358 lines
16 KiB
Java
Executable File
358 lines
16 KiB
Java
Executable File
package org.broadinstitute.sting.gatk;
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import net.sf.picard.reference.ReferenceSequenceFile;
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import net.sf.picard.reference.ReferenceSequenceFileFactory;
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import net.sf.samtools.SAMFileReader;
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import net.sf.samtools.SAMFileReader.ValidationStringency;
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import org.apache.log4j.Logger;
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import org.broadinstitute.sting.gatk.executive.MicroScheduler;
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import org.broadinstitute.sting.gatk.refdata.ReferenceOrderedData;
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import org.broadinstitute.sting.gatk.refdata.ReferenceOrderedDatum;
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import org.broadinstitute.sting.gatk.refdata.RODIterator;
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import org.broadinstitute.sting.gatk.refdata.IntervalRodIterator;
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import org.broadinstitute.sting.gatk.traversals.*;
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import org.broadinstitute.sting.gatk.walkers.*;
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import org.broadinstitute.sting.utils.*;
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import org.broadinstitute.sting.utils.cmdLine.ArgumentException;
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import java.util.ArrayList;
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import java.util.List;
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import java.io.File;
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public class GenomeAnalysisEngine {
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// our instance of this genome analysis toolkit; it's used by other classes to extract the traversal engine
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// TODO: public static without final tends to indicate we're thinking about this the wrong way
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public static GenomeAnalysisEngine instance;
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// our traversal engine
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private TraversalEngine engine = null;
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// the level of debugging we're using
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public boolean DEBUGGING = false;
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// our argument collection
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private final GATKArgumentCollection argCollection;
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/** Collection of output streams used by the walker. */
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private OutputTracker outputTracker = null;
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/** our log, which we want to capture anything from this class */
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private static Logger logger = Logger.getLogger(GenomeAnalysisEngine.class);
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/** the return value from our walker */
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private Object walkerReturn = null;
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/**
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* our constructor, where all the work is done
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* <p/>
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* legacy traversal types are sent to legacyTraversal function; as we move more of the traversals to the
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* new MicroScheduler class we'll be able to delete that function.
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*
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* @param args the argument collection, where we get all our setup information from
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* @param my_walker the walker we're running with
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*/
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public GenomeAnalysisEngine(GATKArgumentCollection args, Walker my_walker) {
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// validate our parameters
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if (args == null || my_walker == null) {
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throw new StingException("Neither the GATKArgumentCollection or the Walker passed to GenomeAnalysisEngine can be null.");
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}
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// save our argument parameter
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this.argCollection = args;
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// make sure our instance variable points to this analysis engine
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instance = this;
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// our reference ordered data collection
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List<ReferenceOrderedData<? extends ReferenceOrderedDatum>> rods = new ArrayList<ReferenceOrderedData<? extends ReferenceOrderedDatum>>();
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//
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// please don't use these in the future, use the new syntax <- if we're not using these please remove them
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//
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if (argCollection.DBSNPFile != null) bindConvenienceRods("dbSNP", "dbsnp", argCollection.DBSNPFile);
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if (argCollection.HAPMAPFile != null)
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bindConvenienceRods("hapmap", "HapMapAlleleFrequencies", argCollection.HAPMAPFile);
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if (argCollection.HAPMAPChipFile != null)
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bindConvenienceRods("hapmap-chip", "GFF", argCollection.HAPMAPChipFile);
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if ( argCollection.intervals != null )
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bindConvenienceRods("interval", "Intervals", argCollection.intervals.replaceAll(",", ""));
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// parse out the rod bindings
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ReferenceOrderedData.parseBindings(logger, argCollection.RODBindings, rods);
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// Validate the walker inputs against the walker.
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validateInputsAgainstWalker(my_walker, argCollection, rods);
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// create the output streams
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initializeOutputStreams( my_walker );
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// our microscheduler, which is in charge of running everything
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MicroScheduler microScheduler = null;
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// if we're a read or a locus walker, we use the new system. Right now we have complicated
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// branching based on the input data, but this should disapear when all the traversals are switched over
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if (my_walker instanceof LocusWalker || my_walker instanceof ReadWalker) {
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microScheduler = createMicroscheduler(my_walker, rods);
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} else { // we have an old style traversal, once we're done return
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legacyTraversal(my_walker, rods);
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return;
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}
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// Prepare the sort ordering w.r.t. the sequence dictionary
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if (argCollection.referenceFile != null) {
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final ReferenceSequenceFile refFile = ReferenceSequenceFileFactory.getReferenceSequenceFile(argCollection.referenceFile);
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GenomeLoc.setupRefContigOrdering(refFile);
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}
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// Determine the validation stringency. Default to ValidationStringency.STRICT.
