/usr/sbin/kojivmd is in koji-servers 1.10.0-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# Koji virtual machine management daemon
# Copyright (c) 2010-2014 Red Hat, Inc.
#
# Koji is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation;
# version 2.1 of the License.
#
# This software 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this software; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Authors:
# Mike Bonnet <mikeb@redhat.com>
import koji
import koji.util
from koji.daemon import SCM, TaskManager
from koji.tasks import ServerExit, ServerRestart, BaseTaskHandler, MultiPlatformTask
from koji.tasks import RestartTask, RestartVerifyTask
import sys
import logging
import os
import xmlrpclib
import signal
import time
import subprocess
import libvirt
import libxml2
import random
import socket
import SimpleXMLRPCServer
import threading
import base64
import pwd
import urlgrabber
import fnmatch
from ConfigParser import ConfigParser
from optparse import OptionParser
try:
import krbV
except ImportError:
pass
# Register libvirt handler
def libvirt_callback(ignore, err):
if err[3] != libvirt.VIR_ERR_ERROR:
# Don't log libvirt errors: global error handler will do that
logging.warn("Non-error from libvirt: '%s'", err[2])
libvirt.registerErrorHandler(f=libvirt_callback, ctx=None)
def get_options():
"""process options from command line and config file"""
# parse command line args
parser = OptionParser()
parser.add_option("-c", "--config", dest="configFile",
help="use alternate configuration file", metavar="FILE",
default="/etc/kojivmd/kojivmd.conf")
parser.add_option("--user", help="specify user")
parser.add_option("--password", help="specify password")
parser.add_option("-f", "--fg", dest="daemon",
action="store_false", default=True,
help="run in foreground")
parser.add_option("--force-lock", action="store_true", default=False,
help="force lock for exclusive session")
parser.add_option("-v", "--verbose", action="store_true", default=False,
help="show verbose output")
parser.add_option("-d", "--debug", action="store_true", default=False,
help="show debug output")
parser.add_option("--debug-task", action="store_true", default=False,
help="enable debug output for tasks")
parser.add_option("--debug-xmlrpc", action="store_true", default=False,
help="show xmlrpc debug output")
parser.add_option("--skip-main", action="store_true", default=False,
help="don't actually run main")
parser.add_option("--maxjobs", type='int', help="Specify maxjobs")
parser.add_option("--sleeptime", type='int', help="Specify the polling interval")
parser.add_option("--admin-emails", help="Address(es) to send error notices to")
parser.add_option("--workdir", help="Specify workdir")
parser.add_option("--pluginpath", help="Specify plugin search path")
parser.add_option("--plugin", action="append", help="Load specified plugin")
parser.add_option("-s", "--server", help="url of XMLRPC server")
(options, args) = parser.parse_args()
if args:
parser.error("incorrect number of arguments")
#not reached
assert False
# load local config
config = ConfigParser()
config.read(options.configFile)
for x in config.sections():
if x != 'kojivmd':
quit('invalid section found in config file: %s' % x)
defaults = {'sleeptime': 15,
'maxjobs': 5,
'minspace': 8192,
'minmem': 4096,
'vmuser': 'qemu',
'admin_emails': None,
'workdir': '/tmp/koji',
'topurl': '',
'imagedir': '/var/lib/libvirt/images',
'pluginpath': '/usr/lib/koji-vm-plugins',
'privaddr': '192.168.122.1',
'portbase': 7000,
'smtphost': 'example.com',
'from_addr': 'Koji Build System <buildsys@example.com>',
'krb_principal': None,
'host_principal_format': 'compile/%s@EXAMPLE.COM',
'keytab': '/etc/kojivmd/kojivmd.keytab',
'ccache': '/var/tmp/kojivmd.ccache',
'krbservice': 'host',
'server': None,
'user': None,
'password': None,
'retry_interval': 60,
'max_retries': 120,
'offline_retry': True,
'offline_retry_interval': 120,
'allowed_scms': '',
'cert': '/etc/kojivmd/client.crt',
'ca': '/etc/kojivmd/clientca.crt',
'serverca': '/etc/kojivmd/serverca.crt'}
if config.has_section('kojivmd'):
for name, value in config.items('kojivmd'):
if name in ['sleeptime', 'maxjobs', 'minspace', 'minmem',
