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shared.py
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shared.py
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#!/usr/bin/python
#
# shared.py - common functions, classes, and variables for Vcycle
#
# Andrew McNab, University of Manchester.
# Copyright (c) 2013-5. All rights reserved.
#
# Redistribution and use in source and binary forms, with or
# without modification, are permitted provided that the following
# conditions are met:
#
# o Redistributions of source code must retain the above
# copyright notice, this list of conditions and the following
# disclaimer.
# o Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials
# provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
# CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
# INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
# TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
# ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# Contacts: [email protected] http://www.gridpp.ac.uk/vcycle/
#
import pprint
import os
import re
import sys
import stat
import glob
import time
import json
import shutil
import string
import pycurl
import urllib
import random
import base64
import StringIO
import tempfile
import calendar
import collections
import ConfigParser
import xml.etree.cElementTree
import vcycle.vacutils
class VcycleError(Exception):
pass
vcycleVersion = None
spaces = None
maxWallclockSeconds = 0
class MachineState:
#
# not listed -> starting
# starting -> failed or running or shutdown (if we miss the time when running)
# running -> shutdown
# shutdown -> deleting
# deleting -> not listed or failed
#
# random OpenStack unreliability can require transition to failed at any time
# stopped file created when machine first seen in shutdown, deleting, or failed state
#
unknown, shutdown, starting, running, deleting, failed = ('Unknown', 'Shut down', 'Starting', 'Running', 'Deleting', 'Failed')
class Machine:
def __init__(self, name, spaceName, state, ip, createdTime, startedTime, updatedTime, uuidStr, machinetypeName):
# Store values from api-specific calling function
self.name = name
self.spaceName = spaceName
self.state = state
self.ip = ip
self.updatedTime = updatedTime
self.uuidStr = uuidStr
self.machinetypeName = machinetypeName
if createdTime:
self.createdTime = createdTime
else:
try:
# Try to recreate from created file
self.createdTime = int(open('/var/lib/vcycle/machines/' + name + '/created', 'r').readline())
except:
pass
if startedTime:
self.startedTime = startedTime
else:
try:
# Try to recreate from started file
self.startedTime = int(open('/var/lib/vcycle/machines/' + name + '/started', 'r').readline())
except:
if self.state == MachineState.running:
# If startedTime not recorded, then must just have started
self.startedTime = int(time.time())
self.updatedTime = self.createdTime
else:
self.startedTime = None
if not self.updatedTime:
try:
# Try to recreate from updated file
self.updatedTime = int(open('/var/lib/vcycle/machines/' + name + '/updated', 'r').readline())
except:
pass
if not machinetypeName:
# Get machinetype name saved when we requested the machine
try:
f = open('/var/lib/vcycle/machines/' + name + '/machinetype_name', 'r')
except:
pass
else:
self.machinetypeName = f.read().strip()
f.close()
try:
self.hs06 = float(open('/var/lib/vcycle/machines/' + name + '/machinefeatures/hs06', 'r').read().strip())
except:
self.hs06 = 1.0
try:
spaces[self.spaceName].totalMachines += 1
spaces[self.spaceName].machinetypes[self.machinetypeName].totalMachines += 1
if spaces[self.spaceName].machinetypes[self.machinetypeName].target_share > 0.0:
spaces[self.spaceName].machinetypes[self.machinetypeName].weightedMachines += (self.hs06 / spaces[self.spaceName].machinetypes[self.machinetypeName].target_share)
except:
pass
if self.state == MachineState.running:
try:
spaces[self.spaceName].runningMachines += 1
spaces[self.spaceName].machinetypes[self.machinetypeName].runningMachines += 1
except:
pass
try:
if self.state == MachineState.starting or \
(self.state == MachineState.running and \
((int(time.time()) - startedTime) < spaces[self.spaceName].machinetypes[self.machinetypeName].fizzle_seconds)):
spaces[self.spaceName].machinetypes[self.machinetypeName].notPassedFizzle += 1
except:
pass
if os.path.isdir('/var/lib/vcycle/machines/' + name):
self.managedHere = True
else:
# Not managed by this Vcycle instance
self.managedHere = False
return
# Record when the machine started (rather than just being created)
if self.startedTime and not os.path.isfile('/var/lib/vcycle/machines/' + name + '/started'):
vcycle.vacutils.createFile('/var/lib/vcycle/machines/' + name + '/started', str(self.startedTime), 0600, '/var/lib/vcycle/tmp')
vcycle.vacutils.createFile('/var/lib/vcycle/machines/' + name + '/updated', str(self.updatedTime), 0600, '/var/lib/vcycle/tmp')
try:
self.deletedTime = int(open('/var/lib/vcycle/machines/' + name + '/deleted', 'r').read().strip())
except:
self.deletedTime = None
# Set heartbeat time if available
self.setHeartbeatTime()
# Check if the machine already has a stopped timestamp
try:
self.stoppedTime = int(open('/var/lib/vcycle/machines/' + name + '/stopped', 'r').read())
except:
if self.state == MachineState.shutdown or self.state == MachineState.failed or self.state == MachineState.deleting:
