/**
* Calculates the reference coordinate for the end of the read taking into account soft clips but
* not hard clips.
*
* <p>Note: getUnclippedEnd() adds soft and hard clips, this function only adds soft clips.
*
* @param read the read
* @param cigar the read's cigar
* <p>Note: this overload of the function takes the cigar as input for speed because getCigar
* is an expensive operation. Most callers should use the overload that does not take the
* cigar.
* @return the unclipped end of the read taking soft clips (but not hard clips) into account
*/
public static int getSoftEnd(final GATKRead read, final Cigar cigar) {
Utils.nonNull(read, "read");
Utils.nonNull(cigar, "cigar");
boolean foundAlignedBase = false;
int softEnd = read.getEnd();
final List<CigarElement> cigs = cigar.getCigarElements();
for (int i = cigs.size() - 1; i >= 0; --i) {
final CigarElement cig = cigs.get(i);
final CigarOperator op = cig.getOperator();
if (op
== CigarOperator
.SOFT_CLIP) { // assumes the soft clip that we found is at the end of the aligned read
softEnd += cig.getLength();
} else if (op != CigarOperator.HARD_CLIP) {
foundAlignedBase = true;
break;
}
}
if (!foundAlignedBase) { // for example 64H14S, the soft end is actually the same as the
// alignment end
softEnd = read.getEnd();
}
return softEnd;
}
/**
* Combines the right table into the left table, in-place (without making a copy)
*
* @param left first table to combine
* @param right second table to combine
* @return modified version of left with the contents of right incorporated into it
*/
public static RecalibrationTables inPlaceCombine(
final RecalibrationTables left, final RecalibrationTables right) {
Utils.nonNull(left);
Utils.nonNull(right);
return left.combine(right);
}
/**
* Do the full tangent normalization process given proportional coverage data.
*
* <p>This includes:
*
* <ul>
* <li>normalization by target factors
* <li>projection of the normalized coverage profile into the hyperplane from the PoN
* </ul>
*
* @param pon -- never {@code null}
* @param pcov -- never {@code null}. Must contain data for at least one sample.
* @param ctx spark context. Use {@code null} if no context is available
* @return never {@code null}
*/
public static TangentNormalizationResult tangentNormalizePcov(
final PoN pon, final ReadCountCollection pcov, final JavaSparkContext ctx) {
Utils.nonNull(pon, "PoN cannot be null.");
Utils.nonNull(pcov, "input pcov read counts cannot be null when creating a coverage profile.");
ParamUtils.isPositive(
pcov.columnNames().size(), "input cov profile column names cannot be an empty list.");
final ReadCountCollection coverageProfile = createCoverageProfile(pon, pcov);
return TangentNormalizer.tangentNormalize(pon, coverageProfile, ctx);
}
/**
* Set the base qualities from a string of ASCII encoded values
*
* @param read read whose base qualities should be set
* @param baseQualityString ASCII encoded (encoded as a FASTQ string) values of base qualities.
*/
public static void setBaseQualityString(final GATKRead read, final String baseQualityString) {
Utils.nonNull(read);
Utils.nonNull(baseQualityString);
if (SAMRecord.NULL_QUALS_STRING.equals(baseQualityString)) {
read.setBaseQualities(SAMRecord.NULL_QUALS);
} else {
read.setBaseQualities(SAMUtils.fastqToPhred(baseQualityString));
}
}
/**
* Creates a new target-out-info enum value given the composer function reference a the list of
* output column names.
*
* @param composer the composer lambda reference.
* @param headerNames list of info column names in the order these are going to be lay out in
* output files.
* @throws IllegalArgumentException if {@code composer} or {@code headerNames} are {@code null},
* or {@code headerNames} contains a {@code null}.
*/
TargetOutInfo(final Composer composer, final String... headerNames) {
this.composer = Utils.nonNull(composer, "the info string composer cannot be null");
this.headerNames =
Collections.unmodifiableList(
Arrays.asList(
Utils.nonNull(headerNames, "the header name list provided cannot be null")));
if (this.headerNames.stream().anyMatch(Objects::isNull)) {
throw new IllegalArgumentException("the input header-name cannot contain nulls");
}
}
/**
* Combines the two tables into a new table (allocating a new table in the process)
*
* @param left first table to combine
* @param right second table to combine
* @return a new table with the merged contents of left and right
*/
public static RecalibrationTables safeCombine(
final RecalibrationTables left, final RecalibrationTables right) {
Utils.nonNull(left);
Utils.nonNull(right);
final RecalibrationTables newTable =
new RecalibrationTables(left.covariates, left.numReadGroups);
newTable.combine(left);
newTable.combine(right);
return newTable;
}
/**
* Create a common SAMFileWriter from a factory for use with GATK tools. Assumes that if the
* factory has been set to create an index, the header must be set to coordinate sorted.
