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Posted to commits@samza.apache.org by xi...@apache.org on 2018/10/03 01:42:04 UTC
[1/2] samza-hello-samza git commit: Update Cookbook examples
Repository: samza-hello-samza
Updated Branches:
refs/heads/latest b6acf190c -> f93741768
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/StreamTableJoinExample.java
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diff --git a/src/main/java/samza/examples/cookbook/StreamTableJoinExample.java b/src/main/java/samza/examples/cookbook/StreamTableJoinExample.java
new file mode 100644
index 0000000..4d5c57e
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/StreamTableJoinExample.java
@@ -0,0 +1,160 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.functions.StreamTableJoinFunction;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.KVSerde;
+import org.apache.samza.serializers.Serde;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.storage.kv.RocksDbTableDescriptor;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+import org.apache.samza.table.Table;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import samza.examples.cookbook.data.PageView;
+import samza.examples.cookbook.data.Profile;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * In this example, we join a stream of Page views with a table of user profiles, which is populated from an
+ * user profile stream. For instance, this is helpful for analysis that required additional information from
+ * user's profile.
+ *
+ * <p> Concepts covered: Performing stream-to-table joins.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Ensure that the topics "pageview-join-input", "profile-table-input" are created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-join-input --partitions 2 --replication-factor 1
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic profile-table-input --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/stream-table-join-example.properties
+ * </li>
+ * <li>
+ * Produce some messages to the "profile-table-input" topic with the same userId <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic profile-table-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "company": "LNKD"} <br/>
+ * {"userId": "user2", "company": "MSFT"}
+ * </li>
+ * <li>
+ * Produce some messages to the "pageview-join-input" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-join-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
+ * </li>
+ * <li>
+ * Consume messages from the "enriched-pageview-join-output" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic enriched-pageview-join-output
+ * </li>
+ * </ol>
+ *
+ */
+public class StreamTableJoinExample implements StreamApplication {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ private static final String PROFILE_STREAM_ID = "profile-table-input";
+ private static final String PAGEVIEW_STREAM_ID = "pageview-join-input";
+ private static final String OUTPUT_TOPIC = "enriched-pageview-join-output";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ Serde<Profile> profileSerde = new JsonSerdeV2<>(Profile.class);
+ Serde<PageView> pageViewSerde = new JsonSerdeV2<>(PageView.class);
+ Serde<EnrichedPageView> joinResultSerde = new JsonSerdeV2<>(EnrichedPageView.class);
+
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KafkaInputDescriptor<Profile> profileInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(PROFILE_STREAM_ID, profileSerde);
+ KafkaInputDescriptor<PageView> pageViewInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(PAGEVIEW_STREAM_ID, pageViewSerde);
+ KafkaOutputDescriptor<EnrichedPageView> joinResultOutputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_TOPIC, joinResultSerde);
+
+ RocksDbTableDescriptor<String, Profile> profileTableDescriptor =
+ new RocksDbTableDescriptor<String, Profile>("profile-table", KVSerde.of(new StringSerde(), profileSerde));
+
+ appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
+
+ MessageStream<Profile> profileStream = appDescriptor.getInputStream(profileInputDescriptor);
+ MessageStream<PageView> pageViewStream = appDescriptor.getInputStream(pageViewInputDescriptor);
+ OutputStream<EnrichedPageView> joinResultStream = appDescriptor.getOutputStream(joinResultOutputDescriptor);
+ Table<KV<String, Profile>> profileTable = appDescriptor.getTable(profileTableDescriptor);
+
+ profileStream
+ .map(profile -> KV.of(profile.userId, profile))
+ .sendTo(profileTable);
+
+ pageViewStream
+ .partitionBy(pv -> pv.userId, pv -> pv, KVSerde.of(new StringSerde(), pageViewSerde), "join")
+ .join(profileTable, new JoinFn())
+ .sendTo(joinResultStream);
+ }
+
+ private static class JoinFn implements StreamTableJoinFunction<String, KV<String, PageView>, KV<String, Profile>, EnrichedPageView> {
+ @Override
+ public EnrichedPageView apply(KV<String, PageView> message, KV<String, Profile> record) {
+ return record == null ? null :
+ new EnrichedPageView(message.getKey(), record.getValue().company, message.getValue().pageId);
+ }
+ @Override
+ public String getMessageKey(KV<String, PageView> message) {
+ return message.getKey();
+ }
+ @Override
+ public String getRecordKey(KV<String, Profile> record) {
+ return record.getKey();
+ }
+ }
+
+ static public class EnrichedPageView {
+
+ public final String userId;
+ public final String company;
+ public final String pageId;
+
+ public EnrichedPageView(String userId, String company, String pageId) {
+ this.userId = userId;
+ this.company = company;
+ this.pageId = pageId;
+ }
+ }
+
+}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/TumblingPageViewCounterApp.java
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diff --git a/src/main/java/samza/examples/cookbook/TumblingPageViewCounterApp.java b/src/main/java/samza/examples/cookbook/TumblingPageViewCounterApp.java
deleted file mode 100644
index 69a8e7d..0000000
--- a/src/main/java/samza/examples/cookbook/TumblingPageViewCounterApp.java
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.operators.windows.Windows;
-import org.apache.samza.serializers.IntegerSerde;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.KVSerde;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import samza.examples.cookbook.data.PageView;
-import samza.examples.cookbook.data.UserPageViews;
-
-import java.time.Duration;
-import java.util.List;
-import java.util.Map;
-
-/**
- * In this example, we group a stream of page views by country, and compute the number of page views over a tumbling time
- * window.
- *
- * <p> Concepts covered: Performing Group-By style aggregations on tumbling time windows.
