def testJobReadWriteAndDelete(self):
jobDir = os.path.join(os.getcwd(), "testJobDir")
os.mkdir(jobDir) #If directory already exists then the test will fail
command = "by your command"
memory = 2^32
cpu = 1
tryCount = 100
for i in xrange(10):
startTime = time.time()
for j in xrange(100):
j = Job(command, memory, cpu, tryCount, jobDir)
self.assertEquals(j.remainingRetryCount, tryCount)
self.assertEquals(j.jobDir, jobDir)
self.assertEquals(j.children, [])
self.assertEquals(j.followOnCommands, [ (command, memory, cpu, 0)])
self.assertEquals(j.messages, [])
j.write()
j = Job.read(j.getJobFileName())
self.assertEquals(j.remainingRetryCount, tryCount)
self.assertEquals(j.jobDir, jobDir)
self.assertEquals(j.children, [])
self.assertEquals(j.followOnCommands, [ (command, memory, cpu, 0)])
self.assertEquals(j.messages, [])
self.assertTrue(os.path.exists(j.getJobFileName()))
j.delete()
self.assertTrue(not os.path.exists(j.getJobFileName()))
print "It took %f seconds to load/unload jobs" % (time.time() - startTime) #We've just used it for benchmarking, so far
#Would be good to extend this trivial test
system("rm -rf %s" % jobDir)
def testJobUpdate(self):
jobDir = os.path.join(os.getcwd(), "testJobDir")
os.mkdir(jobDir) #If directory already exists then the test will fail
command = "by your command"
memory = 2^32
cpu = 1
tryCount = 100
for i in xrange(40):
startTime = time.time()
j = Job(command, memory, cpu, tryCount, jobDir)
childNumber = random.choice(range(20))
for k in xrange(childNumber):
j.children.append((command, memory, cpu))
self.assertEquals(len(j.children), childNumber)
j.update(tryCount=tryCount, depth=0)
j = Job.read(j.getJobFileName())
self.assertEquals(len(j.children) + len(j.followOnCommands), childNumber + 1)
for childJobFile, memory, cpu in j.children:
cJ = Job.read(childJobFile)
self.assertEquals(cJ.remainingRetryCount, tryCount)
#self.assertEquals(cJ.jobDir, os.path.split(cJ)[0])
self.assertEquals(cJ.children, [])
self.assertEquals(cJ.followOnCommands, [ (command, memory, cpu, 0)])
self.assertEquals(cJ.messages, [])
self.assertTrue(os.path.exists(cJ.getJobFileName()))
cJ.delete()
self.assertTrue(not os.path.exists(cJ.getJobFileName()))
self.assertEquals(os.listdir(jobDir), [ "job" ])
j.delete()
print "It took %f seconds to update jobs" % (time.time() - startTime) #We've just used it for benchmarking, so far
system("rm -rf %s" % jobDir)
def createFirstJob(command, config, memory=None, cpu=None, time=sys.maxint):
"""Adds the first job to to the jobtree.
"""
logger.info("Adding the first job")
if memory == None or memory == sys.maxint:
memory = float(config.attrib["default_memory"])
if cpu == None or cpu == sys.maxint:
cpu = float(config.attrib["default_cpu"])
job = Job(command=command, memory=memory, cpu=cpu,
tryCount=int(config.attrib["try_count"]), jobDir=getJobFileDirName(config.attrib["job_tree"]))
job.write()
logger.info("Added the first job")
def parseJobFile(absFileName):
try:
job = Job.read(absFileName)
return job
except:
logger.info("Encountered error while parsing job file %s, so we will ignore it" % absFileName)
return None
def parseJobFile(absFileName):
try:
job = Job.read(absFileName)
return job
except:
logger.info(
"Encountered error while parsing job file %s, so we will ignore it"
% absFileName)
return None
def main():
sys.path.append(sys.argv[1])
sys.argv.remove(sys.argv[1])
#Now we can import all the stuff..