*
* @param outputFile if this file has a .cram extension then a reference is required. Can not be
* null.
* @param referenceFile the reference source to use. Can not be null if a output file has a .cram
* extension.
* @param header header to be used for the output writer
* @param preSorted if true then records must already be sorted to match the header sort order
* @param factory SAMFileWriterFactory factory to use
* @return SAMFileWriter
*/
public static SAMFileWriter createCommonSAMWriterFromFactory(
final SAMFileWriterFactory factory,
final File outputFile,
final File referenceFile,
final SAMFileHeader header,
final boolean preSorted) {
Utils.nonNull(outputFile);
Utils.nonNull(header);
if (null == referenceFile && outputFile.getName().endsWith(CramIO.CRAM_FILE_EXTENSION)) {
throw new UserException("A reference file is required for writing CRAM files");
}
return factory.makeWriter(header.clone(), preSorted, outputFile, referenceFile);
}
/**
* Calculates the reference coordinate for the beginning of the read taking into account soft
* clips but not hard clips.
*
* <p>Note: getUnclippedStart() adds soft and hard clips, this function only adds soft clips.
*
* @param read the read
* @param cigar the read's cigar
* <p>Note: this overload of the function takes the cigar as input for speed because getCigar
* is an expensive operation. Most callers should use the overload that does not take the
* cigar.
* @return the unclipped start of the read taking soft clips (but not hard clips) into account
*/
public static int getSoftStart(final GATKRead read, final Cigar cigar) {
Utils.nonNull(read, "read");
Utils.nonNull(cigar, "cigar");
int softStart = read.getStart();
for (final CigarElement cig : cigar.getCigarElements()) {
final CigarOperator op = cig.getOperator();
if (op == CigarOperator.SOFT_CLIP) {
softStart -= cig.getLength();
} else if (op != CigarOperator.HARD_CLIP) {
break;
}
}
return softStart;
}
/**
* Returns the base qualities for the read as a string.
*
* @param read read whose base qualities should be returned
* @return Base qualities string as printable ASCII values (encoded as a FASTQ string).
*/
public static String getBaseQualityString(final GATKRead read) {
Utils.nonNull(read);
if (Arrays.equals(SAMRecord.NULL_QUALS, read.getBaseQualities())) {
return SAMRecord.NULL_QUALS_STRING;
}
return SAMUtils.phredToFastq(read.getBaseQualities());
}
private static ReadCountCollection createCoverageProfile(
final PoN pon, final ReadCountCollection inputReadCounts) {
Utils.nonNull(pon, "PoN cannot be null.");
Utils.nonNull(
inputReadCounts, "input read counts cannot be null when creating a coverage profile.");
ParamUtils.isPositive(
inputReadCounts.columnNames().size(),
"inputReadCounts column names cannot be an empty list.");
final Case2PoNTargetMapper targetMapper =
new Case2PoNTargetMapper(inputReadCounts.targets(), pon.getTargetNames());
final RealMatrix inputCounts = targetMapper.fromCaseToPoNCounts(inputReadCounts.counts());
final RealMatrix targetNormalizedCounts = pon.factorNormalization(inputCounts);
return targetMapper.fromPoNtoCaseCountCollection(
targetNormalizedCounts, inputReadCounts.columnNames());
}
@Override
protected AFCalculationResult computeLog10PNonRef(
final VariantContext vc,
final int defaultPloidy,
final double[] log10AlleleFrequencyPriors,
final StateTracker stateTracker) {
Utils.nonNull(vc, "vc is null");
Utils.nonNull(log10AlleleFrequencyPriors, "log10AlleleFrequencyPriors is null");
Utils.nonNull(stateTracker, "stateTracker is null");
final int numAlternateAlleles = vc.getNAlleles() - 1;
final List<double[]> genotypeLikelihoods = getGLs(vc.getGenotypes(), true);
final int numSamples = genotypeLikelihoods.size() - 1;
final int numChr = 2 * numSamples;
// queue of AC conformations to process
final Deque<ExactACset> ACqueue = new LinkedList<>();
// mapping of ExactACset indexes to the objects
final Map<ExactACcounts, ExactACset> indexesToACset = new HashMap<>(numChr + 1);
// add AC=0 to the queue
final int[] zeroCounts = new int[numAlternateAlleles];
final ExactACset zeroSet = new ExactACset(numSamples + 1, new ExactACcounts(zeroCounts));
ACqueue.add(zeroSet);
indexesToACset.put(zeroSet.getACcounts(), zeroSet);
while (!ACqueue.isEmpty()) {
// compute log10Likelihoods
final ExactACset set = ACqueue.remove();
calculateAlleleCountConformation(
set,
genotypeLikelihoods,
numChr,
ACqueue,
indexesToACset,
log10AlleleFrequencyPriors,
stateTracker);
// clean up memory
indexesToACset.remove(set.getACcounts());
}
return getResultFromFinalState(vc, log10AlleleFrequencyPriors, stateTracker);
}
/**
* Returns the value that corresponds to a given implementation calculator class.
