Java StreamExecutionEnvironment.getConfig方法代碼示例

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
public void runKeyValueTest() throws Exception {
	final String topic = "keyvaluetest";
	createTestTopic(topic, 1, 1);
	final int elementCount = 5000;

	// ----------- Write some data into Kafka -------------------

	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
	env.setParallelism(1);
	env.setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	DataStream<Tuple2<Long, PojoValue>> kvStream = env.addSource(new SourceFunction<Tuple2<Long, PojoValue>>() {
		@Override
		public void run(SourceContext<Tuple2<Long, PojoValue>> ctx) throws Exception {
			Random rnd = new Random(1337);
			for (long i = 0; i < elementCount; i++) {
				PojoValue pojo = new PojoValue();
				pojo.when = new Date(rnd.nextLong());
				pojo.lon = rnd.nextLong();
				pojo.lat = i;
				// make every second key null to ensure proper "null" serialization
				Long key = (i % 2 == 0) ? null : i;
				ctx.collect(new Tuple2<>(key, pojo));
			}
		}

		@Override
		public void cancel() {
		}
	});

	KeyedSerializationSchema<Tuple2<Long, PojoValue>> schema = new TypeInformationKeyValueSerializationSchema<>(Long.class, PojoValue.class, env.getConfig());
	Properties producerProperties = FlinkKafkaProducerBase.getPropertiesFromBrokerList(brokerConnectionStrings);
	producerProperties.setProperty("retries", "3");
	kafkaServer.produceIntoKafka(kvStream, topic, schema, producerProperties, null);
	env.execute("Write KV to Kafka");

	// ----------- Read the data again -------------------

	env = StreamExecutionEnvironment.getExecutionEnvironment();
	env.setParallelism(1);
	env.setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	KeyedDeserializationSchema<Tuple2<Long, PojoValue>> readSchema = new TypeInformationKeyValueSerializationSchema<>(Long.class, PojoValue.class, env.getConfig());

	Properties props = new Properties();
	props.putAll(standardProps);
	props.putAll(secureProps);
	DataStream<Tuple2<Long, PojoValue>> fromKafka = env.addSource(kafkaServer.getConsumer(topic, readSchema, props));
	fromKafka.flatMap(new RichFlatMapFunction<Tuple2<Long, PojoValue>, Object>() {
		long counter = 0;
		@Override
		public void flatMap(Tuple2<Long, PojoValue> value, Collector<Object> out) throws Exception {
			// the elements should be in order.
			Assert.assertTrue("Wrong value " + value.f1.lat, value.f1.lat == counter);
			if (value.f1.lat % 2 == 0) {
				assertNull("key was not null", value.f0);
			} else {
				Assert.assertTrue("Wrong value " + value.f0, value.f0 == counter);
			}
			counter++;
			if (counter == elementCount) {
				// we got the right number of elements
				throw new SuccessException();
			}
		}
	});

	tryExecute(env, "Read KV from Kafka");

	deleteTestTopic(topic);
}
 

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
public StreamGraph(StreamExecutionEnvironment environment) {
	this.environment = environment;
	this.executionConfig = environment.getConfig();
	this.checkpointConfig = environment.getCheckpointConfig();

	// create an empty new stream graph.
	clear();
}
 

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
/**
 * Test delete behavior and metrics for producer.
 * @throws Exception
 */
public void runAllDeletesTest() throws Exception {
	final String topic = "alldeletestest";
	createTestTopic(topic, 1, 1);
	final int elementCount = 300;

	// ----------- Write some data into Kafka -------------------

	StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	DataStream<Tuple2<byte[], PojoValue>> kvStream = env.addSource(new SourceFunction<Tuple2<byte[], PojoValue>>() {
		@Override
		public void run(SourceContext<Tuple2<byte[], PojoValue>> ctx) throws Exception {
			Random rnd = new Random(1337);
			for (long i = 0; i < elementCount; i++) {
				final byte[] key = new byte[200];
				rnd.nextBytes(key);
				ctx.collect(new Tuple2<>(key, (PojoValue) null));
			}
		}

		@Override
		public void cancel() {
		}
	});

	TypeInformationKeyValueSerializationSchema<byte[], PojoValue> schema = new TypeInformationKeyValueSerializationSchema<>(byte[].class, PojoValue.class, env.getConfig());

	Properties producerProperties = FlinkKafkaProducerBase.getPropertiesFromBrokerList(brokerConnectionStrings);
	producerProperties.setProperty("retries", "3");
	producerProperties.putAll(secureProps);
	kafkaServer.produceIntoKafka(kvStream, topic, schema, producerProperties, null);

	env.execute("Write deletes to Kafka");