from sonLib.bioio import getBasicOptionParser
from sonLib.bioio import parseBasicOptions
from sonLib.bioio import logger
from sonLib.bioio import addLoggingFileHandler, redirectLoggerStreamHandlers
from sonLib.bioio import setLogLevel
from sonLib.bioio import getTotalCpuTime, getTotalCpuTimeAndMemoryUsage
from sonLib.bioio import getTempDirectory
from sonLib.bioio import makeSubDir
from jobTree.src.job import Job
from jobTree.src.master import getEnvironmentFileName, getConfigFileName, listChildDirs, getTempStatsFile, setupJobAfterFailure
from sonLib.bioio import system
##########################################
#Input args
##########################################
jobTreePath = sys.argv[1]
jobFile = sys.argv[2]
##########################################
#Load the environment for the job
##########################################
#First load the environment for the job.
fileHandle = open(getEnvironmentFileName(jobTreePath), 'r')
environment = cPickle.load(fileHandle)
fileHandle.close()
for i in environment:
if i not in ("TMPDIR", "TMP", "HOSTNAME", "HOSTTYPE"):
os.environ[i] = environment[i]
# sys.path is used by __import__ to find modules
if "PYTHONPATH" in environment:
for e in environment["PYTHONPATH"].split(':'):
if e != '':
sys.path.append(e)
#os.environ = environment
#os.putenv(key, value)
##########################################
#Setup the temporary directories.
##########################################
#Dir to put all the temp files in.
localSlaveTempDir = getTempDirectory()
localTempDir = makeSubDir(os.path.join(localSlaveTempDir, "localTempDir"))
##########################################
#Setup the logging
##########################################
#Setup the logging
tempSlaveLogFile = os.path.join(localSlaveTempDir, "slave_log.txt")
slaveHandle = open(tempSlaveLogFile, 'w')
for handler in list(logger.handlers): #Remove old handlers
logger.removeHandler(handler)
logger.addHandler(logging.StreamHandler(slaveHandle))
origStdErr = sys.stderr
origStdOut = sys.stdout
sys.stderr = slaveHandle
sys.stdout = slaveHandle
##########################################
#Parse input files
##########################################
config = ET.parse(getConfigFileName(jobTreePath)).getroot()
setLogLevel(config.attrib["log_level"])
job = Job.read(jobFile)
job.messages = [] #This is the only way to stop messages logging twice, as are read only in the master
job.children = []
if os.path.exists(job.getLogFileName()): #This cleans the old log file
os.remove(job.getLogFileName())
logger.info("Parsed arguments and set up logging")
#Try loop for slave logging
##########################################
#Setup the stats, if requested
##########################################
if config.attrib.has_key("stats"):
startTime = time.time()
startClock = getTotalCpuTime()
stats = ET.Element("slave")
else:
stats = None
##########################################
#The max time
##########################################
maxTime = float(config.attrib["job_time"])
assert maxTime > 0.0
assert maxTime < sys.maxint
##########################################
#Slave log file trapped from here on in
##########################################
slaveFailed = False
try:
##########################################
#The next job
##########################################
def globalTempDirName(job, depth):
return job.getGlobalTempDirName() + str(depth)
command, memoryAvailable, cpuAvailable, depth = job.followOnCommands[-1]
defaultMemory = int(config.attrib["default_memory"])
defaultCpu = int(config.attrib["default_cpu"])
assert len(job.children) == 0
startTime = time.time()
while True:
job.followOnCommands.pop()
##########################################
#Global temp dir
##########################################
globalTempDir = makeSubDir(globalTempDirName(job, depth))
i = 1
while os.path.isdir(globalTempDirName(job, depth+i)):
system("rm -rf %s" % globalTempDirName(job, depth+i))
i += 1
##########################################
#Old children, not yet deleted
#
#These may exist because of the lazy cleanup
#we do
##########################################
for childDir in listChildDirs(job.jobDir):
logger.debug("Cleaning up old child %s" % childDir)
system("rm -rf %s" % childDir)
##########################################
#Run the job
##########################################
if command != "": #Not a stub
if command[:11] == "scriptTree ":
##########################################
#Run the target
##########################################
loadStack(command).execute(job=job, stats=stats,
localTempDir=localTempDir, globalTempDir=globalTempDir,
memoryAvailable=memoryAvailable, cpuAvailable=cpuAvailable,
defaultMemory=defaultMemory, defaultCpu=defaultCpu, depth=depth)
else: #Is another command
system(command)
##########################################
#Cleanup/reset a successful job/checkpoint
##########################################
job.remainingRetryCount = int(config.attrib["try_count"])
system("rm -rf %s/*" % (localTempDir))
job.update(depth=depth, tryCount=job.remainingRetryCount)
##########################################
#Establish if we can run another job
##########################################
if time.time() - startTime > maxTime:
logger.info("We are breaking because the maximum time the job should run for has been exceeded")
break
#Deal with children
if len(job.children) >= 1: #We are going to have to return to the parent
logger.info("No more jobs can run in series by this slave, its got %i children" % len(job.children))
break
if len(job.followOnCommands) == 0:
logger.info("No more jobs can run by this slave as we have exhausted the follow ons")
break
#Get the next job and see if we have enough cpu and memory to run it..
