find("{{{rasd}}}ResourceType".format(rasd=self.RASD_SCHEMA)).text]
|
|
|
|
if item_type != 'disk':
|
|
continue
|
|
|
|
hostref = None
|
|
if self.SASD_SCHEMA is not None:
|
|
hostref = item.find("{{{sasd}}}HostResource".format(sasd=self.SASD_SCHEMA))
|
|
else:
|
|
hostref = item.find("{{{rasd}}}HostResource".format(rasd=self.RASD_SCHEMA))
|
|
if hostref is None:
|
|
continue
|
|
disk_res = hostref.text
|
|
|
|
# Determine which file this disk_res ultimately represents
|
|
(disk_id, disk_ref, disk_capacity, disk_capacity_unit) = [x for x in self.disklist if x[0] == disk_res.split('/')[-1]][0]
|
|
(file_id, disk_src) = [x for x in self.filelist if x[0] == disk_ref][0]
|
|
|
|
if disk_capacity_unit is not None:
|
|
# Handle the unit conversion
|
|
base_unit, action, multiple = disk_capacity_unit.split()
|
|
multiple_base, multiple_exponent = multiple.split('^')
|
|
disk_capacity = int(disk_capacity) * (int(multiple_base) ** int(multiple_exponent))
|
|
|
|
# Append the disk with all details to the list
|
|
disk_list.append({
|
|
"id": disk_id,
|
|
"ref": disk_ref,
|
|
"capacity": disk_capacity,
|
|
"src": disk_src
|
|
})
|
|
|
|
return disk_list
|