root/galaxy-central/lib/galaxy/web/controllers/tracks.py @ 3

リビジョン 2, 15.1 KB (コミッタ: hatakeyama, 14 年 前)

import galaxy-central

行番号 
1"""
2Support for constructing and viewing custom "track" browsers within Galaxy.
3
4Track browsers are currently transient -- nothing is stored to the database
5when a browser is created. Building a browser consists of selecting a set
6of datasets associated with the same dbkey to display. Once selected, jobs
7are started to create any necessary indexes in the background, and the user
8is redirected to the browser interface, which loads the appropriate datasets.
9
10"""
11
12import re, pkg_resources
13pkg_resources.require( "bx-python" )
14
15from bx.seq.twobit import TwoBitFile
16from galaxy import model
17from galaxy.util.json import to_json_string, from_json_string
18from galaxy.web.base.controller import *
19from galaxy.web.framework import simplejson
20from galaxy.web.framework.helpers import grids
21from galaxy.util.bunch import Bunch
22
23from galaxy.visualization.tracks.data_providers import *
24
25# Message strings returned to browser
26messages = Bunch(
27    PENDING = "pending",
28    NO_DATA = "no data",
29    NO_CHROMOSOME = "no chromosome",
30    NO_CONVERTER = "no converter",
31    DATA = "data",
32    ERROR = "error"
33)
34
35class DatasetSelectionGrid( grids.Grid ):
36    class DbKeyColumn( grids.GridColumn ):
37        def filter( self, trans, user, query, dbkey ):
38            """ Filter by dbkey. """
39            # use raw SQL b/c metadata is a BLOB
40            dbkey = dbkey.replace("'", "\\'")
41            return query.filter( or_( "metadata like '%%\"dbkey\": [\"%s\"]%%'" % dbkey, "metadata like '%%\"dbkey\": \"%s\"%%'" % dbkey ) )
42   
43    # Grid definition.
44    available_tracks = None
45    title = "Add Tracks"
46    template = "/tracks/add_tracks.mako"
47    async_template = "/page/select_items_grid_async.mako"
48    model_class = model.HistoryDatasetAssociation
49    default_filter = { "deleted" : "False" , "shared" : "All" }
50    default_sort_key = "name"
51    use_async = True
52    use_paging = False
53    columns = [
54        grids.TextColumn( "Name", key="name", model_class=model.HistoryDatasetAssociation ),
55        grids.TextColumn( "Filetype", key="extension", model_class=model.HistoryDatasetAssociation ),
56        DbKeyColumn( "Dbkey", key="dbkey", model_class=model.HistoryDatasetAssociation, visible=False )
57    ]
58    columns.append(
59        grids.MulticolFilterColumn( "Search", cols_to_filter=[ columns[0], columns[1] ],
60        key="free-text-search", visible=False, filterable="standard" )
61    )
62   
63    def build_initial_query( self, trans, **kwargs ):
64        return trans.sa_session.query( self.model_class ).join( model.History.table).join( model.Dataset.table )
65    def apply_query_filter( self, trans, query, **kwargs ):
66        if self.available_tracks is None:
67             self.available_tracks = trans.app.datatypes_registry.get_available_tracks()
68        return query.filter( model.History.user == trans.user ) \
69                    .filter( model.HistoryDatasetAssociation.extension.in_(self.available_tracks) ) \
70                    .filter( model.Dataset.state == model.Dataset.states.OK ) \
71                    .filter( model.History.deleted == False ) \
72                    .filter( model.HistoryDatasetAssociation.deleted == False )
73                   
74class TracksterSelectionGrid( grids.Grid ):
75
76    # Grid definition.