- *
- * <p> Tumbling windows divide a stream into a set of contiguous, fixed-sized, non-overlapping time intervals.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Ensure that the topic "pageview-tumbling-input" is created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-tumbling-input --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/tumbling-pageview-counter.properties
- * </li>
- * <li>
- * Produce some messages to the "pageview-tumbling-input" topic, waiting for some time between messages <br/>
- ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-tumbling-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/home"} <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/search"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/home"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/sports"} <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/news"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/fashion"}
- * </li>
- * <li>
- * Consume messages from the "pageview-tumbling-output" topic (e.g. bin/kafka-console-consumer.sh)
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-tumbling-output --property print.key=true <br/>
- * </li>
- * </ol>
- *
- */
-public class TumblingPageViewCounterApp implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- private static final String INPUT_STREAM_ID = "pageview-tumbling-input";
- private static final String OUTPUT_STREAM_ID = "pageview-tumbling-output";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KVSerde<String, PageView> pageViewSerde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageView.class));
- KVSerde<String, UserPageViews> userPageViewSerde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(UserPageViews.class));
-
- KafkaInputDescriptor<KV<String, PageView>> pageViewInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, pageViewSerde);
- KafkaOutputDescriptor<KV<String, UserPageViews>> userPageViewOutputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, userPageViewSerde);
-
- appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
- MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
- OutputStream<KV<String, UserPageViews>> outputStream = appDescriptor.getOutputStream(userPageViewOutputDescriptor);
-
- pageViews
- .partitionBy(kv -> kv.value.userId, kv -> kv.value, "userId")
- .window(Windows.keyedTumblingWindow(
- kv -> kv.key, Duration.ofSeconds(5), () -> 0, (m, prevCount) -> prevCount + 1,
- new StringSerde(), new IntegerSerde()), "count")
- .map(windowPane -> {
- String userId = windowPane.getKey().getKey();
- int views = windowPane.getMessage();
- return KV.of(userId, new UserPageViews(userId, views));
- })
- .sendTo(outputStream);
- }
-}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/TumblingWindowExample.java
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diff --git a/src/main/java/samza/examples/cookbook/TumblingWindowExample.java b/src/main/java/samza/examples/cookbook/TumblingWindowExample.java
new file mode 100644
index 0000000..51c2056
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/TumblingWindowExample.java
@@ -0,0 +1,121 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import java.io.Serializable;
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.windows.Windows;
+import org.apache.samza.serializers.IntegerSerde;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.KVSerde;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import samza.examples.cookbook.data.PageView;
+import samza.examples.cookbook.data.UserPageViews;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * In this example, we group a stream of page views by country, and compute the number of page views over a tumbling time
+ * window.
+ *
+ * <p> Concepts covered: Performing Group-By style aggregations on tumbling time windows.
+ *
+ * <p> Tumbling windows divide a stream into a set of contiguous, fixed-sized, non-overlapping time intervals.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Ensure that the topic "pageview-tumbling-input" is created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-tumbling-input --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/tumbling-window-example.properties
+ * </li>
+ * <li>
+ * Produce some messages to the "pageview-tumbling-input" topic, waiting for some time between messages <br/>
+ ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-tumbling-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/home"} <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/search"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/home"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/sports"} <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/news"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/fashion"}
+ * </li>
+ * <li>
+ * Consume messages from the "pageview-tumbling-output" topic (e.g. bin/kafka-console-consumer.sh)
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-tumbling-output --property print.key=true <br/>
+ * </li>
+ * </ol>
+ *
+ */
+public class TumblingWindowExample implements StreamApplication, Serializable {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ private static final String INPUT_STREAM_ID = "pageview-tumbling-input";
+ private static final String OUTPUT_STREAM_ID = "pageview-tumbling-output";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KVSerde<String, PageView> pageViewSerde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageView.class));
+ KVSerde<String, UserPageViews> userPageViewSerde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(UserPageViews.class));
+
+ KafkaInputDescriptor<KV<String, PageView>> pageViewInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, pageViewSerde);
+ KafkaOutputDescriptor<KV<String, UserPageViews>> userPageViewOutputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, userPageViewSerde);
+
+ appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
+ MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
+ OutputStream<KV<String, UserPageViews>> outputStream = appDescriptor.getOutputStream(userPageViewOutputDescriptor);
+
+ pageViews
+ .partitionBy(kv -> kv.value.userId, kv -> kv.value, pageViewSerde, "userId")
+ .window(Windows.keyedTumblingWindow(
+ kv -> kv.key, Duration.ofSeconds(5), () -> 0, (m, prevCount) -> prevCount + 1,
+ new StringSerde(), new IntegerSerde()), "count")
+ .map(windowPane -> {
+ String userId = windowPane.getKey().getKey();
+ int views = windowPane.getMessage();
+ return KV.of(userId, new UserPageViews(userId, views));
+ })
+ .sendTo(outputStream);
+ }
+}
[2/2] samza-hello-samza git commit: Update Cookbook examples
Posted by xi...@apache.org.
Update Cookbook examples
Updating cookbook examples with latest api. I verified all the applications except table examples. Found a bug (https://github.com/apache/samza/pull/684) in metadatastore with Table example. Once the fix is in, need to verify the table examples again.
Also change the name of the examples as we discussed before.
Author: xinyuiscool <xi...@gmail.com>
Reviewers: Prateek M <pr...@apache.org>
Closes #35 from xinyuiscool/cookbook
Project: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/repo
Commit: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/commit/f9374176
Tree: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/tree/f9374176
Diff: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/diff/f9374176
Branch: refs/heads/latest
Commit: f9374176802bd4b67ff320fe4a1dfe499ff9eb41
Parents: b6acf19
Author: xinyuiscool <xi...@gmail.com>
Authored: Tue Oct 2 18:41:55 2018 -0700
Committer: xiliu <xi...@linkedin.com>
Committed: Tue Oct 2 18:41:55 2018 -0700
----------------------------------------------------------------------
src/main/config/filter-example.properties | 28 +++
src/main/config/join-example.properties | 28 +++
.../config/pageview-adclick-joiner.properties | 28 ---
src/main/config/pageview-filter.properties | 28 ---
.../pageview-profile-table-joiner.properties | 27 ---
src/main/config/pageview-sessionizer.properties | 28 ---
.../config/remote-table-join-example.properties | 27 +++
.../config/session-window-example.properties | 28 +++
.../config/stock-price-table-joiner.properties | 27 ---
.../config/stream-table-join-example.properties | 27 +++
.../config/tumbling-pageview-counter.properties | 28 ---
.../config/tumbling-window-example.properties | 28 +++
.../samza/examples/cookbook/FilterExample.java | 101 ++++++++++
.../samza/examples/cookbook/JoinExample.java | 163 +++++++++++++++
.../cookbook/PageViewAdClickJoiner.java | 162 ---------------
.../examples/cookbook/PageViewFilterApp.java | 102 ----------
.../cookbook/PageViewProfileTableJoiner.java | 160 ---------------
.../cookbook/PageViewSessionizerApp.java | 119 -----------
.../cookbook/RemoteTableJoinExample.java | 200 +++++++++++++++++++
.../examples/cookbook/SessionWindowExample.java | 120 +++++++++++
