X-Git-Url: http://p2p-next.cs.pub.ro/gitweb/?a=blobdiff_plain;f=cis%2Fcisd.py;h=d286ef7958b4a379c254473e98d7b71cb3e93847;hb=2aecadba1f242a0dcf68614a6aa602282f020b41;hp=d4c20deff7e3d8ab18da506f8b41a59304eb7298;hpb=3cf4f616f7d4095623ad5eae5db9fb1149ee1238;p=living-lab-site.git diff --git a/cis/cisd.py b/cis/cisd.py index d4c20de..d286ef7 100755 --- a/cis/cisd.py +++ b/cis/cisd.py @@ -2,9 +2,13 @@ import sys import os +import fnmatch +import shutil import time import threading from Queue import Queue +import web +import json import config import bt @@ -18,133 +22,271 @@ class CIWorker(threading.Thread): CIWorker shares a Queue with its master where jobs are submitted. """ - def __init__(self, queue): - threading.Thread.__init__(self) + raw_videos_dir = 'tmp/raw' + transcoded_videos_dir = 'tmp/media' + thumbs_dir = 'tmp/thumbs' + torrents_dir = 'tmp/torrents' - self.queue = queue + def __init__(self, shared, bit_torrent): + """ + Initialize Content Ingestion Worker. - def run(self): - while True: - job = self.queue.get() + @param shared data shared with the front-end (Service) + """ - # * TRANSFER RAW VIDEO IN - file_transfer = config.FILE_TRANSFERER_CLASS( \ - 'tmp/raw', config.INPUT_PATH) - file_transfer.get([job.raw_video]) - file_transfer.close() + threading.Thread.__init__(self, name='CIWorker') - # * TRANSCODE RAW VIDEO - transcoder = config.TRANSCODER_CLASS(input_file = job.raw_video, \ - name = job.name, prog_bin = config.TRANSCODER_BIN) - - # Transcode the raw video in each requested format. - for transcode_config in job.transcode_configs: - transcode_config['output_file'] = transcoder.transcode( \ - container = transcode_config.container, \ - a_codec = transcode_config.a_codec, \ - a_bitrate = transcode_config.a_bitrate, \ - a_samplingrate = transcode_config.a_samplingrate, \ - a_channels = transcode_config.a_channels, \ - v_codec = transcode_config.v_codec, \ - v_bitrate = transcode_config.v_bitrate, \ - v_framerate = transcode_config.v_framerate, \ - v_resolution = transcode_config.v_resolution, \ - v_dar = transcode_config.dar) + self.shared = shared + self.bit_torrent = bit_torrent - # * EXTRACT THUMBNAIL IMAGES - thumb_extractor = config.THUMB_EXTRACTOR_CLASS( \ - input_file = job.raw_video, name = job.name, \ - prog_bin = config.THUMB_EXTRACTOR_BIN) - # TODO thumbnail extraction type must be got from input + def transfer_in(self, raw_video): + """ + Transfers a raw video file from the Web Server. + + @param raw_video raw video file name + """ + + file_transfer = config.FILE_TRANSFERER_CLASS( \ + self.raw_videos_dir, config.INPUT_PATH) + file_transfer.get([raw_video]) + file_transfer.close() + + print '** Transfering in finished.' + + def transcode(self, input_video, video_name, transcode_configs): + """ + Transcodes a video in each requested formats. + + @param input_video input video file name + @param video_name a video name which must be a valid file name + @param transcode_configs a list of dictionaries with format settings + """ + + transcoder = config.TRANSCODER_CLASS( \ + input_file = os.path.join(self.raw_videos_dir, input_video), \ + name = video_name, prog_bin = config.TRANSCODER_BIN) + transcoder.dest_path = self.transcoded_videos_dir + + # Transcode the raw video in each requested format. + # TODO report partial errors + for transcode_config in transcode_configs: + transcode_config['output_file'] = \ + transcoder.transcode(**transcode_config) + + print '** Transcoding finished.' + + def extract_thumbs(self, input_video, video_name, thumbs): + """ + Extracts thumbnail images from a video. + + @param input_video input video file name + @param video_name a video name which must be a valid file name + @param thumbs use 'random' to