# Record that we have seen the machine in a stopped state for the first time
# updateTime has the last transition time, presumably to being stopped.
# This is certainly a better estimate than using time.time()?
self.stoppedTime = updatedTime
vcycle.vacutils.createFile('/var/lib/vcycle/machines/' + name + '/stopped', str(self.stoppedTime), 0600, '/var/lib/vcycle/tmp')
# Record the shutdown message if available
self.setShutdownMessage()
if self.shutdownMessage:
vcycle.vacutils.logLine('Machine ' + name + ' shuts down with message "' + self.shutdownMessage + '"')
try:
shutdownCode = int(self.shutdownMessage.split(' ')[0])
except:
shutdownCode = None
else:
shutdownCode = None
if self.machinetypeName:
# Store last abort time for stopped machines, based on shutdown message code
if shutdownCode and \
(shutdownCode >= 300) and \
(shutdownCode <= 699) and \
(self.stoppedTime > spaces[self.spaceName].machinetypes[self.machinetypeName].lastAbortTime):
vcycle.vacutils.logLine('Set ' + self.spaceName + ' ' + self.machinetypeName + ' lastAbortTime ' + str(self.stoppedTime) +
' due to ' + name + ' shutdown message')
spaces[self.spaceName].machinetypes[self.machinetypeName].setLastAbortTime(self.stoppedTime)
elif self.startedTime and \
(self.stoppedTime > spaces[self.spaceName].machinetypes[self.machinetypeName].lastAbortTime) and \
((self.stoppedTime - self.startedTime) < spaces[self.spaceName].machinetypes[self.machinetypeName].fizzle_seconds):
# Store last abort time for stopped machines, based on fizzle_seconds
vcycle.vacutils.logLine('Set ' + self.spaceName + ' ' + self.machinetypeName + ' lastAbortTime ' + str(self.stoppedTime) +
' due to ' + name + ' fizzle')
spaces[self.spaceName].machinetypes[self.machinetypeName].setLastAbortTime(self.stoppedTime)
if self.startedTime and shutdownCode and (shutdownCode / 100) == 3:
vcycle.vacutils.logLine('For ' + self.spaceName + ':' + self.machinetypeName + ' minimum fizzle_seconds=' +
str(self.stoppedTime - self.startedTime) + ' ?')
self.writeApel()
else:
self.stoppedTime = None
if self.startedTime:
logStartedTimeStr = str(self.startedTime - self.createdTime) + 's'
else:
logStartedTimeStr = '-'
if self.updatedTime:
logUpdatedTimeStr = str(self.updatedTime - self.createdTime) + 's'
else:
logUpdatedTimeStr = '-'
if self.stoppedTime:
logStoppedTimeStr = str(self.stoppedTime - self.createdTime) + 's'
else:
logStoppedTimeStr = '-'
if self.heartbeatTime:
logHeartbeatTimeStr = str(int(time.time()) - self.heartbeatTime) + 's'
else:
logHeartbeatTimeStr = '-'
vcycle.vacutils.logLine('= ' + name + ' in ' +
str(self.spaceName) + ':' +
str(self.machinetypeName) + ' ' +
self.ip + ' ' +
self.state + ' ' +
time.strftime("%b %d %H:%M:%S ", time.localtime(self.createdTime)) +
logStartedTimeStr + ':' +
logUpdatedTimeStr + ':' +
logStoppedTimeStr + ':' +
logHeartbeatTimeStr
)
def getFileContents(self, fileName):
# Get the contents of a file for this machine
try:
return open('/var/lib/vcycle/machines/' + self.name + '/' + fileName, 'r').read().strip()
except:
return None
def setFileContents(self, fileName, contents):
# Set the contents of a file for the given machine
open('/var/lib/vcycle/machines/' + self.name + '/' + fileName, 'w').write(contents)
def writeApel(self):
# If the VM just ran for fizzle_seconds, then we don't log it
try:
if (self.stoppedTime - self.startedTime) < spaces[self.spaceName].machinetypes[self.machinetypeName].fizzle_seconds:
return
except:
return
nowTime = time.localtime()
userDN = ''
for component in self.spaceName.split('.'):
userDN = '/DC=' + component + userDN
if hasattr(spaces[self.spaceName].machinetypes[self.machinetypeName], 'accounting_fqan'):
userFQANField = 'FQAN: ' + spaces[self.spaceName].machinetypes[self.machinetypeName].accounting_fqan + '\n'
else:
userFQANField = ''
if hasattr(spaces[self.spaceName].machinetypes[self.machinetypeName], 'mb'):
memoryField = 'MemoryReal: ' + str(spaces[self.spaceName].machinetypes[self.machinetypeName].mb * 1024) + '\n' \
'MemoryVirtual: ' + str(spaces[self.spaceName].machinetypes[self.machinetypeName].mb * 1024) + '\n'
else:
memoryField = ''
