Java Code Examples for org.apache.lucene.store.OutputStreamIndexOutput

The following examples show how to use org.apache.lucene.store.OutputStreamIndexOutput. These examples are extracted from open source projects. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source Project: Elasticsearch   Source File: ChecksumBlobStoreFormat.java    License: Apache License 2.0 6 votes vote down vote up
/**
 * Writes blob in atomic manner without resolving the blobName using using {@link #blobName} method.
 * <p>
 * The blob will be compressed and checksum will be written if required.
 *
 * @param obj           object to be serialized
 * @param blobContainer blob container
 * @param blobName          blob name
 */
protected void writeBlob(T obj, BlobContainer blobContainer, String blobName) throws IOException {
    BytesReference bytes = write(obj);
    try (ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream()) {
        final String resourceDesc = "ChecksumBlobStoreFormat.writeBlob(blob=\"" + blobName + "\")";
        try (OutputStreamIndexOutput indexOutput = new OutputStreamIndexOutput(resourceDesc, byteArrayOutputStream, BUFFER_SIZE)) {
            CodecUtil.writeHeader(indexOutput, codec, VERSION);
            try (OutputStream indexOutputOutputStream = new IndexOutputOutputStream(indexOutput) {
                @Override
                public void close() throws IOException {
                    // this is important since some of the XContentBuilders write bytes on close.
                    // in order to write the footer we need to prevent closing the actual index input.
                } }) {
                bytes.writeTo(indexOutputOutputStream);
            }
            CodecUtil.writeFooter(indexOutput);
        }
        blobContainer.writeBlob(blobName, new BytesArray(byteArrayOutputStream.toByteArray()));
    }
}
 
Example 2
Source Project: crate   Source File: ChecksumBlobStoreFormat.java    License: Apache License 2.0 5 votes vote down vote up
private void writeTo(final T obj, final String blobName, final CheckedConsumer<BytesArray, IOException> consumer) throws IOException {
    final BytesReference bytes;
    try (BytesStreamOutput bytesStreamOutput = new BytesStreamOutput()) {
        if (compress) {
            try (StreamOutput compressedStreamOutput = CompressorFactory.COMPRESSOR.streamOutput(bytesStreamOutput)) {
                write(obj, compressedStreamOutput);
            }
        } else {
            write(obj, bytesStreamOutput);
        }
        bytes = bytesStreamOutput.bytes();
    }
    try (ByteArrayOutputStream outputStream = new ByteArrayOutputStream()) {
        final String resourceDesc = "ChecksumBlobStoreFormat.writeBlob(blob=\"" + blobName + "\")";
        try (OutputStreamIndexOutput indexOutput = new OutputStreamIndexOutput(resourceDesc, blobName, outputStream, BUFFER_SIZE)) {
            CodecUtil.writeHeader(indexOutput, codec, VERSION);
            try (OutputStream indexOutputOutputStream = new IndexOutputOutputStream(indexOutput) {
                @Override
                public void close() {
                    // this is important since some of the XContentBuilders write bytes on close.
                    // in order to write the footer we need to prevent closing the actual index input.
                }
            }) {
                bytes.writeTo(indexOutputOutputStream);
            }
            CodecUtil.writeFooter(indexOutput);
        }
        consumer.accept(new BytesArray(outputStream.toByteArray()));
    }
}