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#!/usr/bin/env python
#
# 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.
#
import sys
import os
from optparse import OptionParser
from thrift.Thrift import *
from thrift.transport import TSocket
from thrift.transport import TTransport
from thrift.protocol import TBinaryProtocol
from fb303 import *
from fb303.ttypes import *
def service_ctrl(
command,
port,
trans_factory=None,
prot_factory=None):
"""
service_ctrl is a generic function to execute standard fb303 functions
@param command: one of stop, start, reload, status, counters, name, alive
@param port: service's port
@param trans_factory: TTransportFactory to use for obtaining a TTransport. Default is
TBufferedTransportFactory
@param prot_factory: TProtocolFactory to use for obtaining a TProtocol. Default is
TBinaryProtocolFactory
"""
if command in ["status"]:
try:
status = fb303_wrapper('status', port, trans_factory, prot_factory)
status_details = fb303_wrapper('get_status_details', port, trans_factory, prot_factory)
msg = fb_status_string(status)
if (len(status_details)):
msg += " - %s" % status_details
print msg
if (status == fb_status.ALIVE):
return 2
else:
return 3
except:
print "Failed to get status"
return 3
# scalar commands
if command in ["version", "alive", "name"]:
try:
result = fb303_wrapper(command, port, trans_factory, prot_factory)
print result
return 0
except:
print "failed to get ", command
return 3
# counters
if command in ["counters"]:
try:
counters = fb303_wrapper('counters', port, trans_factory, prot_factory)
for counter in counters:
print "%s: %d" % (counter, counters[counter])
return 0
except:
print "failed to get counters"
return 3
# Only root should be able to run the following commands
if os.getuid() == 0:
# async commands
if command in ["stop", "reload"]:
try:
fb303_wrapper(command, port, trans_factory, prot_factory)
return 0
except:
print "failed to tell the service to ", command
return 3
else:
if command in ["stop", "reload"]:
print "root privileges are required to stop or reload the service."
return 4
print "The following commands are available:"
for command in ["counters", "name", "version", "alive", "status"]:
print "\t%s" % command
print "The following commands are available for users with root privileges:"
for command in ["stop", "reload"]:
print "\t%s" % command
return 0
def fb303_wrapper(command, port, trans_factory=None, prot_factory=None):
sock = TSocket.TSocket('localhost', port)
# use input transport factory if provided
if (trans_factory is None):
trans = TTransport.TBufferedTransport(sock)
else:
trans = trans_factory.getTransport(sock)
# use input protocol factory if provided
if (prot_factory is None):
prot = TBinaryProtocol.TBinaryProtocol(trans)
else:
prot = prot_factory.getProtocol(trans)
# initialize client and open transport
fb303_client = FacebookService.Client(prot, prot)
trans.open()
if (command == 'reload'):
fb303_client.reinitialize()
elif (command == 'stop'):
fb303_client.shutdown()
elif (command == 'status'):
return fb303_client.getStatus()
elif (command == 'version'):
return fb303_client.getVersion()
elif (command == 'get_status_details'):
return fb303_client.getStatusDetails()
elif (command == 'counters'):
return fb303_client.getCounters()
elif (command == 'name'):
return fb303_client.getName()
elif (command == 'alive'):
return fb303_client.aliveSince()
trans.close()
def fb_status_string(status_enum):
if (status_enum == fb_status.DEAD):
return "DEAD"
if (status_enum == fb_status.STARTING):
return "STARTING"
if (status_enum == fb_status.ALIVE):
return "ALIVE"
if (status_enum == fb_status.STOPPING):
return "STOPPING"
if (status_enum == fb_status.STOPPED):
return "STOPPED"
if (status_enum == fb_status.WARNING):
return "WARNING"
def main():
# parse command line options
parser = OptionParser()
commands = ["stop", "counters", "status", "reload", "version", "name", "alive"]
parser.add_option("-c", "--command", dest="command", help="execute this API",
choices=commands, default="status")
parser.add_option("-p", "--port", dest="port", help="the service's port",
default=9082)
(options, args) = parser.parse_args()
status = service_ctrl(options.command, options.port)
sys.exit(status)
if __name__ == '__main__':
main()
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