launchmanycore.py :  » Network » Torrent-Swapper » swapper » BitTornado » Python Open Source

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Python Open Source » Network » Torrent Swapper 
Torrent Swapper » swapper » BitTornado » launchmanycore.py
#!/usr/bin/env python

# Written by John Hoffman and Pawel Garbacki
# see LICENSE.txt for license information

from random import seed
from socket import error
from threading import Event
import sys, os
from clock import clock
from __init__ import createPeerID,mapbase64
from cStringIO import StringIO
from traceback import print_exc

from BitTornado import PSYCO
if PSYCO.psyco:
    try:
        import psyco
        assert psyco.__version__ >= 0x010100f0
        psyco.full()
    except:
        pass
from download_bt1 import BT1Download
from RawServer import RawServer
from SocketHandler import UPnP_ERROR
from RateLimiter import RateLimiter
from ServerPortHandler import MultiHandler
from parsedir import parsedir
from natpunch import UPnP_test
from BT1.Encrypter import Encoder
from BT1.Connecter import Connecter

from Swapper.__init__ import GLOBAL
from Swapper.Overlay.OverlaySwarm import OverlaySwarm
from Swapper.Overlay.SecureOverlay import SecureOverlay
from Swapper.Overlay.OverlayApps import OverlayApps
from Swapper.CacheDB.CacheDBHandler import MyDBHandler,TorrentDBHandler,MyPreferenceDBHandler
# 2fastbt_
from Swapper.toofastbt.Logger import get_logger,create_logger
# _2fastbt

try:
    True
except:
    True = 1
    False = 0

DEBUG = False

def fmttime(n):
    try:
        n = int(n)  # n may be None or too large
        assert n < 5184000  # 60 days
    except:
        return 'downloading'
    m, s = divmod(n, 60)
    h, m = divmod(m, 60)
    return '%d:%02d:%02d' % (h, m, s)

class SingleDownload:
    def __init__(self, controller, hash, response, config, myid):       
        self.controller = controller
        self.hash = hash
        self.response = response
        self.config = config
        self.doneflag = Event()
        self.waiting = True
        self.checking = False
        self.working = False
        self.seed = False
        self.closed = False

        self.status_msg = ''
        self.status_err = ['']
        self.status_errtime = 0
        self.status_done = 0.0
        self.name = ''

        #SingleRawServer=LaunchMany.MultiHandler.newRawServer(infohash)
        self.rawserver = controller.handler.newRawServer(hash, self.doneflag)
        d = BT1Download(self.display,
                        self.finished,
                        self.error, 
                        controller.exchandler,
                        self.doneflag,
                        config,
                        response, 
                        hash,
                        myid,
                        self.rawserver,
                        controller.listen_port)
        self.d = d

    def start(self):
        if not self.d.saveAs(self.saveAs):
            self._shutdown()
            return
        self._hashcheckfunc = self.d.initFiles()
        if not self._hashcheckfunc:
            self._shutdown()
            return
        self.controller.hashchecksched(self.hash)

    def saveAs(self, name, length, saveas, isdir):
        name = self.controller.saveAs(self.hash, name, saveas, isdir)
        self.name = os.path.abspath(name)
        if DEBUG:
            print >> sys.stderr,"SingleDownload: saveAs name is",name
        return name

    def hashcheck_start(self, donefunc):
        if self.is_dead():
            self._shutdown()
            return
        self.waiting = False
        self.checking = True
        self._hashcheckfunc(donefunc)

    def hashcheck_callback(self):
        self.checking = False
        if self.is_dead():
            self._shutdown()
            return
        if not self.d.startEngine(ratelimiter = self.controller.ratelimiter):
            self._shutdown()
            return
        self.d.startRerequester()
        self.statsfunc = self.d.startStats()
        self.rawserver.start_listening(self.d.getPortHandler())
        self.working = True

    def is_dead(self):
        return self.doneflag.isSet()

    def _shutdown(self):
        self.shutdown(False)

    def shutdown(self, quiet=True):
        if self.closed:
            return
        self.doneflag.set()
        self.rawserver.shutdown()
        if self.checking or self.working:
            self.d.shutdown()
        self.waiting = False
        self.checking = False
        self.working = False
        self.closed = True
        self.controller.was_stopped(self.hash)
        if not quiet:
            self.controller.died(self.hash)
            

    def display(self, activity = None, fractionDone = None):
        # really only used by StorageWrapper now
        if activity:
            self.status_msg = activity
        if fractionDone is not None:
            self.status_done = float(fractionDone)