.../cookbook/StockPriceTableJoiner.java | 200 -------------------
.../cookbook/StreamTableJoinExample.java | 160 +++++++++++++++
.../cookbook/TumblingPageViewCounterApp.java | 120 -----------
.../cookbook/TumblingWindowExample.java | 121 +++++++++++
24 files changed, 1031 insertions(+), 1029 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/filter-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/filter-example.properties b/src/main/config/filter-example.properties
new file mode 100644
index 0000000..20ca0cd
--- /dev/null
+++ b/src/main/config/filter-example.properties
@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=pageview-filter
+job.container.count=2
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.FilterExample
+task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/join-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/join-example.properties b/src/main/config/join-example.properties
new file mode 100644
index 0000000..71ff5c0
--- /dev/null
+++ b/src/main/config/join-example.properties
@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=pageview-adclick-joiner
+job.container.count=2
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.JoinExample
+task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/pageview-adclick-joiner.properties
----------------------------------------------------------------------
diff --git a/src/main/config/pageview-adclick-joiner.properties b/src/main/config/pageview-adclick-joiner.properties
deleted file mode 100644
index 8764974..0000000
--- a/src/main/config/pageview-adclick-joiner.properties
+++ /dev/null
@@ -1,28 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=pageview-adclick-joiner
-job.container.count=2
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.PageViewAdClickJoiner
-task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/pageview-filter.properties
----------------------------------------------------------------------
diff --git a/src/main/config/pageview-filter.properties b/src/main/config/pageview-filter.properties
deleted file mode 100644
index 84228fa..0000000
--- a/src/main/config/pageview-filter.properties
+++ /dev/null
@@ -1,28 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=pageview-filter
-job.container.count=2
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.PageViewFilterApp
-task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/pageview-profile-table-joiner.properties
----------------------------------------------------------------------
diff --git a/src/main/config/pageview-profile-table-joiner.properties b/src/main/config/pageview-profile-table-joiner.properties
deleted file mode 100644
index d8c0fcf..0000000
--- a/src/main/config/pageview-profile-table-joiner.properties
+++ /dev/null
@@ -1,27 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=pageview-profile-table-joiner
-job.container.count=2
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.PageViewProfileTableJoiner
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/pageview-sessionizer.properties
----------------------------------------------------------------------
diff --git a/src/main/config/pageview-sessionizer.properties b/src/main/config/pageview-sessionizer.properties
deleted file mode 100644
index 74109ad..0000000
--- a/src/main/config/pageview-sessionizer.properties
+++ /dev/null
@@ -1,28 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=pageview-sessionizer
-job.container.count=2
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.PageViewSessionizerApp
-task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/remote-table-join-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/remote-table-join-example.properties b/src/main/config/remote-table-join-example.properties
new file mode 100644
index 0000000..62c7580
--- /dev/null
+++ b/src/main/config/remote-table-join-example.properties
@@ -0,0 +1,27 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=stock-price-table-joiner
+job.container.count=1
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.RemoteTableJoinExample
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/session-window-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/session-window-example.properties b/src/main/config/session-window-example.properties
new file mode 100644
index 0000000..407cb25
--- /dev/null
+++ b/src/main/config/session-window-example.properties
@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=pageview-sessionizer
+job.container.count=2
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.SessionWindowExample
+task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/stock-price-table-joiner.properties
----------------------------------------------------------------------
diff --git a/src/main/config/stock-price-table-joiner.properties b/src/main/config/stock-price-table-joiner.properties
deleted file mode 100644
index 410cdd4..0000000
--- a/src/main/config/stock-price-table-joiner.properties
+++ /dev/null
@@ -1,27 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=stock-price-table-joiner
-job.container.count=1
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.StockPriceTableJoiner
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/stream-table-join-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/stream-table-join-example.properties b/src/main/config/stream-table-join-example.properties
new file mode 100644
index 0000000..8108df1
--- /dev/null
+++ b/src/main/config/stream-table-join-example.properties
@@ -0,0 +1,27 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=pageview-profile-table-joiner
+job.container.count=2
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.StreamTableJoinExample
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/tumbling-pageview-counter.properties
----------------------------------------------------------------------
diff --git a/src/main/config/tumbling-pageview-counter.properties b/src/main/config/tumbling-pageview-counter.properties
deleted file mode 100644
index 70ca290..0000000
--- a/src/main/config/tumbling-pageview-counter.properties
+++ /dev/null
@@ -1,28 +0,0 @@
-# Licensed to the Apache Software Foundation (ASF) under one
-# or more contributor license agreements. See the NOTICE file
-# distributed with this work for additional information
-# regarding copyright ownership. The ASF licenses this file
-# to you under the Apache License, Version 2.0 (the
-# "License"); you may not use this file except in compliance
-# with the License. You may obtain a copy of the License at
-#
-# http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing,
-# software distributed under the License is distributed on an
-# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
-# KIND, either express or implied. See the License for the
-# specific language governing permissions and limitations
-# under the License.
-
-# Job
-job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
-job.name=tumbling-pageview-counter
-job.container.count=2
-
-# YARN
-yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
-
-# Task
-app.class=samza.examples.cookbook.TumblingPageViewCounterApp
-task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/config/tumbling-window-example.properties
----------------------------------------------------------------------
diff --git a/src/main/config/tumbling-window-example.properties b/src/main/config/tumbling-window-example.properties
new file mode 100644
index 0000000..992185c
--- /dev/null
+++ b/src/main/config/tumbling-window-example.properties
@@ -0,0 +1,28 @@
+# Licensed to the Apache Software Foundation (ASF) under one
+# or more contributor license agreements. See the NOTICE file
+# distributed with this work for additional information
+# regarding copyright ownership. The ASF licenses this file
+# to you under the Apache License, Version 2.0 (the
+# "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing,
+# software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+# KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations
+# under the License.
+
+# Job
+job.factory.class=org.apache.samza.job.yarn.YarnJobFactory
+job.name=tumbling-pageview-counter
+job.container.count=2
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.TumblingWindowExample
+task.window.ms=2000
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/FilterExample.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/FilterExample.java b/src/main/java/samza/examples/cookbook/FilterExample.java
new file mode 100644
index 0000000..bcf5b18
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/FilterExample.java
@@ -0,0 +1,101 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.KVSerde;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import samza.examples.cookbook.data.PageView;
+
+import java.util.List;
+import java.util.Map;
+
+/**
+ * In this example, we demonstrate filtering out some bad events in the stream.