command, memory, cpu, depth = job.followOnCommands[-1]
if memory > memoryAvailable:
logger.info("We need more memory for the next job, so finishing")
break
if cpu > cpuAvailable:
logger.info("We need more cpus for the next job, so finishing")
break
logger.info("Starting the next job")
##########################################
#Finish up the stats
##########################################
if stats != None:
totalCpuTime, totalMemoryUsage = getTotalCpuTimeAndMemoryUsage()
stats.attrib["time"] = str(time.time() - startTime)
stats.attrib["clock"] = str(totalCpuTime - startClock)
stats.attrib["memory"] = str(totalMemoryUsage)
tempStatsFile = getTempStatsFile(jobTreePath)
fileHandle = open(tempStatsFile + ".new", "w")
ET.ElementTree(stats).write(fileHandle)
fileHandle.close()
os.rename(tempStatsFile + ".new", tempStatsFile) #This operation is atomic
logger.info("Finished running the chain of jobs on this node, we ran for a total of %f seconds" % (time.time() - startTime))
##########################################
#Where slave goes wrong
##########################################
except: #Case that something goes wrong in slave
traceback.print_exc(file = slaveHandle)
logger.critical("Exiting the slave because of a failed job on host %s", socket.gethostname())
job = Job.read(jobFile)
setupJobAfterFailure(job, config)
job.write()
slaveFailed = True
##########################################
#Cleanup
##########################################
#Close the slave logging
slaveHandle.flush()
sys.stderr = origStdErr
sys.stdout = origStdOut
redirectLoggerStreamHandlers(slaveHandle, sys.stderr)
slaveHandle.close()
#Copy back the log file to the global dir, if needed
if slaveFailed:
truncateFile(tempSlaveLogFile)
system("mv %s %s" % (tempSlaveLogFile, job.getLogFileName()))
#Remove the temp dir
system("rm -rf %s" % localSlaveTempDir)
#This must happen after the log file is done with, else there is no place to put the log
if (not slaveFailed) and len(job.followOnCommands) == 0 and len(job.children) == 0 and len(job.messages) == 0:
##########################################
#Cleanup global files at the end of the chain
##########################################
job.delete()
def main():
sys.path.append(sys.argv[1])
sys.argv.remove(sys.argv[1])
#Now we can import all the stuff..
from sonLib.bioio import getBasicOptionParser
from sonLib.bioio import parseBasicOptions
from sonLib.bioio import logger
from sonLib.bioio import addLoggingFileHandler, redirectLoggerStreamHandlers
from sonLib.bioio import setLogLevel
from sonLib.bioio import getTotalCpuTime, getTotalCpuTimeAndMemoryUsage
from sonLib.bioio import getTempDirectory
from sonLib.bioio import makeSubDir
from jobTree.src.job import Job
from jobTree.src.master import getEnvironmentFileName, getConfigFileName, listChildDirs, getTempStatsFile, setupJobAfterFailure
from sonLib.bioio import system
##########################################
#Input args
##########################################
jobTreePath = sys.argv[1]
jobFile = sys.argv[2]
##########################################
#Load the environment for the job
##########################################
#First load the environment for the job.
fileHandle = open(getEnvironmentFileName(jobTreePath), 'r')
environment = cPickle.load(fileHandle)
fileHandle.close()
for i in environment:
if i not in ("TMPDIR", "TMP", "HOSTNAME", "HOSTTYPE"):
os.environ[i] = environment[i]
# sys.path is used by __import__ to find modules
if "PYTHONPATH" in environment:
for e in environment["PYTHONPATH"].split(':'):
if e != '':
sys.path.append(e)
#os.environ = environment
#os.putenv(key, value)
##########################################
#Setup the temporary directories.