    def finished(self):
        self.seed = True

    def error(self, msg):
        if self.doneflag.isSet():
            self._shutdown()
        self.status_err.append(msg)
        self.status_errtime = clock()


class LaunchMany:
    def __init__(self, config, Output):
        try:
# 2fastbt_
            create_logger(config['2fastbtlog'])
# _2fastbt

            self.config = config
            self.Output = Output

            self.text_mode = config.has_key('text_mode')
            self.torrent_dir = config['torrent_dir']
            self.scan_period = config['parse_dir_interval']

            self.torrent_cache = {}
            self.file_cache = {}
            self.blocked_files = {}
            self.stats_period = config['display_interval']
            self.updatepeers_period = 5    # add it to config['updatepeers_interval']

            self.torrent_list = []
            self.downloads = {}
            self.counter = 0
            self.doneflag = Event()

            self.hashcheck_queue = []
            self.hashcheck_current = None
            self.torrent_list = []
            
            # Swapper extension flags
            GLOBAL.do_overlay = config['overlay']
            GLOBAL.do_cache = config['cache']
            GLOBAL.do_buddycast = config['buddycast']
            GLOBAL.do_download_help = config['download_help']
            GLOBAL.do_torrent_collecting = config['torrent_collecting']
            #GLOBAL.do_superpeer = config['superpeer']
            #GLOBAL.do_das_test = config['das_test']
            GLOBAL.do_buddycast_interval = config['buddycast_interval']
            GLOBAL.overlay_log = config['overlay_log']
            
            self.rawserver = RawServer(self.doneflag,
                                       config['timeout_check_interval'],
                                       config['timeout'],
                                       ipv6_enable = config['ipv6_enabled'],
                                       failfunc = self.failed,
                                       errorfunc = self.exchandler)
            upnp_type = UPnP_test(config['upnp_nat_access'])
            self.listen_port = -1
            if config['minport'] != config['maxport']:
                first_try = MyDBHandler().get('port')
            first_try = 0
            while 1:
                try:
                    self.listen_port = self.rawserver.find_and_bind(first_try, 
                                    config['minport'], config['maxport'], config['bind'], 
                                    reuse = True,
                                    ipv6_socket_style = config['ipv6_binds_v4'], 
                                    upnp = upnp_type, randomizer = config['random_port'])
                    if DEBUG:
                        print >> sys.stderr,"BitTornado/launchmany: Got listen port", self.listen_port
                    print "Got listen port", self.listen_port
                    break
                except socketerror, e:
                    if upnp_type and e == UPnP_ERROR:
                        self.Output.message('WARNING: COULD NOT FORWARD VIA UPnP')
                        upnp_type = 0
                        continue
                    msg = "Couldn't not bind to listen port - " + str(e)
                    self.failed(msg)
                    if not self.text_mode:
                        raise socketerror(msg)
                    return
            

            self.ratelimiter = RateLimiter(self.rawserver.add_task, 
                                           config['upload_unit_size'])
            self.ratelimiter.set_upload_rate(config['max_upload_rate'])

            self.handler = MultiHandler(self.rawserver, self.doneflag)
            #
            # Arno: disabling out startup of torrents, need to fix this
            # to let text-mode work again.
            #
            if self.text_mode:
                self.rawserver.add_task(self.scan, 0)
            self.rawserver.add_task(self.stats, 0)

            # do_cache -> do_overlay -> (do_buddycast, do_download_help)
            if not GLOBAL.do_cache:
                GLOBAL.do_overlay = 0    # overlay
            if not GLOBAL.do_overlay:
                GLOBAL.do_buddycast = 0
                GLOBAL.do_download_help = 0

            if GLOBAL.do_overlay:
                MyDBHandler().put('port', self.listen_port)
                self.overlayswarm = OverlaySwarm.getInstance()                
                self.secure_overlay = SecureOverlay.getInstance()
                self.overlayswarm.register(self.listen_port, self.secure_overlay, self.handler, 
                                           self.config)
                self.secure_overlay.register(self.overlayswarm)
                self.overlay_apps = OverlayApps.getInstance()
                self.overlay_apps.register(self.secure_overlay, self, GLOBAL.do_buddycast, GLOBAL.do_download_help,
                                            GLOBAL.do_torrent_collecting, GLOBAL.config_dir)
                # It's important we don't start listening to the network until
                # all higher protocol-handling layers are properly configured.
                self.overlayswarm.start_listening()
            
