@Override
public Iterator<String> iterator() {
return IndexedIterable.create(this).iterator();
}
private static File makeIndexFiles(
final List<IndexableAdapter> indexes,
final File outDir,
final ProgressIndicator progress,
final List<String> mergedDimensions,
final List<String> mergedMetrics,
final Function<ArrayList<Iterable<Rowboat>>, Iterable<Rowboat>> rowMergerFn)
throws IOException {
Map<String, String> metricTypes = Maps.newTreeMap(Ordering.<String>natural().nullsFirst());
for (IndexableAdapter adapter : indexes) {
for (String metric : adapter.getAvailableMetrics()) {
metricTypes.put(metric, adapter.getMetricType(metric));
}
}
final Interval dataInterval;
/** *********** Main index.drd file ************* */
progress.progress();
long startTime = System.currentTimeMillis();
File indexFile = new File(outDir, "index.drd");
FileOutputStream fileOutputStream = null;
FileChannel channel = null;
try {
fileOutputStream = new FileOutputStream(indexFile);
channel = fileOutputStream.getChannel();
channel.write(ByteBuffer.wrap(new byte[] {IndexIO.CURRENT_VERSION_ID}));
GenericIndexed.fromIterable(mergedDimensions, GenericIndexed.stringStrategy)
.writeToChannel(channel);
GenericIndexed.fromIterable(mergedMetrics, GenericIndexed.stringStrategy)
.writeToChannel(channel);
DateTime minTime = new DateTime(Long.MAX_VALUE);
DateTime maxTime = new DateTime(0l);
for (IndexableAdapter index : indexes) {
minTime = JodaUtils.minDateTime(minTime, index.getDataInterval().getStart());
maxTime = JodaUtils.maxDateTime(maxTime, index.getDataInterval().getEnd());
}
dataInterval = new Interval(minTime, maxTime);
serializerUtils.writeString(channel, String.format("%s/%s", minTime, maxTime));
} finally {
Closeables.closeQuietly(channel);
channel = null;
Closeables.closeQuietly(fileOutputStream);
fileOutputStream = null;
}
IndexIO.checkFileSize(indexFile);
log.info(
"outDir[%s] completed index.drd in %,d millis.",
outDir, System.currentTimeMillis() - startTime);
/** *********** Setup Dim Conversions ************* */
progress.progress();
startTime = System.currentTimeMillis();
IOPeon ioPeon = new TmpFileIOPeon();
ArrayList<FileOutputSupplier> dimOuts = Lists.newArrayListWithCapacity(mergedDimensions.size());
Map<String, Integer> dimensionCardinalities = Maps.newHashMap();
ArrayList<Map<String, IntBuffer>> dimConversions =
Lists.newArrayListWithCapacity(indexes.size());
for (IndexableAdapter index : indexes) {
dimConversions.add(Maps.<String, IntBuffer>newHashMap());
}
for (String dimension : mergedDimensions) {
final FlattenedArrayWriter<String> writer =
new FlattenedArrayWriter<String>(ioPeon, dimension, GenericIndexed.stringStrategy);
writer.open();
List<Indexed<String>> dimValueLookups = Lists.newArrayListWithCapacity(indexes.size());
DimValueConverter[] converters = new DimValueConverter[indexes.size()];
for (int i = 0; i < indexes.size(); i++) {
Indexed<String> dimValues = indexes.get(i).getDimValueLookup(dimension);
if (dimValues != null) {
dimValueLookups.add(dimValues);
converters[i] = new DimValueConverter(dimValues);
}
}
Iterable<String> dimensionValues =
CombiningIterable.createSplatted(
Iterables.transform(
dimValueLookups,
new Function<Indexed<String>, Iterable<String>>() {
@Override
public Iterable<String> apply(@Nullable Indexed<String> indexed) {
return Iterables.transform(
indexed,
new Function<String, String>() {
@Override
public String apply(@Nullable String input) {
return (input == null) ? "" : input;
}
});
}
}),
Ordering.<String>natural().nullsFirst());
int count = 0;
for (String value : dimensionValues) {
value = value == null ? "" : value;
writer.write(value);
for (int i = 0; i < indexes.size(); i++) {
DimValueConverter converter = converters[i];
if (converter != null) {
converter.convert(value, count);
}
}
++count;
}
dimensionCardinalities.put(dimension, count);
FileOutputSupplier dimOut =
new FileOutputSupplier(IndexIO.makeDimFile(outDir, dimension), true);
dimOuts.add(dimOut);
writer.close();
serializerUtils.writeString(dimOut, dimension);
ByteStreams.copy(writer.combineStreams(), dimOut);
for (int i = 0; i < indexes.size(); ++i) {
DimValueConverter converter = converters[i];
if (converter != null) {
dimConversions.get(i).put(dimension, converters[i].getConversionBuffer());