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ValidationStringency strictness = getValidationStringency();
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logger.info("Strictness is " + strictness);
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// perform validation steps that are common to all the engines
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genericEngineSetup(strictness);
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// parse out any genomic location they've provided
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//List<GenomeLoc> locationsList = setupIntervalRegion();
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List<GenomeLoc> locationsList = engine.getLocations();
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GenomeLocSortedSet locs = null;
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if (locationsList != null)
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locs = GenomeLocSortedSet.createSetFromList(locationsList);
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// excute the microscheduler, storing the results
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walkerReturn = microScheduler.execute(my_walker, locs, argCollection.maximumEngineIterations);
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}
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/**
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* this is to accomdate the older style traversals, that haven't been converted over to the new system. Putting them
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* into their own function allows us to deviate in the two behaviors so the new style traversals aren't limited to what
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* the old style does. As traversals are converted, this function should disappear.
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*
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* @param my_walker
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* @param rods
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*/
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private void legacyTraversal(Walker my_walker, List<ReferenceOrderedData<? extends ReferenceOrderedDatum>> rods) {
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if (my_walker instanceof LocusWindowWalker) {
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this.engine = new TraverseByLocusWindows(argCollection.samFiles, argCollection.referenceFile, rods);
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} else if (my_walker instanceof DuplicateWalker) {
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// we're a duplicate walker
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this.engine = new TraverseDuplicates(argCollection.samFiles, argCollection.referenceFile, rods);
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} else {
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throw new RuntimeException("Unexpected walker type: " + my_walker);
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}
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// Prepare the sort ordering w.r.t. the sequence dictionary
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if (argCollection.referenceFile != null) {
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final ReferenceSequenceFile refFile = ReferenceSequenceFileFactory.getReferenceSequenceFile(argCollection.referenceFile);
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GenomeLoc.setupRefContigOrdering(refFile);
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}
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// Determine the validation stringency. Default to ValidationStringency.STRICT.
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ValidationStringency strictness = getValidationStringency();
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logger.info("Strictness is " + strictness);
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genericEngineSetup(strictness);
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// store the results of the walker run
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walkerReturn = engine.traverse(my_walker);
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}
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/**
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* setup a microscheduler
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*
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* @param my_walker our walker of type LocusWalker
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* @param rods the reference order data
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* @return a new microscheduler
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*/
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private MicroScheduler createMicroscheduler(Walker my_walker, List<ReferenceOrderedData<? extends ReferenceOrderedDatum>> rods) {
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// the mircoscheduler to return
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MicroScheduler microScheduler = null;
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// we need to verify different parameter based on the walker type
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if (my_walker instanceof LocusWalker) {
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// create the MicroScheduler
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if( argCollection.walkAllLoci )
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Utils.scareUser("Argument --all_loci is deprecated. Please annotate your walker with @By(DataSource.REFERENCE) to perform a by-reference traversal.");
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microScheduler = MicroScheduler.create(my_walker, new Reads(argCollection), argCollection.referenceFile, rods, argCollection.numberOfThreads);
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engine = microScheduler.getTraversalEngine();
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}
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else if (my_walker instanceof ReadWalker) {
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if (argCollection.referenceFile == null)
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Utils.scareUser(String.format("Locus-based traversals require a reference file but none was given"));
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microScheduler = MicroScheduler.create(my_walker, new Reads(argCollection), argCollection.referenceFile, rods, argCollection.numberOfThreads);
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engine = microScheduler.getTraversalEngine();
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}
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return microScheduler;
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}
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/**
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* commands that get executed for each engine, regardless of the type
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*
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* @param strictness our current strictness level
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*/
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private void genericEngineSetup(ValidationStringency strictness) {
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engine.setStrictness(strictness);
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engine.setMaxReads(argCollection.maximumEngineIterations);
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engine.setFilterZeroMappingQualityReads(argCollection.filterZeroMappingQualityReads);
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// we default interval files over the genome region string
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if (argCollection.intervals != null) {
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engine.setLocation(parseIntervalRegion(argCollection.intervals, false));
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}
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engine.setReadFilters(new Reads(argCollection));
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engine.setThreadedIO(argCollection.enabledThreadedIO);
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engine.setWalkOverAllSites(argCollection.walkAllLoci);
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engine.initialize();
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}
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/**
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* setup the interval regions, from either the interval file of the genome region string
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*
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* @return a list of genomeLoc representing the interval file
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*/
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public static List<GenomeLoc> parseIntervalRegion(final String intervalsString, boolean quiet ) {
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List<GenomeLoc> locs = null;
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if ( intervalsString != null) {
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if (new File(intervalsString).exists()) {
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if (! quiet) logger.info("Intervals argument specifies a file. Loading intervals from file.");
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locs = GenomeLoc.IntervalFileToList(intervalsString);
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} else {
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if (! quiet) logger.info("Intervals argument does not specify a file. Trying to parse it as a simple string.");
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locs = GenomeLoc.parseGenomeLocs(intervalsString);
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}
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}
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return locs;
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}
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private void validateInputsAgainstWalker(Walker walker,
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GATKArgumentCollection arguments,
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List<ReferenceOrderedData<? extends ReferenceOrderedDatum>> rods) {
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String walkerName = WalkerManager.getWalkerName(walker.getClass());
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// Check what the walker says is required against what was provided on the command line.