	// ----------- Read the data again -------------------

	env = StreamExecutionEnvironment.getExecutionEnvironment();
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	Properties props = new Properties();
	props.putAll(standardProps);
	props.putAll(secureProps);
	DataStream<Tuple2<byte[], PojoValue>> fromKafka = env.addSource(kafkaServer.getConsumer(topic, schema, props));

	fromKafka.flatMap(new RichFlatMapFunction<Tuple2<byte[], PojoValue>, Object>() {
		long counter = 0;
		@Override
		public void flatMap(Tuple2<byte[], PojoValue> value, Collector<Object> out) throws Exception {
			// ensure that deleted messages are passed as nulls
			assertNull(value.f1);
			counter++;
			if (counter == elementCount) {
				// we got the right number of elements
				throw new SuccessException();
			}
		}
	});

	tryExecute(env, "Read deletes from Kafka");

	deleteTestTopic(topic);
}
 

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
/**
 * Kafka 0.10 specific test, ensuring Timestamps are properly written to and read from Kafka
 */
@Test(timeout = 60000)
public void testTimestamps() throws Exception {

	final String topic = "tstopic";
	createTestTopic(topic, 3, 1);

	// ---------- Produce an event time stream into Kafka -------------------

	StreamExecutionEnvironment env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();
	env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);

	DataStream<Long> streamWithTimestamps = env.addSource(new SourceFunction<Long>() {
		boolean running = true;

		@Override
		public void run(SourceContext<Long> ctx) throws Exception {
			long i = 0;
			while(running) {
				ctx.collectWithTimestamp(i, i*2);
				if(i++ == 1000L) {
					running = false;
				}
			}
		}

		@Override
		public void cancel() {
			running = false;
		}
	});

	final TypeInformationSerializationSchema<Long> longSer = new TypeInformationSerializationSchema<>(TypeInfoParser.<Long>parse("Long"), env.getConfig());
	FlinkKafkaProducer010.FlinkKafkaProducer010Configuration prod = FlinkKafkaProducer010.writeToKafkaWithTimestamps(streamWithTimestamps, topic, new KeyedSerializationSchemaWrapper<>(longSer), standardProps, new KafkaPartitioner<Long>() {
		@Override
		public int partition(Long next, byte[] serializedKey, byte[] serializedValue, int numPartitions) {
			return (int)(next % 3);
		}
	});
	prod.setParallelism(3);
	prod.setWriteTimestampToKafka(true);
	env.execute("Produce some");

	// ---------- Consume stream from Kafka -------------------

	env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();
	env.setStreamTimeCharacteristic(TimeCharacteristic.EventTime);

	FlinkKafkaConsumer010<Long> kafkaSource = new FlinkKafkaConsumer010<>(topic, new LimitedLongDeserializer(), standardProps);
	kafkaSource.assignTimestampsAndWatermarks(new AssignerWithPunctuatedWatermarks<Long>() {
		@Nullable
		@Override
		public Watermark checkAndGetNextWatermark(Long lastElement, long extractedTimestamp) {
			if(lastElement % 10 == 0) {
				return new Watermark(lastElement);
			}
			return null;
		}

		@Override
		public long extractTimestamp(Long element, long previousElementTimestamp) {
			return previousElementTimestamp;
		}
	});

	DataStream<Long> stream = env.addSource(kafkaSource);
	GenericTypeInfo<Object> objectTypeInfo = new GenericTypeInfo<>(Object.class);
	stream.transform("timestamp validating operator", objectTypeInfo, new TimestampValidatingOperator()).setParallelism(1);

	env.execute("Consume again");

	deleteTestTopic(topic);
}
 

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
public void runKeyValueTest() throws Exception {
	final String topic = "keyvaluetest";
	createTestTopic(topic, 1, 1);
	final int ELEMENT_COUNT = 5000;

	// ----------- Write some data into Kafka -------------------

	StreamExecutionEnvironment env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	DataStream<Tuple2<Long, PojoValue>> kvStream = env.addSource(new SourceFunction<Tuple2<Long, PojoValue>>() {
		@Override
		public void run(SourceContext<Tuple2<Long, PojoValue>> ctx) throws Exception {
			Random rnd = new Random(1337);
			for (long i = 0; i < ELEMENT_COUNT; i++) {
				PojoValue pojo = new PojoValue();
				pojo.when = new Date(rnd.nextLong());
				pojo.lon = rnd.nextLong();
				pojo.lat = i;
				// make every second key null to ensure proper "null" serialization
				Long key = (i % 2 == 0) ? null : i;
				ctx.collect(new Tuple2<>(key, pojo));
			}
		}
		@Override
		public void cancel() {
		}
	});

