/**
* Creates shard snapshot
*
* @param snapshotId snapshot id
* @param snapshotStatus snapshot status
*/
public void snapshot(final SnapshotId snapshotId, final IndexShardSnapshotStatus snapshotStatus) {
IndexShardRepository indexShardRepository =
repositoriesService.indexShardRepository(snapshotId.getRepository());
if (!indexShard.routingEntry().primary()) {
throw new IndexShardSnapshotFailedException(
shardId, "snapshot should be performed only on primary");
}
if (indexShard.routingEntry().relocating()) {
// do not snapshot when in the process of relocation of primaries so we won't get conflicts
throw new IndexShardSnapshotFailedException(shardId, "cannot snapshot while relocating");
}
if (indexShard.state() == IndexShardState.CREATED
|| indexShard.state() == IndexShardState.RECOVERING) {
// shard has just been created, or still recovering
throw new IndexShardSnapshotFailedException(shardId, "shard didn't fully recover yet");
}
try {
SnapshotIndexCommit snapshotIndexCommit = indexShard.snapshotIndex();
try {
indexShardRepository.snapshot(snapshotId, shardId, snapshotIndexCommit, snapshotStatus);
if (logger.isDebugEnabled()) {
StringBuilder sb = new StringBuilder();
sb.append("snapshot (")
.append(snapshotId.getSnapshot())
.append(") completed to ")
.append(indexShardRepository)
.append(", took [")
.append(TimeValue.timeValueMillis(snapshotStatus.time()))
.append("]\n");
sb.append(" index : version [")
.append(snapshotStatus.indexVersion())
.append("], number_of_files [")
.append(snapshotStatus.numberOfFiles())
.append("] with total_size [")
.append(new ByteSizeValue(snapshotStatus.totalSize()))
.append("]\n");
logger.debug(sb.toString());
}
} finally {
snapshotIndexCommit.close();
}
} catch (SnapshotFailedEngineException e) {
throw e;
} catch (IndexShardSnapshotFailedException e) {
throw e;
} catch (Throwable e) {
throw new IndexShardSnapshotFailedException(shardId, "Failed to snapshot", e);
}
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
int n = in.readVInt();
snapshotIds = new SnapshotId[n];
for (int i = 0; i < n; i++) {
snapshotIds[i] = SnapshotId.readSnapshotId(in);
}
}
@Override
public void readFrom(StreamInput in) throws IOException {
super.readFrom(in);
int numberOfSnapshots = in.readVInt();
Map<SnapshotId, Map<ShardId, SnapshotIndexShardStatus>> snapshotMapBuilder =
new HashMap<>(numberOfSnapshots);
for (int i = 0; i < numberOfSnapshots; i++) {
SnapshotId snapshotId = SnapshotId.readSnapshotId(in);
int numberOfShards = in.readVInt();
Map<ShardId, SnapshotIndexShardStatus> shardMapBuilder = new HashMap<>(numberOfShards);
for (int j = 0; j < numberOfShards; j++) {
ShardId shardId = ShardId.readShardId(in);
SnapshotIndexShardStatus status = SnapshotIndexShardStatus.readShardSnapshotStatus(in);
shardMapBuilder.put(shardId, status);
}
snapshotMapBuilder.put(snapshotId, unmodifiableMap(shardMapBuilder));
}
status = unmodifiableMap(snapshotMapBuilder);
}