'retry_interval', 'max_retries', 'offline_retry_interval',
'portbase']:
try:
defaults[name] = int(value)
except ValueError:
quit("value for %s option must be a valid integer" % name)
elif name in ['offline_retry']:
defaults[name] = config.getboolean('kojivmd', name)
elif name in ['plugin', 'plugins']:
defaults['plugin'] = value.split()
elif name in defaults.keys():
defaults[name] = value
else:
quit("unknown config option: %s" % name)
for name, value in defaults.items():
if getattr(options, name, None) is None:
setattr(options, name, value)
#make sure workdir exists
if not os.path.exists(options.workdir):
koji.ensuredir(options.workdir)
if not options.server:
parser.error("--server argument required")
return options
def quit(msg=None, code=1):
if msg:
logging.getLogger("koji.vm").error(msg)
sys.stderr.write('%s\n' % msg)
sys.stderr.flush()
sys.exit(code)
def main(options, session):
logger = logging.getLogger("koji.vm")
logger.info('Starting up')
tm = VMTaskManager(options, session)
tm.findHandlers(globals())
if options.plugin:
#load plugins
pt = koji.plugin.PluginTracker(path=options.pluginpath.split(':'))
for name in options.plugin:
logger.info('Loading plugin: %s', name)
tm.scanPlugin(pt.load(name))
def shutdown(*args):
raise SystemExit
def restart(*args):
logger.warn("Initiating graceful restart")
tm.restart_pending = True
signal.signal(signal.SIGTERM,shutdown)
signal.signal(signal.SIGUSR1,restart)
taken = False
tm.cleanupAllVMs()
while True:
try:
tm.updateBuildroots(nolocal=True)
tm.updateTasks()
taken = tm.getNextTask()
tm.cleanupExpiredVMs()
except (SystemExit,ServerExit,KeyboardInterrupt):
logger.warn("Exiting")
break
except ServerRestart:
logger.warn("Restarting")
os.execv(sys.argv[0], sys.argv)
except koji.AuthExpired:
logger.error('Session expired')
break
except koji.RetryError:
raise
except:
# XXX - this is a little extreme
# log the exception and continue
logger.error('Error in main loop', exc_info=True)
try:
if not taken:
# Only sleep if we didn't take a task, otherwise retry immediately.
# The load-balancing code in getNextTask() will prevent a single builder
# from getting overloaded.
time.sleep(options.sleeptime)
except (SystemExit,KeyboardInterrupt):
logger.warn("Exiting")
break
logger.warn("Shutting down, please wait...")
tm.shutdown()
session.logout()
sys.exit(0)
####################
# Tasks for handling VM lifecycle
####################
class DaemonXMLRPCServer(SimpleXMLRPCServer.SimpleXMLRPCServer):
allow_reuse_address = True
def __init__(self, addr, port):
if sys.version_info[:2] <= (2, 4):
SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, (addr, port), logRequests=False)
else:
SimpleXMLRPCServer.SimpleXMLRPCServer.__init__(self, (addr, port), logRequests=False,
allow_none=True)
self.logger = logging.getLogger('koji.vm.DaemonXMLRPCServer')
self.socket.settimeout(5)
self.active = True
def server_close(self):
self.active = False
SimpleXMLRPCServer.SimpleXMLRPCServer.server_close(self)
def handle_while_active(self):
while self.active:
try:
conn, (ipaddr, port) = self.get_request()
self.logger.debug('request from %s:%s', ipaddr, port)
if self.verify_request(conn, (ipaddr, port)):
try:
self.process_request(conn, (ipaddr, port))
finally:
self.close_request(conn)
except socket.timeout:
pass
except:
self.logger.error('Error handling requests', exc_info=True)
if sys.version_info[:2] <= (2, 4):
# Copy and paste from SimpleXMLRPCServer, with the addition of passing
# allow_none=True to xmlrpclib.dumps()
def _marshaled_dispatch(self, data, dispatch_method = None):
params, method = xmlrpclib.loads(data)
try:
if dispatch_method is not None:
response = dispatch_method(method, params)
else:
response = self._dispatch(method, params)
response = (response,)
response = xmlrpclib.dumps(response, methodresponse=1, allow_none=True)
except xmlrpclib.Fault, fault:
response = xmlrpclib.dumps(fault)
except:
# report exception back to server
response = xmlrpclib.dumps(
xmlrpclib.Fault(1, "%s:%s" % (sys.exc_type, sys.exc_value))
)
return response
class WinBuildTask(MultiPlatformTask):
"""
Spawns a vmExec task to run a build, and imports the output.