+ *
+ * <p>Concepts covered: Using stateless operators on a stream.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Ensure that the topic "pageview-filter-input" is created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-filter-input --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/filter-example.properties
+ * </li>
+ * <li>
+ * Produce some messages to the "pageview-filter-input" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-filter-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
+ * {"userId": "invalidUserId", "country": "france", "pageId":"facebook.com"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
+ * </li>
+ * <li>
+ * Consume messages from the "pageview-filter-output" topic (e.g. bin/kafka-console-consumer.sh)
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-filter-output --property print.key=true
+ * </li>
+ * </ol>
+ */
+public class FilterExample implements StreamApplication {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ private static final String INPUT_STREAM_ID = "pageview-filter-input";
+ private static final String OUTPUT_STREAM_ID = "pageview-filter-output";
+ private static final String INVALID_USER_ID = "invalidUserId";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KVSerde<String, PageView> serde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageView.class));
+ KafkaInputDescriptor<KV<String, PageView>> inputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, serde);
+ KafkaOutputDescriptor<KV<String, PageView>> outputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, serde);
+
+ appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
+
+ MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(inputDescriptor);
+ OutputStream<KV<String, PageView>> filteredPageViews = appDescriptor.getOutputStream(outputDescriptor);
+
+ pageViews
+ .filter(kv -> !INVALID_USER_ID.equals(kv.value.userId))
+ .sendTo(filteredPageViews);
+ }
+}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/JoinExample.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/JoinExample.java b/src/main/java/samza/examples/cookbook/JoinExample.java
new file mode 100644
index 0000000..05a358d
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/JoinExample.java
@@ -0,0 +1,163 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import java.io.Serializable;
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.functions.JoinFunction;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.KVSerde;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import samza.examples.cookbook.data.AdClick;
+import samza.examples.cookbook.data.PageView;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * In this example, we join a stream of Page views with a stream of Ad clicks. For instance, this is helpful for
+ * analysis on what pages served an Ad that was clicked.
+ *
+ * <p> Concepts covered: Performing stream to stream Joins.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Ensure that the topics "pageview-join-input", "adclick-join-input" are created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-join-input --partitions 2 --replication-factor 1
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic adclick-join-input --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/join-example.properties
+ * </li>
+ * <li>
+ * Produce some messages to the "pageview-join-input" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-join-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
+ * </li>
+ * <li>
+ * Produce some messages to the "adclick-join-input" topic with the same pageKey <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic adclick-join-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "adId": "adClickId1", "pageId":"google.com"} <br/>
+ * {"userId": "user1", "adId": "adClickId2", "pageId":"yahoo.com"}
+ * </li>
+ * <li>
+ * Consume messages from the "pageview-adclick-join-output" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-adclick-join-output --property print.key=true
+ * </li>
+ * </ol>
+ *
+ */
+public class JoinExample implements StreamApplication, Serializable {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ private static final String PAGEVIEW_STREAM_ID = "pageview-join-input";
+ private static final String ADCLICK_STREAM_ID = "adclick-join-input";
+ private static final String OUTPUT_STREAM_ID = "pageview-adclick-join-output";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ StringSerde stringSerde = new StringSerde();
+ JsonSerdeV2<PageView> pageViewSerde = new JsonSerdeV2<>(PageView.class);
+ JsonSerdeV2<AdClick> adClickSerde = new JsonSerdeV2<>(AdClick.class);
+ JsonSerdeV2<JoinResult> joinResultSerde = new JsonSerdeV2<>(JoinResult.class);
+
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KafkaInputDescriptor<PageView> pageViewInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(PAGEVIEW_STREAM_ID, pageViewSerde);
+ KafkaInputDescriptor<AdClick> adClickInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(ADCLICK_STREAM_ID, adClickSerde);
+ KafkaOutputDescriptor<JoinResult> joinResultOutputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, joinResultSerde);
+
+ appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
+
+ MessageStream<PageView> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
+ MessageStream<AdClick> adClicks = appDescriptor.getInputStream(adClickInputDescriptor);
+ OutputStream<JoinResult> joinResults = appDescriptor.getOutputStream(joinResultOutputDescriptor);
+
+ JoinFunction<String, PageView, AdClick, JoinResult> pageViewAdClickJoinFunction =
+ new JoinFunction<String, PageView, AdClick, JoinResult>() {
+ @Override
+ public JoinResult apply(PageView pageView, AdClick adClick) {
+ return new JoinResult(pageView.pageId, pageView.userId, pageView.country, adClick.getAdId());
+ }
+
+ @Override
+ public String getFirstKey(PageView pageView) {
+ return pageView.pageId;
+ }
+
+ @Override
+ public String getSecondKey(AdClick adClick) {
+ return adClick.getPageId();
+ }
+ };
+
+ MessageStream<PageView> repartitionedPageViews =
+ pageViews
+ .partitionBy(pv -> pv.pageId, pv -> pv, KVSerde.of(stringSerde, pageViewSerde), "pageview")
+ .map(KV::getValue);
+
+ MessageStream<AdClick> repartitionedAdClicks =
+ adClicks
+ .partitionBy(AdClick::getPageId, ac -> ac, KVSerde.of(stringSerde, adClickSerde), "adclick")
+ .map(KV::getValue);
+
+ repartitionedPageViews
+ .join(repartitionedAdClicks, pageViewAdClickJoinFunction,
+ stringSerde, pageViewSerde, adClickSerde, Duration.ofMinutes(3), "join")
+ .sendTo(joinResults);
+ }
+
+ static class JoinResult {
+ public String pageId;
+ public String userId;
+ public String country;
+ public String adId;
+
+ public JoinResult(String pageId, String userId, String country, String adId) {
+ this.pageId = pageId;
+ this.userId = userId;
+ this.country = country;
+ this.adId = adId;
+ }
+ }
+}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/PageViewAdClickJoiner.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/PageViewAdClickJoiner.java b/src/main/java/samza/examples/cookbook/PageViewAdClickJoiner.java
deleted file mode 100644
index 4c5d86b..0000000
--- a/src/main/java/samza/examples/cookbook/PageViewAdClickJoiner.java
+++ /dev/null
@@ -1,162 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.operators.functions.JoinFunction;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.KVSerde;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import samza.examples.cookbook.data.AdClick;
-import samza.examples.cookbook.data.PageView;
-
-import java.time.Duration;
-import java.util.List;
-import java.util.Map;
-
-/**
- * In this example, we join a stream of Page views with a stream of Ad clicks. For instance, this is helpful for
- * analysis on what pages served an Ad that was clicked.
