Example usage for org.apache.commons.exec CommandLine parse

Introduction

In this page you can find the example usage for org.apache.commons.exec CommandLine parse.

Prototype

public static CommandLine parse(final String line, final Map<String, ?> substitutionMap) 

Source Link

Document

Create a command line from a string.

Usage

From source file:edu.cornell.med.icb.goby.modes.RunParallelMode.java

public void execute() throws IOException {
    final Slice slices[] = new Slice[numParts];
    File file = new File(input);
    if (!(file.isFile() && file.exists() && file.canRead())) {
        System.err.println("Input file cannot be read: " + input);
        System.exit(1);/*from w ww  .  jav a  2  s  .co m*/
    }
    int i = 0;
    for (final Slice slice : slices) {

        slices[i++] = new Slice();
    }
    final long fileLength = file.length();
    final long sliceLength = fileLength / numParts;
    long currentOffset = 0;

    for (final Slice slice : slices) {

        slice.startOffset = currentOffset;
        slice.endOffset = currentOffset + sliceLength;
        currentOffset = slice.endOffset;
    }

    final ObjectOpenHashSet<String> allOutputs = new ObjectOpenHashSet<String>();
    final ObjectOpenHashSet<String> allFastq = new ObjectOpenHashSet<String>();

    final DoInParallel loop = new DoInParallel(numParts) {
        IsDone done = new IsDone();

        @Override
        public void action(final DoInParallel forDataAccess, final String inputBasename, final int loopIndex) {
            try {

                CompactToFastaMode ctfm = new CompactToFastaMode();
                ctfm.setInputFilename(input);
                ctfm.setOutputFormat(CompactToFastaMode.OutputFormat.FASTQ);
                ctfm.setStartPosition(slices[loopIndex].startOffset);
                ctfm.setEndPosition(slices[loopIndex].endOffset);

                String s = FilenameUtils.getBaseName(FilenameUtils.removeExtension(input)) + "-"
                        + Integer.toString(loopIndex);
                String fastqFilename = s + "-input.fq";
                allFastq.add(fastqFilename);
                File tmp1 = new File(s + "-tmp");
                tmp1.deleteOnExit();
                File output = new File(s + "-out");
                output.deleteOnExit();
                ctfm.setOutputFilename(fastqFilename);
                LOG.info(String.format("Extracting FASTQ for slice [%d-%d] loopIndex=%d %n",
                        slices[loopIndex].startOffset, slices[loopIndex].endOffset, loopIndex));
                ctfm.execute();
                if (loopIndex > 0) {
                    while (!done.isDone()) {
                        // wait a bit to give the first thread the time to load the database and establish shared memory pool
                        //   System.out.println("sleep 5 thread "+loopIndex);
                        sleep(5);
                    }
                    System.out.println("Thread " + loopIndex + " can now start.");
                }
                final Map<String, String> replacements = new HashMap<String, String>();

                final String outputFilename = output.getName();

                replacements.put("%read.fastq%", fastqFilename);
                replacements.put("%tmp1%", tmp1.getName());
                replacements.put("%output%", outputFilename);
                final String transformedCommand = transform(processPartCommand, replacements);
                final DefaultExecutor executor = new DefaultExecutor();
                OutputStream logStream = null;
                try {
                    logStream = new LoggingOutputStream(getClass(), Level.INFO, "");
                    executor.setStreamHandler(
                            new PumpStreamHandler(new StreamSignal(done, "scanning", logStream)));

                    final CommandLine parse = CommandLine.parse(transformedCommand, replacements);
                    LOG.info("About to execute: " + parse);
                    final int exitValue = executor.execute(parse);
                    LOG.info("Exit value = " + exitValue);
                    if (new File(outputFilename + ".header").exists()) {
                        // found output alignment:
                        System.out.println("found output file: " + outputFilename);
                        allOutputs.add(outputFilename + ".header");
                    } else {
                        System.out.println("Warning: did not find output alignment: " + outputFilename);
                    }
                } finally {
                    IOUtils.closeQuietly(logStream);
                    // remove the fastq file
                    new File(fastqFilename).delete();
                }

            } catch (IOException e) {
                LOG.error("Error processing index " + loopIndex + ", " + inputBasename, e);
            }
        }
    };
    String[] parts = new String[numParts];

    for (int j = 0; j < numParts; j++) {
        parts[j] = Integer.toString(j);
    }
    try {
        loop.execute(true, parts);
    } catch (Exception e) {
        System.err.println("An error occurred executing a parallel command: ");
        e.printStackTrace();
    }

    System.out.printf("Preparing to concatenate %d outputs..%n", allOutputs.size());
    final ConcatenateAlignmentMode concat = new ConcatenateAlignmentMode();
    concat.setInputFileNames(allOutputs.toArray(new String[allOutputs.size()]));
    concat.setOutputFilename(output);
    concat.setAdjustQueryIndices(false);
    concat.setAdjustSampleIndices(false);
    concat.execute();

}

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