/**
* Given arguments specifying an SSTable, and optionally an output file, export the contents of
* the SSTable to JSON.
*
* @param args command lines arguments
* @throws ConfigurationException on configuration failure (wrong params given)
*/
public static void main(String[] args) throws ConfigurationException {
CommandLineParser parser = new PosixParser();
try {
cmd = parser.parse(options, args);
} catch (ParseException e1) {
System.err.println(e1.getMessage());
printUsage();
System.exit(1);
}
if (cmd.getArgs().length != 1) {
System.err.println("You must supply exactly one sstable");
printUsage();
System.exit(1);
}
String[] keys = cmd.getOptionValues(KEY_OPTION);
HashSet<String> excludes =
new HashSet<>(
Arrays.asList(
cmd.getOptionValues(EXCLUDE_KEY_OPTION) == null
? new String[0]
: cmd.getOptionValues(EXCLUDE_KEY_OPTION)));
String ssTableFileName = new File(cmd.getArgs()[0]).getAbsolutePath();
if (Descriptor.isLegacyFile(new File(ssTableFileName))) {
System.err.println("Unsupported legacy sstable");
System.exit(1);
}
if (!new File(ssTableFileName).exists()) {
System.err.println("Cannot find file " + ssTableFileName);
System.exit(1);
}
Descriptor desc = Descriptor.fromFilename(ssTableFileName);
try {
CFMetaData metadata = metadataFromSSTable(desc);
if (cmd.hasOption(ENUMERATE_KEYS_OPTION)) {
JsonTransformer.keysToJson(
null,
iterToStream(new KeyIterator(desc, metadata)),
cmd.hasOption(RAW_TIMESTAMPS),
metadata,
System.out);
} else {
SSTableReader sstable = SSTableReader.openNoValidation(desc, metadata);
IPartitioner partitioner = sstable.getPartitioner();
final ISSTableScanner currentScanner;
if ((keys != null) && (keys.length > 0)) {
List<AbstractBounds<PartitionPosition>> bounds =
Arrays.stream(keys)
.filter(key -> !excludes.contains(key))
.map(metadata.getKeyValidator()::fromString)
.map(partitioner::decorateKey)
.sorted()
.map(DecoratedKey::getToken)
.map(token -> new Bounds<>(token.minKeyBound(), token.maxKeyBound()))
.collect(Collectors.toList());
currentScanner = sstable.getScanner(bounds.iterator());
} else {
currentScanner = sstable.getScanner();
}
Stream<UnfilteredRowIterator> partitions =
iterToStream(currentScanner)
.filter(
i ->
excludes.isEmpty()
|| !excludes.contains(
metadata.getKeyValidator().getString(i.partitionKey().getKey())));
if (cmd.hasOption(DEBUG_OUTPUT_OPTION)) {
AtomicLong position = new AtomicLong();
partitions.forEach(
partition -> {
position.set(currentScanner.getCurrentPosition());
if (!partition.partitionLevelDeletion().isLive()) {
System.out.println(
"["
+ metadata.getKeyValidator().getString(partition.partitionKey().getKey())
+ "]@"
+ position.get()
+ " "
+ partition.partitionLevelDeletion());
}
if (!partition.staticRow().isEmpty()) {
System.out.println(
"["
+ metadata.getKeyValidator().getString(partition.partitionKey().getKey())
+ "]@"
+ position.get()
+ " "
+ partition.staticRow().toString(metadata, true));
}
partition.forEachRemaining(
row -> {
System.out.println(
"["
+ metadata
.getKeyValidator()
.getString(partition.partitionKey().getKey())
+ "]@"
+ position.get()
+ " "
+ row.toString(metadata, false, true));
position.set(currentScanner.getCurrentPosition());
});
});
} else {
JsonTransformer.toJson(
currentScanner, partitions, cmd.hasOption(RAW_TIMESTAMPS), metadata, System.out);
}
}
} catch (IOException e) {
// throwing exception outside main with broken pipe causes windows cmd to hang
e.printStackTrace(System.err);
}
System.exit(0);
}