            self.torrent_db = TorrentDBHandler()
            self.mypref_db = MyPreferenceDBHandler()
            self.start()

        except Exception,e:
            data = StringIO()
            print_exc(file = data)
            Output.exception(data.getvalue())
            # Arno: make it go to a warning popup that doesn't stop the program
            if not self.text_mode:
                self.utility.frame.onWarning(e)

    def start(self):
        try:
            self.handler.listen_forever()
        except:
            data = StringIO()
            print_exc(file=data)
            self.Output.exception(data.getvalue())
        
        self.hashcheck_queue = []
        for hash in self.torrent_list:
            self.Output.message('dropped "'+self.torrent_cache[hash]['path']+'"')
            self.downloads[hash].shutdown()
                
        self.rawserver.shutdown()

    def scan(self):
        self.rawserver.add_task(self.scan, self.scan_period)
                                
        r = parsedir(self.torrent_dir, self.torrent_cache, 
                     self.file_cache, self.blocked_files, 
                     return_metainfo = True, errfunc = self.Output.message)

        if DEBUG:
            print >> sys.stderr,"Torrent cache len: ", len(self.torrent_cache)
        ( self.torrent_cache, self.file_cache, self.blocked_files,
            added, removed ) = r
        if DEBUG:
            print >> sys.stderr,"Torrent cache len: ", len(self.torrent_cache), len(added), len(removed)
        for hash, data in removed.items():
            self.Output.message('dropped "'+data['path']+'"')
            self.remove(hash)
        for hash, data in added.items():
            self.Output.message('added "'+data['path']+'"')
            self.add(hash, data)
            
    def stats(self):
        self.rawserver.add_task(self.stats, self.stats_period)
        data = []
        for hash in self.torrent_list:
            cache = self.torrent_cache[hash]
            if self.config['display_path']:
                name = cache['path']
            else:
                name = cache['name']
            size = cache['length']
            d = self.downloads[hash]
            progress = '0.0%'
            peers = 0
            seeds = 0
            seedsmsg = "S"
            dist = 0.0
            uprate = 0.0
            dnrate = 0.0
            upamt = 0
            dnamt = 0
            t = 0
            if d.is_dead():
                status = 'stopped'
            elif d.waiting:
                status = 'waiting for hash check'
            elif d.checking:
                status = d.status_msg
                progress = '%.1f%%' % (d.status_done*100)
            else:
                stats = d.statsfunc()
# 2fastbt_
#                get_logger().log(3, "launchmanycore.launchmany: statsfunc: '" + 
#                    str(d.statsfunc) + "' dnrate: '" + str(stats['down']) + "'")
# _2fastbt
                s = stats['stats']
                if d.seed:
                    status = 'seeding'
                    progress = '100.0%'
                    seeds = s.numOldSeeds
                    seedsmsg = "s"
                    dist = s.numCopies
                else:
                    if s.numSeeds + s.numPeers:
                        t = stats['time']
                        if t == 0:  # unlikely
                            t = 0.01
                        status = fmttime(t)
                    else:
                        t = -1
                        status = 'connecting to peers'
                    progress = '%.1f%%' % (int(stats['frac']*1000)/10.0)
                    seeds = s.numSeeds
                    dist = s.numCopies2
                    dnrate = stats['down']
                peers = s.numPeers
                uprate = stats['up']
                upamt = s.upTotal
                dnamt = s.downTotal
                   
            if d.is_dead() or d.status_errtime+300 > clock():
                msg = d.status_err[-1]
            else:
                msg = ''
            data.append(( name, status, progress, peers, seeds, seedsmsg, dist,
                          uprate, dnrate, upamt, dnamt, size, t, msg ))
        stop = self.Output.display(data)
        if stop:
            self.doneflag.set()
            
    def remove(self, hash):
        if DEBUG:
            print >> sys.stderr,"BitTornado/launchmany: STOP_DOWNLOAD_HELP not supported in text-mode!"
        self.torrent_list.remove(hash)
        self.downloads[hash].shutdown()
        del self.downloads[hash]
        
    def add(self, hash, data):
        
        if DEBUG:
            print >> sys.stderr,"BitTornado/launchmany: Adding torrent"
        
