Example #1
0
    def __init__(self, ctx):
        super(type(self), self).__init__(ctx)
        self.__get_configuration(ctx)
        logging.basicConfig(level=self.log_level)
        self.event_monitor = HadoopEventMonitor(self.COUNTER_CLASS,
                                                logging.getLogger("mapper"),
                                                ctx)

        self.aligner = BwaAligner()
        self.aligner.event_monitor = self.event_monitor
        self.aligner.qformat = self.format
        self.aligner.max_isize = self.max_isize
        self.aligner.nthreads = self.nthreads
        self.aligner.trim_qual = self.trim_qual
        self.aligner.mmap_enabled = True

        ######## assemble hit processor chain
        chain = FilterLink(self.event_monitor)
        chain.remove_unmapped = self.remove_unmapped
        chain.min_hit_quality = self.min_hit_quality
        if self.__map_only:
            chain.set_next(EmitSamLink(ctx, self.event_monitor))
        else:
            chain.set_next(MarkDuplicatesEmitter(ctx, self.event_monitor))
        self.aligner.hit_visitor = chain

        ######## set the path to the reference index
        self.ref_archive = utils.get_ref_archive(ctx.getJobConf())
        self.aligner.reference = self.get_reference_root(self.ref_archive)

        # part of the code is a workaround for accumulating records, see #331
        isplit = InputSplit(ctx.getInputSplit())
        self.split_end = isplit.offset + isplit.length
Example #2
0
File: mapper.py Project: pinno/seal
    def __init__(self, ctx):
        super(type(self), self).__init__(ctx)
        self.__get_configuration(ctx)
        logging.basicConfig(level=self.log_level)
        self.event_monitor = HadoopEventMonitor(self.COUNTER_CLASS, logging.getLogger("mapper"), ctx)

        self.aligner = BwaAligner()
        self.aligner.event_monitor = self.event_monitor
        self.aligner.qformat = self.format
        self.aligner.max_isize = self.max_isize
        self.aligner.nthreads = self.nthreads
        self.aligner.trim_qual = self.trim_qual
        self.aligner.mmap_enabled = True

        ######## assemble hit processor chain
        chain = FilterLink(self.event_monitor)
        chain.remove_unmapped = self.remove_unmapped
        chain.min_hit_quality = self.min_hit_quality
        if self.__map_only:
            chain.set_next( EmitSamLink(ctx, self.event_monitor) )
        else:
            chain.set_next( MarkDuplicatesEmitter(ctx, self.event_monitor) )
        self.aligner.hit_visitor = chain

        ######## set the path to the reference index
        self.ref_archive = utils.get_ref_archive(ctx.getJobConf())
        self.aligner.reference = self.get_reference_root(self.ref_archive)

        # part of the code is a workaround for accumulating records, see #331
        isplit = InputSplit(ctx.getInputSplit())
        self.split_end = isplit.offset + isplit.length
Example #3
0
    def __init__(self, ctx):
        super(mapper, self).__init__(ctx)
        self.logger = logging.getLogger("seqal")
        self.__get_configuration(ctx)
        logging.basicConfig(level=self.log_level)
        self.event_monitor = HadoopEventMonitor(self.COUNTER_CLASS, logging.getLogger("mapper"), ctx)

        pe = True # single-end sequencen alignment not yet supported by Seqal
        self.hi_rapi = HiRapiAligner('rapi_bwa', paired=pe)

        # opts
        self.hi_rapi.opts.n_threads = self.nthreads
        self.hi_rapi.opts.isize_max = self.max_isize
        if self.min_isize is not None:
            self.hi_rapi.opts.isize_min = self.min_isize
        self.hi_rapi.qoffset = self.hi_rapi.Qenc_Illumina if self.format == "fastq-illumina" else self.hi_rapi.Qenc_Sanger
        # end opts

        self.logger.info("Using the %s aligner plugin, aligner version %s, plugin version %s",
                self.hi_rapi.aligner_name, self.hi_rapi.aligner_version, self.hi_rapi.plugin_version)
        self.logger.info("Working in %s mode", 'paired-end' if pe else 'single-end')

        # allocate space for reads
        self.logger.debug("Reserving batch space for %s reads", self.batch_size)
        self.hi_rapi.reserve_space(self.batch_size) 

        # load reference
        reference_root = self.get_reference_root_from_archive(utils.get_ref_archive(ctx.getJobConf()))
        self.logger.info("Full reference path (prefix): %s", reference_root)
        with self.event_monitor.time_block("Loading reference %s" % reference_root):
            self.hi_rapi.load_ref(reference_root)

        ######## assemble hit processor chain
        chain = RapiFilterLink(self.event_monitor)
        chain.remove_unmapped = self.remove_unmapped
        chain.min_hit_quality = self.min_hit_quality
        if self.__map_only:
            chain.set_next( RapiEmitSamLink(ctx, self.event_monitor, self.hi_rapi) )
        else:
            raise NotImplementedError("Only mapping mode is supported at the moment")
        self.hit_visitor_chain = chain