"""
Methods = ['winbuild']
_taskWeight = 0.2
def handler(self, name, source_url, target, opts=None):
if not opts:
opts = {}
subopts = koji.util.dslice(opts, ['winspec', 'patches'],
strict=False)
# winspec and patches options are urls
# verify the urls before passing them to the VM
for url in [source_url] + subopts.values():
scm = SCM(url)
scm.assert_allowed(self.options.allowed_scms)
task_info = self.session.getTaskInfo(self.id)
target_info = self.session.getBuildTarget(target)
if not target_info:
raise koji.BuildError, 'unknown build target: %s' % target
dest_tag = self.session.getTag(target_info['dest_tag'], strict=True)
build_tag = self.session.getTag(target_info['build_tag'], strict=True)
repo_id = opts.get('repo_id')
if repo_id:
repo_info = session.repoInfo(repo_id)
event_id = repo_info['create_event']
if not repo_info:
raise koji.BuildError, 'invalid repo ID: %s' % repo_id
policy_data = {
'user_id' : task_info['owner'],
'source' : source_url,
'task_id' : self.id,
'build_tag' : build_tag['id'],
'skip_tag' : bool(opts.get('skip_tag')),
'target': target_info['id']
}
if not opts.get('skip_tag'):
policy_data['tag'] = dest_tag['id']
self.session.host.assertPolicy('build_from_repo_id', policy_data)
else:
repo_info = self.getRepo(build_tag['id'])
repo_id = repo_info['id']
event_id = None
subopts['repo_id'] = repo_id
task_opts = koji.util.dslice(opts, ['timeout', 'cpus', 'mem', 'static_mac'], strict=False)
task_id = self.session.host.subtask(method='vmExec',
arglist=[name, [source_url, build_tag['name'], subopts], task_opts],
label=name[:255],
parent=self.id)
results = self.wait(task_id)[task_id]
results['task_id'] = task_id
build_info = None
if not opts.get('scratch'):
build_info = koji.util.dslice(results, ['name', 'version', 'release', 'epoch'])
build_info['package_name'] = build_info['name']
pkg_cfg = self.session.getPackageConfig(dest_tag['id'], build_info['name'], event=event_id)
if not opts.get('skip_tag'):
# Make sure package is on the list for this tag
if pkg_cfg is None:
raise koji.BuildError, "package %s not in list for tag %s" \
% (build_info['name'], dest_tag['name'])
elif pkg_cfg['blocked']:
raise koji.BuildError, "package %s is blocked for tag %s" \
% (build_info['name'], dest_tag['name'])
build_info = self.session.host.initWinBuild(self.id, build_info,
koji.util.dslice(results, ['platform']))
build_id = build_info['id']
try:
rpm_results = None
spec_url = opts.get('specfile')
if spec_url:
rpm_results = self.buildWrapperRPM(spec_url, task_id, target_info, build_info, repo_id,
channel='default')
if opts.get('scratch'):
self.session.host.moveWinBuildToScratch(self.id, results, rpm_results)
else:
self.session.host.completeWinBuild(self.id, build_id, results, rpm_results)
except (SystemExit, ServerExit, KeyboardInterrupt):
# we do not trap these
raise
except:
if not opts.get('scratch'):
# scratch builds do not get imported
self.session.host.failBuild(self.id, build_id)
# reraise the exception
raise
if not opts.get('scratch') and not opts.get('skip_tag'):
tag_task_id = self.session.host.subtask(method='tagBuild',
arglist=[dest_tag['id'], build_id],
label='tag',
channel='default',
parent=self.id)
self.wait(tag_task_id)
class VMExecTask(BaseTaskHandler):
"""
Handles the startup, state-tracking, and shutdown of a VM
for the purposes for executing a single task.
"""
Methods = ['vmExec']
_taskWeight = 3.0
CLONE_PREFIX = 'koji-clone-'
QCOW2_EXT = '.qcow2'
def __init__(self, *args, **kw):
super(VMExecTask, self).__init__(*args, **kw)
self.task_manager = xmlrpclib.ServerProxy('http://%s:%s/' % (self.options.privaddr, self.options.portbase),
allow_none=True)
self.port = None
self.server = None
self.task_info = None
self.buildreq_dir = os.path.join(self.workdir, 'buildreqs')
koji.ensuredir(self.buildreq_dir)
self.output_dir = os.path.join(self.workdir, 'output')
koji.ensuredir(self.output_dir)
self.output = None
self.success = None
def mkqcow2(self, clone_name, source_disk, disk_num):
new_name = clone_name + '-disk-' + str(disk_num) + self.QCOW2_EXT
new_path = os.path.join(self.options.imagedir, new_name)
cmd = ['/usr/bin/qemu-img', 'create', '-f', 'qcow2', '-o', 'backing_file=%s' % source_disk, new_path]
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, close_fds=True)
output, dummy = proc.communicate()
ret = proc.wait()
if ret:
raise koji.BuildError, 'unable to create qcow2 image, "%s" returned %s; output was: %s' % \
(' '.join(cmd), ret, output)
vm_user = pwd.getpwnam(self.options.vmuser)
os.chown(new_path, vm_user.pw_uid, vm_user.pw_gid)
return new_path
def updateXML(self, xml, opts):
"""Update the VM xml to reflect the task options"""
doc = libxml2.parseDoc(xml)
ctx = doc.xpathNewContext()
if opts.get('cpus'):
cpus = opts['cpus']
cpu_node = ctx.xpathEval('/domain/vcpu')[0]
if str(cpus) != cpu_node.getContent():
cpu_node.setContent(str(cpus))
if opts.get('mem'):
mem = opts['mem']
# mem is in mbytes, libvirt expects kbytes
mem = mem * 1024
mem_node = ctx.xpathEval('/domain/memory')[0]
if mem > int(mem_node.getContent()):
mem_node.setContent(str(mem))
curr_mem_node = ctx.xpathEval('/domain/currentMemory')[0]
if str(mem) != curr_mem_node.getContent():
curr_mem_node.setContent(str(mem))
fixed_xml = str(doc)
ctx.xpathFreeContext()
doc.freeDoc()
return fixed_xml
def clone(self, conn, name, opts):
"""
Clone the VM named "name" and return the name of the cloned VM.