}
}
ioPeon.cleanup();
}
log.info(
"outDir[%s] completed dim conversions in %,d millis.",
outDir, System.currentTimeMillis() - startTime);
/** *********** Walk through data sets and merge them ************ */
progress.progress();
startTime = System.currentTimeMillis();
ArrayList<Iterable<Rowboat>> boats = Lists.newArrayListWithCapacity(indexes.size());
for (int i = 0; i < indexes.size(); ++i) {
final IndexableAdapter adapter = indexes.get(i);
final int[] dimLookup = new int[mergedDimensions.size()];
int count = 0;
for (String dim : adapter.getAvailableDimensions()) {
dimLookup[count] = mergedDimensions.indexOf(dim.toLowerCase());
count++;
}
final int[] metricLookup = new int[mergedMetrics.size()];
count = 0;
for (String metric : adapter.getAvailableMetrics()) {
metricLookup[count] = mergedMetrics.indexOf(metric);
count++;
}
boats.add(
new MMappedIndexRowIterable(
Iterables.transform(
indexes.get(i).getRows(),
new Function<Rowboat, Rowboat>() {
@Override
public Rowboat apply(@Nullable Rowboat input) {
int[][] newDims = new int[mergedDimensions.size()][];
int j = 0;
for (int[] dim : input.getDims()) {
newDims[dimLookup[j]] = dim;
j++;
}
Object[] newMetrics = new Object[mergedMetrics.size()];
j = 0;
for (Object met : input.getMetrics()) {
newMetrics[metricLookup[j]] = met;
j++;
}
return new Rowboat(
input.getTimestamp(), newDims, newMetrics, input.getRowNum());
}
}),
mergedDimensions,
dimConversions.get(i),
i));
}
Iterable<Rowboat> theRows = rowMergerFn.apply(boats);
CompressedLongsSupplierSerializer littleEndianTimeWriter =
CompressedLongsSupplierSerializer.create(
ioPeon, "little_end_time", ByteOrder.LITTLE_ENDIAN);
CompressedLongsSupplierSerializer bigEndianTimeWriter =
CompressedLongsSupplierSerializer.create(ioPeon, "big_end_time", ByteOrder.BIG_ENDIAN);
littleEndianTimeWriter.open();
bigEndianTimeWriter.open();
ArrayList<VSizeIndexedWriter> forwardDimWriters =
Lists.newArrayListWithCapacity(mergedDimensions.size());
for (String dimension : mergedDimensions) {
VSizeIndexedWriter writer =
new VSizeIndexedWriter(ioPeon, dimension, dimensionCardinalities.get(dimension));
writer.open();
forwardDimWriters.add(writer);
}
ArrayList<MetricColumnSerializer> metWriters =
Lists.newArrayListWithCapacity(mergedMetrics.size());
for (Map.Entry<String, String> entry : metricTypes.entrySet()) {
String metric = entry.getKey();
String typeName = entry.getValue();
if ("float".equals(typeName)) {
metWriters.add(new FloatMetricColumnSerializer(metric, outDir, ioPeon));
} else {
ComplexMetricSerde serde = ComplexMetrics.getSerdeForType(typeName);
if (serde == null) {
throw new ISE("Unknown type[%s]", typeName);
}
metWriters.add(new ComplexMetricColumnSerializer(metric, outDir, ioPeon, serde));
}
}
for (MetricColumnSerializer metWriter : metWriters) {
metWriter.open();
}
int rowCount = 0;
long time = System.currentTimeMillis();
List<IntBuffer> rowNumConversions = Lists.newArrayListWithCapacity(indexes.size());
for (IndexableAdapter index : indexes) {
int[] arr = new int[index.getNumRows()];
Arrays.fill(arr, INVALID_ROW);
rowNumConversions.add(IntBuffer.wrap(arr));
}
for (Rowboat theRow : theRows) {
progress.progress();
littleEndianTimeWriter.add(theRow.getTimestamp());
bigEndianTimeWriter.add(theRow.getTimestamp());
final Object[] metrics = theRow.getMetrics();
for (int i = 0; i < metrics.length; ++i) {
metWriters.get(i).serialize(metrics[i]);
}
int[][] dims = theRow.getDims();
for (int i = 0; i < dims.length; ++i) {
List<Integer> listToWrite =
(i >= dims.length || dims[i] == null) ? null : Ints.asList(dims[i]);
forwardDimWriters.get(i).write(listToWrite);
}
for (Map.Entry<Integer, TreeSet<Integer>> comprisedRow :
theRow.getComprisedRows().entrySet()) {
final IntBuffer conversionBuffer = rowNumConversions.get(comprisedRow.getKey());
for (Integer rowNum : comprisedRow.getValue()) {
while (conversionBuffer.position() < rowNum) {
conversionBuffer.put(INVALID_ROW);
}
conversionBuffer.put(rowCount);
}
}
if ((++rowCount % 500000) == 0) {
log.info(
"outDir[%s] walked 500,000/%,d rows in %,d millis.",
outDir, rowCount, System.currentTimeMillis() - time);
time = System.currentTimeMillis();
}
}
for (IntBuffer rowNumConversion : rowNumConversions) {
rowNumConversion.rewind();
}
