gmyth: gmyth-stream/server/0.2/lib/server.py@e323e95b88dd

     1 #!/usr/bin/env python

     3 __author__ = "Gustavo Sverzut Barbieri / Artur Duque de Souza"

     4 __author_email__ = "barbieri@gmail.com / artur.souza@indt.org.br"

     5 __license__ = "GPL"

     6 __version__ = "0.3"

     8 import os

     9 import threading

    10 import SocketServer

    11 import BaseHTTPServer

    12 import socket

    13 import urlparse

    14 import cgi

    15 import lib.utils as utils

    16 import logging as log

    18 __all__ = ("Transcoder", "RequestHandler", "Server", "serve_forever",

    19            "load_plugins_transcoders")

    21 class Transcoder(object):

    22     log = log.getLogger("gms.transcoder")

    23     priority = 0   # negative values have higher priorities

    24     name = None # to be used in requests

    25     status = None

    27     def __init__(self, params):

    28         self.params = params

    29     # __init__()

    32     def params_first(self, key, default=None):

    33         if default is None:

    34             return self.params[key][0]

    35         else:

    36             try:

    37                 return self.params[key][0]

    38             except:

    39                 return default

    40     # params_first()

    43     def get_mimetype(self):

    44         mux = self.params_first("mux", "mpg")

    46         if mux == "mpeg":

    47             return "video/mpeg"

    48         elif mux == "avi":

    49             return "video/x-msvideo"

    50         else:

    51             return "application/octet-stream"

    52     # get_mimetype()

    55     def start(self, outfile):

    56         return True

    57     # start()

    60     def stop(self):

    61         return Tru

    62     # stop()

    65     def __str__(self):

    66         return '%s( params=%s )' % \

    67                (self.__class__.__name__,

    68                 self.params)

    69     # __str__()

    70 # Transcoder

    74 class RequestHandler(BaseHTTPServer.BaseHTTPRequestHandler):

    75     log = log.getLogger("gms.request")

    76     def_transcoder = None

    77     transcoders = utils.PluginSet(Transcoder)

    79     menu = {

    80         "Stop": "/stop-transcoder.do",

    81         "Status": "/status.do",

    82         "Version": "/version.do",

    83         "Shutdown": "/shutdown.do"

    84         }

    86     @classmethod

    87     def load_plugins_transcoders(cls, directory):

    88         cls.transcoders.load_from_directory(directory)

    90         if cls.def_transcoder is None and cls.transcoders:

    91             cls.def_transcoder = cls.transcoders[0].name

    92     # load_plugins_transcoders()

    95     def do_dispatch(self, body):

    96         self.url = self.path

    98         pieces = urlparse.urlparse(self.path)

    99         self.path = pieces[2]

   100         self.query = cgi.parse_qs(pieces[4])

   102         if self.path == "/":

   103             self.serve_main(body)

   104         elif self.path == "/shutdown.do":

   105             self.serve_shutdown(body)

   106         elif self.path == "/stop-transcoder.do":

   107             self.serve_stop_transcoder(body)

   108         elif self.path == "/status.do":

   109             self.serve_status(body)

   110         elif self.path == "/version.do":

   111             self.serve_version(body)

   112         elif self.path == "/stream.do":

   113             self.serve_stream(body)

   114         else:

   115             action = self.query.get("action", None)

   116             if "stream.do" in action:

   117                 self.serve_stream(body)

   118             else:

   119                 self.send_error(404, "File not found")

   120     # do_dispatch()

   123     def do_GET(self):

   124         self.do_dispatch(True)

   125     # do_GET()

   128     def do_HEAD(self):

   129         self.do_dispatch(False)

   130     # do_HEAD()

   133     def _nav_items(self):

   134         ret = ""

   135         for name, url in self.menu.items():

   136             ret += utils.getHTML("menu", {"name": name, "url": url})

   138         return ret

   139     # _nav_items()

   141     def serve_main(self, body):

   142         self.send_response(200)

   143         self.send_header("Content-Type", "text/html")

   144         self.send_header('Connection', 'close')

   145         self.end_headers()

   146         if body:

   147             self.wfile.write(utils.getHTML("index", {"menu": self._nav_items()}))

   148     # serve_main()

   150     def serve_version(self, body):

   151         self.send_response(200)