extract a thumbnail image from a random + point of the video or use a positive integer n to extract n summary + thumbnail + """ + + # TODO report partial errors + thumb_extractor = config.THUMB_EXTRACTOR_CLASS( \ + input_file = os.path.join(self.raw_videos_dir, input_video), \ + name = video_name, \ + prog_bin = config.THUMB_EXTRACTOR_BIN) + thumb_extractor.dest_path = self.thumbs_dir + if thumbs == 'random': thumb_extractor.extract_random_thumb() - print thumb_extractor.extract_summary_thumbs(5) + elif type(thumbs) is int and thumbs > 0: + thumb_extractor.extract_summary_thumbs(thumbs) + + print '** Extracting thumbs finished.' + def seed(self, transcode_configs): + """ + Creates torrents from the videos passed and then stats seeding them. - queue.task_done() + @param transcode_configs a list of dictionaries with format settings + """ + for transcode_config in transcode_configs: + # * CREATE TORRENTS FOR EACH TRANSCODED VIDEO + # Create torrent file. + bt.create_torrent(transcode_config['output_file']) + + # The torrent file is created in the same directory with the + # source file. Move it to the torrents directory. + shutil.move(transcode_config['output_file'] + '.tstream', \ + self.torrents_dir) -class TranscodeConfig: - """ - Structure that contains parameters for a transcoding procedure. - """ + output_file = transcode_config['output_file'] + '.tstream' + output_file = output_file[(output_file.rindex('/') + 1):] - def __init__(self, container, a_codec, v_codec, - a_bitrate, a_samplingrate, a_channels, - v_bitrate, v_framerate, v_resolution, v_dar): + # * SEED TORRENTS + bit_torrent.start_download( \ + os.path.join(self.torrents_dir, output_file), + self.transcoded_videos_dir) - self.container = container - self.a_codec = a_codec - self.v_codec = v_codec - self.a_bitrate = a_bitrate - self.a_samplingrate = a_samplingrate - self.a_channels = a_channels - self.v_bitrate = v_bitrate - self.v_framerate = v_framerate - self.v_resolution = v_resolution - self.v_dar = v_dar + print '** Creating torrents and seeding finished.' + def transfer_out(self, local_files, local_path, remote_path): + """ + Transfers some local files to a remote path of the Web Server. + @param local_files list local files to transfer + @param remote_path destination path on the Web Server + """ -class Job: - """ - Structure that contains information about a job. + file_transfer = config.FILE_TRANSFERER_CLASS( \ + local_path, remote_path) + file_transfer.put(local_files) + file_transfer.close() - Members are documented in the constructor. - """ + print '** Creating torrents and seeding finished.' - def __init__(self, raw_video, name, transcode_configs): + def remove_files(self, files, path): """ - @param raw_video the input raw video file name transfered from WS - @param name video name (must be a valid file name) - @param transcode_configs a list of TranscodeConfig instances + Deletes files from a specified path. """ - self.raw_video = raw_video - self.name = name - self.transcode_configs + for f in files: + os.unlink(os.path.join(path, f)) + print '** Cleaning up finished.' -if __name__ == '__main__': - # Jobs queue. - queue = Queue() + def run(self): + while True: + job = self.shared.queue.get() + + # * TRANSFER RAW VIDEO IN + self.transfer_in(job['raw_video']) - # Worker thread. - ci_worker = CIWorker(queue) - ci_worker.daemon = True - ci_worker.start() + # * TRANSCODE RAW VIDEO + self.transcode(job['raw_video'], job['name'], \ + job['transcode_configs']) - while True: - raw_video = sys.stdin.readline().strip() - if raw_video == 'x': - break + # * EXTRACT THUMBNAIL IMAGES + if job['thumbs'] != 0: + self.extract_thumbs(job['raw_video'], job['name'], \ + job['thumbs']) + + # * CREATE TORRENTS AND START SEEDING OF TRANSCODED VIDEOS + self.seed(job['transcode_configs']) + + # Torrent files. + files = [f for f in os.listdir(self.torrents_dir) \ + if os.path.isfile(os.path.join( \ + self.torrents_dir, f))] + torrent_files = fnmatch.filter(files, job['name'] + "_*") + + # Thumbnail images files. + files = [f for f in os.listdir(self.thumbs_dir) \ + if os.path.isfile(os.path.join( \ + self.thumbs_dir, f))] + thumb_files = fnmatch.filter(files, job['name'] + "_*") + + # Raw video files. + raw_files = [f for f in os.listdir(self.raw_videos_dir) \ + if os.path.isfile(os.path.join( \ + self.raw_videos_dir, f))] + + # * TRANSFER TORRENTS AND THUMBNAIL IMAGES OUT + self.transfer_out(torrent_files, self.torrents_dir, \ + config.OUTPUT_TORRENTS_PATH) + self.transfer_out(thumb_files, self.thumbs_dir, \ + config.OUTPUT_THUMBS_PATH) + + # * CLEANUP RAW VIDEOS AND THUMBNAIL IMAGES + self.remove_files(raw_files, self.raw_videos_dir) + self.remove_files(thumb_files, self.thumbs_dir) - job = Job(raw_video) - queue.put(job) + # * JOB FINISHED + self.shared.queue.task_done() + print 'load in run is', self.shared.load + self.shared.load -= job['weight'] - queue.join() +class Shared: + """ + Shared data between Service (front-end) and CIWorker (back-end). + + @member queue a list of dictionaries with the following keys: + + @member load total weight of the jobs from the queue + """ + def __init__(self): + # Jobs queue. + self.queue = Queue() + # Sever load. + self.load = 0 -# transcoder = config.TRANSCODER_CLASS(sys.argv[1]) -# transcoder.transcode('webm', "vorbis", "vp8", a_bitrate="128k", a_samplingrate=22050, a_channels=2, v_bitrate="256k", v_framerate=15, v_resolution="320x240", v_dar="4:3") +class Service: + """ + Implementation of the RESTful web service which constitutes the interface + with the client (web server). + """ + + def __init__(self): + # Shared data with back-end (CIWorker). + self.shared = Shared() + + global bit_torrent + + # Worker thread. + ci_worker = CIWorker(self.shared, bit_torrent) + ci_worker.daemon = True + ci_worker.start() + + def __del__(self): + self.shared.queue.join() -# thumb_extractor = config.THUMB_EXTRACTOR_CLASS(sys.argv[1]) -# #print thumb_extractor.get_video_duration() -# #thumb_extractor.extract_random_thumb() -# print thumb_extractor.extract_summary_thumbs(5) - -# file_transfer = config.FILE_TRANSFERER_CLASS() -# file_transfer.get(['vim_config.tar.gz']) -# #file_transfer.put(['cisd.py']) -# file_transfer.close() - -# create_torrent(sys.argv[1]) - -# bt_inst = bt.BitTorrent() -# -# bt_inst.download(sys.argv[1], '/tmp') -# bt_inst.download(sys.argv[2], '/tmp') -# -# print threading.active_count(), threading.enumerate() -# time.sleep(30) + def GET(self, request): + #web.header('Cache-Control', 'no-cache') + + if request == 'get_load': + resp = {"load": self.shared.load} + print 'load in GET is', self.shared.load + web.header('Content-Type', 'application/json') + return json.dumps(resp) + else: + web.badrequest() + return "" + + + def POST(self, request): + if request == 'ingest_content': + # Read JSON parameters. + json_data = web.data() + data = json.loads(json_data) + + # Add job weight to CIS load. + self.shared.load += data["weight"] + print 'load in POST is', self.shared.load + + # Submit job. + self.shared.queue.put(data) + + return 'Job submitted.' + else: + web.badrequest() + return "" + + +if __name__ == '__main__': + # The BitTorrent object implements a NextShare (Tribler) BitTorrent + # client for seeding, downloading etc. + global bit_torrent + bit_torrent = bt.BitTorrent() + + # Web service. + urls = ('/(.*)', 'Service') + service = web.application(urls, globals()) + service.run()