# Always true now?
if hasattr(spaces[self.spaceName].machinetypes[self.machinetypeName], 'cpus'):
cpusField = 'Processors: ' + str(spaces[self.spaceName].machinetypes[self.machinetypeName].cpus) + '\n'
else:
cpusField = ''
if spaces[self.spaceName].gocdb_sitename:
tmpGocdbSitename = spaces[self.spaceName].gocdb_sitename
else:
tmpGocdbSitename = self.spaceName
mesg = ('APEL-individual-job-message: v0.3\n' +
'Site: ' + tmpGocdbSitename + '\n' +
'SubmitHost: ' + self.spaceName + '/vcycle-' + os.uname()[1] + '\n' +
'LocalJobId: ' + self.uuidStr + '\n' +
'LocalUserId: ' + self.name + '\n' +
'Queue: ' + self.machinetypeName + '\n' +
'GlobalUserName: ' + userDN + '\n' +
userFQANField +
'WallDuration: ' + str(self.stoppedTime - self.startedTime) + '\n' +
# Can we do better for CpuDuration???
'CpuDuration: ' + str(self.stoppedTime - self.startedTime) + '\n' +
cpusField +
'NodeCount: 1\n' +
'InfrastructureDescription: APEL-VCYCLE\n' +
'InfrastructureType: grid\n' +
'StartTime: ' + str(self.startedTime) + '\n' +
'EndTime: ' + str(self.stoppedTime) + '\n' +
memoryField +
'ServiceLevelType: HEPSPEC\n' +
'ServiceLevel: ' + str(self.hs06) + '\n' +
'%%\n')
fileName = time.strftime('%H%M%S', nowTime) + str(time.time() % 1)[2:][:8]
try:
os.makedirs(time.strftime('/var/lib/vcycle/apel-archive/%Y%m%d', nowTime), stat.S_IRUSR|stat.S_IWUSR|stat.S_IXUSR|stat.S_IRGRP|stat.S_IXGRP|stat.S_IROTH|stat.S_IXOTH)
except:
pass
try:
vcycle.vacutils.createFile(time.strftime('/var/lib/vcycle/apel-archive/%Y%m%d/', nowTime) + fileName, mesg, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH, '/var/lib/vcycle/tmp')
except:
vcycle.vacutils.logLine('Failed creating ' + time.strftime('/var/lib/vcycle/apel-archive/%Y%m%d/', nowTime) + fileName)
return
if spaces[self.spaceName].gocdb_sitename:
# We only write to apel-outgoing if gocdb_sitename is set
try:
os.makedirs(time.strftime('/var/lib/vcycle/apel-outgoing/%Y%m%d', nowTime), stat.S_IRUSR|stat.S_IWUSR|stat.S_IXUSR|stat.S_IRGRP|stat.S_IXGRP|stat.S_IROTH|stat.S_IXOTH)
except:
pass
try:
vcycle.vacutils.createFile(time.strftime('/var/lib/vcycle/apel-outgoing/%Y%m%d/', nowTime) + fileName, mesg, stat.S_IRUSR|stat.S_IWUSR|stat.S_IRGRP|stat.S_IROTH, '/var/lib/vcycle/tmp')
except:
vcycle.vacutils.logLine('Failed creating ' + time.strftime('/var/lib/vcycle/apel-outgoing/%Y%m%d/', nowTime) + fileName)
return
def setShutdownMessage(self):
# Easy if a local file rather than remote
if not spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url:
try:
self.shutdownMessage = open('/var/lib/vcycle/machines/' + self.name + '/joboutputs/shutdown_message', 'r').read().strip()
except:
self.shutdownMessage = None
return
# Remote URL must be https://
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url[0:8] == 'https://':
buffer = StringIO.StringIO()
url = str(spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url + self.name + '/shutdown_message')
spaces[self.spaceName].curl.unsetopt(pycurl.CUSTOMREQUEST)
try:
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert[0] == '/':
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert)
else:
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, '/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/files/' + spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert)
except:
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, '')
try:
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key[0] == '/':
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key)
else:
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, '/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/files/' + spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key)
except:
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, '')
spaces[self.spaceName].curl.setopt(pycurl.URL, url)
spaces[self.spaceName].curl.setopt(pycurl.NOBODY, 0)
spaces[self.spaceName].curl.setopt(pycurl.WRITEFUNCTION, buffer.write)
spaces[self.spaceName].curl.setopt(pycurl.USERAGENT, 'Vcycle ' + vcycleVersion)
spaces[self.spaceName].curl.setopt(pycurl.TIMEOUT, 30)
spaces[self.spaceName].curl.setopt(pycurl.FOLLOWLOCATION, True)
spaces[self.spaceName].curl.setopt(pycurl.SSL_VERIFYPEER, 1)
spaces[self.spaceName].curl.setopt(pycurl.SSL_VERIFYHOST, 2)
if os.path.isdir('/etc/grid-security/certificates'):
spaces[self.spaceName].curl.setopt(pycurl.CAPATH, '/etc/grid-security/certificates')
else:
vcycle.vacutils.logLine('/etc/grid-security/certificates directory does not exist - relying on curl bundle of commercial CAs')