final File littleEndianFile = IndexIO.makeTimeFile(outDir, ByteOrder.LITTLE_ENDIAN);
littleEndianFile.delete();
OutputSupplier<FileOutputStream> out = Files.newOutputStreamSupplier(littleEndianFile, true);
littleEndianTimeWriter.closeAndConsolidate(out);
IndexIO.checkFileSize(littleEndianFile);
final File bigEndianFile = IndexIO.makeTimeFile(outDir, ByteOrder.BIG_ENDIAN);
bigEndianFile.delete();
out = Files.newOutputStreamSupplier(bigEndianFile, true);
bigEndianTimeWriter.closeAndConsolidate(out);
IndexIO.checkFileSize(bigEndianFile);
for (int i = 0; i < mergedDimensions.size(); ++i) {
forwardDimWriters.get(i).close();
ByteStreams.copy(forwardDimWriters.get(i).combineStreams(), dimOuts.get(i));
}
for (MetricColumnSerializer metWriter : metWriters) {
metWriter.close();
}
ioPeon.cleanup();
log.info(
"outDir[%s] completed walk through of %,d rows in %,d millis.",
outDir, rowCount, System.currentTimeMillis() - startTime);
/** ********** Create Inverted Indexes ************ */
startTime = System.currentTimeMillis();
final File invertedFile = new File(outDir, "inverted.drd");
Files.touch(invertedFile);
out = Files.newOutputStreamSupplier(invertedFile, true);
for (int i = 0; i < mergedDimensions.size(); ++i) {
long dimStartTime = System.currentTimeMillis();
String dimension = mergedDimensions.get(i);
File dimOutFile = dimOuts.get(i).getFile();
final MappedByteBuffer dimValsMapped = Files.map(dimOutFile);
if (!dimension.equals(serializerUtils.readString(dimValsMapped))) {
throw new ISE("dimensions[%s] didn't equate!? This is a major WTF moment.", dimension);
}
Indexed<String> dimVals =
GenericIndexed.readFromByteBuffer(dimValsMapped, GenericIndexed.stringStrategy);
log.info("Starting dimension[%s] with cardinality[%,d]", dimension, dimVals.size());
FlattenedArrayWriter<ImmutableConciseSet> writer =
new FlattenedArrayWriter<ImmutableConciseSet>(
ioPeon, dimension, ConciseCompressedIndexedInts.objectStrategy);
writer.open();
for (String dimVal : IndexedIterable.create(dimVals)) {
progress.progress();
List<Iterable<Integer>> convertedInverteds = Lists.newArrayListWithCapacity(indexes.size());
for (int j = 0; j < indexes.size(); ++j) {
convertedInverteds.add(
new ConvertingIndexedInts(
indexes.get(j).getInverteds(dimension, dimVal), rowNumConversions.get(j)));
}
ConciseSet bitset = new ConciseSet();
for (Integer row :
CombiningIterable.createSplatted(
convertedInverteds, Ordering.<Integer>natural().nullsFirst())) {
if (row != INVALID_ROW) {
bitset.add(row);
}
}
writer.write(ImmutableConciseSet.newImmutableFromMutable(bitset));
}
writer.close();
serializerUtils.writeString(out, dimension);
ByteStreams.copy(writer.combineStreams(), out);
ioPeon.cleanup();
log.info(
"Completed dimension[%s] in %,d millis.",
dimension, System.currentTimeMillis() - dimStartTime);
}
log.info(
"outDir[%s] completed inverted.drd in %,d millis.",
outDir, System.currentTimeMillis() - startTime);
final ArrayList<String> expectedFiles =
Lists.newArrayList(
Iterables.concat(
Arrays.asList(
"index.drd", "inverted.drd", "time_BIG_ENDIAN.drd", "time_LITTLE_ENDIAN.drd"),
Iterables.transform(mergedDimensions, GuavaUtils.formatFunction("dim_%s.drd")),
Iterables.transform(
mergedMetrics, GuavaUtils.formatFunction("met_%s_LITTLE_ENDIAN.drd")),
Iterables.transform(
mergedMetrics, GuavaUtils.formatFunction("met_%s_BIG_ENDIAN.drd"))));
Map<String, File> files = Maps.newLinkedHashMap();
for (String fileName : expectedFiles) {
files.put(fileName, new File(outDir, fileName));
}
File smooshDir = new File(outDir, "smoosher");
smooshDir.mkdir();
for (Map.Entry<String, File> entry : Smoosh.smoosh(outDir, smooshDir, files).entrySet()) {
entry.getValue().delete();
}
for (File file : smooshDir.listFiles()) {
Files.move(file, new File(outDir, file.getName()));
}
if (!smooshDir.delete()) {
log.info(
"Unable to delete temporary dir[%s], contains[%s]",
smooshDir, Arrays.asList(smooshDir.listFiles()));
throw new IOException(String.format("Unable to delete temporary dir[%s]", smooshDir));
}
createIndexDrdFile(
IndexIO.CURRENT_VERSION_ID,
outDir,
GenericIndexed.fromIterable(mergedDimensions, GenericIndexed.stringStrategy),
GenericIndexed.fromIterable(mergedMetrics, GenericIndexed.stringStrategy),
dataInterval);
return outDir;
}