##########################################
#Dir to put all the temp files in.
localSlaveTempDir = getTempDirectory()
localTempDir = makeSubDir(os.path.join(localSlaveTempDir, "localTempDir"))
##########################################
#Setup the logging
##########################################
#Setup the logging. This is mildly tricky because we don't just want to
#redirect stdout and stderr for this Python process; we want to redirect it
#for this process and all children. Consequently, we can't just replace
#sys.stdout and sys.stderr; we need to mess with the underlying OS-level
#file descriptors. See <http://stackoverflow.com/a/11632982/402891>
#When we start, standard input is file descriptor 0, standard output is
#file descriptor 1, and standard error is file descriptor 2.
#What file do we want to point FDs 1 and 2 to?
tempSlaveLogFile = os.path.join(localSlaveTempDir, "slave_log.txt")
#Save the original stdout and stderr (by opening new file descriptors to the
#same files)
origStdOut = os.dup(1)
origStdErr = os.dup(2)
#Open the file to send stdout/stderr to.
logDescriptor = os.open(tempSlaveLogFile, os.O_WRONLY | os.O_CREAT | os.O_APPEND)
#Replace standard output with a descriptor for the log file
os.dup2(logDescriptor, 1)
#Replace standard error with a descriptor for the log file
os.dup2(logDescriptor, 2)
#Since we only opened the file once, all the descriptors duped from the
#original will share offset information, and won't clobber each others'
#writes. See <http://stackoverflow.com/a/5284108/402891>. This shouldn't
#matter, since O_APPEND seeks to the end of the file before every write, but
#maybe there's something odd going on...
#Close the descriptor we used to open the file
os.close(logDescriptor)
for handler in list(logger.handlers): #Remove old handlers
logger.removeHandler(handler)
#Add the new handler. The sys.stderr stream has been redirected by swapping
#the file descriptor out from under it.
logger.addHandler(logging.StreamHandler(sys.stderr))
#Put a message at the top of the log, just to make sure it's working.
print "---JOBTREE SLAVE OUTPUT LOG---"
sys.stdout.flush()
#Log the number of open file descriptors so we can tell if we're leaking
#them.
logger.debug("Next available file descriptor: {}".format(
nextOpenDescriptor()))
##########################################
#Parse input files
##########################################
config = ET.parse(getConfigFileName(jobTreePath)).getroot()
setLogLevel(config.attrib["log_level"])
job = Job.read(jobFile)
job.messages = [] #This is the only way to stop messages logging twice, as are read only in the master
job.children = [] #Similarly, this is where old children are flushed out.
job.write() #Update status, to avoid reissuing children after running a follow on below.
if os.path.exists(job.getLogFileName()): #This cleans the old log file
os.remove(job.getLogFileName())
logger.info("Parsed arguments and set up logging")
#Try loop for slave logging
##########################################
#Setup the stats, if requested
##########################################
if config.attrib.has_key("stats"):
startTime = time.time()
startClock = getTotalCpuTime()
stats = ET.Element("slave")
else:
stats = None
##########################################
#The max time
##########################################
maxTime = float(config.attrib["job_time"])
assert maxTime > 0.0
assert maxTime < sys.maxint
##########################################
#Slave log file trapped from here on in
##########################################
slaveFailed = False
try:
##########################################
#The next job
##########################################
def globalTempDirName(job, depth):
return job.getGlobalTempDirName() + str(depth)
command, memoryAvailable, cpuAvailable, depth = job.followOnCommands[-1]
defaultMemory = int(config.attrib["default_memory"])
defaultCpu = int(config.attrib["default_cpu"])
assert len(job.children) == 0
startTime = time.time()
while True:
job.followOnCommands.pop()
##########################################
#Global temp dir
##########################################
globalTempDir = makeSubDir(globalTempDirName(job, depth))
i = 1
while os.path.isdir(globalTempDirName(job, depth+i)):
system("rm -rf %s" % globalTempDirName(job, depth+i))
i += 1
##########################################
#Old children, not yet deleted
#
#These may exist because of the lazy cleanup
