@Test
public void testAvroScheme() {
byte[] byteArray = {
12, 109, 121, 112, 105, 112, 101, 14, 116, 101, 115, 116, 105, 110, 103, -96, 1, 4, 4, 105,
100, 18, 10, 115, 99, 111, 114, 101, -56, 1, 0, 8, 14, 115, 117, 98, 106, 101, 99, 116, 16,
114, 101, 108, 105, 103, 105, 111, 110, 16, 108, 97, 115, 116, 110, 97, 109, 101, 10, 115,
116, 97, 109, 109, 18, 102, 105, 114, 115, 116, 110, 97, 109, 101, 14, 114, 111, 115, 97, 110,
110, 101, 8, 100, 97, 116, 101, 20, 50, 48, 49, 52, 45, 49, 48, 45, 50, 50, 0, 0
};
try {
SpecificDatumReader<InsertMutation> reader =
new SpecificDatumReader<>(InsertMutation.getClassSchema());
Decoder decoder = DecoderFactory.get().binaryDecoder(byteArray, null);
InsertMutation insertMutation = reader.read(null, decoder);
LOG.info("ENTRY: " + insertMutation.toString());
LOG.info("DATABASE NAME: " + insertMutation.getDatabase());
assertEquals("mypipe", insertMutation.getDatabase().toString());
LOG.info("TABLE NAME: " + insertMutation.getTable());
assertEquals("testing", insertMutation.getTable().toString());
LOG.info("ID: " + AvroSchemaUtils.getIntegerValueByKey(insertMutation.getIntegers(), "id"));
assertEquals(
9, (int) AvroSchemaUtils.getIntegerValueByKey(insertMutation.getIntegers(), "id"));
LOG.info(
"FIRST NAME: "
+ AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "firstname"));
assertEquals(
"rosanne", AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "firstname"));
LOG.info(
"LAST NAME: "
+ AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "lastname"));
assertEquals(
"stamm", AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "lastname"));
LOG.info(
"SUBJECT: "
+ AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "subject"));
assertEquals(
"religion", AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "subject"));
LOG.info(
"SCORE: " + AvroSchemaUtils.getIntegerValueByKey(insertMutation.getIntegers(), "score"));
assertEquals(
100, (int) AvroSchemaUtils.getIntegerValueByKey(insertMutation.getIntegers(), "score"));
LOG.info("DATE: " + AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "date"));
assertEquals(
"2014-10-22", AvroSchemaUtils.getStringValueByKey(insertMutation.getStrings(), "date"));
} catch (IOException e) {
e.printStackTrace();
}
}
@SuppressWarnings({"unchecked", "deprecation"})
public static Object fromBytes(Schema schema, byte[] val) throws IOException {
Type type = schema.getType();
switch (type) {
case ENUM:
return AvroUtils.getEnumValue(schema, val[0]);
case STRING:
return new Utf8(Bytes.toString(val));
case BYTES:
return ByteBuffer.wrap(val);
case INT:
return Bytes.toInt(val);
case LONG:
return Bytes.toLong(val);
case FLOAT:
return Bytes.toFloat(val);
case DOUBLE:
return Bytes.toDouble(val);
case BOOLEAN:
return val[0] != 0;
case RECORD:
// TODO: This is TOO SLOW... OPTIMIZE
reader.setSchema(schema);
reader.setExpected(schema);
BinaryDecoder decoder = new BinaryDecoder(new ByteArrayInputStream(val));
return reader.read(null, decoder);
default:
throw new RuntimeException("Unknown type: " + type);
}
}
private void parseTopics() {
if (state.getProperty(TOPIC_LIST) != null) {
byte[] data = base64.decodeBase64(state.getProperty(TOPIC_LIST));
BinaryDecoder decoder = DecoderFactory.get().binaryDecoder(data, null);
SpecificDatumReader<Topic> avroReader = new SpecificDatumReader<>(Topic.class);
try { // NOSONAR
Topic decodedTopic;
while (!decoder.isEnd()) {
decodedTopic = avroReader.read(null, decoder);
LOG.debug("Loaded {}", decodedTopic);
topicMap.put(decodedTopic.getId(), decodedTopic);
}
} catch (Exception e) {
LOG.error("Unexpected exception occurred while reading information from decoder", e);
}
} else {
LOG.info("No topic list found in state");
}
}
@Test
public void testSchemolution() /* will not be televised */ throws AvroBaseException, IOException {
testSaveJsonFormat();
byte[] row = Bytes.toBytes("spullara");
HTablePool pool = new HTablePool();
HTableInterface userTable = pool.getTable(TABLE);
try {
Get get = new Get(row);
Result userRow = userTable.get(get);
byte[] schemaKey = userRow.getValue(COLUMN_FAMILY, Bytes.toBytes("s"));
HTableInterface schemaTable = pool.getTable(SCHEMA_TABLE);
Schema actual;
try {
Result schemaRow = schemaTable.get(new Get(schemaKey));
actual =
Schema.parse(
Bytes.toString(schemaRow.getValue(Bytes.toBytes("avro"), Bytes.toBytes("s"))));
} finally {
pool.putTable(schemaTable);
}
JsonDecoder jd =
new JsonDecoder(
actual, Bytes.toString(userRow.getValue(COLUMN_FAMILY, Bytes.toBytes("d"))));
// Read it as a slightly different schema lacking a field
InputStream stream = getClass().getResourceAsStream("/User2.json");
Schema expected = Schema.parse(stream);
{
SpecificDatumReader<User> sdr = new SpecificDatumReader<User>();
sdr.setSchema(actual);
sdr.setExpected(expected);
User loaded = sdr.read(null, jd);
assertEquals("Sam", loaded.firstName.toString());
assertEquals(null, loaded.mobile);
}
} finally {
pool.putTable(userTable);
}
}