try:
spaces[self.spaceName].curl.perform()
except Exception as e:
vcycle.vacutils.logLine('Failed to read ' + self.remote_joboutputs_url + self.name + '/shutdown_message (' + str(e) + ')')
self.shutdownMessage = None
return
try:
self.shutdownMessage = buffer.getvalue().strip()
if self.shutdownMessage == '':
self.shutdownMessage = None
except:
self.shutdownMessage = None
return
vcycle.vacutils.logLine('Problem with remote_joboutputs_url = ' + self.remote_joboutputs_url)
def setHeartbeatTime(self):
# Easy if a local file rather than remote
if not spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url:
try:
self.heartbeatTime = int(os.stat('/var/lib/vcycle/machines/' + self.name + '/joboutputs/' + spaces[self.spaceName].machinetypes[self.machinetypeName].heartbeat_file).st_ctime)
except:
self.heartbeatTime = None
return
# Remote URL must be https://
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url[0:8] != 'https://':
vcycle.vacutils.logLine('Problem with remote_joboutputs_url = ' + self.remote_joboutputs_url)
else:
buffer = StringIO.StringIO()
url = str(spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_url + self.name + '/' + spaces[self.spaceName].machinetypes[self.machinetypeName].heartbeat_file)
spaces[self.spaceName].curl.unsetopt(pycurl.CUSTOMREQUEST)
try:
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert[0] == '/':
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert)
else:
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, '/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/files/' + spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_cert)
except:
spaces[self.spaceName].curl.setopt(pycurl.SSLCERT, '')
try:
if spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key[0] == '/':
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key)
else:
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, '/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/files/' + spaces[self.spaceName].machinetypes[self.machinetypeName].remote_joboutputs_key)
except:
spaces[self.spaceName].curl.setopt(pycurl.SSLKEY, '')
spaces[self.spaceName].curl.setopt(pycurl.URL, url)
spaces[self.spaceName].curl.setopt(pycurl.NOBODY, 1)
spaces[self.spaceName].curl.setopt(pycurl.WRITEFUNCTION, buffer.write)
spaces[self.spaceName].curl.setopt(pycurl.USERAGENT, 'Vcycle ' + vcycleVersion)
spaces[self.spaceName].curl.setopt(pycurl.TIMEOUT, 30)
spaces[self.spaceName].curl.setopt(pycurl.FOLLOWLOCATION, True)
spaces[self.spaceName].curl.setopt(pycurl.SSL_VERIFYPEER, 1)
spaces[self.spaceName].curl.setopt(pycurl.SSL_VERIFYHOST, 2)
spaces[self.spaceName].curl.setopt(pycurl.OPT_FILETIME, 1)
if os.path.isdir('/etc/grid-security/certificates'):
spaces[self.spaceName].curl.setopt(pycurl.CAPATH, '/etc/grid-security/certificates')
else:
vcycle.vacutils.logLine('/etc/grid-security/certificates directory does not exist - relying on curl bundle of commercial CAs')
try:
spaces[self.spaceName].curl.perform()
except Exception as e:
vcycle.vacutils.logLine('Failed to read ' + url + ' (' + str(e) + ')')
else:
if spaces[self.spaceName].curl.getinfo(pycurl.RESPONSE_CODE) == 200:
try:
heartbeatTime = float(spaces[self.spaceName].curl.getinfo(pycurl.INFO_FILETIME))
if heartbeatTime > 0.0:
# Save the time we got from the remote webserver
try:
open('/var/lib/vcycle/machines/' + self.name + '/vm-heartbeat', 'a')
os.utime('/var/lib/vcycle/machines/' + self.name + '/vm-heartbeat', (time.time(), heartbeatTime))
except:
pass
except:
pass
elif spaces[self.spaceName].curl.getinfo(pycurl.RESPONSE_CODE) == 0:
vcycle.vacutils.logLine('Fetching ' + url + ' fails with curl error ' + str(spaces[self.spaceName].curl.errstr()))
elif spaces[self.spaceName].curl.getinfo(pycurl.RESPONSE_CODE) != 404:
vcycle.vacutils.logLine('Fetching ' + url + ' fails with HTTP response code ' + str(spaces[self.spaceName].curl.getinfo(pycurl.RESPONSE_CODE)))
try:
# Use the last saved time, possibly from a previous call to this method
self.heartbeatTime = int(os.stat('/var/lib/vcycle/machines/' + self.name + '/vm-heartbeat').st_mtime)
except:
self.heartbeatTime = None
class Machinetype:
def __init__(self, spaceName, machinetypeName, parser, machinetypeSectionName):
global maxWallclockSeconds
self.spaceName = spaceName
self.machinetypeName = machinetypeName
# Recreate lastAbortTime (must be set/updated with setLastAbortTime() to create file)
try:
f = open('/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/last_abort_time', 'r')
