Examples with IdentityStreamEventDecoder co.cask.cdap.data.stream.decoder.IdentityStreamEventDecoder used on opensource projects

Example 1 with IdentityStreamEventDecoder

use of co.cask.cdap.data.stream.decoder.IdentityStreamEventDecoder in project cdap by caskdata.

the class StreamInputFormatTest method testStreamRecordReader.

@Test
public void testStreamRecordReader() throws Exception {
    File inputDir = tmpFolder.newFolder();
    File partition = new File(inputDir, "1.1000");
    partition.mkdirs();
    File eventFile = new File(partition, "bucket.1.0." + StreamFileType.EVENT.getSuffix());
    File indexFile = new File(partition, "bucket.1.0." + StreamFileType.INDEX.getSuffix());
    // write 1 event
    StreamDataFileWriter writer = new StreamDataFileWriter(Files.newOutputStreamSupplier(eventFile), Files.newOutputStreamSupplier(indexFile), 100L);
    writer.append(StreamFileTestUtils.createEvent(1000, "test"));
    writer.flush();
    // get splits from the input format. Expect to get 2 splits,
    // one from 0 - some offset and one from offset - Long.MAX_VALUE.
    Configuration conf = new Configuration();
    TaskAttemptContext context = new TaskAttemptContextImpl(conf, new TaskAttemptID());
    AbstractStreamInputFormat.setStreamId(conf, DUMMY_ID);
    AbstractStreamInputFormat.setStreamPath(conf, inputDir.toURI());
    AbstractStreamInputFormat format = new AbstractStreamInputFormat() {

        @Override
        public AuthorizationEnforcer getAuthorizationEnforcer(TaskAttemptContext context) {
            return new NoOpAuthorizer();
        }

        @Override
        public AuthenticationContext getAuthenticationContext(TaskAttemptContext context) {
            return new AuthenticationTestContext();
        }
    };
    List<InputSplit> splits = format.getSplits(new JobContextImpl(new JobConf(conf), new JobID()));
    Assert.assertEquals(2, splits.size());
    // write another event so that the 2nd split has something to read
    writer.append(StreamFileTestUtils.createEvent(1001, "test"));
    writer.close();
    // create a record reader for the 2nd split
    StreamRecordReader<LongWritable, StreamEvent> recordReader = new StreamRecordReader<>(new IdentityStreamEventDecoder(), new NoOpAuthorizer(), new AuthenticationTestContext(), DUMMY_ID);
    recordReader.initialize(splits.get(1), context);
    // check that we read the 2nd stream event
    Assert.assertTrue(recordReader.nextKeyValue());
    StreamEvent output = recordReader.getCurrentValue();
    Assert.assertEquals(1001, output.getTimestamp());
    Assert.assertEquals("test", Bytes.toString(output.getBody()));
    // check that there is nothing more to read
    Assert.assertFalse(recordReader.nextKeyValue());
}

Example 2 with IdentityStreamEventDecoder

use of co.cask.cdap.data.stream.decoder.IdentityStreamEventDecoder in project cdap by caskdata.

the class StreamInputFormatTest method testIdentityStreamEventDecoder.

@Test
public void testIdentityStreamEventDecoder() {
    ImmutableMap.Builder<String, String> headers = ImmutableMap.builder();
    headers.put("key1", "value1");
    headers.put("key2", "value2");
    ByteBuffer buffer = Charsets.UTF_8.encode("testdata");
    StreamEvent event = new StreamEvent(headers.build(), buffer, System.currentTimeMillis());
    StreamEventDecoder<LongWritable, StreamEvent> decoder = new IdentityStreamEventDecoder();
    StreamEventDecoder.DecodeResult<LongWritable, StreamEvent> result = new StreamEventDecoder.DecodeResult<>();
    result = decoder.decode(event, result);
    Assert.assertEquals(new LongWritable(event.getTimestamp()), result.getKey());
    Assert.assertEquals(event, result.getValue());
}