#we do
##########################################
for childDir in listChildDirs(job.jobDir):
logger.debug("Cleaning up old child %s" % childDir)
system("rm -rf %s" % childDir)
##########################################
#Run the job
##########################################
if command != "": #Not a stub
if command[:11] == "scriptTree ":
##########################################
#Run the target
##########################################
loadStack(command).execute(job=job, stats=stats,
localTempDir=localTempDir, globalTempDir=globalTempDir,
memoryAvailable=memoryAvailable, cpuAvailable=cpuAvailable,
defaultMemory=defaultMemory, defaultCpu=defaultCpu, depth=depth)
else: #Is another command
system(command)
##########################################
#Cleanup/reset a successful job/checkpoint
##########################################
job.remainingRetryCount = int(config.attrib["try_count"])
system("rm -rf %s/*" % (localTempDir))
job.update(depth=depth, tryCount=job.remainingRetryCount)
##########################################
#Establish if we can run another job
##########################################
if time.time() - startTime > maxTime:
logger.info("We are breaking because the maximum time the job should run for has been exceeded")
break
#Deal with children
if len(job.children) >= 1: #We are going to have to return to the parent
logger.info("No more jobs can run in series by this slave, its got %i children" % len(job.children))
break
if len(job.followOnCommands) == 0:
logger.info("No more jobs can run by this slave as we have exhausted the follow ons")
break
#Get the next job and see if we have enough cpu and memory to run it..
command, memory, cpu, depth = job.followOnCommands[-1]
if memory > memoryAvailable:
logger.info("We need more memory for the next job, so finishing")
break
if cpu > cpuAvailable:
logger.info("We need more cpus for the next job, so finishing")
break
logger.info("Starting the next job")
##########################################
#Finish up the stats
##########################################
if stats != None:
totalCpuTime, totalMemoryUsage = getTotalCpuTimeAndMemoryUsage()
stats.attrib["time"] = str(time.time() - startTime)
stats.attrib["clock"] = str(totalCpuTime - startClock)
stats.attrib["memory"] = str(totalMemoryUsage)
tempStatsFile = getTempStatsFile(jobTreePath)
fileHandle = open(tempStatsFile + ".new", "w")
ET.ElementTree(stats).write(fileHandle)
fileHandle.close()
os.rename(tempStatsFile + ".new", tempStatsFile) #This operation is atomic
logger.info("Finished running the chain of jobs on this node, we ran for a total of %f seconds" % (time.time() - startTime))
##########################################
#Where slave goes wrong
##########################################
except: #Case that something goes wrong in slave
traceback.print_exc()
logger.critical("Exiting the slave because of a failed job on host %s", socket.gethostname())
job = Job.read(jobFile)
setupJobAfterFailure(job, config)
job.write()
slaveFailed = True
##########################################
#Cleanup
##########################################
#Close the slave logging
#Flush at the Python level
sys.stdout.flush()
sys.stderr.flush()
#Flush at the OS level
os.fsync(1)
os.fsync(2)
#Close redirected stdout and replace with the original standard output.
os.dup2(origStdOut, 1)
#Close redirected stderr and replace with the original standard error.
os.dup2(origStdOut, 2)
#sys.stdout and sys.stderr don't need to be modified at all. We don't need
#to call redirectLoggerStreamHandlers since they still log to sys.stderr
#Close our extra handles to the original standard output and standard error
#streams, so we don't leak file handles.
os.close(origStdOut)
os.close(origStdErr)
#Now our file handles are in exactly the state they were in before.
#Copy back the log file to the global dir, if needed
if slaveFailed:
truncateFile(tempSlaveLogFile)
system("mv %s %s" % (tempSlaveLogFile, job.getLogFileName()))
#Remove the temp dir
system("rm -rf %s" % localSlaveTempDir)
#This must happen after the log file is done with, else there is no place to put the log
if (not slaveFailed) and len(job.followOnCommands) == 0 and len(job.children) == 0 and len(job.messages) == 0:
##########################################
#Cleanup global files at the end of the chain
##########################################
job.delete()