experiments/models.py

   1 from __future__ import absolute_import, print_function
   2
   3 import datetime
   4 import glob
   5 import logging
   6 import os
   7 import re
   8 import types
   9 import uuid
  10
  11 from django.conf import settings
  12 from django.core.exceptions import ObjectDoesNotExist
  13 from django.core import urlresolvers
  14 from django.utils import timezone
  15 from django.db import models
  16 from django.db.models.signals import post_init, pre_save
  17
  18 from samples.models import Library
  19 from htsworkflow.util.conversion import parse_flowcell_id
  20 from htsworkflow.pipelines import runfolder
  21
  22 import pytz
  23
  24 LOGGER = logging.getLogger(__name__)
  25 default_pM = 5
  26 try:
  27     default_pM = int(settings.DEFAULT_PM)
  28 except AttributeError, e:
  29     LOGGER.error("invalid value for default_pm")
  30
  31 # how many days to wait before trying to re-import a runfolder
  32 RESCAN_DELAY = 1
  33 try:
  34     RESCAN_DELAY = int(settings.RESCAN_DELAY)
  35 except (ValueError, AttributeError):
  36     LOGGER.error("Missing or invalid settings.RESCAN_DELAY, "\
  37                  "defaulting to %s" % (RESCAN_DELAY,))
  38
  39 RUN_STATUS_CHOICES = (
  40     (0, 'Sequencer running'),  # Solexa Data Pipeline Not Yet Started'),
  41     (1, 'Data Pipeline Started'),
  42     (2, 'Data Pipeline Interrupted'),
  43     (3, 'Data Pipeline Finished'),
  44     (4, 'Collect Results Started'),
  45     (5, 'Collect Results Finished'),
  46     (6, 'QC Started'),
  47     (7, 'QC Finished'),
  48     (255, 'DONE'),
  49   )
  50 RUN_STATUS_REVERSE_MAP = dict(((v, k) for k, v in RUN_STATUS_CHOICES))
  51
  52
  53 class ClusterStation(models.Model):
  54     """List of cluster stations"""
  55     name = models.CharField(max_length=50, unique=True)
  56     isdefault = models.BooleanField(default=False, null=False)
  57
  58     class Meta:
  59         ordering = ["-isdefault", "name"]
  60
  61     def __unicode__(self):
  62         return unicode(self.name)
  63
  64     @staticmethod
  65     def update_isdefault(sender, instance, **kwargs):
  66         """Clear default if needed
  67         """
  68         if instance.isdefault:
  69             for c in ClusterStation.objects.filter(isdefault=True).all():
  70                 if c.id != instance.id:
  71                     c.isdefault = False
  72                     c.save()
  73
  74 def cluster_station_default():
  75     d = ClusterStation.objects.filter(isdefault=True).all()
  76     if len(d) > 0:
  77         return d[0]
  78     d = ClusterStation.objects.order_by('-id').all()
  79     if len(d) > 0:
  80         return d[0]
  81     return None
  82
  83 pre_save.connect(ClusterStation.update_isdefault, sender=ClusterStation)
  84
  85 class Sequencer(models.Model):
  86     """Sequencers we've owned
  87     """
  88     name = models.CharField(max_length=50, db_index=True)
  89     instrument_name = models.CharField(max_length=50, db_index=True)
  90     serial_number = models.CharField(max_length=50, db_index=True)
  91     model = models.CharField(max_length=255)
  92     active = models.BooleanField(default=True, null=False)
  93     isdefault = models.BooleanField(default=False, null=False)
  94     comment = models.CharField(max_length=255)
  95
  96     class Meta:
  97         ordering = ["-isdefault", "-active", "name"]
  98
  99     def __unicode__(self):
 100         name = [unicode(self.name)]
 101         if self.instrument_name is not None:
 102             name.append("(%s)" % (unicode(self.instrument_name),))
 103         return " ".join(name)
 104
 105     @models.permalink
 106     def get_absolute_url(self):
 107         return ('experiments.views.sequencer',
 108                 [self.id])
 109
 110     @staticmethod
 111     def update_isdefault(sender, instance, **kwargs):
 112         """Clear default if needed
 113         """
 114         if instance.isdefault:
 115             for s in Sequencer.objects.filter(isdefault=True).all():
 116                 if s.id != instance.id:
 117                     s.isdefault = False
 118                     s.save()
 119
 120 pre_save.connect(Sequencer.update_isdefault, sender=Sequencer)
 121
 122 def sequencer_default():
 123     d = Sequencer.objects.filter(isdefault=True).all()
 124     if len(d) > 0:
 125         return d[0]
 126     d = Sequencer.objects.order_by('active', '-id').all()
 127     if len(d) > 0:
 128         return d[0]
 129     return None
 130
 131 class FlowCell(models.Model):
 132     flowcell_id = models.CharField(max_length=20, unique=True, db_index=True)
 133     run_date = models.DateTimeField()
 134     advanced_run = models.BooleanField(default=False)
 135     paired_end = models.BooleanField(default=False)
 136     read_length = models.IntegerField(default=32)  # Stanford is currenlty 25
 137     control_lane = models.IntegerField(choices=[(1, 1),
 138                                                 (2, 2),
 139                                                 (3, 3),
 140                                                 (4, 4),
 141                                                 (5, 5),
 142                                                 (6, 6),
 143                                                 (7, 7),
 144                                                 (8, 8),
 145                                                 (0, 'All Lanes')],
