Examples with RecordSet org.apache.nifi.serialization.record.RecordSet used on opensource projects

Example 11 with RecordSet

use of org.apache.nifi.serialization.record.RecordSet in project nifi by apache.

the class PublishKafkaRecord_0_11 method onTrigger.

@Override
public void onTrigger(final ProcessContext context, final ProcessSession session) throws ProcessException {
    final List<FlowFile> flowFiles = session.get(FlowFileFilters.newSizeBasedFilter(1, DataUnit.MB, 500));
    if (flowFiles.isEmpty()) {
        return;
    }
    final PublisherPool pool = getPublisherPool(context);
    if (pool == null) {
        context.yield();
        return;
    }
    final String securityProtocol = context.getProperty(KafkaProcessorUtils.SECURITY_PROTOCOL).getValue();
    final String bootstrapServers = context.getProperty(KafkaProcessorUtils.BOOTSTRAP_SERVERS).evaluateAttributeExpressions().getValue();
    final RecordSetWriterFactory writerFactory = context.getProperty(RECORD_WRITER).asControllerService(RecordSetWriterFactory.class);
    final RecordReaderFactory readerFactory = context.getProperty(RECORD_READER).asControllerService(RecordReaderFactory.class);
    final boolean useTransactions = context.getProperty(USE_TRANSACTIONS).asBoolean();
    final long startTime = System.nanoTime();
    try (final PublisherLease lease = pool.obtainPublisher()) {
        if (useTransactions) {
            lease.beginTransaction();
        }
        // Send each FlowFile to Kafka asynchronously.
        final Iterator<FlowFile> itr = flowFiles.iterator();
        while (itr.hasNext()) {
            final FlowFile flowFile = itr.next();
            if (!isScheduled()) {
                // If stopped, re-queue FlowFile instead of sending it
                if (useTransactions) {
                    session.rollback();
                    lease.rollback();
                    return;
                }
                session.transfer(flowFile);
                itr.remove();
                continue;
            }
            final String topic = context.getProperty(TOPIC).evaluateAttributeExpressions(flowFile).getValue();
            final String messageKeyField = context.getProperty(MESSAGE_KEY_FIELD).evaluateAttributeExpressions(flowFile).getValue();
            try {
                session.read(flowFile, new InputStreamCallback() {

                    @Override
                    public void process(final InputStream rawIn) throws IOException {
                        try (final InputStream in = new BufferedInputStream(rawIn)) {
                            final RecordReader reader = readerFactory.createRecordReader(flowFile, in, getLogger());
                            final RecordSet recordSet = reader.createRecordSet();
                            final RecordSchema schema = writerFactory.getSchema(flowFile.getAttributes(), recordSet.getSchema());
                            lease.publish(flowFile, recordSet, writerFactory, schema, messageKeyField, topic);
                        } catch (final SchemaNotFoundException | MalformedRecordException e) {
                            throw new ProcessException(e);
                        }
                    }
                });
            } catch (final Exception e) {
                // The FlowFile will be obtained and the error logged below, when calling publishResult.getFailedFlowFiles()
                lease.fail(flowFile, e);
                continue;
            }
        }
        // Complete the send
        final PublishResult publishResult = lease.complete();
        if (publishResult.isFailure()) {
            getLogger().info("Failed to send FlowFile to kafka; transferring to failure");
            session.transfer(flowFiles, REL_FAILURE);
            return;
        }
        // Transfer any successful FlowFiles.
        final long transmissionMillis = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startTime);
        for (FlowFile success : flowFiles) {
            final String topic = context.getProperty(TOPIC).evaluateAttributeExpressions(success).getValue();
            final int msgCount = publishResult.getSuccessfulMessageCount(success);
            success = session.putAttribute(success, MSG_COUNT, String.valueOf(msgCount));
            session.adjustCounter("Messages Sent", msgCount, true);
            final String transitUri = KafkaProcessorUtils.buildTransitURI(securityProtocol, bootstrapServers, topic);
            session.getProvenanceReporter().send(success, transitUri, "Sent " + msgCount + " messages", transmissionMillis);
            session.transfer(success, REL_SUCCESS);
        }
    }
}

Example 12 with RecordSet

use of org.apache.nifi.serialization.record.RecordSet in project nifi by apache.

the class TestWriteJsonResult method testTimestampWithNullFormat.

@Test
public void testTimestampWithNullFormat() throws IOException {
    final Map<String, Object> values = new HashMap<>();
    values.put("timestamp", new java.sql.Timestamp(37293723L));
    values.put("time", new java.sql.Time(37293723L));
    values.put("date", new java.sql.Date(37293723L));
    final List<RecordField> fields = new ArrayList<>();
    fields.add(new RecordField("timestamp", RecordFieldType.TIMESTAMP.getDataType()));
    fields.add(new RecordField("time", RecordFieldType.TIME.getDataType()));
    fields.add(new RecordField("date", RecordFieldType.DATE.getDataType()));
    final RecordSchema schema = new SimpleRecordSchema(fields);
    final Record record = new MapRecord(schema, values);
    final RecordSet rs = RecordSet.of(schema, record);
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try (final WriteJsonResult writer = new WriteJsonResult(Mockito.mock(ComponentLog.class), schema, new SchemaNameAsAttribute(), baos, false, NullSuppression.NEVER_SUPPRESS, null, null, null)) {
        writer.write(rs);
    }
    final byte[] data = baos.toByteArray();
    final String expected = "[{\"timestamp\":37293723,\"time\":37293723,\"date\":37293723}]";
    final String output = new String(data, StandardCharsets.UTF_8);
    assertEquals(expected, output);
}

Example 13 with RecordSet

use of org.apache.nifi.serialization.record.RecordSet in project nifi by apache.

the class TestWriteJsonResult method testWriteSerializedForm.