All disks will be qcow2 images backed by the storage of the original
VM. The original VM must be shutdown, or this will raise an error.
"""
clone_name = self.CLONE_PREFIX + str(self.id) + '-' + name
clone_name = clone_name[:50]
orig_vm = conn.lookupByName(name)
orig_paths = self.guestDisks(orig_vm)
cmd = ["virt-clone", "--original", name, "--name", clone_name,
"--preserve-data"]
for idx, orig_disk in enumerate(orig_paths):
new_disk = self.mkqcow2(clone_name, orig_disk, idx)
cmd += ["--file", new_disk]
if opts.get('static_mac'):
orig_mac = self.macAddr(orig_vm)
cmd += ["--mac", orig_mac]
proc = subprocess.Popen(cmd, stdout=subprocess.PIPE,
stderr=subprocess.STDOUT, close_fds=True)
output, dummy = proc.communicate()
ret = proc.wait()
if ret:
raise koji.BuildError('unable to clone VM: '
'"%s" returned %s; output was: %s' %
(' '.join(cmd), ret, output))
# Set the cpus and mem parameters directly in the XML.
newvm = conn.lookupByName(clone_name)
clone_xml = self.updateXML(newvm.XMLDesc(0), opts)
conn.defineXML(clone_xml)
return clone_name
def guestDisks(self, vm):
"""
Parse cloneable disks out of the original VM XML
"""
doc = libxml2.parseDoc(vm.XMLDesc(0))
ctx = doc.xpathNewContext()
ret = []
nodelist = ctx.xpathEval('/domain/devices/disk[@device="disk" and @type="file"]/source')
for node in nodelist:
for prop in node.properties:
if prop.name in ["file", "dev"]:
ret.append(node.prop(prop.name))
break
ctx.xpathFreeContext()
doc.freeDoc()
return ret
def macAddr(self, vm):
"""
Return the MAC address of the first network interface configured for the given VM.
"""
doc = libxml2.parseDoc(vm.XMLDesc(0))
ctx = doc.xpathNewContext()
nodelist = ctx.xpathEval('/domain/devices/interface[@type="network"]/mac')
if not nodelist:
raise koji.BuildError, 'no network interfaces configured for %s' % vm.name()
addr = nodelist[0].prop('address')
ctx.xpathFreeContext()
doc.freeDoc()
return addr
def getTaskInfo(self):
"""
Get the command-line to run in the VM.
"""
return self.task_info
def initBuildroot(self, repo_id, platform):
"""
Create the buildroot object on the hub.
"""
# we're using platform as the arch, which is currently limited to
# 16 characters by the database schema
buildroot_id = self.session.host.newBuildRoot(repo_id, platform[:16], task_id=self.id)
# a VM doesn't require any additional initialization, so move it from INIT to BUILDING
self.session.host.setBuildRootState(buildroot_id, 'BUILDING', task_id=self.id)
return buildroot_id
def updateBuildrootFiles(self, buildroot_id, files, rpms):
"""
Update the list of files that were downloaded into the build environment.
"""
if files:
self.session.host.updateBuildrootArchives(buildroot_id, self.id,
files, project=True)
if rpms:
self.session.host.updateBuildRootList(buildroot_id, rpms, task_id=self.id)
def expireBuildroot(self, buildroot_id):
"""
Set the buildroot to the expired state.
"""
return self.session.host.setBuildRootState(buildroot_id, 'EXPIRED', task_id=self.id)
def getLatestBuild(self, tag, package, repo_id):
"""
Get information about the latest build of package "package" in tag "tag".