except:
self.lastAbortTime = 0
else:
self.lastAbortTime = int(f.read().strip())
f.close()
# vcycle.vacutils.logLine('At ' + str(int(time.time())) + ' lastAbortTime for ' + spaceName + ':' + machinetypeName + ' set to ' + str(self.lastAbortTime))
try:
self.root_image = parser.get(machinetypeSectionName, 'root_image')
except Exception as e:
raise VcycleError('root_image is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.cernvm_signing_dn = parser.get(machinetypeSectionName, 'cernvm_signing_dn').strip()
except:
self.cernvm_signing_dn = None
try:
self.flavor_name = parser.get(machinetypeSectionName, 'flavor_name')
except Exception as e:
raise VcycleError('flavor_name is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.root_public_key = parser.get(machinetypeSectionName, 'root_public_key')
except:
self.root_public_key = None
try:
if parser.has_option(machinetypeSectionName, 'max_machines'):
self.max_machines = int(parser.get(machinetypeSectionName, 'max_machines'))
else:
self.max_machines = None
except Exception as e:
raise VcycleError('Failed to parse max_machines in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.backoff_seconds = int(parser.get(machinetypeSectionName, 'backoff_seconds'))
except Exception as e:
raise VcycleError('backoff_seconds is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.fizzle_seconds = int(parser.get(machinetypeSectionName, 'fizzle_seconds'))
except Exception as e:
raise VcycleError('fizzle_seconds is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
if parser.has_option(machinetypeSectionName, 'max_wallclock_seconds'):
self.max_wallclock_seconds = int(parser.get(machinetypeSectionName, 'max_wallclock_seconds'))
else:
self.max_wallclock_seconds = 86400
if self.max_wallclock_seconds > maxWallclockSeconds:
maxWallclockSeconds = self.max_wallclock_seconds
except Exception as e:
raise VcycleError('max_wallclock_seconds is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.x509dn = parser.get(machinetypeSectionName, 'x509dn')
except:
self.x509dn = None
# The heartbeat and joboutputs options should cause errors if x509dn isn't given!
try:
self.heartbeat_file = parser.get(machinetypeSectionName, 'heartbeat_file')
except:
self.heartbeat_file = None
try:
if parser.has_option(machinetypeSectionName, 'heartbeat_seconds'):
self.heartbeat_seconds = int(parser.get(machinetypeSectionName, 'heartbeat_seconds'))
else:
self.heartbeat_seconds = None
except Exception as e:
raise VcycleError('Failed to parse heartbeat_seconds in [' + machinetypeSectionName + '] (' + str(e) + ')')
if parser.has_option(machinetypeSectionName, 'log_machineoutputs') and \
parser.get(machinetypeSectionName, 'log_machineoutputs').strip().lower() == 'true':
self.log_joboutputs = True
print 'log_machineoutputs is deprecated. Please use log_joboutputs'
elif parser.has_option(machinetypeSectionName, 'log_joboutputs') and \
parser.get(machinetypeSectionName, 'log_joboutputs').strip().lower() == 'true':
self.log_joboutputs = True
else:
self.log_joboutputs = False
if parser.has_option(machinetypeSectionName, 'machineoutputs_days'):
print 'machineoutputs_days is deprecated. Please use joboutputs_days'
try:
if parser.has_option(machinetypeSectionName, 'joboutputs_days'):
self.joboutputs_days = float(parser.get(machinetypeSectionName, 'joboutputs_days'))
else:
self.joboutputs_days = 3.0
except Exception as e:
raise VcycleError('Failed to parse joboutputs_days in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
self.remote_joboutputs_url = parser.get(machinetypeSectionName, 'remote_joboutputs_url').rstrip('/') + '/'
except:
self.remote_joboutputs_url = None
if parser.has_option(machinetypeSectionName, 'remote_joboutputs_cert') and \
not parser.has_option(machinetypeSectionName, 'remote_joboutputs_key') :
raise VcycleError('remote_joboutputs_cert given but remote_joboutputs_key missing (they can point to the same file if necessary)')
elif not parser.has_option(machinetypeSectionName, 'remote_joboutputs_cert') and \
parser.has_option(machinetypeSectionName, 'remote_joboutputs_key') :
raise VcycleError('remote_joboutputs_key given but remote_joboutputs_cert missing (they can point to the same file if necessary)')
elif parser.has_option(machinetypeSectionName, 'remote_joboutputs_cert') and \
parser.has_option(machinetypeSectionName, 'remote_joboutputs_key') :
self.remote_joboutputs_cert = parser.get(machinetypeSectionName, 'remote_joboutputs_cert')
