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#!/bin/sh
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
""":"
work_dir=$(dirname $0)
base_name=$(basename $0)
cd $work_dir
if [ $HOD_PYTHON_HOME ]; then
exec $HOD_PYTHON_HOME -OO $base_name ${1+"$@"}
elif [ -e /usr/bin/python ]; then
exec /usr/bin/python -OO $base_name ${1+"$@"}
elif [ -e /usr/local/bin/python ]; then
exec /usr/local/bin/python -OO $base_name ${1+"$@"}
else
exec python -OO $base_name ${1+"$@"}
fi
":"""
"""The executable to be used by the user"""
import sys, os, re
myName = os.path.basename(sys.argv[0])
myName = re.sub(".*/", "", myName)
binDirectory = os.path.realpath(sys.argv[0])
rootDirectory = re.sub("/bin/.*", "", binDirectory)
libDirectory = rootDirectory
sys.path.append(libDirectory)
from hodlib.HodRing.hodRing import HodRing
from hodlib.Common.setup import *
from hodlib.Common.util import filter_warnings, get_exception_string, \
get_exception_error_string, getMapredSystemDirectory, \
to_http_url, local_fqdn
from hodlib.Common.logger import getLogger, ensureLogDir
from hodlib.Common.xmlrpc import hodXRClient
filter_warnings()
reVersion = re.compile(".*(\d+_\d+).*")
VERSION = '$HeadURL$'
reMatch = reVersion.match(VERSION)
if reMatch:
VERSION = reMatch.group(1)
VERSION = re.sub("_", ".", VERSION)
else:
VERSION = 'DEV'
# Definition tuple is of the form:
# (name, type, description, default value, required?, validate?)
#
defList = { 'hodring' : (
('temp-dir', 'directory', 'hod work directories',
False, None, True, False),
('log-dir', 'directory', 'hod logging directory.',
False, os.path.join(rootDirectory, 'logs'), False, True),
('log-destination-uri', 'string',
'URI to store logs to, local://some_path or '
+ 'hdfs://host:port/some_path',
False, None, False, True),
('pkgs', 'directory', 'Path to Hadoop to use in case of uploading to HDFS',
False, None, False, True),
('syslog-address', 'address', 'Syslog address.',
False, None, False, True),
('java-home', 'directory', 'Java home directory.',
False, None, True, True),
('debug', 'pos_int', 'Debugging level, 0-4.',
False, 3, True, True),
('register', 'bool', 'Register with service registry?',
False, True, True, True),
('stream', 'bool', 'Output to stderr.',
False, False, False, True),
('userid', 'user_account',
'User ID the hod shell is running under.',
False, None, True, False),
('xrs-port-range', 'range', 'XML-RPC port range n-m.',
False, None, True, True),
('http-port-range', 'range', 'HTTP port range n-m.',
False, None, True, True),
('command', 'string', 'Command for hodring to run.',
False, None, False, True),
('service-id', 'string', 'Service ID.',
False, None, False, True),
('download-addr', 'string', 'Download HTTP address.',
False, None, False, True),
('svcrgy-addr', 'address', 'Service registry XMLRPC address.',
False, None, True, True),
('ringmaster-xrs-addr', 'address', 'Ringmaster XML-RPC address.',
False, None, False, True),
('tarball-retry-initial-time', 'pos_float','initial retry time for tarball download',
False, 1, False, True),
('tarball-retry-interval', 'pos_float','interval to spread retries for tarball download',
False, 3, False, True),
('cmd-retry-initial-time', 'pos_float','initial retry time for getting commands',
False, 2, False, True),
('cmd-retry-interval', 'pos_float','interval to spread retries for getting commands',
False, 2, False, True),
('mapred-system-dir-root', 'string', 'Root under which mapreduce system directory names are generated by HOD.',
False, '/mapredsystem', False, False))
}
if __name__ == '__main__':
confDef = definition()
confDef.add_defs(defList)
hodRingOptions = options(confDef, "./%s [OPTIONS]" % myName, VERSION)
ensureLogDir(hodRingOptions['hodring']['log-dir'])
service = None
try:
(status, statusMsgs) = hodRingOptions.verify()
if not status:
raise Exception("%s" % statusMsgs)
hodRingOptions['hodring']['base-dir'] = rootDirectory
service = HodRing(hodRingOptions)
service.start()
service.wait()
if service.log:
log = service.log
else:
log = getLogger(hodRingOptions['hodring'],'hodring')
list = []
runningHadoops = service.getRunningValues()
mrSysDirManager = None
for cmd in runningHadoops:
if cmd.name == 'jobtracker':
mrSysDirManager = cmd.getMRSystemDirectoryManager()
log.debug("addding %s to cleanup list..." % cmd)
cmd.addCleanup(list)
list.append(service.getTempDir())
log.debug(list)
# archive_logs now
cmdString = os.path.join(rootDirectory, "bin", "hodcleanup") # same python
if (len(runningHadoops) == 0):
log.info("len(runningHadoops) == 0, No running cluster?")
