#!/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.
#
from __future__ import division
import sys, glob, time
sys.path.insert(0, glob.glob('../../lib/py/build/lib.*')[0])
from optparse import OptionParser

parser = OptionParser()
parser.add_option('--genpydir', type='string', dest='genpydir',
                  default='gen-py',
                  help='include this local directory in sys.path for locating generated code')
parser.add_option("--port", type="int", dest="port",
    help="port number for server to listen on")
parser.add_option("--zlib", action="store_true", dest="zlib",
    help="use zlib wrapper for compressed transport")
parser.add_option("--ssl", action="store_true", dest="ssl",
    help="use SSL for encrypted transport")
parser.add_option('-v', '--verbose', action="store_const", 
    dest="verbose", const=2,
    help="verbose output")
parser.add_option('-q', '--quiet', action="store_const", 
    dest="verbose", const=0,
    help="minimal output")
parser.add_option('--proto',  dest="proto", type="string",
    help="protocol to use, one of: accel, binary, compact")
parser.set_defaults(port=9090, verbose=1, proto='binary')
options, args = parser.parse_args()

sys.path.insert(0, options.genpydir)

from ThriftTest import ThriftTest
from ThriftTest.ttypes import *
from thrift.transport import TTransport
from thrift.transport import TSocket
from thrift.transport import TZlibTransport
from thrift.protocol import TBinaryProtocol
from thrift.protocol import TCompactProtocol
from thrift.server import TServer, TNonblockingServer, THttpServer

PROT_FACTORIES = {'binary': TBinaryProtocol.TBinaryProtocolFactory,
    'accel': TBinaryProtocol.TBinaryProtocolAcceleratedFactory,
    'compact': TCompactProtocol.TCompactProtocolFactory}

class TestHandler:

  def testVoid(self):
    if options.verbose > 1:
      print 'testVoid()'

  def testString(self, str):
    if options.verbose > 1:
      print 'testString(%s)' % str
    return str

  def testByte(self, byte):
    if options.verbose > 1:
      print 'testByte(%d)' % byte
    return byte

  def testI16(self, i16):
    if options.verbose > 1:
      print 'testI16(%d)' % i16
    return i16

  def testI32(self, i32):
    if options.verbose > 1:
      print 'testI32(%d)' % i32
    return i32

  def testI64(self, i64):
    if options.verbose > 1:
      print 'testI64(%d)' % i64
    return i64

  def testDouble(self, dub):
    if options.verbose > 1:
      print 'testDouble(%f)' % dub
    return dub

  def testStruct(self, thing):
    if options.verbose > 1:
      print 'testStruct({%s, %d, %d, %d})' % (thing.string_thing, thing.byte_thing, thing.i32_thing, thing.i64_thing)
    return thing

  def testException(self, str):
    if options.verbose > 1:
      print 'testException(%s)' % str
    if str == 'Xception':
      x = Xception()
      x.errorCode = 1001
      x.message = str
      raise x
    elif str == "throw_undeclared":
      raise ValueError("Exception test PASSES.")

  def testOneway(self, seconds):
    if options.verbose > 1:
      print 'testOneway(%d) => sleeping...' % seconds
    time.sleep(seconds / 3) # be quick
    if options.verbose > 1:
      print 'done sleeping'

  def testNest(self, thing):
    if options.verbose > 1:
      print 'testNest(%s)' % thing
    return thing

  def testMap(self, thing):
    if options.verbose > 1:
      print 'testMap(%s)' % thing
    return thing

  def testSet(self, thing):
    if options.verbose > 1:
      print 'testSet(%s)' % thing
    return thing

  def testList(self, thing):
    if options.verbose > 1:
      print 'testList(%s)' % thing
    return thing

  def testEnum(self, thing):
    if options.verbose > 1:
      print 'testEnum(%s)' % thing
    return thing

  def testTypedef(self, thing):
    if options.verbose > 1:
      print 'testTypedef(%s)' % thing
    return thing

  def testMapMap(self, thing):
    if options.verbose > 1:
      print 'testMapMap(%s)' % thing
    return thing

  def testMulti(self, arg0, arg1, arg2, arg3, arg4, arg5):
    if options.verbose > 1:
      print 'testMulti(%s)' % [arg0, arg1, arg2, arg3, arg4, arg5]
    x = Xtruct(byte_thing=arg0, i32_thing=arg1, i64_thing=arg2)
    return x

# set up the protocol factory form the --proto option
pfactory_cls = PROT_FACTORIES.get(options.proto, None)
if pfactory_cls is None:
  raise AssertionError('Unknown --proto option: %s' % options.proto)
pfactory = pfactory_cls()

# get the server type (TSimpleServer, TNonblockingServer, etc...)
if len(args) > 1:
  raise AssertionError('Only one server type may be specified, not multiple types.')
server_type = args[0]

# Set up the handler and processor objects
handler = TestHandler()
processor = ThriftTest.Processor(handler)

# Handle THttpServer as a special case
if server_type == 'THttpServer':
  server =THttpServer.THttpServer(processor, ('', options.port), pfactory)
  server.serve()
  sys.exit(0)

# set up server transport and transport factory
host = None
if options.ssl:
  from thrift.transport import TSSLSocket
  transport = TSSLSocket.TSSLServerSocket(host, options.port, certfile='test_cert.pem')
else:
  transport = TSocket.TServerSocket(host, options.port)
tfactory = TTransport.TBufferedTransportFactory()

# if --zlib, then wrap server transport, and use a different transport factory
if options.zlib:
  transport = TZlibTransport.TZlibTransport(transport) # wrap  with zlib
  tfactory = TZlibTransport.TZlibTransportFactory()

# do server-specific setup here:
if server_type == "TNonblockingServer":
  server = TNonblockingServer.TNonblockingServer(processor, transport, inputProtocolFactory=pfactory)
elif server_type == "TProcessPoolServer":
  import signal
  from thrift.server import TProcessPoolServer
  server = TProcessPoolServer.TProcessPoolServer(processor, transport, tfactory, pfactory)
  server.setNumWorkers(5)
  def set_alarm():
    def clean_shutdown(signum, frame):
      for worker in server.workers:
        if options.verbose > 0:
          print 'Terminating worker: %s' % worker
        worker.terminate()
      if options.verbose > 0:
        print 'Requesting server to stop()'
      try:
        server.stop()
      except:
        pass
    signal.signal(signal.SIGALRM, clean_shutdown)
    signal.alarm(2)
  set_alarm()
else:
  # look up server class dynamically to instantiate server
  ServerClass = getattr(TServer, server_type)
  server = ServerClass(processor, transport, tfactory, pfactory)
# enter server main loop
server.serve()