Java Code Examples for org.apache.avro.reflect.ReflectDatumReader#read()

The following examples show how to use org.apache.avro.reflect.ReflectDatumReader#read() . 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 File: AvroTestUtil.java From hadoop with Apache License 2.0

6 votes

public static void testReflect(Object value, Type type, String schema)
  throws Exception {

  // check that schema matches expected
  Schema s = ReflectData.get().getSchema(type);
  assertEquals(Schema.parse(schema), s);

  // check that value is serialized correctly
  ReflectDatumWriter<Object> writer = new ReflectDatumWriter<Object>(s);
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  writer.write(value, EncoderFactory.get().directBinaryEncoder(out, null));
  ReflectDatumReader<Object> reader = new ReflectDatumReader<Object>(s);
  Object after =
    reader.read(null,
                DecoderFactory.get().binaryDecoder(out.toByteArray(), null));
  assertEquals(value, after);
}

Example 2

Source File: AvroTestUtil.java From big-c with Apache License 2.0

6 votes

public static void testReflect(Object value, Type type, String schema)
  throws Exception {

  // check that schema matches expected
  Schema s = ReflectData.get().getSchema(type);
  assertEquals(Schema.parse(schema), s);

  // check that value is serialized correctly
  ReflectDatumWriter<Object> writer = new ReflectDatumWriter<Object>(s);
  ByteArrayOutputStream out = new ByteArrayOutputStream();
  writer.write(value, EncoderFactory.get().directBinaryEncoder(out, null));
  ReflectDatumReader<Object> reader = new ReflectDatumReader<Object>(s);
  Object after =
    reader.read(null,
                DecoderFactory.get().binaryDecoder(out.toByteArray(), null));
  assertEquals(value, after);
}

Example 3

Source File: TestLog4jAppenderWithAvro.java From mt-flume with Apache License 2.0

5 votes

@Test
public void testAvroReflect() throws IOException {
  loadProperties("flume-log4jtest-avro-reflect.properties");
  PropertyConfigurator.configure(props);
  Logger logger = LogManager.getLogger(TestLog4jAppenderWithAvro.class);
  String msg = "This is log message number " + String.valueOf(0);

  AppEvent appEvent = new AppEvent();
  appEvent.setMessage(msg);

  logger.info(appEvent);

  Transaction transaction = ch.getTransaction();
  transaction.begin();
  Event event = ch.take();
  Assert.assertNotNull(event);

  Schema schema = ReflectData.get().getSchema(appEvent.getClass());

  ReflectDatumReader<AppEvent> reader = new ReflectDatumReader<AppEvent>(AppEvent.class);
  BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(event.getBody(), null);
  AppEvent recordFromEvent = reader.read(null, decoder);
  Assert.assertEquals(msg, recordFromEvent.getMessage());

  Map<String, String> hdrs = event.getHeaders();

  Assert.assertNull(hdrs.get(Log4jAvroHeaders.MESSAGE_ENCODING.toString()));

  Assert.assertNull("Schema URL should not be set",
      hdrs.get(Log4jAvroHeaders.AVRO_SCHEMA_URL.toString()));
  Assert.assertEquals("Schema string should be set", schema.toString(),
      hdrs.get(Log4jAvroHeaders.AVRO_SCHEMA_LITERAL.toString()));

  transaction.commit();
  transaction.close();

}

Example 4

Source File: TestLog4jAppenderWithAvro.java From kite with Apache License 2.0

5 votes

@Test
public void testAvroReflect() throws IOException {
  loadProperties("flume-log4jtest-avro-reflect.properties");
  PropertyConfigurator.configure(props);
  Logger logger = LogManager.getLogger(TestLog4jAppenderWithAvro.class);
  String msg = "This is log message number " + String.valueOf(0);

  AppEvent appEvent = new AppEvent();
  appEvent.setMessage(msg);

  logger.info(appEvent);

  Transaction transaction = ch.getTransaction();
  transaction.begin();
  Event event = ch.take();
  Assert.assertNotNull(event);

  Schema schema = ReflectData.get().getSchema(appEvent.getClass());

  ReflectDatumReader<AppEvent> reader = new ReflectDatumReader<AppEvent>(AppEvent.class);
  BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(event.getBody(), null);
  AppEvent recordFromEvent = reader.read(null, decoder);
  Assert.assertEquals(msg, recordFromEvent.getMessage());

  Map<String, String> hdrs = event.getHeaders();

  Assert.assertNull(hdrs.get(Log4jAvroHeaders.MESSAGE_ENCODING.toString()));

  Assert.assertNull("Schema URL should not be set",
      hdrs.get(Log4jAvroHeaders.AVRO_SCHEMA_URL.toString()));
  Assert.assertEquals("Schema string should be set", schema.toString(),
      hdrs.get(Log4jAvroHeaders.AVRO_SCHEMA_LITERAL.toString()));

  transaction.commit();
  transaction.close();

}