 146                                        null=True,
 147                                        blank=True)
 148
 149     cluster_station = models.ForeignKey(ClusterStation,
 150                                         default=cluster_station_default)
 151     sequencer = models.ForeignKey(Sequencer, default=sequencer_default)
 152
 153     notes = models.TextField(blank=True)
 154
 155     def __unicode__(self):
 156         return unicode(self.flowcell_id)
 157
 158     def Lanes(self):
 159         html = ['<table>']
 160         for lane in self.lane_set.order_by('lane_number'):
 161             cluster_estimate = lane.cluster_estimate
 162             if cluster_estimate is not None:
 163                 cluster_estimate = "%s k" % ((int(cluster_estimate) / 1000), )
 164             else:
 165                 cluster_estimate = 'None'
 166             library_id = lane.library_id
 167             library = lane.library
 168             element = '<tr><td>%d</td>'\
 169                       '<td><a href="%s">%s</a></td><td>%s</td></tr>'
 170             html.append(element % (lane.lane_number,
 171                                    library.get_admin_url(),
 172                                    library,
 173                                    cluster_estimate))
 174         html.append('</table>')
 175         return "\n".join(html)
 176     Lanes.allow_tags = True
 177
 178     class Meta:
 179         ordering = ["-run_date"]
 180
 181     def get_admin_url(self):
 182         # that's the django way... except it didn't work
 183         return urlresolvers.reverse('admin:experiments_flowcell_change',
 184                                     args=(self.id,))
 185
 186     def flowcell_type(self):
 187         """Convert our boolean 'is paired' flag to a name
 188         """
 189         if self.paired_end:
 190             return u"Paired"
 191         else:
 192             return u"Single"
 193
 194     @models.permalink
 195     def get_absolute_url(self):
 196         flowcell_id, status = parse_flowcell_id(self.flowcell_id)
 197         return ('experiments.views.flowcell_detail',
 198                 [str(flowcell_id)])
 199
 200     def get_raw_data_directory(self):
 201         """Return location of where the raw data is stored"""
 202         flowcell_id, status = parse_flowcell_id(self.flowcell_id)
 203
 204         return os.path.join(settings.RESULT_HOME_DIR, flowcell_id)
 205
 206     def update_data_runs(self):
 207         result_root = self.get_raw_data_directory()
 208         LOGGER.debug("Update data runs flowcell root: %s" % (result_root,))
 209         if result_root is None:
 210             return
 211
 212         result_home_dir = os.path.join(settings.RESULT_HOME_DIR, '')
 213         run_xml_re = re.compile(glob.fnmatch.translate('run*.xml'))
 214
 215         result_dirs = []
 216         for dirpath, dirnames, filenames in os.walk(result_root):
 217             for filename in filenames:
 218                 if run_xml_re.match(filename):
 219                     # we have a run directory
 220                     relative_pathname = get_relative_pathname(dirpath)
 221                     self.import_data_run(relative_pathname, filename)
 222
 223     def import_data_run(self, relative_pathname, run_xml_name, force=False):
 224         """Given a result directory import files"""
 225         now = timezone.now()
 226         run_dir = get_absolute_pathname(relative_pathname)
 227         run_xml_path = os.path.join(run_dir, run_xml_name)
 228
 229         runs = DataRun.objects.filter(result_dir = relative_pathname)
 230         if len(runs) == 0:
 231             run = DataRun()
 232             created = True
 233         elif len(runs) > 1:
 234             raise RuntimeError("Too many data runs for %s" % (
 235                 relative_pathname,))
 236         else:
 237             run = runs[0]
 238             created = False
 239
 240         if created or force or (now-run.last_update_time).days > RESCAN_DELAY:
 241             LOGGER.debug("Importing run from %s" % (relative_pathname,))
 242             run_xml_data = runfolder.load_pipeline_run_xml(run_xml_path)
 243             run.flowcell = self
 244             run.status = RUN_STATUS_REVERSE_MAP['DONE']
 245             run.result_dir = relative_pathname
 246             run.runfolder_name = run_xml_data.runfolder_name
 247             run.cycle_start = run_xml_data.image_analysis.start
 248             run.cycle_stop = run_xml_data.image_analysis.stop
 249             naive_run_start_time = datetime.datetime.fromordinal(run_xml_data.image_analysis.date.toordinal())
 250             run.run_start_time = pytz.timezone(settings.TIME_ZONE).localize(naive_run_start_time)
 251             run.image_software = run_xml_data.image_analysis.software
 252             run.image_version = run_xml_data.image_analysis.version
 253             run.basecall_software = run_xml_data.bustard.software
 254             run.basecall_version = run_xml_data.bustard.version
 255             # we're frequently not running alignments
 256             if run_xml_data.gerald:
 257                 run.alignment_software = run_xml_data.gerald.software
 258                 run.alignment_version = run_xml_data.gerald.version
 259
 260             run.last_update_time = timezone.now()
 261             run.save()
 262
 263             run.update_result_files()
 264
 265
 266 # FIXME: should we automatically update dataruns?
