Examples with BinaryDocument com.couchbase.client.java.document.BinaryDocument used on opensource projects

Example 1 with BinaryDocument

use of com.couchbase.client.java.document.BinaryDocument in project nifi by apache.

the class GetCouchbaseKey method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
    FlowFile inFile = session.get();
    if (inFile == null) {
        return;
    }
    final long startNanos = System.nanoTime();
    final ComponentLog logger = getLogger();
    String docId = null;
    if (!StringUtils.isEmpty(context.getProperty(DOC_ID).getValue())) {
        docId = context.getProperty(DOC_ID).evaluateAttributeExpressions(inFile).getValue();
    } else {
        final byte[] content = new byte[(int) inFile.getSize()];
        session.read(inFile, new InputStreamCallback() {

            @Override
            public void process(final InputStream in) throws IOException {
                StreamUtils.fillBuffer(in, content, true);
            }
        });
        docId = new String(content, StandardCharsets.UTF_8);
    }
    if (StringUtils.isEmpty(docId)) {
        throw new ProcessException("Please check 'Document Id' setting. Couldn't get document id from " + inFile);
    }
    try {
        final Document<?> doc;
        final byte[] content;
        final Bucket bucket = openBucket(context);
        final DocumentType documentType = DocumentType.valueOf(context.getProperty(DOCUMENT_TYPE).getValue());
        switch(documentType) {
            case Json:
                {
                    RawJsonDocument document = bucket.get(docId, RawJsonDocument.class);
                    if (document == null) {
                        doc = null;
                        content = null;
                    } else {
                        content = document.content().getBytes(StandardCharsets.UTF_8);
                        doc = document;
                    }
                    break;
                }
            case Binary:
                {
                    BinaryDocument document = bucket.get(docId, BinaryDocument.class);
                    if (document == null) {
                        doc = null;
                        content = null;
                    } else {
                        content = document.content().array();
                        doc = document;
                    }
                    break;
                }
            default:
                {
                    doc = null;
                    content = null;
                }
        }
        if (doc == null) {
            logger.error("Document {} was not found in {}; routing {} to failure", new Object[] { docId, getTransitUrl(context, docId), inFile });
            inFile = session.putAttribute(inFile, CouchbaseAttributes.Exception.key(), DocumentDoesNotExistException.class.getName());
            session.transfer(inFile, REL_FAILURE);
            return;
        }
        FlowFile outFile = session.create(inFile);
        outFile = session.write(outFile, new OutputStreamCallback() {

            @Override
            public void process(final OutputStream out) throws IOException {
                out.write(content);
            }
        });
        final Map<String, String> updatedAttrs = new HashMap<>();
        updatedAttrs.put(CouchbaseAttributes.Cluster.key(), context.getProperty(COUCHBASE_CLUSTER_SERVICE).getValue());
        updatedAttrs.put(CouchbaseAttributes.Bucket.key(), context.getProperty(BUCKET_NAME).getValue());
        updatedAttrs.put(CouchbaseAttributes.DocId.key(), docId);
        updatedAttrs.put(CouchbaseAttributes.Cas.key(), String.valueOf(doc.cas()));
        updatedAttrs.put(CouchbaseAttributes.Expiry.key(), String.valueOf(doc.expiry()));
        outFile = session.putAllAttributes(outFile, updatedAttrs);
        final long fetchMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNanos);
        session.getProvenanceReporter().fetch(outFile, getTransitUrl(context, docId), fetchMillis);
        session.transfer(outFile, REL_SUCCESS);
        session.transfer(inFile, REL_ORIGINAL);
    } catch (final CouchbaseException e) {
        String errMsg = String.format("Getting document %s from Couchbase Server using %s failed due to %s", docId, inFile, e);
        handleCouchbaseException(context, session, logger, inFile, e, errMsg);
    }
}