- *
- * <p> Concepts covered: Performing stream to stream Joins.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Ensure that the topics "pageview-join-input", "adclick-join-input" are created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-join-input --partitions 2 --replication-factor 1
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic adclick-join-input --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/pageview-adclick-joiner.properties
- * </li>
- * <li>
- * Produce some messages to the "pageview-join-input" topic <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-join-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
- * </li>
- * <li>
- * Produce some messages to the "adclick-join-input" topic with the same pageKey <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic adclick-join-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "adId": "adClickId1", "pageId":"google.com"} <br/>
- * {"userId": "user1", "adId": "adClickId2", "pageId":"yahoo.com"}
- * </li>
- * <li>
- * Consume messages from the "pageview-adclick-join-output" topic <br/>
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-adclick-join-output --property print.key=true
- * </li>
- * </ol>
- *
- */
-public class PageViewAdClickJoiner implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- private static final String PAGEVIEW_STREAM_ID = "pageview-join-input";
- private static final String ADCLICK_STREAM_ID = "adclick-join-input";
- private static final String OUTPUT_STREAM_ID = "pageview-adclick-join-output";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- StringSerde stringSerde = new StringSerde();
- JsonSerdeV2<PageView> pageViewSerde = new JsonSerdeV2<>(PageView.class);
- JsonSerdeV2<AdClick> adClickSerde = new JsonSerdeV2<>(AdClick.class);
- JsonSerdeV2<JoinResult> joinResultSerde = new JsonSerdeV2<>(JoinResult.class);
-
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KafkaInputDescriptor<PageView> pageViewInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(PAGEVIEW_STREAM_ID, pageViewSerde);
- KafkaInputDescriptor<AdClick> adClickInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(ADCLICK_STREAM_ID, adClickSerde);
- KafkaOutputDescriptor<JoinResult> joinResultOutputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, joinResultSerde);
-
- appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
-
- MessageStream<PageView> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
- MessageStream<AdClick> adClicks = appDescriptor.getInputStream(adClickInputDescriptor);
- OutputStream<JoinResult> joinResults = appDescriptor.getOutputStream(joinResultOutputDescriptor);
-
- JoinFunction<String, PageView, AdClick, JoinResult> pageViewAdClickJoinFunction =
- new JoinFunction<String, PageView, AdClick, JoinResult>() {
- @Override
- public JoinResult apply(PageView pageView, AdClick adClick) {
- return new JoinResult(pageView.pageId, pageView.userId, pageView.country, adClick.getAdId());
- }
-
- @Override
- public String getFirstKey(PageView pageView) {
- return pageView.pageId;
- }
-
- @Override
- public String getSecondKey(AdClick adClick) {
- return adClick.getPageId();
- }
- };
-
- MessageStream<PageView> repartitionedPageViews =
- pageViews
- .partitionBy(pv -> pv.pageId, pv -> pv, KVSerde.of(stringSerde, pageViewSerde), "pageview")
- .map(KV::getValue);
-
- MessageStream<AdClick> repartitionedAdClicks =
- adClicks
- .partitionBy(AdClick::getPageId, ac -> ac, KVSerde.of(stringSerde, adClickSerde), "adclick")
- .map(KV::getValue);
-
- repartitionedPageViews
- .join(repartitionedAdClicks, pageViewAdClickJoinFunction,
- stringSerde, pageViewSerde, adClickSerde, Duration.ofMinutes(3), "join")
- .sendTo(joinResults);
- }
-
- static class JoinResult {
- public String pageId;
- public String userId;
- public String country;
- public String adId;
-
- public JoinResult(String pageId, String userId, String country, String adId) {
- this.pageId = pageId;
- this.userId = userId;
- this.country = country;
- this.adId = adId;
- }
- }
-}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/PageViewFilterApp.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/PageViewFilterApp.java b/src/main/java/samza/examples/cookbook/PageViewFilterApp.java
deleted file mode 100644
index e131a8f..0000000
--- a/src/main/java/samza/examples/cookbook/PageViewFilterApp.java
+++ /dev/null
@@ -1,102 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.KVSerde;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import samza.examples.cookbook.data.PageView;
-
-import java.util.List;
-import java.util.Map;
-
-/**
- * In this example, we demonstrate re-partitioning a stream of page views and filtering out some bad events in the stream.
- *
- * <p>Concepts covered: Using stateless operators on a stream, Re-partitioning a stream.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Ensure that the topic "pageview-filter-input" is created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-filter-input --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/pageview-filter.properties
- * </li>
- * <li>
- * Produce some messages to the "pageview-filter-input" topic <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-filter-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
- * {"userId": "invalidUserId", "country": "france", "pageId":"facebook.com"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
- * </li>
- * <li>
- * Consume messages from the "pageview-filter-output" topic (e.g. bin/kafka-console-consumer.sh)
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-filter-output --property print.key=true
- * </li>
- * </ol>
- */
-public class PageViewFilterApp implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- private static final String INPUT_STREAM_ID = "pageview-filter-input";
- private static final String OUTPUT_STREAM_ID = "pageview-filter-output";
- private static final String INVALID_USER_ID = "invalidUserId";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KVSerde<String, PageView> serde = KVSerde.of(new StringSerde(), new JsonSerdeV2<>(PageView.class));
- KafkaInputDescriptor<KV<String, PageView>> inputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, serde);
- KafkaOutputDescriptor<KV<String, PageView>> outputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, serde);
-
- appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
-
- MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(inputDescriptor);
- OutputStream<KV<String, PageView>> filteredPageViews = appDescriptor.getOutputStream(outputDescriptor);
-
- pageViews
- .partitionBy(kv -> kv.value.userId, kv -> kv.value, "pageview")
- .filter(kv -> !INVALID_USER_ID.equals(kv.value.userId))
- .sendTo(filteredPageViews);
- }
-}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java b/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
deleted file mode 100644
index f67e9c1..0000000
--- a/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
+++ /dev/null
@@ -1,160 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.operators.functions.StreamTableJoinFunction;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.KVSerde;
-import org.apache.samza.serializers.Serde;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.storage.kv.RocksDbTableDescriptor;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-import org.apache.samza.table.Table;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import samza.examples.cookbook.data.PageView;
-import samza.examples.cookbook.data.Profile;
-
-import java.util.List;
-import java.util.Map;
-
-/**
- * In this example, we join a stream of Page views with a table of user profiles, which is populated from an
- * user profile stream. For instance, this is helpful for analysis that required additional information from
- * user's profile.