*
* @param clazz the target class.
* @throws IllegalArgumentException if {@code clazz} is {@code null} or if it is abstract.
* @return never {@code null}.
*/
public static AFCalculatorImplementation fromCalculatorClass(
final Class<? extends AFCalculator> clazz) {
Utils.nonNull(clazz, "input class cannot be null");
Utils.validateArg(
!Modifier.isAbstract(clazz.getModifiers()),
"class " + clazz.getCanonicalName() + " should not be abstract");
// Using iteration instead of a static map to avoid static state.
for (final AFCalculatorImplementation impl : AFCalculatorImplementation.values()) {
if (clazz.equals(impl.newInstance().getClass())) {
return impl;
}
}
throw new IllegalArgumentException(
"Attempt to retrieve AFCalculatorImplementation instance from a non-registered calculator class "
+ clazz.getName());
}
/**
* Constructs the target collection from an target-file passed by the user.
*
* @return never {@code null}.
*/
private TargetCollection<Target> resolveTargetsFromFile() {
Utils.regularReadableUserFile(targetsFile);
logger.log(
Level.INFO,
String.format(
"Reading target intervals from targets file '%s' ...", targetsFile.getAbsolutePath()));
final List<Target> targets = TargetTableReader.readTargetFile(targetsFile);
return new HashedListTargetCollection<>(targets);
}
/**
* Constructs a new instance given all its properties
*
* @param afCalculatorSupplier the calculator class that realizes this implementation.
* @param requiredPloidy the required ploidy; zero or greater or {@link #UNBOUND_PLOIDY} to
* indicate that any ploidy is supported.
* @param maxAltAlleles the maximum alternative alleles; zero or greater or {@link
* #UNBOUND_ALTERNATIVE_ALLELE_COUNT} to indicate that any maximum number of alternative
* alleles is supported.
*/
AFCalculatorImplementation(
final Supplier<AFCalculator> afCalculatorSupplier,
final int requiredPloidy,
final int maxAltAlleles) {
Utils.nonNull(afCalculatorSupplier);
this.afCalculatorSupplier = afCalculatorSupplier;
this.requiredPloidy = requiredPloidy;
this.maxAltAlleles = maxAltAlleles;
}
/**
* Create a common SAMFileWriter for use with GATK tools.
*
* @param outputFile - if this file has a .cram extension then a reference is required. Can not be
* null.
* @param referenceFile - the reference source to use. Can not be null if a output file has a
* .cram extension.
* @param header - header to be used for the output writer
* @param preSorted - if true then the records must already be sorted to match the header sort
* order
* @param createOutputBamIndex - if true an index will be created for .BAM and .CRAM files
* @param createMD5 - if true an MD5 file will be created
* @return SAMFileWriter
*/
public static SAMFileWriter createCommonSAMWriter(
final File outputFile,
final File referenceFile,
final SAMFileHeader header,
final boolean preSorted,
boolean createOutputBamIndex,
final boolean createMD5) {
Utils.nonNull(outputFile);
Utils.nonNull(header);
if (createOutputBamIndex && header.getSortOrder() != SAMFileHeader.SortOrder.coordinate) {
logger.warn(
"Skipping index file creation for: "
+ outputFile.getAbsolutePath()
+ ". Index file creation requires reads in coordinate sorted order.");
createOutputBamIndex = false;
}
final SAMFileWriterFactory factory =
new SAMFileWriterFactory().setCreateIndex(createOutputBamIndex).setCreateMd5File(createMD5);
return ReadUtils.createCommonSAMWriterFromFactory(
factory, outputFile, referenceFile, header, preSorted);
}
/**
* Merges the argument into this histogram generator. Returns the modified 'this' object. Note:
* you can only merge HistogramGenerator is they have the same 'useOriginalQualities' value.