"""
repo_info = self.session.repoInfo(repo_id, strict=True)
builds = self.session.getLatestBuilds(tag, package=package,
event=repo_info['create_event'])
if not builds:
raise koji.BuildError, 'no build of package %s in tag %s' % (package, tag)
build = builds[0]
maven_build = self.session.getMavenBuild(build['id'])
if maven_build:
del maven_build['build_id']
build.update(maven_build)
win_build = self.session.getWinBuild(build['id'])
if win_build:
del win_build['build_id']
build.update(win_build)
return build
def getFileList(self, buildID, type, typeopts):
"""
Get the list of files of "type" for the latest build of the package "package" in tag "tag".
typeopts is a dict that is used to filter the file list.
typeopts is checked for:
patterns: comma-separated list of path/filename patterns (as used by fnmatch)
to filter the results with
If type is 'rpm', typeopts is checked for:
arches: comma-separated list of arches to include in output
If type is 'maven', typeopts is checked for:
group_ids: Maven group IDs to include in the output
artifact_ids: Maven artifact IDs to include in the output
versions: Maven versions to include in the output
If type is 'win', typeopts is checked for:
platforms: comma-separated list of platforms
flags: comma-separated list of flags
"""
if not typeopts:
typeopts = {}
if type == 'rpm':
arches = None
if typeopts.get('arches'):
arches = typeopts['arches'].split(',')
files = self.session.listRPMs(buildID=buildID, arches=arches)
else:
files = self.session.listArchives(buildID=buildID, type=type)
for fileinfo in files:
if type == 'rpm':
filepath = koji.pathinfo.rpm(fileinfo)
elif type == 'maven':
filepath = koji.pathinfo.mavenfile(fileinfo)
elif type == 'win':
filepath = koji.pathinfo.winfile(fileinfo)
else:
# XXX support other file types when available
filepath = fileinfo['filename']
fileinfo['localpath'] = filepath
if typeopts.get('patterns'):
to_filter = files
files = []
patterns = typeopts['patterns'].split(',')
for fileinfo in to_filter:
for pattern in patterns:
if fnmatch.fnmatch(fileinfo['localpath'], pattern):
files.append(fileinfo)
break
if type == 'maven':
if typeopts.get('group_ids'):
group_ids = typeopts['group_ids'].split(',')
files = [f for f in files if f['group_id'] in group_ids]
if typeopts.get('artifact_ids'):
artifact_ids = typeopts['artifact_ids'].split(',')
files = [f for f in files if f['artifact_id'] in artifact_ids]
if typeopts.get('versions'):
versions = typeopts['versions'].split(',')
files = [f for f in files if f['version'] in versions]
if type == 'win':
if typeopts.get('platforms'):
platforms = typeopts['platforms'].split(',')
files = [f for f in files if set(f['platforms'].split()).intersection(platforms)]
if typeopts.get('flags'):
flags = typeopts['flags'].split(',')
files = [f for f in files if set(f['flags'].split()).intersection(flags)]
return files
def localCache(self, buildinfo, fileinfo, type):
"""
Access a file in the local cache. If the file does not exist, it's downloaded
from the server. Returns an open file object.
"""
# fileinfo['localpath'] is set by getFileList()
localpath = os.path.join(self.buildreq_dir, buildinfo['name'], type, fileinfo['localpath'])
if not os.path.isfile(localpath):
remote_pi = koji.PathInfo(self.options.topurl)
if type == 'rpm':
remote_url = remote_pi.build(buildinfo) + '/' + \
fileinfo['localpath']
elif type == 'maven':
remote_url = remote_pi.mavenbuild(buildinfo) + '/' + \
fileinfo['localpath']
elif type == 'win':
remote_url = remote_pi.winbuild(buildinfo) + '/' + \
fileinfo['localpath']
else:
raise koji.BuildError, 'unsupported file type: %s' % type
koji.ensuredir(os.path.dirname(localpath))
urlgrabber.urlgrab(remote_url, filename=localpath)
return file(localpath, 'r')
def getFile(self, buildinfo, archiveinfo, offset, length, type):
"""
Get the contents of the file indicated by fileinfo, returning a maximum of
"length" bytes starting at "offset". Contents are returned base64-encoded.
"""
offset = int(offset)
length = int(length)
fileobj = self.localCache(buildinfo, archiveinfo, type)
try:
fileobj.seek(offset)
data = fileobj.read(length)
encoded = base64.b64encode(data)
del data
return encoded
finally:
fileobj.close()
def upload(self, path, offset, contents):
local_path = os.path.abspath(os.path.join(self.output_dir, path))
if not local_path.startswith(self.output_dir):
raise koji.BuildError, 'invalid upload path: %s' % path
koji.ensuredir(os.path.dirname(local_path))
# accept offset as a str to avoid problems with files larger than 2**32
offset = int(offset)
if offset == 0:
if os.path.exists(local_path):
raise koji.BuildError, 'cannot overwrite %s' % local_path
fobj = file(local_path, 'w')
else:
if not os.path.isfile(local_path):
raise koji.BuildError, '% does not exist' % local_path
size = os.path.getsize(local_path)
if offset != size:
raise koji.BuildError, 'cannot write to %s at offset %s, size is %s' % \
(local_path, offset, size)
fobj = file(local_path, 'r+')
fobj.seek(offset)
data = base64.b64decode(contents)
fobj.write(data)
fobj.close()
return len(data)
def uploadDirect(self, filepath, offset, size, md5sum, data):
"""
Upload contents directly to the server.
