forked from LBRYCommunity/lbry-sdk
194 lines
7.7 KiB
Python
194 lines
7.7 KiB
Python
import logging
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import os
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import shutil
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import json
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import sys
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import mimetypes
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from datetime import datetime
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from appdirs import user_data_dir
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from twisted.web import server, static, resource
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from twisted.internet import defer, interfaces, error, reactor, task, threads
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from zope.interface import implements
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from lbrynet.lbrynet_daemon.LBRYDaemon import LBRYDaemon
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from lbrynet.conf import API_CONNECTION_STRING, API_ADDRESS, DEFAULT_WALLET, UI_ADDRESS, DEFAULT_UI_BRANCH, LOG_FILE_NAME
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if sys.platform != "darwin":
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data_dir = os.path.join(os.path.expanduser("~"), ".lbrynet")
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else:
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data_dir = user_data_dir("LBRY")
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if not os.path.isdir(data_dir):
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os.mkdir(data_dir)
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lbrynet_log = os.path.join(data_dir, LOG_FILE_NAME)
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log = logging.getLogger(__name__)
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handler = logging.handlers.RotatingFileHandler(lbrynet_log, maxBytes=2097152, backupCount=5)
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log.addHandler(handler)
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log.setLevel(logging.INFO)
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class LBRYindex(resource.Resource):
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def __init__(self, ui_dir):
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resource.Resource.__init__(self)
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self.ui_dir = ui_dir
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isLeaf = False
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def _delayed_render(self, request, results):
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request.write(str(results))
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request.finish()
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def getChild(self, name, request):
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if name == '':
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return self
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return resource.Resource.getChild(self, name, request)
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def render_GET(self, request):
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return static.File(os.path.join(self.ui_dir, "index.html")).render_GET(request)
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class LBRYFileStreamer(object):
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"""
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Writes downloaded LBRY file to request as the download comes in, pausing and resuming as requested
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used for Chrome
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"""
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implements(interfaces.IPushProducer)
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def __init__(self, request, path, start, stop, size):
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self._request = request
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self._fileObject = file(path)
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self._content_type = mimetypes.guess_type(path)[0]
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self._stop_pos = size - 1 if stop == '' else int(stop) #chrome and firefox send range requests for "0-"
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self._cursor = self._start_pos = int(start)
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self._file_size = size
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self._depth = 0
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self._paused = self._sent_bytes = self._stopped = False
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self._delay = 0.25
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self._deferred = defer.succeed(None)
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self._request.setResponseCode(206)
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self._request.setHeader('accept-ranges', 'bytes')
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self._request.setHeader('content-type', self._content_type)
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self.resumeProducing()
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def pauseProducing(self):
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self._paused = True
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log.info("[" + str(datetime.now()) + "] Pausing producer")
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return defer.succeed(None)
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def resumeProducing(self):
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def _check_for_new_data():
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self._depth += 1
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self._fileObject.seek(self._start_pos, os.SEEK_END)
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readable_bytes = self._fileObject.tell()
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self._fileObject.seek(self._cursor)
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self._sent_bytes = False
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if (readable_bytes > self._cursor) and not (self._stopped or self._paused):
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read_length = min(readable_bytes, self._stop_pos) - self._cursor + 1
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self._request.setHeader('content-range', 'bytes %s-%s/%s' % (self._cursor, self._cursor + read_length - 1, self._file_size))
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self._request.setHeader('content-length', str(read_length))
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start_cur = self._cursor
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for i in range(read_length):
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if self._paused or self._stopped:
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break
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else:
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data = self._fileObject.read(1)
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self._request.write(data)
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self._cursor += 1
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log.info("[" + str(datetime.now()) + "] Wrote range %s-%s/%s, length: %s, readable: %s, depth: %s" %
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(start_cur, self._cursor, self._file_size, self._cursor - start_cur, readable_bytes, self._depth))
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self._sent_bytes = True
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if self._cursor == self._stop_pos + 1:
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self.stopProducing()
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return defer.succeed(None)
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elif self._paused or self._stopped:
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return defer.succeed(None)
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else:
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self._deferred.addCallback(lambda _: threads.deferToThread(reactor.callLater, self._delay, _check_for_new_data))
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return defer.succeed(None)
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log.info("[" + str(datetime.now()) + "] Resuming producer")
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self._paused = False
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self._deferred.addCallback(lambda _: _check_for_new_data())
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def stopProducing(self):
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log.info("[" + str(datetime.now()) + "] Stopping producer")
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self._stopped = True
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# self._fileObject.close()
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self._deferred.addErrback(lambda err: err.trap(defer.CancelledError))
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self._deferred.addErrback(lambda err: err.trap(error.ConnectionDone))
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self._deferred.cancel()
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# self._request.finish()
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self._request.unregisterProducer()
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return defer.succeed(None)
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class HostedLBRYFile(resource.Resource):
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def __init__(self, api):
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self._api = api
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self._producer = None
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resource.Resource.__init__(self)
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# todo: fix LBRYFileStreamer and use it instead of static.File
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# def makeProducer(self, request, stream):
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# def _save_producer(producer):
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# self._producer = producer
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# return defer.succeed(None)
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#
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# range_header = request.getAllHeaders()['range'].replace('bytes=', '').split('-')
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# start, stop = int(range_header[0]), range_header[1]
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# log.info("[" + str(datetime.now()) + "] GET range %s-%s" % (start, stop))
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# path = os.path.join(self._api.download_directory, stream.file_name)
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#
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# d = stream.get_total_bytes()
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# d.addCallback(lambda size: _save_producer(LBRYFileStreamer(request, path, start, stop, size)))
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# d.addCallback(lambda _: request.registerProducer(self._producer, streaming=True))
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# # request.notifyFinish().addCallback(lambda _: self._producer.stopProducing())
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# request.notifyFinish().addErrback(self._responseFailed, d)
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# return d
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def render_GET(self, request):
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if 'name' in request.args.keys():
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if request.args['name'][0] != 'lbry' and request.args['name'][0] not in self._api.waiting_on.keys():
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d = self._api._download_name(request.args['name'][0])
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# d.addCallback(lambda stream: self.makeProducer(request, stream))
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d.addCallback(lambda stream: static.File(os.path.join(self._api.download_directory,
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stream.file_name)).render_GET(request))
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elif request.args['name'][0] in self._api.waiting_on.keys():
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request.redirect(UI_ADDRESS + "/?watch=" + request.args['name'][0])
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request.finish()
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else:
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request.redirect(UI_ADDRESS)
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request.finish()
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return server.NOT_DONE_YET
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# def _responseFailed(self, err, call):
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# call.addErrback(lambda err: err.trap(error.ConnectionDone))
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# call.addErrback(lambda err: err.trap(defer.CancelledError))
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# call.addErrback(lambda err: log.info("Error: " + str(err)))
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# call.cancel()
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class LBRYDaemonServer(object):
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def _setup_server(self, wallet):
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self.root = LBRYindex(os.path.join(os.path.join(data_dir, "lbry-ui"), "active"))
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self._api = LBRYDaemon(self.root, wallet_type=wallet)
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self.root.putChild("view", HostedLBRYFile(self._api))
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self.root.putChild(API_ADDRESS, self._api)
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return defer.succeed(True)
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def start(self, branch=DEFAULT_UI_BRANCH, user_specified=False, branch_specified=False, wallet=None):
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d = self._setup_server(wallet)
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d.addCallback(lambda _: self._api.setup(branch, user_specified, branch_specified))
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return d
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