self.remote_joboutputs_key = parser.get(machinetypeSectionName, 'remote_joboutputs_key')
else:
self.remote_joboutputs_cert = None
self.remote_joboutputs_key = None
if parser.has_option(machinetypeSectionName, 'accounting_fqan'):
self.accounting_fqan = parser.get(machinetypeSectionName, 'accounting_fqan').strip()
try:
self.hs06 = parser.get(machinetypeSectionName, 'hs06')
except:
self.hs06 = 1.0
try:
self.cpus = int(parser.get(machinetypeSectionName, 'cpu_per_machine'))
except:
self.cpus = 1
try:
self.user_data = parser.get(machinetypeSectionName, 'user_data')
except Exception as e:
raise VcycleError('user_data is required in [' + machinetypeSectionName + '] (' + str(e) + ')')
try:
if parser.has_option(machinetypeSectionName, 'target_share'):
self.target_share = float(parser.get(machinetypeSectionName, 'target_share'))
else:
self.target_share = 0.0
except Exception as e:
raise VcycleError('Failed to parse target_share in [' + machinetypeSectionName + '] (' + str(e) + ')')
self.options = {}
for (oneOption, oneValue) in parser.items(machinetypeSectionName):
if (oneOption[0:17] == 'user_data_option_') or (oneOption[0:15] == 'user_data_file_'):
if string.translate(oneOption, None, '0123456789abcdefghijklmnopqrstuvwxyz_') != '':
raise VcycleError('Name of user_data_xxx (' + oneOption + ') must only contain a-z 0-9 and _')
else:
self.options[oneOption] = oneValue
if parser.has_option(machinetypeSectionName, 'user_data_proxy_cert') and \
not parser.has_option(machinetypeSectionName, 'user_data_proxy_key') :
raise VcycleError('user_data_proxy_cert given but user_data_proxy_key missing (they can point to the same file if necessary)')
elif not parser.has_option(machinetypeSectionName, 'user_data_proxy_cert') and \
parser.has_option(machinetypeSectionName, 'user_data_proxy_key') :
raise VcycleError('user_data_proxy_key given but user_data_proxy_cert missing (they can point to the same file if necessary)')
elif parser.has_option(machinetypeSectionName, 'user_data_proxy_cert') and \
parser.has_option(machinetypeSectionName, 'user_data_proxy_key') :
self.user_data_proxy_cert = parser.get(machinetypeSectionName, 'user_data_proxy_cert')
self.user_data_proxy_key = parser.get(machinetypeSectionName, 'user_data_proxy_key')
if parser.has_option(machinetypeSectionName, 'legacy_proxy') and \
parser.get(machinetypeSectionName, 'legacy_proxy').strip().lower() == 'true':
self.legacy_proxy = True
else:
self.legacy_proxy = False
# Just for this instance, so Total for this machinetype in one space
self.totalMachines = 0
self.runningMachines = 0
self.weightedMachines = 0.0
self.notPassedFizzle = 0
def setLastAbortTime(self, abortTime):
if abortTime > self.lastAbortTime:
self.lastAbortTime = abortTime
try:
os.makedirs('/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName,
stat.S_IWUSR + stat.S_IXUSR + stat.S_IRUSR + stat.S_IXGRP + stat.S_IRGRP + stat.S_IXOTH + stat.S_IROTH)
except:
pass
vcycle.vacutils.createFile('/var/lib/vcycle/spaces/' + self.spaceName + '/machinetypes/' + self.machinetypeName + '/last_abort_time',
str(abortTime), tmpDir = '/var/lib/vcycle/tmp')
def makeMachineName(self):
"""Construct a machine name including the machinetype"""
return 'vcycle-' + self.machinetypeName + '-' + ''.join(random.choice(string.ascii_lowercase + string.digits) for _ in range(10))
class BaseSpace(object):
def __init__(self, api, spaceName, parser, spaceSectionName):
self.api = api
self.spaceName = spaceName
try:
self.max_machines = int(parser.get(spaceSectionName, 'max_machines'))
except Exception as e:
raise VcycleError('max_machines is required in [space ' + spaceName + '] (' + str(e) + ')')
self.machinetypes = {}
for machinetypeSectionName in parser.sections():
try:
(sectionType, spaceTemp, machinetypeName) = machinetypeSectionName.lower().split(None,2)
except:
continue
if sectionType != 'machinetype' or spaceTemp != spaceName:
continue
if string.translate(machinetypeName, None, '0123456789abcdefghijklmnopqrstuvwxyz-') != '':
raise VcycleError('Name of machinetype in [machinetype ' + spaceName + ' ' + machinetypeName + '] can only contain a-z 0-9 or -')
try:
self.machinetypes[machinetypeName] = Machinetype(spaceName, machinetypeName, parser, machinetypeSectionName)
except Exception as e:
raise VcycleError('Failed to initialize [machinetype ' + spaceName + ' ' + machinetypeName + '] (' + str(e) + ')')
if len(self.machinetypes) < 1:
raise VcycleError('No machinetypes defined for space ' + spaceName + ' - each space must have at least one machinetype!')
