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# Licensed under the MIT license
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# http://opensource.org/licenses/mit-license.php
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# Coherence backend presenting the content of the MIRO Guide catalog for on-line videos
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# The APi is described on page:
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# https://develop.participatoryculture.org/trac/democracy/wiki/MiroGuideApi
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# Copyright 2009, Jean-Michel Sizun
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# Copyright 2009 Frank Scholz <coherence@beebits.net>
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from coherence.upnp.core import utils
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from coherence.upnp.core import DIDLLite
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from coherence.backend import BackendStore, BackendItem, Container, LazyContainer, \
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from coherence.backends.youtube_storage import TestVideoProxy
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class VideoItem(BackendItem):
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def __init__(self, name, description, url, thumbnail_url, store):
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self.mimetype = "video"
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self.thumbnail_url = thumbnail_url
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self.description = description
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self.location = TestVideoProxy(self.video_url, hash(self.video_url),
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store.cache_directory, store.cache_maxsize,store.buffer_size
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upnp_id = self.get_id()
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upnp_parent_id = self.parent.get_id()
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self.item = DIDLLite.VideoItem(upnp_id, upnp_parent_id, self.name)
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self.item.description = self.description
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self.item.date = self.date
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if self.thumbnail_url is not None:
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self.item.icon = self.thumbnail_url
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self.item.albumArtURI = self.thumbnail_url
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res = DIDLLite.Resource(self.url, 'http-get:*:%s:*' % self.mimetype)
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res.duration = self.duration
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self.item.res.append(res)
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return self.storage_id
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class MiroGuideStore(AbstractBackendStore):
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logCategory = 'miroguide_store'
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implements = ['MediaServer']
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description = ('Miro Guide', 'connects to the MIRO Guide service and exposes the podcasts catalogued by the service. ', None)
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options = [{'option':'name', 'text':'Server Name:', 'type':'string','default':'my media','help': 'the name under this MediaServer shall show up with on other UPnP clients'},
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{'option':'version','text':'UPnP Version:','type':'int','default':2,'enum': (2,1),'help': 'the highest UPnP version this MediaServer shall support','level':'advance'},
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{'option':'uuid','text':'UUID Identifier:','type':'string','help':'the unique (UPnP) identifier for this MediaServer, usually automatically set','level':'advance'},
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{'option':'language','text':'Language:','type':'string', 'default':'English'},
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{'option':'refresh','text':'Refresh period','type':'string'},
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{'option':'proxy_mode','text':'Proxy mode:','type':'string', 'enum': ('redirect','proxy','cache','buffered')},
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{'option':'buffer_size','text':'Buffering size:','type':'int'},
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{'option':'cache_directory','text':'Cache directory:','type':'dir', 'group':'Cache'},
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{'option':'cache_maxsize','text':'Cache max size:','type':'int', 'group':'Cache'},
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def __init__(self, server, **kwargs):
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AbstractBackendStore.__init__(self, server, **kwargs)
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self.name = kwargs.get('name','MiroGuide')
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self.language = kwargs.get('language','English')
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self.refresh = int(kwargs.get('refresh',60))*60
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self.proxy_mode = kwargs.get('proxy_mode', 'redirect')
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self.cache_directory = kwargs.get('cache_directory', '/tmp/coherence-cache')
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if self.proxy_mode != 'redirect':
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os.mkdir(self.cache_directory)
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self.cache_maxsize = kwargs.get('cache_maxsize', 100000000)
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self.buffer_size = kwargs.get('buffer_size', 750000)
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rootItem = Container(None, self.name)
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self.set_root_item(rootItem)
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categoriesItem = Container(rootItem, "All by Categories")
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rootItem.add_child(categoriesItem)
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languagesItem = Container(rootItem, "All by Languages")
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rootItem.add_child(languagesItem)
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self.appendLanguage("Recent Videos", self.language, rootItem, sort='-age', count=15)
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self.appendLanguage("Top Rated", self.language, rootItem, sort='rating', count=15)
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self.appendLanguage("Most Popular", self.language, rootItem, sort='-popular', count=15)
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print "ERROR: %s" % error
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def gotCategories(result):
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print "Unable to retrieve list of categories"