	KeyedSerializationSchema<Tuple2<Long, PojoValue>> schema = new TypeInformationKeyValueSerializationSchema<>(Long.class, PojoValue.class, env.getConfig());
	Properties producerProperties = FlinkKafkaProducerBase.getPropertiesFromBrokerList(brokerConnectionStrings);
	producerProperties.setProperty("retries", "3");
	kafkaServer.produceIntoKafka(kvStream, topic, schema, producerProperties, null);
	env.execute("Write KV to Kafka");

	// ----------- Read the data again -------------------

	env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();


	KeyedDeserializationSchema<Tuple2<Long, PojoValue>> readSchema = new TypeInformationKeyValueSerializationSchema<>(Long.class, PojoValue.class, env.getConfig());

	Properties props = new Properties();
	props.putAll(standardProps);
	props.putAll(secureProps);
	DataStream<Tuple2<Long, PojoValue>> fromKafka = env.addSource(kafkaServer.getConsumer(topic, readSchema, props));
	fromKafka.flatMap(new RichFlatMapFunction<Tuple2<Long,PojoValue>, Object>() {
		long counter = 0;
		@Override
		public void flatMap(Tuple2<Long, PojoValue> value, Collector<Object> out) throws Exception {
			// the elements should be in order.
			Assert.assertTrue("Wrong value " + value.f1.lat, value.f1.lat == counter );
			if (value.f1.lat % 2 == 0) {
				assertNull("key was not null", value.f0);
			} else {
				Assert.assertTrue("Wrong value " + value.f0, value.f0 == counter);
			}
			counter++;
			if (counter == ELEMENT_COUNT) {
				// we got the right number of elements
				throw new SuccessException();
			}
		}
	});

	tryExecute(env, "Read KV from Kafka");

	deleteTestTopic(topic);
}
 

import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment; //導入方法依賴的package包/類
/**
 * Test delete behavior and metrics for producer
 * @throws Exception
 */
public void runAllDeletesTest() throws Exception {
	final String topic = "alldeletestest";
	createTestTopic(topic, 1, 1);
	final int ELEMENT_COUNT = 300;

	// ----------- Write some data into Kafka -------------------

	StreamExecutionEnvironment env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	DataStream<Tuple2<byte[], PojoValue>> kvStream = env.addSource(new SourceFunction<Tuple2<byte[], PojoValue>>() {
		@Override
		public void run(SourceContext<Tuple2<byte[], PojoValue>> ctx) throws Exception {
			Random rnd = new Random(1337);
			for (long i = 0; i < ELEMENT_COUNT; i++) {
				final byte[] key = new byte[200];
				rnd.nextBytes(key);
				ctx.collect(new Tuple2<>(key, (PojoValue) null));
			}
		}
		@Override
		public void cancel() {
		}
	});

	TypeInformationKeyValueSerializationSchema<byte[], PojoValue> schema = new TypeInformationKeyValueSerializationSchema<>(byte[].class, PojoValue.class, env.getConfig());

	Properties producerProperties = FlinkKafkaProducerBase.getPropertiesFromBrokerList(brokerConnectionStrings);
	producerProperties.setProperty("retries", "3");
	producerProperties.putAll(secureProps);
	kafkaServer.produceIntoKafka(kvStream, topic, schema, producerProperties, null);

	env.execute("Write deletes to Kafka");

	// ----------- Read the data again -------------------

	env = StreamExecutionEnvironment.createRemoteEnvironment("localhost", flinkPort);
	env.setParallelism(1);
	env.getConfig().setRestartStrategy(RestartStrategies.noRestart());
	env.getConfig().disableSysoutLogging();

	Properties props = new Properties();
	props.putAll(standardProps);
	props.putAll(secureProps);
	DataStream<Tuple2<byte[], PojoValue>> fromKafka = env.addSource(kafkaServer.getConsumer(topic, schema, props));

	fromKafka.flatMap(new RichFlatMapFunction<Tuple2<byte[], PojoValue>, Object>() {
		long counter = 0;
		@Override
		public void flatMap(Tuple2<byte[], PojoValue> value, Collector<Object> out) throws Exception {
			// ensure that deleted messages are passed as nulls
			assertNull(value.f1);
			counter++;
			if (counter == ELEMENT_COUNT) {
				// we got the right number of elements
				throw new SuccessException();
			}
		}
	});

	tryExecute(env, "Read deletes from Kafka");

	deleteTestTopic(topic);
}