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if( WalkerManager.isRequired(walker,DataSource.READS) && (arguments.samFiles == null || arguments.samFiles.size() == 0) )
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throw new ArgumentException(String.format("Walker %s requires reads but none were provided. If this is incorrect, alter the walker's @Requires annotation.",walkerName));
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if( WalkerManager.isRequired(walker,DataSource.REFERENCE) && arguments.referenceFile == null )
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throw new ArgumentException(String.format("Walker %s requires a reference but none was provided. If this is incorrect, alter the walker's @Requires annotation.",walkerName));
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// Check what the walker says is allowed against what was provided on the command line.
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if( (arguments.samFiles != null && arguments.samFiles.size() > 0) && !WalkerManager.isAllowed(walker,DataSource.READS) )
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throw new ArgumentException(String.format("Walker %s does not allow reads but reads were provided. If this is incorrect, alter the walker's @Allows annotation",walkerName));
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if( arguments.referenceFile != null && !WalkerManager.isAllowed(walker,DataSource.REFERENCE) )
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throw new ArgumentException(String.format("Walker %s does not allow a reference but one was provided. If this is incorrect, alter the walker's @Allows annotation",walkerName));
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// Check to make sure that all required metadata is present.
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List<RMD> allRequired = WalkerManager.getRequiredMetaData(walker);
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for( RMD required: allRequired ) {
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boolean found = false;
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for( ReferenceOrderedData<? extends ReferenceOrderedDatum> rod: rods ) {
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if( rod.matches(required.name(),required.type()) )
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found = true;
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}
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if( !found )
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throw new ArgumentException(String.format("Unable to find reference metadata (%s,%s)",required.name(),required.type()));
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}
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// Check to see that no forbidden rods are present.
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for( ReferenceOrderedData<? extends ReferenceOrderedDatum> rod: rods ) {
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if( !WalkerManager.isAllowed(walker,rod) )
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throw new ArgumentException(String.format("Walker does not allow access to metadata: %s. If this is correct, change the @Allows metadata",rod.getName()));
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}
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}
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/**
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* Default to ValidationStringency.STRICT.
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*
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* @return the validation stringency
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*/
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private ValidationStringency getValidationStringency() {
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ValidationStringency strictness;
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try {
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strictness = Enum.valueOf(ValidationStringency.class, argCollection.strictnessLevel);
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}
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catch (IllegalArgumentException ex) {
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strictness = ValidationStringency.STRICT;
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}
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return strictness;
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}
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/**
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* Default to 5 (based on research by Alec Wysoker)
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*
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* @return the BAM compression
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*/
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public int getBAMCompression() {
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return (argCollection.BAMcompression == null ||
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argCollection.BAMcompression < 1 ||
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argCollection.BAMcompression > 8) ? 5 : argCollection.BAMcompression;
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}
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/**
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* Convenience function that binds RODs using the old-style command line parser to the new style list for
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* a uniform processing.
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*
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* @param name
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* @param type
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* @param file
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*/
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private void bindConvenienceRods(final String name, final String type, final String file) {
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argCollection.RODBindings.add(Utils.join(",", new String[]{name, type, file}));
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}
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/** Initialize the output streams as specified by the user. */
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private void initializeOutputStreams( Walker walker ) {
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outputTracker = (argCollection.outErrFileName != null) ? new OutputTracker(argCollection.outErrFileName, argCollection.outErrFileName)
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: new OutputTracker(argCollection.outFileName, argCollection.errFileName);
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walker.initializeOutputStreams(outputTracker);
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}
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/**
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* Gets the output tracker. Tracks data available to a given walker.
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*
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* @return The output tracker.
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*/
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public OutputTracker getOutputTracker() {
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return outputTracker;
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}
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/**
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* This function is deprecated in the new traversal engines, if you need to get the header
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* please get the engine and then use the getHeader function
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*
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* @return
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*/
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@Deprecated
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public SAMFileReader getSamReader() {
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return this.engine.getSamReader();
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}
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public TraversalEngine getEngine() {
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return this.engine;
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}
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/** Gets the collection of GATK main application arguments for enhanced walker validation. */
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public GATKArgumentCollection getArguments() {
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return this.argCollection;
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}
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/**
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* Get's the return value of the walker
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*
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* @return an Object representing the return value of the walker
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*/
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public Object getWalkerReturn() {
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return walkerReturn;
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}
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}
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