*/
public HistogramGenerator merge(final HistogramGenerator hg2) {
Utils.nonNull(hg2);
if (this.useOriginalQualities != hg2.useOriginalQualities) {
throw new IllegalArgumentException(
"unequal useOriginalQualities. This has " + this.useOriginalQualities);
}
ensureArraysBigEnough(hg2.maxLengthSoFar);
for (int i = 0; i < hg2.firstReadTotalsByCycle.length; i++) {
this.firstReadTotalsByCycle[i] += hg2.firstReadTotalsByCycle[i];
}
for (int i = 0; i < hg2.secondReadTotalsByCycle.length; i++) {
this.secondReadTotalsByCycle[i] += hg2.secondReadTotalsByCycle[i];
}
for (int i = 0; i < hg2.firstReadCountsByCycle.length; i++) {
this.firstReadCountsByCycle[i] += hg2.firstReadCountsByCycle[i];
}
for (int i = 0; i < hg2.secondReadCountsByCycle.length; i++) {
this.secondReadCountsByCycle[i] += hg2.secondReadCountsByCycle[i];
}
return this;
}
public Pulldown(final SAMFileHeader header) {
this.header = Utils.nonNull(header, "SAMFileHeader must be supplied.");
;
}
/**
* Calculates the reference coordinate for the beginning of the read taking into account soft
* clips but not hard clips.
*
* <p>Note: getUnclippedStart() adds soft and hard clips, this function only adds soft clips.
*
* @return the unclipped start of the read taking soft clips (but not hard clips) into account
*/
public static int getSoftStart(final GATKRead read) {
Utils.nonNull(read);
return getSoftStart(read, read.getCigar());
}
/**
* Transforms and composes the string representation of an individual count.
*
* <p>The output string must be fully formatted human friendly representation of the transformed
* value.
*
* @param count the individual count value.
* @param columnTotal the corresponding column total sum.
* @return never {@code null}.
* @throws IllegalArgumentException if {@code count} is less than 0 or greater than {@code
* columnTotal}.
*/
protected String apply(final int count, final long columnTotal) {
ParamUtils.isPositiveOrZero(count, "the count cannot less than 0");
Utils.validateArg(count <= columnTotal, "the count cannot be larger than the column total");
return operator.apply(count, columnTotal);
}
/**
* Composes the target information output string.
*
* @param index of the target in the collection.
* @param collection the target containing collection.
* @throws IllegalArgumentException if either {@code target} or {@code collection} is {@code
* null}.
*/
protected String composeTargetOutInfoString(
final int index, final TargetCollection<Target> collection) {
Utils.nonNull(collection, "the collection cannot be null");
Utils.validIndex(index, collection.targetCount());
return composer.apply(index, collection);
}
/**
* Constructor that reads (sequence, position, reference count, alternate count) from the
* specified file and uses external SAMFile header to construct Pulldown.
*
* @param inputFile file to read from
* @param header SAMFile header for IntervalList
*/
public Pulldown(final File inputFile, final SAMFileHeader header) {
super(inputFile);
this.header = Utils.nonNull(header, "SAMFileHeader must be supplied.");
}
public VariantTypesVariantFilter(Set<VariantContext.Type> includeTypes) {
Utils.nonNull(includeTypes);
sampleTypes = includeTypes;
}
/**
* Tangent normalize a coverage profile.
*
* <p>Notes about the Spark tangent normalization can be found in docs/PoN/
*
* @param pon Not {@code null}
* @param targetFactorNormalizedCounts ReadCountCollection of counts that have already been
* normalized fully (typically, including the target factor normalization). I.e. a coverage
* profile The column names should be intact. Not {@code null} See {@link
* TangentNormalizer::createCoverageProfile}
* @return never {@code null}
*/
private static TangentNormalizationResult tangentNormalize(
final PoN pon, final ReadCountCollection targetFactorNormalizedCounts, JavaSparkContext ctx) {
Utils.nonNull(pon, "PoN cannot be null.");
Utils.nonNull(targetFactorNormalizedCounts, "targetFactorNormalizedCounts cannot be null.");
Utils.nonNull(
targetFactorNormalizedCounts.columnNames(),
"targetFactorNormalizedCounts column names cannot be null.");
ParamUtils.isPositive(
targetFactorNormalizedCounts.columnNames().size(),
"targetFactorNormalizedCounts column names cannot be an empty list.");
final Case2PoNTargetMapper targetMapper =
new Case2PoNTargetMapper(targetFactorNormalizedCounts.targets(), pon.getPanelTargetNames());
// The input counts with rows (targets) sorted so that they match the PoN's order.
