/**
* Loads the hunspell dictionary for the given local.
*
* @param locale The locale of the hunspell dictionary to be loaded.
* @param nodeSettings The node level settings
* @param env The node environment (from which the conf path will be resolved)
* @return The loaded Hunspell dictionary
* @throws Exception when loading fails (due to IO errors or malformed dictionary files)
*/
private Dictionary loadDictionary(String locale, Settings nodeSettings, Environment env)
throws Exception {
if (logger.isDebugEnabled()) {
logger.debug("Loading hunspell dictionary [{}]...", locale);
}
Path dicDir = hunspellDir.resolve(locale);
if (FileSystemUtils.isAccessibleDirectory(dicDir, logger) == false) {
throw new ElasticsearchException(
String.format(Locale.ROOT, "Could not find hunspell dictionary [%s]", locale));
}
// merging node settings with hunspell dictionary specific settings
Settings dictSettings = HUNSPELL_DICTIONARY_OPTIONS.get(nodeSettings);
nodeSettings = loadDictionarySettings(dicDir, dictSettings.getByPrefix(locale));
boolean ignoreCase = nodeSettings.getAsBoolean("ignore_case", defaultIgnoreCase);
Path[] affixFiles = FileSystemUtils.files(dicDir, "*.aff");
if (affixFiles.length == 0) {
throw new ElasticsearchException(
String.format(Locale.ROOT, "Missing affix file for hunspell dictionary [%s]", locale));
}
if (affixFiles.length != 1) {
throw new ElasticsearchException(
String.format(
Locale.ROOT, "Too many affix files exist for hunspell dictionary [%s]", locale));
}
InputStream affixStream = null;
Path[] dicFiles = FileSystemUtils.files(dicDir, "*.dic");
List<InputStream> dicStreams = new ArrayList<>(dicFiles.length);
try {
for (int i = 0; i < dicFiles.length; i++) {
dicStreams.add(Files.newInputStream(dicFiles[i]));
}
affixStream = Files.newInputStream(affixFiles[0]);
try (Directory tmp = new SimpleFSDirectory(env.tmpFile())) {
return new Dictionary(tmp, "hunspell", affixStream, dicStreams, ignoreCase);
}
} catch (Exception e) {
logger.error("Could not load hunspell dictionary [{}]", e, locale);
throw e;
} finally {
IOUtils.close(affixStream);
IOUtils.close(dicStreams);
}
}