"""
remotepath = os.path.dirname(os.path.join(self.getUploadDir(), filepath))
filename = os.path.basename(filepath)
self.session.uploadFile(remotepath, filename, koji.encode_int(size),
md5sum, koji.encode_int(offset), data)
def verifyChecksum(self, path, checksum, algo='sha1'):
local_path = os.path.abspath(os.path.join(self.output_dir, path))
if not local_path.startswith(self.output_dir):
raise koji.BuildError, 'invalid path: %s' % path
if not os.path.isfile(local_path):
raise koji.BuildError, '%s does not exist' % local_path
if algo == 'sha1':
sum = koji.util.sha1_constructor()
elif algo == 'md5':
sum = koji.util.md5_constructor()
else:
raise koji.BuildError, 'unsupported checksum algorithm: %s' % algo
fobj = file(local_path, 'r')
while True:
data = fobj.read(1048576)
if not data:
break
sum.update(data)
fobj.close()
if sum.hexdigest() == checksum:
return True
else:
raise koji.BuildError, '%s checksum validation failed for %s, %s (computed) != %s (provided)' % \
(algo, local_path, sum.hexdigest(), checksum)
def closeTask(self, output):
self.output = output
self.success = True
return True
def failTask(self, output):
self.output = output
self.success = False
return True
def setupTaskServer(self):
"""
Setup the task-specific xmlrpc server to listen to requests from
the VM.
"""
self.server = DaemonXMLRPCServer(self.options.privaddr, self.port)
self.server.register_function(self.getTaskInfo)
self.server.register_function(self.closeTask)
self.server.register_function(self.failTask)
self.server.register_function(self.initBuildroot)
self.server.register_function(self.updateBuildrootFiles)
self.server.register_function(self.expireBuildroot)
self.server.register_function(self.getLatestBuild)
self.server.register_function(self.getFileList)
self.server.register_function(self.getFile)
self.server.register_function(self.upload)
self.server.register_function(self.uploadDirect)
self.server.register_function(self.verifyChecksum)
thr = threading.Thread(name='task_%s_thread' % self.id,
target=self.server.handle_while_active)
thr.setDaemon(True)
thr.start()
def handler(self, name, task_info, opts=None):
"""
Clone the VM named "name", and provide the data in "task_info" to it.
Available options:
- timeout (int): number of minutes to let the VM run before
destroying it and failing the task, default: 1440
"""
if not opts:
opts = {}
timeout = opts.get('timeout', 1440)
self.task_info = task_info
conn = libvirt.open(None)
clone_name = self.clone(conn, name, opts)
self.logger.debug('Cloned VM %s to %s',name, clone_name)
try:
vm = conn.lookupByName(clone_name)
macaddr = self.macAddr(vm)
registered = False
while not registered:
# loop in case the port is already taken
self.port = self.options.portbase + random.randint(1, 100)
registered = self.task_manager.registerVM(macaddr, clone_name, self.id, self.port)
self.setupTaskServer()
vm.create()
self.logger.info('Started VM %s', clone_name)
except libvirt.libvirtError, e:
self.logger.error('error starting VM %s', clone_name, exc_info=True)
raise koji.PreBuildError, 'error starting VM %s, error was: %s' % \
(clone_name, e)
start = time.time()
while True:
time.sleep(15)
info = vm.info()
if info[0] in (libvirt.VIR_DOMAIN_CRASHED, libvirt.VIR_DOMAIN_SHUTOFF):
self.logger.warn('VM %s crashed', clone_name)
self.server.server_close()
raise koji.BuildError, 'VM %s crashed' % clone_name
if self.success is None:
# task is still running
# make sure it hasn't exceeded the timeout
mins = (time.time() - start) / 60
if mins > timeout:
vm.destroy()
self.server.server_close()
raise koji.BuildError, 'Task did not complete after %.2f minutes, VM %s has been destroyed' % \
(mins, clone_name)
else:
vm.destroy()
self.server.server_close()
self.uploadTree(self.output_dir)
if self.success:
return self.output
else:
raise koji.BuildError, self.output
class VMTaskManager(TaskManager):
def __init__(self, options, session):
super(VMTaskManager, self).__init__(options, session)
self.libvirt_conn = libvirt.open(None)
self.macaddrs = {}
self.macaddr_lock = threading.Lock()
self.expired_vms = {}
self.setupServer()
def registerVM(self, macaddr, vm_name, task_id, port):
"""
Register a VM instance with the task manager.