        c = self.counter
        self.counter += 1
        x = ''
        for i in xrange(3):
            x = mapbase64[c & 0x3F]+x
            c >>= 6
        peer_id = createPeerID(x)    # Uses different id for different swarm
        d = SingleDownload(self, hash, data['metainfo'], self.config, peer_id)
        self.torrent_list.append(hash)
        self.downloads[hash] = d
        src = os.path.abspath(data['path'])
        self.addTorrentToDB(src, hash, data['metainfo'], d.name)
        d.start()
        return d
    
    def addTorrentToDB(self, src, torrent_hash, metainfo, dest):
        
        info = metainfo['info']
        
        torrent = {}
        torrent['torrent_dir'], torrent['torrent_name'] = os.path.split(src)
        torrent['relevance'] = 100*1000
        
        torrent_info = {}
        torrent_info['name'] = info.get('name', '')
        length = 0
        nf = 0
        if info.has_key('length'):
            length = info.get('length', 0)
            nf = 1
        elif info.has_key('files'):
            for li in info['files']:
                nf += 1
                if li.has_key('length'):
                    length += li['length']
        torrent_info['length'] = length
        torrent_info['num_files'] = nf
        torrent_info['announce'] = metainfo.get('announce', '')
        torrent_info['announce-list'] = metainfo.get('announce-list', '')
        torrent_info['creation date'] = metainfo.get('creation date', 0)
        torrent['info'] = torrent_info
        
        self.torrent_db.addTorrent(torrent_hash, torrent, new_metadata=True)
        self.torrent_db.sync()    

        mypref = {}
        if dest:
            mypref['content_dir'], mypref['content_name'] = os.path.split(dest)

        self.mypref_db.addPreference(torrent_hash, mypref)
        if self.overlay_apps.buddycast is not None:
            self.overlay_apps.buddycast.addMyPref(torrent_hash)


    def saveAs(self, hash, name, saveas, isdir):
        x = self.torrent_cache[hash]
        style = self.config['saveas_style']
        if style == 1 or style == 3:
            if saveas:
                saveas = os.path.join(saveas, x['file'][:-1-len(x['type'])])
            else:
                saveas = x['path'][:-1-len(x['type'])]
            if style == 3:
                if not os.path.isdir(saveas):
                    try:
                        os.mkdir(saveas)
                    except:
                        raise OSError("couldn't create directory for "+x['path']
                                      +" ("+saveas+")")
                if not isdir:
                    saveas = os.path.join(saveas, name)
        else:
            if saveas:
                saveas = os.path.join(saveas, name)
            else:
                saveas = os.path.join(os.path.split(x['path'])[0], name)
                
        if isdir and not os.path.isdir(saveas):
            try:
                os.mkdir(saveas)
            except:
                raise OSError("couldn't create directory for "+x['path']
                                      +" ("+saveas+")")
        return saveas


    def hashchecksched(self, hash = None):
        if hash:
            self.hashcheck_queue.append(hash)
            # Check smallest torrents first
            self.hashcheck_queue.sort(lambda x, y: cmp(self.downloads[x].d.datalength, self.downloads[y].d.datalength))
        if not self.hashcheck_current:
            self._hashcheck_start()

    def _hashcheck_start(self):
        self.hashcheck_current = self.hashcheck_queue.pop(0)
        self.downloads[self.hashcheck_current].hashcheck_start(self.hashcheck_callback)

    def hashcheck_callback(self):
        self.downloads[self.hashcheck_current].hashcheck_callback()
        if self.hashcheck_queue:
            self._hashcheck_start()
        else:
            self.hashcheck_current = None

    def died(self, hash):
        if self.torrent_cache.has_key(hash):
            self.Output.message('DIED: "'+self.torrent_cache[hash]['path']+'"')
        
    def was_stopped(self, hash):
        try:
            self.hashcheck_queue.remove(hash)
        except:
            pass
        if self.hashcheck_current == hash:
            self.hashcheck_current = None
            if self.hashcheck_queue:
                self._hashcheck_start()

    def failed(self, s):
        self.Output.message('FAILURE: '+s)

    def exchandler(self, s):
        self.Output.exception(s)

# 2fastbt_
    def get_coordinator(self,torrent_hash):
        d = self.get_bt1download(torrent_hash)
        if d is not None:
            return d.coordinator
        
    def get_helper(self,torrent_hash):
        d = self.get_bt1download(torrent_hash)
        if d is not None:
            return d.helper

    def get_bt1download(self,torrent_hash):
        try:
            d = self.downloads[torrent_hash]
            if d is None:
                return None
            else:
                return d
        except KeyError:
            return None
# _2fastbt
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