final RealMatrix tangentNormalizationRawInputCounts =
targetMapper.fromCaseToPoNCounts(targetFactorNormalizedCounts.counts());
// We prepare the counts for tangent normalization.
final RealMatrix tangentNormalizationInputCounts =
composeTangentNormalizationInputMatrix(tangentNormalizationRawInputCounts);
if (ctx == null) {
// Calculate the beta-hats for the input read count columns (samples).
logger.info("Calculating beta hats...");
final RealMatrix tangentBetaHats =
pon.betaHats(tangentNormalizationInputCounts, true, EPSILON);
// Actual tangent normalization step.
logger.info(
"Performing actual tangent normalization ("
+ tangentNormalizationInputCounts.getColumnDimension()
+ " columns)...");
final RealMatrix tangentNormalizedCounts =
pon.tangentNormalization(tangentNormalizationInputCounts, tangentBetaHats, true);
// Output the tangent normalized counts.
logger.info("Post-processing tangent normalization results...");
final ReadCountCollection tangentNormalized =
targetMapper.fromPoNtoCaseCountCollection(
tangentNormalizedCounts, targetFactorNormalizedCounts.columnNames());
final ReadCountCollection preTangentNormalized =
targetMapper.fromPoNtoCaseCountCollection(
tangentNormalizationInputCounts, targetFactorNormalizedCounts.columnNames());
return new TangentNormalizationResult(
tangentNormalized, preTangentNormalized, tangentBetaHats, targetFactorNormalizedCounts);
} else {
/*
Using Spark: the code here is a little more complex for optimization purposes.
Please see notes in docs/PoN ...
Ahat^T = (C^T P^T) A^T
Therefore, C^T is the RowMatrix
pinv: P
panel: A
projection: Ahat
cases: C
betahat: C^T P^T
tangentNormalizedCounts: C - Ahat
*/
final RealMatrix pinv = pon.getReducedPanelPInverseCounts();
final RealMatrix panel = pon.getReducedPanelCounts();
// Make the C^T a distributed matrix (RowMatrix)
final RowMatrix caseTDistMat =
SparkConverter.convertRealMatrixToSparkRowMatrix(
ctx, tangentNormalizationInputCounts.transpose(), TN_NUM_SLICES_SPARK);
// Spark local matrices (transposed)
final Matrix pinvTLocalMat =
new DenseMatrix(
pinv.getRowDimension(),
pinv.getColumnDimension(),
Doubles.concat(pinv.getData()),
true)
.transpose();
final Matrix panelTLocalMat =
new DenseMatrix(
panel.getRowDimension(),
panel.getColumnDimension(),
Doubles.concat(panel.getData()),
true)
.transpose();
// Calculate the projection transpose in a distributed matrix, then convert to Apache Commons
// matrix (not transposed)
final RowMatrix betahatDistMat = caseTDistMat.multiply(pinvTLocalMat);
final RowMatrix projectionTDistMat = betahatDistMat.multiply(panelTLocalMat);
final RealMatrix projection =
SparkConverter.convertSparkRowMatrixToRealMatrix(
projectionTDistMat, tangentNormalizationInputCounts.transpose().getRowDimension())
.transpose();
// Subtract the cases from the projection
final RealMatrix tangentNormalizedCounts =
tangentNormalizationInputCounts.subtract(projection);
// Construct the result object and return it with the correct targets.
final ReadCountCollection tangentNormalized =
targetMapper.fromPoNtoCaseCountCollection(
tangentNormalizedCounts, targetFactorNormalizedCounts.columnNames());
final ReadCountCollection preTangentNormalized =
targetMapper.fromPoNtoCaseCountCollection(
tangentNormalizationInputCounts, targetFactorNormalizedCounts.columnNames());
final RealMatrix tangentBetaHats =
SparkConverter.convertSparkRowMatrixToRealMatrix(
betahatDistMat, tangentNormalizedCounts.getColumnDimension());
return new TangentNormalizationResult(
tangentNormalized,
preTangentNormalized,
tangentBetaHats.transpose(),
targetFactorNormalizedCounts);
}
}