MongoStorage.java 文件源码

@Override
public void fsync() {
    super.fsync();

    val count = new MutableInt();

    Stream.of( data.values()
        .stream()
        .filter( m -> m.modified >= lastFsync ) )
        .grouped( bulkSize )
        .forEach( list -> {
            count.add( list.size() );

            final List<? extends WriteModel<Metadata<T>>> bulk = Lists.map( list,
                metadata -> {
                    val id = identifier.get( metadata.object );
                    return new ReplaceOneModel<>( eq( "_id", new ObjectId( id ) ), metadata, UPDATE_OPTIONS_UPSERT );
                } );
            collection.bulkWrite( bulk );

        } );

    log.info( "[{}] fsync total: {}, modified: {}", collection.getNamespace(), size(), count.intValue() );
    lastFsync = System.currentTimeMillis();
}