77    title = "Insert into visualization"
78    template = "/tracks/add_to_viz.mako"
79    async_template = "/page/select_items_grid_async.mako"
80    model_class = model.Visualization
81    default_filter = { "deleted" : "False" , "shared" : "All" }
82    default_sort_key = "title"
83    use_async = True
84    use_paging = False
85    columns = [
86        grids.TextColumn( "Title", key="title", model_class=model.Visualization ),
87        grids.TextColumn( "Dbkey", key="dbkey", model_class=model.Visualization )
88    ]
89    columns.append(
90        grids.MulticolFilterColumn( "Search", cols_to_filter=[ columns[0] ],
91        key="free-text-search", visible=False, filterable="standard" )
92    )
93
94    def build_initial_query( self, trans, **kwargs ):
95        return trans.sa_session.query( self.model_class )
96    def apply_query_filter( self, trans, query, **kwargs ):
97        return query.filter( self.model_class.user_id == trans.user.id )                   
98       
99class TracksController( BaseController, UsesVisualization ):
100    """
101    Controller for track browser interface. Handles building a new browser from
102    datasets in the current history, and display of the resulting browser.
103    """
104   
105    available_tracks = None
106    available_genomes = None
107   
108    def _init_references(self, trans):
109        avail_genomes = {}
110        for line in open( os.path.join( trans.app.config.tool_data_path, "twobit.loc" ) ):
111            if line.startswith("#"): continue
112            val = line.split()
113            if len(val) == 2:
114                key, path = val
115                avail_genomes[key] = path
116        self.available_genomes = avail_genomes
117   
118    @web.expose
119    @web.require_login()
120    def index( self, trans, **kwargs ):
121        config = {}
122       
123        return trans.fill_template( "tracks/browser.mako", config=config, add_dataset=kwargs.get("dataset_id", None), \
124                                        default_dbkey=kwargs.get("default_dbkey", None) )
125   
126    @web.expose
127    @web.require_login()
128    def new_browser( self, trans, **kwargs ):
129        return trans.fill_template( "tracks/new_browser.mako", dbkeys=self._get_dbkeys( trans ), default_dbkey=kwargs.get("default_dbkey", None) )
130           
131    @web.json
132    @web.require_login()
133    def add_track_async(self, trans, id):
134        dataset_id = trans.security.decode_id( id )
135       
136        hda_query = trans.sa_session.query( model.HistoryDatasetAssociation )
137        dataset = hda_query.get( dataset_id )
138        track_type, _ = dataset.datatype.get_track_type()
139        track_data_provider_class = get_data_provider( original_dataset=dataset )
140        track_data_provider = track_data_provider_class( original_dataset=dataset )
141       
142        track = {
143            "track_type": track_type,
144            "name": dataset.name,
145            "dataset_id": dataset.id,
146            "prefs": {},
147            "filters": track_data_provider.get_filters()
148        }
149        return track
150       
151    @web.expose
152    @web.require_login()
153    def browser(self, trans, id, chrom="", **kwargs):
154        """
155        Display browser for the datasets listed in `dataset_ids`.
156        """
157        decoded_id = trans.security.decode_id( id )
158        session = trans.sa_session
159        vis = session.query( model.Visualization ).get( decoded_id )
160        viz_config = self.get_visualization_config( trans, vis )
161       
162        new_dataset = kwargs.get("dataset_id", None)
163        if new_dataset is not None:
164            if trans.security.decode_id(new_dataset) in [ d["dataset_id"] for d in viz_config.get("tracks") ]:
165                new_dataset = None # Already in browser, so don't add
166        return trans.fill_template( 'tracks/browser.mako', config=viz_config, add_dataset=new_dataset )
167
168    @web.json
169    def chroms(self, trans, vis_id=None, dbkey=None ):
170        """
171        Returns a naturally sorted list of chroms/contigs for either a given visualization or a given dbkey.
172        """
173        def check_int(s):
174            if s.isdigit():
175                return int(s)
176            else:
177                return s
178
179        def split_by_number(s):
180            return [ check_int(c) for c in re.split('([0-9]+)', s) ]
181           
182        # Must specify either vis_id or dbkey.