   152         self.send_header("Content-Type", "text/html")

   153         self.send_header('Connection', 'close')

   154         self.end_headers()

   155         if body:

   156             self.wfile.write("Version: %s" %  __version__)

   159     def serve_shutdown(self, body):

   160         self.send_response(200)

   161         self.send_header("Content-Type", "text/html")

   162         self.send_header('Connection', 'close')

   163         self.end_headers()

   164         if body:

   165             self.wfile.write(utils.getHTML("shutdown"))

   166         self.server.server_close()

   167     # serve_shutdown()

   170     def serve_stop_all_transcoders(self, body):

   171         self.send_response(200)

   172         self.send_header("Content-Type", "text/html")

   173         self.send_header('Connection', 'close')

   174         self.end_headers()

   175         if body:

   176             self.server.stop_transcoders()

   177             self.wfile.write(utils.getHTML("stop_all", {"menu": self._nav_items()}))

   178     # serve_stop_all_transcoders()

   181     def serve_stop_selected_transcoders(self, body, requests):

   182         self.send_response(200)

   183         self.send_header("Content-Type", "text/html")

   184         self.send_header('Connection', 'close')

   185         self.end_headers()

   186         opts = ""

   187         if body:

   188             transcoders = self.server.get_transcoders()

   190             for req in requests:

   191                 try:

   192                     host, port = req.split(":")

   193                 except IndexError:

   194                     continue

   196                 port = int(port)

   197                 addr = (host, port)

   199                 for t, r in transcoders:

   200                     if r.client_address == addr:

   201                         try:

   202                             t.stop()

   203                         except Exception, e:

   204                             self.log.info("Plugin already stopped")

   206                         opts += self._create_html_item("%s: %s:%s" % (

   207                             t, addr[0], addr[1]))

   209                         break

   211                 self.wfile.write(utils.getHTML("stop_selected",

   212                                                {"menu": self._nav_items(),

   213                                                 "opts": opts}))

   214     # serve_stop_selected_transcoders()

   217     def serve_stop_transcoder(self, body):

   218         req = self.query.get("request", None)

   219         if req and "all" in req:

   220             self.serve_stop_all_transcoders(body)

   221         elif req:

   222             self.serve_stop_selected_transcoders(body, req)

   223         else:

   224             self.serve_status(body)

   225     # serve_stop_transcoder()

   228     def serve_status(self, body):

   229         self.send_response(200)

   230         self.send_header("Content-Type", "text/html")

   231         self.send_header('Connection', 'close')

   232         self.end_headers()

   233         stopone = ""

   235         if body:

   236             tl = self.server.get_transcoders()

   237             if not tl:

   238                 running = "<p>No running transcoder.</p>\n"

   239                 stopall = ""

   241             elif self.query.get("ip") and self.query.get("file"):

   242                 for transcoder, request in tl:

   243                     filename = "%s" % self.query.get("file")[0]

   244                     tfilename = "%s" % transcoder.params_first("uri")

   246                     if tfilename.find(filename) >= 0 and \

   247                            request.client_address[0] == self.query.get("ip")[0]:

   248                         self.wfile.write("Status: %s %%" % transcoder.status)

   249                         return True

   251                 return False

   253             else:

   254                 running = "<p>Running transcoders:</p>\n"

   255                 stopall = utils._create_html_item("<a href='%s?request=all'>"

   256                                                  "[STOP ALL]</a>" %

   257                                                  self.menu["Stop"])

   259                 for transcoder, request in tl:

   260                     stopone += utils._create_html_item("%s: %s:%s<a href='%s?"

   261                                                        "request=%s:%s'>"

   262                                                        "[STOP]</a> - "

   263                                                        "Status: %s%%"\

   264                                                      % (

   265                         transcoder, request.client_address[0],

   266                         request.client_address[1],

   267                         self.menu["Stop"], request.client_address[0],

   268                         request.client_address[1],

   269                         transcoder.status) )

   271                 self.wfile.write(utils.getHTML("status",

   272                                                {"menu": self._nav_items(),

   273                                                 "running": running,

   274                                                 "stopall": stopall,

   275                                                 "stopone": stopone}))

   276     # serve_status()

   279     def _get_transcoder(self):

