Example usage for com.mongodb.client.gridfs.model GridFSUploadOptions GridFSUploadOptions

Introduction

In this page you can find the example usage for com.mongodb.client.gridfs.model GridFSUploadOptions GridFSUploadOptions.

Prototype

public GridFSUploadOptions() 

Source Link

Document

Construct a new instance.

Usage

From source file:org.apache.nifi.processors.mongodb.gridfs.PutGridFS.java

License:Apache License

@Override
public void onTrigger(ProcessContext context, ProcessSession session) throws ProcessException {
    FlowFile input = session.get();// www. j  a v a2 s .c  o  m
    if (input == null) {
        return;
    }

    GridFSBucket bucket = getBucket(input, context);

    if (!canUploadFile(context, input, bucket.getBucketName())) {
        getLogger().error("Cannot upload the file because of the uniqueness policy configured.");
        session.transfer(input, REL_DUPLICATE);
        return;
    }

    final int chunkSize = context.getProperty(CHUNK_SIZE).evaluateAttributeExpressions(input)
            .asDataSize(DataUnit.B).intValue();

    try (InputStream fileInput = session.read(input)) {
        String fileName = context.getProperty(FILE_NAME).evaluateAttributeExpressions(input).getValue();
        GridFSUploadOptions options = new GridFSUploadOptions().chunkSizeBytes(chunkSize)
                .metadata(getMetadata(input, context));
        ObjectId id = bucket.uploadFromStream(fileName, fileInput, options);
        fileInput.close();

        if (id != null) {
            input = session.putAttribute(input, ID_ATTRIBUTE, id.toString());
            session.transfer(input, REL_SUCCESS);
            session.getProvenanceReporter().send(input, getTransitUri(id, input, context));
        } else {
            getLogger().error("ID was null, assuming failure.");
            session.transfer(input, REL_FAILURE);
        }
    } catch (Exception ex) {
        getLogger().error("Failed to upload file", ex);
        session.transfer(input, REL_FAILURE);
    }
}

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From source file:org.restheart.db.GridFsDAO.java

License:Open Source License

@Override
@SuppressWarnings("unchecked")
public OperationResult createFile(final Database db, final String dbName, final String bucketName,
        final BsonDocument metadata, final Path filePath) throws IOException, DuplicateKeyException {

    final String bucket = extractBucketName(bucketName);

    GridFSBucket gridFSBucket = GridFSBuckets.create(db.getDatabase(dbName), bucket);

    String filename = extractFilenameFromProperties(metadata);

    //add etag to metadata
    ObjectId etag = new ObjectId();
    metadata.put("_etag", new BsonObjectId(etag));

    GridFSUploadOptions options = new GridFSUploadOptions().metadata(Document.parse(metadata.toJson()));

    InputStream sourceStream = new FileInputStream(filePath.toFile());

    ObjectId _id = gridFSBucket.uploadFromStream(filename, sourceStream, options);

    return new OperationResult(HttpStatus.SC_CREATED, new BsonObjectId(etag), new BsonObjectId(_id));
}

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