# Start new curl session for this instance
self.curl = pycurl.Curl()
self.token = None
# totalMachines includes ones Vcycle doesn't manage
self.totalMachines = 0
self.runningMachines = 0
# all the Vcycle-created VMs in this space
self.machines = {}
def findMachinesWithFile(self, fileName):
# Return a list of machine names that have the given fileName
machineNames = []
pathsList = glob.glob('/var/lib/vcycle/machines/*/' + fileName)
if pathsList:
for onePath in pathsList:
machineNames.append(onePath.split('/')[5])
return machineNames
def getFileContents(self, machineName, fileName):
# Get the contents of a file for the given machine
try:
return open('/var/lib/vcycle/machines/' + machineName + '/' + fileName, 'r').read().strip()
except:
return None
def setFileContents(self, machineName, fileName, contents):
# Set the contents of a file for the given machine
open('/var/lib/vcycle/machines/' + machineName + '/' + fileName, 'w').write(contents)
def connect(self):
# Null method in case this API doesn't need a connect step
pass
def _xmlToDictRecursor(self, xmlTree):
tag = xmlTree.tag.split('}')[1]
retDict = { tag: {} }
children = list(xmlTree)
if children:
childrenLists = collections.defaultdict(list)
for recursorDict in map(self._xmlToDictRecursor, children):
for key, value in recursorDict.iteritems():
childrenLists[key].append(value)
childrenDict = {}
for key, value in childrenLists.iteritems():
# Value is always a list, so ask for value[0] even if single child
childrenDict[key] = value
retDict = { tag: childrenDict }
if xmlTree.attrib:
retDict[tag].update(('@' + key, value) for key, value in xmlTree.attrib.iteritems())
if xmlTree.text and xmlTree.text.strip():
retDict[tag]['#text'] = xmlTree.text.strip()
return retDict
def _xmlToDict(self, xmlString):
# Convert XML string to dictionary
# - Each tag below root has a list of dictionaries as its value even if length 1 (or 0!)
# - Text contained within the tag itself appears as key #text
# - Attributes of the tag appear as key @attributename
return self._xmlToDictRecursor(xml.etree.cElementTree.XML(xmlString))
def httpRequest(self,
url, # HTTP(S) URL to contact
request = None, # = jsonRequest for compatibility
jsonRequest = None, # dictionary to be converted to JSON body (overrides formRequest)
formRequest = None, # dictionary to be converted into HTML Form body, or body itself
headers = None, # request headers
verbose = False, # turn on Curl logging messages
method = None, # DELETE, otherwise always GET/POST
anyStatus = False # accept any HTTP status without exception, not just 2xx
):
# Returns dictionary: { 'headers' : HEADERS, 'response' : DICTIONARY, 'status' : CURL RESPONSE CODE }
self.curl.unsetopt(pycurl.CUSTOMREQUEST)
self.curl.setopt(pycurl.URL, str(url))
self.curl.setopt(pycurl.USERAGENT, 'Vcycle ' + vcycleVersion)
# backwards compatible
if request:
jsonRequest = request
if method and method.upper() == 'DELETE':
self.curl.setopt(pycurl.CUSTOMREQUEST, 'DELETE')
elif jsonRequest:
try:
self.curl.setopt(pycurl.POSTFIELDS, json.dumps(jsonRequest))
except Exception as e:
raise VcycleError('JSON encoding of "' + str(jsonRequest) + '" fails (' + str(e) + ')')
elif formRequest:
if isinstance(formRequest, dict):
# if formRequest is a dictionary then encode it
try:
self.curl.setopt(pycurl.POSTFIELDS, urllib.urlencode(formRequest))
except Exception as e:
raise VcycleError('Form encoding of "' + str(formRequest) + '" fails (' + str(e) + ')')
else:
# otherwise assume formRequest is already formatted
try:
self.curl.setopt(pycurl.POSTFIELDS, formRequest)
except Exception as e:
raise VcycleError('Form encoding of "' + str(formRequest) + '" fails (' + str(e) + ')')
else :
# No body, just GET and headers
self.curl.setopt(pycurl.HTTPGET, True)
outputBuffer = StringIO.StringIO()
self.curl.setopt(pycurl.WRITEFUNCTION, outputBuffer.write)