   280         # get transcoder option: mencoder is the default

   281         request_transcoders = self.query.get("transcoder", ["mencoder"])

   283         for t in request_transcoders:

   284             transcoder = self.transcoders.get(t)

   285             if transcoder:

   286                 return transcoder

   288         if not transcoder:

   289             return self.transcoders[self.def_transcoder]

   290     # _get_transcoder()

   293     def serve_stream(self, body):

   294         transcoder = self._get_transcoder()

   295         try:

   296             obj = transcoder(self.query)

   297         except Exception, e:

   298             self.send_error(500, str(e))

   299             return

   301         self.send_response(200)

   302         self.send_header("Content-Type", obj.get_mimetype())

   303         self.send_header('Connection', 'close')

   304         self.end_headers()

   306         if body:

   307             self.server.add_transcoders(self, obj)

   308             obj.start(self.wfile)

   309             self.server.del_transcoders(self, obj)

   310     # serve_stream()

   313     def log_request(self, code='-', size='-'):

   314         self.log.info('"%s" %s %s', self.requestline, str(code), str(size))

   315     # log_request()

   318     def log_error(self, format, *args):

   319         self.log.error("%s: %s" % (self.address_string(), format % args))

   320     # log_error()

   323     def log_message(self, format, *args):

   324         self.log.info("%s: %s" % (self.address_string(), format % args))

   325     # log_message()

   326 # RequestHandler

   330 class Server(SocketServer.ThreadingMixIn, BaseHTTPServer.HTTPServer):

   331     log = log.getLogger("gms.server")

   332     run = True

   333     _transcoders = {}

   334     _lock = threading.RLock()

   336     def serve_forever(self):

   337         self.log.info("GMyth-Streamer serving HTTP on %s:%s" %

   338                       self.socket.getsockname())

   339         try:

   340             while self.run:

   341                 self.handle_request()

   342         except KeyboardInterrupt, e:

   343             pass

   345         self.log.debug("Stopping all remaining transcoders...")

   346         self.stop_transcoders()

   347         self.log.debug("Transcoders stopped!")

   348     # serve_forever()

   351     def get_request(self):

   352         skt = self.socket

   353         old = skt.gettimeout()

   354         skt.settimeout(0.5)

   355         while self.run:

   356             try:

   357                 r = skt.accept()

   358                 skt.settimeout(old)

   359                 return r

   360             except socket.timeout, e:

   361                 pass

   362         raise socket.error("Not running")

   363     # get_request()

   366     def server_close(self):

   367         self.run = False

   368         self.stop_transcoders()

   370         BaseHTTPServer.HTTPServer.server_close(self)

   371     # server_close()

   374     def stop_transcoders(self):

   375         self._lock.acquire()

   376         for transcoder, request in self._transcoders.iteritems():

   377             self.log.info("Stop transcoder: %s, client=%s" %

   378                           (transcoder, request.client_address))

   379             transcoder.stop()

   380         self._lock.release()

   381     # stop_transcoders()

   384     def get_transcoders(self):

   385         self._lock.acquire()

   386         try:

   387             return self._transcoders.items()

   388         finally:

   389             self._lock.release()

   390     # get_transcoders()

   393     def add_transcoders(self, request, transcoder):

   394         self._lock.acquire()

   395         try:

   396             self._transcoders[transcoder] = request

   397         finally:

   398             self._lock.release()

   399     # add_transcoders()

   402     def del_transcoders(self, request, transcoder):

   403         self._lock.acquire()

   404         try:

   405             del self._transcoders[transcoder]

   406         finally:

   407             self._lock.release()

   408     # del_transcoders()

   409 # Server

   413 def serve_forever(host="0.0.0.0", port=40000):

   414     addr = (host, port)

   415     RequestHandler.protocol_version = "HTTP/1.0"

   416     httpd = Server(addr, RequestHandler)

   417     httpd.serve_forever()

   418 # serve_forever()

   421 def load_plugins_transcoders(directory):

   422     RequestHandler.load_plugins_transcoders(directory)

   423 # load_plugins_transcoders()

author	rosfran
	Tue May 22 19:21:42 2007 +0100 (2007-05-22)
branch	trunk
changeset 697	e323e95b88dd
parent 686	b29ea6deb6f8
child 717	24db16480456
permissions	-rw-r--r--