 267 #        Or should we expect someone to call update_data_runs?
 268 #def update_flowcell_dataruns(sender, instance, *args, **kwargs):
 269 #    """Update our dataruns
 270 #    """
 271 #    if not os.path.exists(settings.RESULT_HOME_DIR):
 272 #       return
 273 #
 274 #    instance.update_data_runs()
 275 #post_init.connect(update_flowcell_dataruns, sender=FlowCell)
 276
 277
 278 LANE_STATUS_CODES = [(0, 'Failed'),
 279                      (1, 'Marginal'),
 280                      (2, 'Good'), ]
 281 LANE_STATUS_MAP = dict((int(k), v) for k, v in LANE_STATUS_CODES)
 282 LANE_STATUS_MAP[None] = "Unknown"
 283
 284
 285 def is_valid_lane(value):
 286     if value >= 1 and value <= 8:
 287         return True
 288     else:
 289         return False
 290
 291
 292 class Lane(models.Model):
 293     flowcell = models.ForeignKey(FlowCell)
 294     lane_number = models.IntegerField()
 295     library = models.ForeignKey(Library)
 296     pM = models.DecimalField(max_digits=5,
 297                              decimal_places=2,
 298                              blank=False,
 299                              null=False,
 300                              default=default_pM)
 301     cluster_estimate = models.IntegerField(blank=True, null=True)
 302     status = models.IntegerField(choices=LANE_STATUS_CODES,
 303                                  null=True,
 304                                  blank=True)
 305     comment = models.TextField(null=True, blank=True)
 306
 307     @models.permalink
 308     def get_absolute_url(self):
 309         return ('experiments.views.flowcell_lane_detail',
 310                 [str(self.id)])
 311
 312     def __unicode__(self):
 313         return self.flowcell.flowcell_id + ':' + unicode(self.lane_number)
 314
 315
 316 class DataRun(models.Model):
 317     flowcell = models.ForeignKey(FlowCell, verbose_name="Flowcell Id")
 318     runfolder_name = models.CharField(max_length=50)
 319     result_dir = models.CharField(max_length=255)
 320     last_update_time = models.DateTimeField()
 321     run_start_time = models.DateTimeField()
 322     cycle_start = models.IntegerField(null=True, blank=True)
 323     cycle_stop = models.IntegerField(null=True, blank=True)
 324     run_status = models.IntegerField(choices=RUN_STATUS_CHOICES,
 325                                      null=True, blank=True)
 326     image_software = models.CharField(max_length=50)
 327     image_version = models.CharField(max_length=50)
 328     basecall_software = models.CharField(max_length=50)
 329     basecall_version = models.CharField(max_length=50)
 330     alignment_software = models.CharField(max_length=50)
 331     alignment_version = models.CharField(max_length=50)
 332     comment = models.TextField(blank=True)
 333
 334     def update_result_files(self):
 335         abs_result_dir = get_absolute_pathname(self.result_dir)
 336
 337         for dirname, dirnames, filenames in os.walk(abs_result_dir):
 338             for filename in filenames:
 339                 pathname = os.path.join(dirname, filename)
 340                 relative_pathname = get_relative_pathname(pathname)
 341                 datafiles = self.datafile_set.filter(
 342                     data_run=self,
 343                     relative_pathname=relative_pathname)
 344                 if len(datafiles) > 0:
 345                     continue
 346
 347                 metadata = find_file_type_metadata_from_filename(filename)
 348                 if metadata is not None:
 349                     metadata['filename'] = filename
 350                     newfile = DataFile()
 351                     newfile.data_run = self
 352                     newfile.file_type = metadata['file_type']
 353                     newfile.relative_pathname = relative_pathname
 354
 355                     lane_number = metadata.get('lane', None)
 356                     if lane_number is not None:
 357                         lane = self.flowcell.lane_set.get(
 358                             lane_number=lane_number)
 359                         newfile.library = lane.library
 360
 361                     self.datafile_set.add(newfile)
 362
 363         self.last_update_time = timezone.now()
 364
 365     def lane_files(self):
 366         lanes = {}
 367
 368         for datafile in self.datafile_set.all():
 369             metadata = datafile.attributes
 370             if metadata is not None:
 371                 lane = metadata.get('lane', None)