"""
self.macaddr_lock.acquire()
try:
macaddr = macaddr.lower()
ports = [d[2] for d in self.macaddrs.values()]
if port in ports:
return False
if macaddr in self.macaddrs:
raise koji.PreBuildError, 'duplicate MAC address: %s' % macaddr
self.macaddrs[macaddr] = (vm_name, task_id, port)
self.logger.info('registered MAC address %s for VM %s (task ID %s, port %s)', macaddr, vm_name, task_id, port)
return True
finally:
self.macaddr_lock.release()
def getPort(self, macaddr):
"""
Get the port that the daemon associated with VM with the given MAC address is listening on.
"""
self.macaddr_lock.acquire()
try:
macaddr = macaddr.lower()
data = self.macaddrs.get(macaddr)
if data:
return data[2]
else:
raise koji.PreBuildError, 'unknown MAC address: %s' % macaddr
finally:
self.macaddr_lock.release()
def setupServer(self):
self.server = DaemonXMLRPCServer(self.options.privaddr, self.options.portbase)
self.server.register_function(self.registerVM)
self.server.register_function(self.getPort)
thr = threading.Thread(name='manager_thread', target=self.server.handle_while_active)
thr.setDaemon(True)
thr.start()
def getCloneDisks(self, vm):
doc = libxml2.parseDoc(vm.XMLDesc(0))
ctx = doc.xpathNewContext()
nodelist = ctx.xpathEval('/domain/devices/disk[@device="disk" and @type="file"]/source')
disks = []
for node in nodelist:
disk = node.prop('file')
if os.path.basename(disk).startswith(VMExecTask.CLONE_PREFIX) and \
disk.endswith(VMExecTask.QCOW2_EXT):
disks.append(disk)
ctx.xpathFreeContext()
doc.freeDoc()
return disks
def checkDisk(self):
if not os.path.exists(self.options.imagedir):
self.logger.error('No such directory: %s', self.options.imagedir)
raise IOError, 'No such directory: %s' % self.options.imagedir
fs_stat = os.statvfs(self.options.imagedir)
available = fs_stat.f_bavail * fs_stat.f_bsize
availableMB = available / 1024 / 1024
self.logger.debug('disk space available in %s: %i MB', self.options.imagedir, availableMB)
if availableMB < self.options.minspace:
self.status = 'Insufficient disk space: %i MB, %i MB required' % (availableMB, self.options.minspace)
self.logger.warn(self.status)
return False
return True
def checkMem(self):
phys_mem = os.sysconf('SC_PHYS_PAGES') * os.sysconf('SC_PAGE_SIZE') / 1024
vm_mem = 0
for vm_id in self.libvirt_conn.listDomainsID():
vm = self.libvirt_conn.lookupByID(vm_id)
info = vm.info()
# info[1] is the max. memory allocatable to the VM, and info[2] is the amount of
# memory currently used by the VM (in kbytes). We're interested in the latter.
vm_mem += info[2]
avail_mem = phys_mem - vm_mem
# options.minmem is listed in mbytes
min_mem = self.options.minmem * 1024
self.logger.debug('physical mem: %sk, allocated mem: %sk, available mem: %sk',
phys_mem, vm_mem, avail_mem)
if avail_mem < min_mem:
self.status = 'Insufficient memory: %sk allocated, %sk available, %sk required' % \
(vm_mem, avail_mem, min_mem)
self.logger.warn(self.status)
return False
return True
def checkSpace(self):
"""See if we have enough space to accept another job"""
return self.checkDisk() and self.checkMem()
def checkRelAvail(self, bin_avail, avail):
"""
Always return True, since we may be the only daemon with access
to the VM required to process this task.
"""
return True
def takeTask(self, task):
"""
Verify that this builder can handle the task before claiming it.
"""
if task['method'] == 'vmExec':
task_info = self.session.getTaskInfo(task['id'], request=True)
vm_name = task_info['request'][0]
try:
vm = self.libvirt_conn.lookupByName(vm_name)
except libvirt.libvirtError:
# if this builder does not have the requested VM,
# we can't handle the task
self.logger.debug('VM %s not available, ignoring task %i', vm_name, task['id'])
return False
return super(VMTaskManager, self).takeTask(task)
def cleanupVM(self, vm_name):
"""
Cleanup a single VM with the given name.
"""
try:
vm = self.libvirt_conn.lookupByName(vm_name)
except libvirt.libvirtError:
# if we can't find the VM by name, it has probably been cleaned up manually
self.logger.warn("Can't find %s, assuming it has already been cleaned up", vm_name)
return True
info = vm.info()
if info[0] not in (libvirt.VIR_DOMAIN_SHUTOFF, libvirt.VIR_DOMAIN_CRASHED):
vm.destroy()
self.logger.info('Shut down VM %s', vm_name)
disks = self.getCloneDisks(vm)
for disk in disks:
try:
if os.path.isfile(disk):
os.unlink(disk)
self.logger.debug('Removed disk file %s for VM %s', disk, vm_name)
except:
self.logger.error('Error removing disk file %s for VM %s', disk, vm_name,
exc_info=True)
return False
else:
# Removed all the disks successfully, so undefine the VM
vm.undefine()
self.logger.info('Cleaned up VM %s', vm_name)
return True
def cleanupAllVMs(self):
"""
Cleanup shutdown and clean up all cloned Koji VMs.