- *
- * <p> Concepts covered: Performing stream-to-table joins.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Ensure that the topics "pageview-join-input", "profile-table-input" are created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-join-input --partitions 2 --replication-factor 1
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic profile-table-input --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/pageview-profile-table-joiner.properties
- * </li>
- * <li>
- * Produce some messages to the "profile-table-input" topic with the same userId <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic profile-table-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "company": "LNKD"} <br/>
- * {"userId": "user2", "company": "MSFT"}
- * </li>
- * <li>
- * Produce some messages to the "pageview-join-input" topic <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-join-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com"}
- * </li>
- * <li>
- * Consume messages from the "enriched-pageview-join-output" topic <br/>
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic enriched-pageview-join-output
- * </li>
- * </ol>
- *
- */
-public class PageViewProfileTableJoiner implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- private static final String PROFILE_STREAM_ID = "profile-table-input";
- private static final String PAGEVIEW_STREAM_ID = "pageview-join-input";
- private static final String OUTPUT_TOPIC = "enriched-pageview-join-output";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- Serde<Profile> profileSerde = new JsonSerdeV2<>(Profile.class);
- Serde<PageView> pageViewSerde = new JsonSerdeV2<>(PageView.class);
- Serde<EnrichedPageView> joinResultSerde = new JsonSerdeV2<>(EnrichedPageView.class);
-
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KafkaInputDescriptor<Profile> profileInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(PROFILE_STREAM_ID, profileSerde);
- KafkaInputDescriptor<PageView> pageViewInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(PAGEVIEW_STREAM_ID, pageViewSerde);
- KafkaOutputDescriptor<EnrichedPageView> joinResultOutputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_TOPIC, joinResultSerde);
-
- RocksDbTableDescriptor<String, Profile> profileTableDescriptor =
- new RocksDbTableDescriptor<String, Profile>("profile-table", KVSerde.of(new StringSerde(), profileSerde));
-
- appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
-
- MessageStream<Profile> profileStream = appDescriptor.getInputStream(profileInputDescriptor);
- MessageStream<PageView> pageViewStream = appDescriptor.getInputStream(pageViewInputDescriptor);
- OutputStream<EnrichedPageView> joinResultStream = appDescriptor.getOutputStream(joinResultOutputDescriptor);
- Table<KV<String, Profile>> profileTable = appDescriptor.getTable(profileTableDescriptor);
-
- profileStream
- .map(profile -> KV.of(profile.userId, profile))
- .sendTo(profileTable);
-
- pageViewStream
- .partitionBy(pv -> pv.userId, pv -> pv, KVSerde.of(new StringSerde(), pageViewSerde), "join")
- .join(profileTable, new JoinFn())
- .sendTo(joinResultStream);
- }
-
- private class JoinFn implements StreamTableJoinFunction<String, KV<String, PageView>, KV<String, Profile>, EnrichedPageView> {
- @Override
- public EnrichedPageView apply(KV<String, PageView> message, KV<String, Profile> record) {
- return record == null ? null :
- new EnrichedPageView(message.getKey(), record.getValue().company, message.getValue().pageId);
- }
- @Override
- public String getMessageKey(KV<String, PageView> message) {
- return message.getKey();
- }
- @Override
- public String getRecordKey(KV<String, Profile> record) {
- return record.getKey();
- }
- }
-
- static public class EnrichedPageView {
-
- public final String userId;
- public final String company;
- public final String pageId;
-
- public EnrichedPageView(String userId, String company, String pageId) {
- this.userId = userId;
- this.company = company;
- this.pageId = pageId;
- }
- }
-
-}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/PageViewSessionizerApp.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/PageViewSessionizerApp.java b/src/main/java/samza/examples/cookbook/PageViewSessionizerApp.java
deleted file mode 100644
index fb17974..0000000
--- a/src/main/java/samza/examples/cookbook/PageViewSessionizerApp.java
+++ /dev/null
@@ -1,119 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.operators.windows.Windows;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.KVSerde;
-import org.apache.samza.serializers.Serde;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-import samza.examples.cookbook.data.PageView;
-import samza.examples.cookbook.data.UserPageViews;
-
-import java.time.Duration;
-import java.util.List;
-import java.util.Map;
-
-/**
- * In this example, we group page views by userId into sessions, and compute the number of page views for each user
- * session. A session is considered closed when there is no user activity for a 10 second duration.
- *
- * <p>Concepts covered: Using session windows to group data in a stream, Re-partitioning a stream.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Ensure that the topic "pageview-session-input" is created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-session-input --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/pageview-sessionizer.properties
- * </li>
- * <li>
- * Produce some messages to the "pageview-session-input" topic <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-session-input --broker-list localhost:9092 <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/home"} <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/search"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/home"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/sports"} <br/>
- * {"userId": "user1", "country": "india", "pageId":"google.com/news"} <br/>
- * {"userId": "user2", "country": "china", "pageId":"yahoo.com/fashion"}
- * </li>
- * <li>
- * Consume messages from the "pageview-session-output" topic (e.g. bin/kafka-console-consumer.sh)
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-session-output --property print.key=true
- * </li>
- * </ol>
- *
- */
-public class PageViewSessionizerApp implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- private static final String INPUT_STREAM_ID = "pageview-session-input";
- private static final String OUTPUT_STREAM_ID = "pageview-session-output";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- Serde<String> stringSerde = new StringSerde();
- Serde<KV<String, PageView>> pageViewKVSerde = KVSerde.of(stringSerde, new JsonSerdeV2<>(PageView.class));
- Serde<KV<String, UserPageViews>> userPageViewSerde = KVSerde.of(stringSerde, new JsonSerdeV2<>(UserPageViews.class));
-
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KafkaInputDescriptor<KV<String, PageView>> pageViewInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, pageViewKVSerde);
- KafkaOutputDescriptor<KV<String, UserPageViews>> userPageViewsOutputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, userPageViewSerde);
-
- appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
-
- MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
- OutputStream<KV<String, UserPageViews>> userPageViews = appDescriptor.getOutputStream(userPageViewsOutputDescriptor);
-
- pageViews
- .partitionBy(kv -> kv.value.userId, kv -> kv.value, "pageview")
- .window(Windows.keyedSessionWindow(kv -> kv.value.userId,
- Duration.ofSeconds(10), stringSerde, pageViewKVSerde), "usersession")
- .map(windowPane -> {
- String userId = windowPane.getKey().getKey();
- int views = windowPane.getMessage().size();
- return KV.of(userId, new UserPageViews(userId, views));
- })
- .sendTo(userPageViews);
- }
-}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/RemoteTableJoinExample.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/RemoteTableJoinExample.java b/src/main/java/samza/examples/cookbook/RemoteTableJoinExample.java
new file mode 100644
index 0000000..386cdda
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/RemoteTableJoinExample.java
@@ -0,0 +1,200 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+
+import java.io.Serializable;
+import java.net.URL;
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.CompletableFuture;
+import org.apache.samza.SamzaException;
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.functions.StreamTableJoinFunction;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+import org.apache.samza.table.Table;
+import org.apache.samza.table.caching.CachingTableDescriptor;
+import org.apache.samza.table.remote.RemoteTableDescriptor;
+import org.apache.samza.table.remote.TableReadFunction;
+import org.apache.samza.util.ExponentialSleepStrategy;
+import org.apache.samza.util.HttpUtil;
+import org.codehaus.jackson.JsonFactory;
+import org.codehaus.jackson.JsonParser;
+import org.codehaus.jackson.JsonToken;
+import org.codehaus.jackson.annotate.JsonProperty;
+
+/**
+ * In this example, we join a stream of stock symbols with a remote table backed by a RESTful service,
+ * which delivers latest stock quotes. The join results contain stock symbol and latest price, and are
+ * delivered to an output stream.
+ *
+ * A rate limit of 10 requests/second is set of the entire job, internally Samza uses an embedded
+ * rate limiter, which evenly distributes the total rate limit among tasks.