183        if not vis_id and not dbkey:
184            return trans.show_error_message("No visualization id or dbkey specified.")
185           
186        # Need to get user and dbkey in order to get chroms data.
187        if vis_id:
188            # Use user, dbkey from viz.
189            visualization = self.get_visualization( trans, vis_id, check_ownership=False, check_accessible=True )
190            visualization.config = self.get_visualization_config( trans, visualization )
191            vis_user = visualization.user
192            vis_dbkey = visualization.dbkey
193        else:
194            # No vis_id, so visualization is new. User is current user, dbkey must be given.
195            vis_user = trans.user
196            vis_dbkey = dbkey
197       
198        # Get chroms data.
199        chroms = self._chroms( trans, vis_user, vis_dbkey )
200       
201        # Check for reference chrom
202        if self.available_genomes is None: self._init_references(trans)       
203       
204        to_sort = [{ 'chrom': chrom, 'len': length } for chrom, length in chroms.iteritems()]
205        to_sort.sort(lambda a,b: cmp( split_by_number(a['chrom']), split_by_number(b['chrom']) ))
206        return { 'reference': vis_dbkey in self.available_genomes, 'chrom_info': to_sort }
207
208    def _chroms( self, trans, user, dbkey ):
209        """
210        Helper method that returns chrom lengths for a given user and dbkey.
211        """
212        len_file = None
213        len_ds = None
214        # If there is any dataset in the history of extension `len`, this will use it
215        if 'dbkeys' in user.preferences:
216            user_keys = from_json_string( user.preferences['dbkeys'] )
217            if dbkey in user_keys:
218                len_file = trans.sa_session.query( trans.app.model.HistoryDatasetAssociation ).get( user_keys[dbkey]['len'] ).file_name
219           
220        if not len_file:
221            len_ds = trans.db_dataset_for( dbkey )
222            if not len_ds:
223                len_file = os.path.join( trans.app.config.tool_data_path, 'shared','ucsc','chrom', "%s.len" % dbkey )
224            else:
225                len_file = len_ds.file_name
226        manifest = {}
227        if not os.path.exists( len_file ):
228            return None
229        for line in open( len_file ):
230            if line.startswith("#"): continue
231            line = line.rstrip("\r\n")
232            fields = line.split("\t")
233            manifest[fields[0]] = int(fields[1])
234        return manifest
235       
236    @web.json
237    def reference( self, trans, dbkey, chrom, low, high, **kwargs ):
238        if self.available_genomes is None: self._init_references(trans)
239
240        if dbkey not in self.available_genomes:
241            return None
242       
243        try:
244            twobit = TwoBitFile( open(self.available_genomes[dbkey]) )
245        except IOError:
246            return None
247           
248        if chrom in twobit:
249            return twobit[chrom].get(int(low), int(high))       
250       
251        return None
252       
253    @web.json
254    def data( self, trans, dataset_id, chrom, low, high, **kwargs ):
255        """
256        Called by the browser to request a block of data
257        """
258        dataset = trans.sa_session.query( trans.app.model.HistoryDatasetAssociation ).get( dataset_id )
259        if not dataset or not chrom:
260            return messages.NO_DATA
261        if dataset.state == trans.app.model.Job.states.ERROR:
262            return messages.ERROR
263        if dataset.state != trans.app.model.Job.states.OK:
264            return messages.PENDING
265       
266        track_type, data_sources = dataset.datatype.get_track_type()
267        for source_type, data_source in data_sources.iteritems():
268            try:
269                converted_dataset = dataset.get_converted_dataset(trans, data_source)
270            except ValueError:
271                return messages.NO_CONVERTER
272
273            # Need to check states again for the converted version
274            if converted_dataset and converted_dataset.state == model.Dataset.states.ERROR:
