/** Returns all index paths. */
public Path[] indexPaths(Index index) {
assert assertEnvIsLocked();
Path[] indexPaths = new Path[nodePaths.length];
for (int i = 0; i < nodePaths.length; i++) {
indexPaths[i] = nodePaths[i].indicesPath.resolve(index.name());
}
return indexPaths;
}
/**
* Deletes an indexes data directory recursively. Note: this method assumes that the shard lock is
* acquired
*
* @param index the index to delete
* @param indexSettings settings for the index being deleted
*/
public void deleteIndexDirectoryUnderLock(Index index, IndexSettings indexSettings)
throws IOException {
final Path[] indexPaths = indexPaths(index);
logger.trace(
"deleting index {} directory, paths({}): [{}]", index, indexPaths.length, indexPaths);
IOUtils.rm(indexPaths);
if (indexSettings.hasCustomDataPath()) {
Path customLocation = resolveCustomLocation(indexSettings, index.name());
logger.trace("deleting custom index {} directory [{}]", index, customLocation);
IOUtils.rm(customLocation);
}
}
/**
* Deletes an indexes data directory recursively. Note: this method assumes that the shard lock is
* acquired
*
* @param index the index to delete
* @param indexSettings settings for the index being deleted
*/
public void deleteIndexDirectoryUnderLock(Index index, @IndexSettings Settings indexSettings)
throws IOException {
// This is to ensure someone doesn't use Settings.EMPTY
assert indexSettings != Settings.EMPTY;
final Path[] indexPaths = indexPaths(index);
logger.trace(
"deleting index {} directory, paths({}): [{}]", index, indexPaths.length, indexPaths);
IOUtils.rm(indexPaths);
if (hasCustomDataPath(indexSettings)) {
Path customLocation = resolveCustomLocation(indexSettings, index.name());
logger.trace("deleting custom index {} directory [{}]", index, customLocation);
IOUtils.rm(customLocation);
}
}
protected BlobStoreIndexGateway(
Index index, @IndexSettings Settings indexSettings, Gateway gateway) {
super(index, indexSettings);
if (gateway.type().equals(NoneGateway.TYPE)) {
logger.warn(
"index gateway is configured, but no cluster level gateway configured, cluster level metadata will be lost on full shutdown");
}
this.gateway = (BlobStoreGateway) gateway;
this.blobStore = this.gateway.blobStore();
this.chunkSize = componentSettings.getAsBytesSize("chunk_size", this.gateway.chunkSize());
this.indexPath = this.gateway.basePath().add("indices").add(index.name());
}
/**
* Tries to find all allocated shards for the given index on the current node. NOTE: This methods
* is prone to race-conditions on the filesystem layer since it might not see directories created
* concurrently or while it's traversing.
*
* @param index the index to filter shards
* @return a set of shard IDs
* @throws IOException if an IOException occurs
*/
public Set<ShardId> findAllShardIds(final Index index) throws IOException {
assert index != null;
if (nodePaths == null || locks == null) {
throw new IllegalStateException("node is not configured to store local location");
}
assert assertEnvIsLocked();
final Set<ShardId> shardIds = Sets.newHashSet();
String indexName = index.name();
for (final NodePath nodePath : nodePaths) {
Path location = nodePath.indicesPath;
if (Files.isDirectory(location)) {
try (DirectoryStream<Path> indexStream = Files.newDirectoryStream(location)) {
for (Path indexPath : indexStream) {
if (indexName.equals(indexPath.getFileName().toString())) {
shardIds.addAll(findAllShardsForIndex(indexPath));
}
}
}
}
}
return shardIds;
}
/** Resolves the given indexes directory against this NodePath */
public Path resolve(Index index) {
return indicesPath.resolve(index.name());
}