+ *
+ * A caching table is used over the remote table with a read TTL of 5 seconds, therefore one would
+ * receive the same quote with this time span.
+ *
+ * <p> Concepts covered: remote table, rate limiter, caching table, stream to table joins.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Create Kafka topics "stock-symbol-input", "stock-price-output" are created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic stock-symbol-input --partitions 2 --replication-factor 1
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic stock-price-output --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/remote-table-join-example.properties
+ * </li>
+ * <li>
+ * Consume messages from the output topic <br/>
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic stock-price-output
+ * </li>
+ * <li>
+ * Produce some messages to the input topic <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic stock-symbol-input --broker-list localhost:9092
+ *
+ * After the console producer is started, type
+ * MSFT
+ *
+ * You should see messages like below from the console consumer window
+ * {"symbol":"MSFT","close":107.64}
+ *
+ * Note: you will need a free API key for symbols other than MSFT, see below for more information.
+ * </li>
+ * </ol>
+ *
+ */
+public class RemoteTableJoinExample implements StreamApplication {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ /**
+ * Default API key "demo" only works for symbol "MSFT"; however you can get an
+ * API key for free at https://www.alphavantage.co/, which will work for other symbols.
+ */
+ private static final String API_KEY = "demo";
+
+ private static final String URL_TEMPLATE =
+ "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=%s&apikey=" + API_KEY;
+
+ private static final String INPUT_STREAM_ID = "stock-symbol-input";
+ private static final String OUTPUT_STREAM_ID = "stock-price-output";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KafkaInputDescriptor<String> stockSymbolInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, new StringSerde());
+ KafkaOutputDescriptor<StockPrice> stockPriceOutputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, new JsonSerdeV2<>(StockPrice.class));
+ MessageStream<String> stockSymbolStream = appDescriptor.getInputStream(stockSymbolInputDescriptor);
+ OutputStream<StockPrice> stockPriceStream = appDescriptor.getOutputStream(stockPriceOutputDescriptor);
+
+ RemoteTableDescriptor<String, Double> remoteTableDescriptor =
+ new RemoteTableDescriptor("remote-table")
+ .withReadRateLimit(10)
+ .withReadFunction(new StockPriceReadFunction());
+ CachingTableDescriptor<String, Double> cachedRemoteTableDescriptor =
+ new CachingTableDescriptor<String, Double>("cached-remote-table")
+ .withTable(remoteTableDescriptor)
+ .withReadTtl(Duration.ofSeconds(5));
+ Table<KV<String, Double>> cachedRemoteTable = appDescriptor.getTable(cachedRemoteTableDescriptor);
+
+ stockSymbolStream
+ .map(symbol -> new KV<String, Void>(symbol, null))
+ .join(cachedRemoteTable, new JoinFn())
+ .sendTo(stockPriceStream);
+
+ }
+
+ static class JoinFn implements StreamTableJoinFunction<String, KV<String, Void>, KV<String, Double>, StockPrice> {
+ @Override
+ public StockPrice apply(KV<String, Void> message, KV<String, Double> record) {
+ return record == null ? null : new StockPrice(message.getKey(), record.getValue());
+ }
+ @Override
+ public String getMessageKey(KV<String, Void> message) {
+ return message.getKey();
+ }
+ @Override
+ public String getRecordKey(KV<String, Double> record) {
+ return record.getKey();
+ }
+ }
+
+ static class StockPriceReadFunction implements TableReadFunction<String, Double> {
+ @Override
+ public CompletableFuture<Double> getAsync(String symbol) {
+ return CompletableFuture.supplyAsync(() -> {
+ try {
+ URL url = new URL(String.format(URL_TEMPLATE, symbol));
+ String response = HttpUtil.read(url, 5000, new ExponentialSleepStrategy());
+ JsonParser parser = new JsonFactory().createJsonParser(response);
+ while (!parser.isClosed()) {
+ if (JsonToken.FIELD_NAME.equals(parser.nextToken()) && "4. close".equalsIgnoreCase(parser.getCurrentName())) {
+ return Double.valueOf(parser.nextTextValue());
+ }
+ }
+ return -1d;
+ } catch (Exception ex) {
+ throw new SamzaException(ex);
+ }
+ });
+ }
+
+ @Override
+ public boolean isRetriable(Throwable throwable) {
+ return false;
+ }
+ }
+
+ static class StockPrice implements Serializable {
+
+ public final String symbol;
+ public final Double close;
+
+ public StockPrice(
+ @JsonProperty("symbol") String symbol,
+ @JsonProperty("close") Double close) {
+ this.symbol = symbol;
+ this.close = close;
+ }
+ }
+
+}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/SessionWindowExample.java
----------------------------------------------------------------------
diff --git a/src/main/java/samza/examples/cookbook/SessionWindowExample.java b/src/main/java/samza/examples/cookbook/SessionWindowExample.java
new file mode 100644
index 0000000..bfdf188
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/SessionWindowExample.java
@@ -0,0 +1,120 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+package samza.examples.cookbook;
+
+import java.io.Serializable;
+import org.apache.samza.application.StreamApplication;
+import org.apache.samza.application.StreamApplicationDescriptor;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.MessageStream;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.windows.Windows;
+import org.apache.samza.serializers.JsonSerdeV2;
+import org.apache.samza.serializers.KVSerde;
+import org.apache.samza.serializers.Serde;
+import org.apache.samza.serializers.StringSerde;
+import org.apache.samza.system.kafka.KafkaInputDescriptor;
+import org.apache.samza.system.kafka.KafkaOutputDescriptor;
+import org.apache.samza.system.kafka.KafkaSystemDescriptor;
+
+import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableMap;
+import samza.examples.cookbook.data.PageView;
+import samza.examples.cookbook.data.UserPageViews;
+
+import java.time.Duration;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * In this example, we group page views by userId into sessions, and compute the number of page views for each user
+ * session. A session is considered closed when there is no user activity for a 10 second duration.
+ *
+ * <p>Concepts covered: Using session windows to group data in a stream, Re-partitioning a stream.