log.info("Skipping __copy_archive_to_dfs")
hadoopString = ""
else: hadoopString=runningHadoops[0].path
#construct the arguments
if hodRingOptions['hodring'].has_key('log-destination-uri'):
cmdString = cmdString + " --log-destination-uri " \
+ hodRingOptions['hodring']['log-destination-uri']
hadoopLogDirs = service.getHadoopLogDirs()
if hadoopLogDirs:
cmdString = cmdString \
+ " --hadoop-log-dirs " \
+ ",".join(hadoopLogDirs)
cmdString = cmdString \
+ " --temp-dir " \
+ service._cfg['temp-dir'] \
+ " --hadoop-command-string " \
+ hadoopString \
+ " --user-id " \
+ service._cfg['userid'] \
+ " --service-id " \
+ service._cfg['service-id'] \
+ " --hodring-debug " \
+ str(hodRingOptions['hodring']['debug']) \
+ " --hodring-log-dir " \
+ hodRingOptions['hodring']['log-dir'] \
+ " --hodring-cleanup-list " \
+ ",".join(list)
if hodRingOptions['hodring'].has_key('syslog-address'):
syslogAddr = hodRingOptions['hodring']['syslog-address'][0] + \
':' + str(hodRingOptions['hodring']['syslog-address'][1])
cmdString = cmdString + " --hodring-syslog-address " + syslogAddr
if service._cfg.has_key('pkgs'):
cmdString = cmdString + " --pkgs " + service._cfg['pkgs']
if mrSysDirManager is not None:
cmdString = "%s %s" % (cmdString, mrSysDirManager.toCleanupArgs())
log.info("cleanup commandstring : ")
log.info(cmdString)
# clean up
cmd = ['/bin/sh', '-c', cmdString]
mswindows = (sys.platform == "win32")
originalcwd = os.getcwd()
if not mswindows:
try:
pid = os.fork()
if pid > 0:
# exit first parent
log.info("child(pid: %s) is now doing cleanup" % pid)
sys.exit(0)
except OSError, e:
log.error("fork failed: %d (%s)" % (e.errno, e.strerror))
sys.exit(1)
# decouple from parent environment
os.chdir("/")
os.setsid()
os.umask(0)
MAXFD = 128 # more than enough file descriptors to close. Just in case.
for i in xrange(0, MAXFD):
try:
os.close(i)
except OSError:
pass
try:
os.execvp(cmd[0], cmd)
finally:
log.critical("exec failed")
os._exit(1)
except Exception, e:
if service:
if service.log:
log = service.log
else:
log = getLogger(hodRingOptions['hodring'], 'hodring')
log.error("Error in bin/hodring %s. \nStack trace:\n%s" %(get_exception_error_string(),get_exception_string()))
log.info("now trying informing to ringmaster")
log.info(hodRingOptions['hodring']['ringmaster-xrs-addr'])
log.info(hodRingOptions.normalizeValue('hodring', 'ringmaster-xrs-addr'))
log.info(to_http_url(hodRingOptions.normalizeValue( \
'hodring', 'ringmaster-xrs-addr')))
# Report errors to the Ringmaster if possible
try:
ringXRAddress = to_http_url(hodRingOptions.normalizeValue( \
'hodring', 'ringmaster-xrs-addr'))
log.debug("Creating ringmaster XML-RPC client.")
ringClient = hodXRClient(ringXRAddress)
if ringClient is not None:
addr = local_fqdn() + "_" + str(os.getpid())
ringClient.setHodRingErrors(addr, str(e))
log.info("Reported errors to ringmaster at %s" % ringXRAddress)
except Exception, e:
log.error("Failed to report errors to ringmaster at %s" % ringXRAddress)
log.error("Reason : %s" % get_exception_string())
# End of reporting errors to the client
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