headersBuffer = StringIO.StringIO()
self.curl.setopt(pycurl.HEADERFUNCTION, headersBuffer.write)
# Set up the list of headers to send in the request
allHeaders = []
if jsonRequest:
allHeaders.append('Content-Type: application/json')
allHeaders.append('Accept: application/json')
elif formRequest:
allHeaders.append('Content-Type: application/x-www-form-urlencoded')
if headers:
allHeaders.extend(headers)
self.curl.setopt(pycurl.HTTPHEADER, allHeaders)
if verbose:
self.curl.setopt(pycurl.VERBOSE, 2)
else:
self.curl.setopt(pycurl.VERBOSE, 0)
self.curl.setopt(pycurl.TIMEOUT, 30)
self.curl.setopt(pycurl.FOLLOWLOCATION, False)
self.curl.setopt(pycurl.SSL_VERIFYPEER, 1)
self.curl.setopt(pycurl.SSL_VERIFYHOST, 2)
self.curl.setopt(pycurl.SSLVERSION, pycurl.SSLVERSION_TLSv1)
if hasattr(self, 'usercert') and hasattr(self, 'userkey') and self.usercert and self.userkey:
if self.usercert[0] == '/':
self.curl.setopt(pycurl.SSLCERT, self.usercert)
else :
self.curl.setopt(pycurl.SSLCERT, '/var/lib/vcycle/spaces/' + self.spaceName + '/' + self.usercert)
if self.userkey[0] == '/':
self.curl.setopt(pycurl.SSLKEY, self.userkey)
else :
self.curl.setopt(pycurl.SSLKEY, '/var/lib/vcycle/spaces/' + self.spaceName + '/' + self.userkey)
if os.path.isdir('/etc/grid-security/certificates'):
self.curl.setopt(pycurl.CAPATH, '/etc/grid-security/certificates')
try:
self.curl.perform()
except Exception as e:
raise VcycleError('Failed to read ' + url + ' (' + str(e) + ')')
headersBuffer.seek(0)
outputHeaders = { }
while True:
try:
oneLine = headersBuffer.readline().strip()
except:
break
if not oneLine:
break
if oneLine.startswith('HTTP/1.1 '):
# An HTTP return code, overwrite any previous code
outputHeaders['status'] = [ oneLine[9:] ]
if oneLine == 'HTTP/1.1 100 Continue':
# Silently eat the blank line
oneLine = headersBuffer.readline().strip()
else:
# Otherwise a Name: Value header
headerNameValue = oneLine.split(':',1)
# outputHeaders is a dictionary of lowercased header names
# but the values are always lists, with one or more values (if multiple headers with the same name)
if headerNameValue[0].lower() not in outputHeaders:
outputHeaders[ headerNameValue[0].lower() ] = []
outputHeaders[ headerNameValue[0].lower() ].append( headerNameValue[1].strip() )
if 'content-type' in outputHeaders and outputHeaders['content-type'][0] == 'application/json':
try:
response = json.loads(outputBuffer.getvalue())
except:
response = None
elif 'content-type' in outputHeaders and outputHeaders['content-type'][0] == 'text/xml':
try:
response = self._xmlToDict(outputBuffer.getvalue())
except:
response = None
else:
response = None
# If not a 2xx code then raise an exception unless anyStatus option given
if not anyStatus and self.curl.getinfo(pycurl.RESPONSE_CODE) / 100 != 2:
raise VcycleError('Query of ' + url + ' returns HTTP code ' + str(self.curl.getinfo(pycurl.RESPONSE_CODE)))
return { 'headers' : outputHeaders, 'response' : response, 'status' : self.curl.getinfo(pycurl.RESPONSE_CODE) }
def publishGlueStatus(self, glueVersion):
"""Write out a GLUE 2.0/2.1 JSON files describing this space's status"""
if glueVersion == '2.0':
attributePrefix = ''
jobsOrVM = 'Jobs'
elif glueVersion == '2.1':
attributePrefix = 'Cloud'
jobsOrVM = 'VM'
else:
return
# This must only be run after the scanMachines method for this space!
self.glue2 = { attributePrefix + 'ComputingService' : [ {
'CreationTime' : time.strftime('%Y-%m-%dT%H:%M:%SZ', time.gmtime()),
'ID' : 'urn:glue2:' + attributePrefix + 'ComputingService:' + self.spaceName,
'Name' : 'Vcycle',
'Type' : 'uk.ac.gridpp.vcycle',
'QualityLevel' : 'production',
'Running' + jobsOrVM : self.runningMachines,
'Total' + jobsOrVM : self.totalMachines
} ]
}
computingShares = []
mappingPolicies = []
executionEnvironments = []
cloudComputeInstanceTypes = []