Only called once at daemon startup, so we start with a clean slate.
"""
vms = self.libvirt_conn.listDefinedDomains() + self.libvirt_conn.listDomainsID()
for vm_name in vms:
if type(vm_name) == int:
vm_name = self.libvirt_conn.lookupByID(vm_name).name()
if vm_name.startswith(VMExecTask.CLONE_PREFIX):
self.cleanupVM(vm_name)
def cleanupExpiredVMs(self):
for vm_name, task in self.expired_vms.items():
if task['state'] == koji.TASK_STATES['FAILED']:
if time.time() - task['completion_ts'] < 3600 * 4:
# task failed, so we'll keep the VM image around for 4 hours
# for debugging purposes
continue
ret = self.cleanupVM(vm_name)
if ret:
# successfully cleaned up the VM, so remove it from the expired list
del self.expired_vms[vm_name]
def cleanupTask(self, task_id, wait=True):
ret = super(VMTaskManager, self).cleanupTask(task_id, wait)
self.macaddr_lock.acquire()
try:
if ret:
for macaddr, (vm_name, id, port) in self.macaddrs.items():
if task_id == id:
self.expired_vms[vm_name] = self.session.getTaskInfo(task_id)
del self.macaddrs[macaddr]
self.logger.info('unregistered MAC address %s', macaddr)
break
return ret
finally:
self.macaddr_lock.release()
def shutdown(self):
self.server.server_close()
self.libvirt_conn.close()
super(VMTaskManager, self).shutdown()
####################
# Boilerplate startup code
####################
if __name__ == "__main__":
koji.add_file_logger("koji", "/var/log/kojivmd.log")
#note we're setting logging params for all of koji*
options = get_options()
if options.debug:
logging.getLogger("koji").setLevel(logging.DEBUG)
elif options.verbose:
logging.getLogger("koji").setLevel(logging.INFO)
else:
logging.getLogger("koji").setLevel(logging.WARN)
if options.debug_task:
logging.getLogger("koji.build.BaseTaskHandler").setLevel(logging.DEBUG)
if options.admin_emails:
koji.add_mail_logger("koji", options.admin_emails)
#build session options
session_opts = {}
for k in ('user', 'password', 'krbservice', 'debug_xmlrpc', 'debug',
'retry_interval', 'max_retries', 'offline_retry', 'offline_retry_interval'):
v = getattr(options, k, None)
if v is not None:
session_opts[k] = v
#start a session and login
session = koji.ClientSession(options.server, session_opts)
if os.path.isfile(options.cert):
try:
# authenticate using SSL client certificates
session.ssl_login(options.cert, options.ca,
options.serverca)
except koji.AuthError, e:
quit("Error: Unable to log in: %s" % e)
except xmlrpclib.ProtocolError:
quit("Error: Unable to connect to server %s" % (options.server))
elif options.user:
try:
# authenticate using user/password
session.login()
except koji.AuthError:
quit("Error: Unable to log in. Bad credentials?")
except xmlrpclib.ProtocolError:
quit("Error: Unable to connect to server %s" % (options.server))
elif sys.modules.has_key('krbV'):
krb_principal = options.krb_principal
if krb_principal is None:
krb_principal = options.host_principal_format % socket.getfqdn()
try:
session.krb_login(principal=krb_principal,
keytab=options.keytab,
ccache=options.ccache)
except krbV.Krb5Error, e:
quit("Kerberos authentication failed: '%s' (%s)" % (e.args[1], e.args[0]))
except socket.error, e:
quit("Could not connect to Kerberos authentication service: '%s'" % e.args[1])
else:
quit("No username/password supplied and Kerberos missing or not configured")
#make session exclusive
try:
session.exclusiveSession(force=options.force_lock)
except koji.AuthLockError:
quit("Error: Unable to get lock. Trying using --force-lock")
if not session.logged_in:
quit("Error: Unknown login error")
#make sure it works
try:
ret = session.echo("OK")
except xmlrpclib.ProtocolError:
quit("Error: Unable to connect to server %s" % (options.server))
if ret != ["OK"]:
quit("Error: incorrect server response: %r" % (ret))
# run main
if options.daemon:
#detach
koji.daemonize()
main(options, session)
elif not options.skip_main:
koji.add_stderr_logger("koji")
main(options, session)
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