 372                 if lane is not None:
 373                     lane_file_set = lanes.setdefault(lane, {})
 374                     normalized_name = datafile.file_type.normalized_name
 375                     lane_file_set[normalized_name] = datafile
 376         return lanes
 377
 378     def ivc_plots(self, lane):
 379         ivc_name = ['IVC All', 'IVC Call',
 380                     'IVC Percent Base', 'IVC Percent All', 'IVC Percent Call']
 381
 382         plots = {}
 383         for rel_filename, metadata in self.get_result_files():
 384             if metadata.file_type.name in ivc_name:
 385                 plots[metadata.file_type.name] = (rel_filename, metadata)
 386
 387
 388 class FileType(models.Model):
 389     """Represent potential file types
 390
 391     regex is a pattern used to detect if a filename matches this type
 392     data run currently assumes that there may be a (?P<lane>) and
 393     (?P<end>) pattern in the regular expression.
 394     """
 395     name = models.CharField(max_length=50)
 396     mimetype = models.CharField(max_length=50, null=True, blank=True)
 397     # regular expression from glob.fnmatch.translate
 398     regex = models.TextField(null=True, blank=True)
 399
 400     def parse_filename(self, pathname):
 401         """Does filename match our pattern?
 402
 403         Returns None if not, or dictionary of match variables if we do.
 404         """
 405         path, filename = os.path.split(pathname)
 406         if len(self.regex) > 0:
 407             match = re.match(self.regex, filename)
 408             if match is not None:
 409                 # These are (?P<>) names we know about from our
 410                 # default regexes.
 411                 results = match.groupdict()
 412
 413                 # convert int parameters
 414                 for attribute_name in ['lane', 'end']:
 415                     value = results.get(attribute_name, None)
 416                     if value is not None:
 417                         results[attribute_name] = int(value)
 418
 419                 return results
 420
 421     def _get_normalized_name(self):
 422         """Crush data file name into identifier friendly name"""
 423         return self.name.replace(' ', '_').lower()
 424     normalized_name = property(_get_normalized_name)
 425
 426     def __unicode__(self):
 427         #return u"<FileType: %s>" % (self.name,)
 428         return self.name
 429
 430
 431 def str_uuid():
 432     """Helper function to set default UUID in DataFile"""
 433     return str(uuid.uuid1())
 434
 435
 436 class DataFile(models.Model):
 437     """Store map from random ID to filename"""
 438     random_key = models.CharField(max_length=64,
 439                                   db_index=True,
 440                                   default=str_uuid)
 441     data_run = models.ForeignKey(DataRun, db_index=True)
 442     library = models.ForeignKey(Library, db_index=True, null=True, blank=True)
 443     file_type = models.ForeignKey(FileType)
 444     relative_pathname = models.CharField(max_length=255, db_index=True)
 445
 446     def _get_attributes(self):
 447         return self.file_type.parse_filename(self.relative_pathname)
 448     attributes = property(_get_attributes)
 449
 450     def _get_pathname(self):
 451         return get_absolute_pathname(self.relative_pathname)
 452     pathname = property(_get_pathname)
 453
 454     @models.permalink
 455     def get_absolute_url(self):
 456         return ('experiments.views.read_result_file',
 457                 (), {'key': self.random_key})
 458
 459
 460 def find_file_type_metadata_from_filename(pathname):
 461     path, filename = os.path.split(pathname)
 462     result = None
 463     for file_type in FileType.objects.all():
 464         result = file_type.parse_filename(filename)
 465         if result is not None:
 466             result['file_type'] = file_type
 467             return result
 468
 469     return None
 470
 471
 472 def get_relative_pathname(abspath):
 473     """Strip off the result home directory from a path
 474     """
 475     result_home_dir = os.path.join(settings.RESULT_HOME_DIR, '')
 476     relative_pathname = abspath.replace(result_home_dir, '')
 477     return relative_pathname
 478
 479
 480 def get_absolute_pathname(relative_pathname):
 481     """Attach relative path to  results home directory"""
 482     return os.path.join(settings.RESULT_HOME_DIR, relative_pathname)