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categories = eval(data) # FIXME add some checks to avoid code injection
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for category in categories:
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name = category['name'].encode('ascii', 'strict')
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category_url = category['url'].encode('ascii', 'strict')
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self.appendCategory(name, name, categoriesItem)
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categories_url = "https://www.miroguide.com/api/list_categories"
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d1 = utils.getPage(categories_url)
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d1.addCallbacks(gotCategories, gotError)
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def gotLanguages(result):
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print "Unable to retrieve list of languages"
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languages = eval(data) # FIXME add some checks to avoid code injection
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for language in languages:
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name = language['name'].encode('ascii', 'strict')
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language_url = language['url'].encode('ascii', 'strict')
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self.appendLanguage(name, name, languagesItem)
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languages_url = "https://www.miroguide.com/api/list_languages"
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d2 = utils.getPage(languages_url)
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d2.addCallbacks(gotLanguages, gotError)
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self.init_completed()
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return self.__class__.__name__
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def appendCategory( self, name, category_id, parent):
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item = LazyContainer(parent, name, category_id, self.refresh, self.retrieveChannels, filter="category", filter_value=category_id, per_page=100)
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parent.add_child(item, external_id=category_id)
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def appendLanguage( self, name, language_id, parent, sort='name', count=0):
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item = LazyContainer(parent, name, language_id, self.refresh, self.retrieveChannels, filter="language", filter_value=language_id, per_page=100, sort=sort, count=count)
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parent.add_child(item, external_id=language_id)
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def appendChannel(self, name, channel_id, parent):
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item = LazyContainer(parent, name, channel_id, self.refresh, self.retrieveChannelItems, channel_id=channel_id)
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parent.add_child(item, external_id=channel_id)
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self.current_connection_id = None
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self.server.connection_manager_server.set_variable(
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0, 'SourceProtocolInfo',
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['http-get:*:%s:*' % 'video/'], #FIXME put list of all possible video mimetypes
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self.wmc_mapping = {'15': self.get_root_id()}
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def retrieveChannels (self, parent, filter, filter_value, per_page=100, offset=0, count=0, sort='name'):
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filter_value = urllib.quote(filter_value.encode("utf-8"))
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uri = "https://www.miroguide.com/api/get_channels?limit=%d&offset=%d&filter=%s&filter_value=%s&sort=%s" % (limit, offset, filter, filter_value, sort)
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d = utils.getPage(uri)
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def gotChannels(result):
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print "Unable to retrieve channel for category %s" % category_id
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channels = eval(data)
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for channel in channels:
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publisher = channel['publisher']
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description = channel['description']
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hi_def = channel['hi_def']
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thumbnail_url = channel['thumbnail_url']
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postal_code = channel['postal_code']
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website_url = channel['website_url']
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name = channel['name']
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self.appendChannel(name, id, parent)
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if ((count == 0) and (len(channels) >= per_page)):
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#print "reached page limit (%d)" % len(channels)
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parent.childrenRetrievingNeeded = True
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print "ERROR: %s" % error
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d.addCallbacks(gotChannels, gotError)
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def retrieveChannelItems (self, parent, channel_id):
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uri = "https://www.miroguide.com/api/get_channel?id=%s" % channel_id
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d = utils.getPage(uri)
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def gotItems(result):
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print "Unable to retrieve items for channel %s" % channel_id
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if (channel.has_key('item')):
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items = channel['item']
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description = item['description']
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#print "description:", description
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if (channel.has_key('thumbnail_url')):
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#print "Thumbnail:", channel['thumbnail_url']
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thumbnail_url = channel['thumbnail_url']
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item = VideoItem(name, description, url, thumbnail_url, self)
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parent.add_child(item, external_id=url)
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print "ERROR: %s" % error
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d.addCallbacks(gotItems, gotError)