#!/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, os
sys.path.insert(0, glob.glob(os.path.join(os.path.dirname(__file__),'../../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, json")
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.protocol import TJSONProtocol
from thrift.server import TServer, TNonblockingServer, THttpServer

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

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(string_thing='Hello2', 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()