@Test
public void testWriteSerializedForm() throws IOException {
    final List<RecordField> fields = new ArrayList<>();
    fields.add(new RecordField("name", RecordFieldType.STRING.getDataType()));
    fields.add(new RecordField("age", RecordFieldType.INT.getDataType()));
    final RecordSchema schema = new SimpleRecordSchema(fields);
    final Map<String, Object> values1 = new HashMap<>();
    values1.put("name", "John Doe");
    values1.put("age", 42);
    final String serialized1 = "{ \"name\": \"John Doe\",    \"age\": 42 }";
    final SerializedForm serializedForm1 = SerializedForm.of(serialized1, "application/json");
    final Record record1 = new MapRecord(schema, values1, serializedForm1);
    final Map<String, Object> values2 = new HashMap<>();
    values2.put("name", "Jane Doe");
    values2.put("age", 43);
    final String serialized2 = "{ \"name\": \"Jane Doe\",    \"age\": 43 }";
    final SerializedForm serializedForm2 = SerializedForm.of(serialized2, "application/json");
    final Record record2 = new MapRecord(schema, values1, serializedForm2);
    final RecordSet rs = RecordSet.of(schema, record1, record2);
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    try (final WriteJsonResult writer = new WriteJsonResult(Mockito.mock(ComponentLog.class), schema, new SchemaNameAsAttribute(), baos, true, NullSuppression.NEVER_SUPPRESS, RecordFieldType.DATE.getDefaultFormat(), RecordFieldType.TIME.getDefaultFormat(), RecordFieldType.TIMESTAMP.getDefaultFormat())) {
        writer.write(rs);
    }
    final byte[] data = baos.toByteArray();
    final String expected = "[ " + serialized1 + ", " + serialized2 + " ]";
    final String output = new String(data, StandardCharsets.UTF_8);
    assertEquals(expected, output);
}

Example 14 with RecordSet

use of org.apache.nifi.serialization.record.RecordSet in project nifi by apache.

the class TestWriteJsonResult method testDataTypes.

@Test
public void testDataTypes() throws IOException, ParseException {
    final List<RecordField> fields = new ArrayList<>();
    for (final RecordFieldType fieldType : RecordFieldType.values()) {
        if (fieldType == RecordFieldType.CHOICE) {
            final List<DataType> possibleTypes = new ArrayList<>();
            possibleTypes.add(RecordFieldType.INT.getDataType());
            possibleTypes.add(RecordFieldType.LONG.getDataType());
            fields.add(new RecordField(fieldType.name().toLowerCase(), fieldType.getChoiceDataType(possibleTypes)));
        } else if (fieldType == RecordFieldType.MAP) {
            fields.add(new RecordField(fieldType.name().toLowerCase(), fieldType.getMapDataType(RecordFieldType.INT.getDataType())));
        } else {
            fields.add(new RecordField(fieldType.name().toLowerCase(), fieldType.getDataType()));
        }
    }
    final RecordSchema schema = new SimpleRecordSchema(fields);
    final ByteArrayOutputStream baos = new ByteArrayOutputStream();
    final DateFormat df = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss.SSS");
    df.setTimeZone(TimeZone.getTimeZone("gmt"));
    final long time = df.parse("2017/01/01 17:00:00.000").getTime();
    final Map<String, Object> map = new LinkedHashMap<>();
    map.put("height", 48);
    map.put("width", 96);
    final Map<String, Object> valueMap = new LinkedHashMap<>();
    valueMap.put("string", "string");
    valueMap.put("boolean", true);
    valueMap.put("byte", (byte) 1);
    valueMap.put("char", 'c');
    valueMap.put("short", (short) 8);
    valueMap.put("int", 9);
    valueMap.put("bigint", BigInteger.valueOf(8L));
    valueMap.put("long", 8L);
    valueMap.put("float", 8.0F);
    valueMap.put("double", 8.0D);
    valueMap.put("date", new Date(time));
    valueMap.put("time", new Time(time));
    valueMap.put("timestamp", new Timestamp(time));
    valueMap.put("record", null);
    valueMap.put("array", null);
    valueMap.put("choice", 48L);
    valueMap.put("map", map);
    final Record record = new MapRecord(schema, valueMap);
    final RecordSet rs = RecordSet.of(schema, record);
    try (final WriteJsonResult writer = new WriteJsonResult(Mockito.mock(ComponentLog.class), schema, new SchemaNameAsAttribute(), baos, true, NullSuppression.NEVER_SUPPRESS, RecordFieldType.DATE.getDefaultFormat(), RecordFieldType.TIME.getDefaultFormat(), RecordFieldType.TIMESTAMP.getDefaultFormat())) {
        writer.write(rs);
    }
    final String output = baos.toString();
    final String expected = new String(Files.readAllBytes(Paths.get("src/test/resources/json/output/dataTypes.json")));
    assertEquals(expected, output);
}