275                job_id = trans.sa_session.query( trans.app.model.JobToOutputDatasetAssociation ).filter_by( dataset_id=converted_dataset.id ).first().job_id
276                job = trans.sa_session.query( trans.app.model.Job ).get( job_id )
277                return { 'kind': messages.ERROR, 'message': job.stderr }
278               
279            if not converted_dataset or converted_dataset.state != model.Dataset.states.OK:
280                return messages.PENDING
281           
282        extra_info = None
283        if 'index' in data_sources:
284            # Have to choose between indexer and data provider
285            indexer = get_data_provider( name=data_sources['index'] )( dataset.get_converted_dataset(trans, data_sources['index']), dataset )
286            summary = indexer.get_summary( chrom, low, high, **kwargs )
287            if summary is not None and kwargs.get("mode", "Auto") == "Auto":
288                # Only check for summary if it's Auto mode (which is the default)
289                if summary == "no_detail":
290                    kwargs["no_detail"] = True # meh
291                    extra_info = "no_detail"
292                else:
293                    frequencies, max_v, avg_v, delta = summary
294                    return { 'dataset_type': data_sources['index'], 'data': frequencies, 'max': max_v, 'avg': avg_v, 'delta': delta }
295       
296        # Get data provider.
297        tracks_dataset_type = data_sources['data']
298        data_provider_class = get_data_provider( name=tracks_dataset_type, original_dataset=dataset )
299        data_provider = data_provider_class( dataset.get_converted_dataset(trans, tracks_dataset_type), dataset )
300       
301        # Get and return data from data_provider.
302        data = data_provider.get_data( chrom, low, high, **kwargs )
303        message = None
304        if isinstance(data, dict) and 'message' in data:
305            message = data['message']
306            tracks_dataset_type = data.get( 'data_type', tracks_dataset_type )
307            track_data = data['data']
308        else:
309            track_data = data
310        return { 'dataset_type': tracks_dataset_type, 'extra_info': extra_info, 'data': track_data, 'message': message }
311       
312   
313    @web.json
314    def save( self, trans, **kwargs ):
315        session = trans.sa_session
316        vis_id = "undefined"
317        if 'vis_id' in kwargs:
318            vis_id = kwargs['vis_id'].strip('"')
319        dbkey = kwargs['dbkey']
320       
321        if vis_id == "undefined": # new vis
322            vis = model.Visualization()
323            vis.user = trans.user
324            vis.title = kwargs['vis_title']
325            vis.type = "trackster"
326            vis.dbkey = dbkey
327            session.add( vis )
328        else:
329            decoded_id = trans.security.decode_id( vis_id )
330            vis = session.query( model.Visualization ).get( decoded_id )
331       
332        decoded_payload = simplejson.loads( kwargs['payload'] )
333        vis_rev = model.VisualizationRevision()
334        vis_rev.visualization = vis
335        vis_rev.title = vis.title
336        vis_rev.dbkey = dbkey
337        tracks = []
338        for track in decoded_payload:
339            tracks.append( {    "dataset_id": str(track['dataset_id']),
340                                "name": track['name'],
341                                "track_type": track['track_type'],
342                                "prefs": track['prefs']
343            } )
344        vis_rev.config = { "tracks": tracks }
345        vis.latest_revision = vis_rev
346        session.add( vis_rev )
347        session.flush()
348        return trans.security.encode_id(vis.id)
349   
350    data_grid = DatasetSelectionGrid()
351    tracks_grid = TracksterSelectionGrid()
352   
353    @web.expose
354    @web.require_login( "see all available datasets" )
355    def list_datasets( self, trans, **kwargs ):
356        """List all datasets that can be added as tracks"""
357       
358        # Render the list view
359        return self.data_grid( trans, **kwargs )
360   
361    @web.expose
362    def list_tracks( self, trans, **kwargs ):
363        return self.tracks_grid( trans, **kwargs )
364           
Note: リポジトリブラウザについてのヘルプは TracBrowser を参照してください。