+ *
+ * To run the below example:
+ *
+ * <ol>
+ * <li>
+ * Ensure that the topic "pageview-session-input" is created <br/>
+ * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic pageview-session-input --partitions 2 --replication-factor 1
+ * </li>
+ * <li>
+ * Run the application using the run-app.sh script <br/>
+ * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/session-window-example.properties
+ * </li>
+ * <li>
+ * Produce some messages to the "pageview-session-input" topic <br/>
+ * ./deploy/kafka/bin/kafka-console-producer.sh --topic pageview-session-input --broker-list localhost:9092 <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/home"} <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/search"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/home"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/sports"} <br/>
+ * {"userId": "user1", "country": "india", "pageId":"google.com/news"} <br/>
+ * {"userId": "user2", "country": "china", "pageId":"yahoo.com/fashion"}
+ * </li>
+ * <li>
+ * Consume messages from the "pageview-session-output" topic (e.g. bin/kafka-console-consumer.sh)
+ * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic pageview-session-output --property print.key=true
+ * </li>
+ * </ol>
+ *
+ */
+public class SessionWindowExample implements StreamApplication, Serializable {
+ private static final String KAFKA_SYSTEM_NAME = "kafka";
+ private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
+ private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
+ private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
+
+ private static final String INPUT_STREAM_ID = "pageview-session-input";
+ private static final String OUTPUT_STREAM_ID = "pageview-session-output";
+
+ @Override
+ public void describe(StreamApplicationDescriptor appDescriptor) {
+ Serde<String> stringSerde = new StringSerde();
+ KVSerde<String, PageView> pageViewKVSerde = KVSerde.of(stringSerde, new JsonSerdeV2<>(PageView.class));
+ KVSerde<String, UserPageViews> userPageViewSerde = KVSerde.of(stringSerde, new JsonSerdeV2<>(UserPageViews.class));
+
+ KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
+ .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
+ .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
+ .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
+
+ KafkaInputDescriptor<KV<String, PageView>> pageViewInputDescriptor =
+ kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, pageViewKVSerde);
+ KafkaOutputDescriptor<KV<String, UserPageViews>> userPageViewsOutputDescriptor =
+ kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, userPageViewSerde);
+
+ appDescriptor.withDefaultSystem(kafkaSystemDescriptor);
+
+ MessageStream<KV<String, PageView>> pageViews = appDescriptor.getInputStream(pageViewInputDescriptor);
+ OutputStream<KV<String, UserPageViews>> userPageViews = appDescriptor.getOutputStream(userPageViewsOutputDescriptor);
+
+ pageViews
+ .partitionBy(kv -> kv.value.userId, kv -> kv.value, pageViewKVSerde, "pageview")
+ .window(Windows.keyedSessionWindow(kv -> kv.value.userId,
+ Duration.ofSeconds(10), stringSerde, pageViewKVSerde), "usersession")
+ .map(windowPane -> {
+ String userId = windowPane.getKey().getKey();
+ int views = windowPane.getMessage().size();
+ return KV.of(userId, new UserPageViews(userId, views));
+ })
+ .sendTo(userPageViews);
+ }
+}
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/f9374176/src/main/java/samza/examples/cookbook/StockPriceTableJoiner.java
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diff --git a/src/main/java/samza/examples/cookbook/StockPriceTableJoiner.java b/src/main/java/samza/examples/cookbook/StockPriceTableJoiner.java
deleted file mode 100644
index 3aa951e..0000000
--- a/src/main/java/samza/examples/cookbook/StockPriceTableJoiner.java
+++ /dev/null
@@ -1,200 +0,0 @@
-/*
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-package samza.examples.cookbook;
-
-import com.google.common.collect.ImmutableList;
-import com.google.common.collect.ImmutableMap;
-
-import java.io.Serializable;
-import java.net.URL;
-import java.time.Duration;
-import java.util.List;
-import java.util.Map;
-import java.util.concurrent.CompletableFuture;
-import org.apache.samza.SamzaException;
-import org.apache.samza.application.StreamApplication;
-import org.apache.samza.application.StreamApplicationDescriptor;
-import org.apache.samza.operators.KV;
-import org.apache.samza.operators.MessageStream;
-import org.apache.samza.operators.OutputStream;
-import org.apache.samza.operators.functions.StreamTableJoinFunction;
-import org.apache.samza.serializers.JsonSerdeV2;
-import org.apache.samza.serializers.StringSerde;
-import org.apache.samza.system.kafka.KafkaInputDescriptor;
-import org.apache.samza.system.kafka.KafkaOutputDescriptor;
-import org.apache.samza.system.kafka.KafkaSystemDescriptor;
-import org.apache.samza.table.Table;
-import org.apache.samza.table.caching.CachingTableDescriptor;
-import org.apache.samza.table.remote.RemoteTableDescriptor;
-import org.apache.samza.table.remote.TableReadFunction;
-import org.apache.samza.util.ExponentialSleepStrategy;
-import org.apache.samza.util.HttpUtil;
-import org.codehaus.jackson.JsonFactory;
-import org.codehaus.jackson.JsonParser;
-import org.codehaus.jackson.JsonToken;
-import org.codehaus.jackson.annotate.JsonProperty;
-
-/**
- * In this example, we join a stream of stock symbols with a remote table backed by a RESTful service,
- * which delivers latest stock quotes. The join results contain stock symbol and latest price, and are
- * delivered to an output stream.
- *
- * A rate limit of 10 requests/second is set of the entire job, internally Samza uses an embedded
- * rate limiter, which evenly distributes the total rate limit among tasks.
- *
- * A caching table is used over the remote table with a read TTL of 5 seconds, therefore one would
- * receive the same quote with this time span.
- *
- * <p> Concepts covered: remote table, rate limiter, caching table, stream to table joins.
- *
- * To run the below example:
- *
- * <ol>
- * <li>
- * Create Kafka topics "stock-symbol-input", "stock-price-output" are created <br/>
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic stock-symbol-input --partitions 2 --replication-factor 1
- * ./deploy/kafka/bin/kafka-topics.sh --zookeeper localhost:2181 --create --topic stock-price-output --partitions 2 --replication-factor 1
- * </li>
- * <li>
- * Run the application using the run-app.sh script <br/>
- * ./deploy/samza/bin/run-app.sh --config-factory=org.apache.samza.config.factories.PropertiesConfigFactory --config-path=file://$PWD/deploy/samza/config/stock-price-table-joiner.properties
- * </li>
- * <li>
- * Consume messages from the output topic <br/>
- * ./deploy/kafka/bin/kafka-console-consumer.sh --bootstrap-server localhost:9092 --topic stock-price-output
- * </li>
- * <li>
- * Produce some messages to the input topic <br/>
- * ./deploy/kafka/bin/kafka-console-producer.sh --topic stock-symbol-input --broker-list localhost:9092
- *
- * After the console producer is started, type
- * MSFT
- *
- * You should see messages like below from the console consumer window
- * {"symbol":"MSFT","close":107.64}
- *
- * Note: you will need a free API key for symbols other than MSFT, see below for more information.
- * </li>
- * </ol>
- *
- */
-public class StockPriceTableJoiner implements StreamApplication {
- private static final String KAFKA_SYSTEM_NAME = "kafka";
- private static final List<String> KAFKA_CONSUMER_ZK_CONNECT = ImmutableList.of("localhost:2181");
- private static final List<String> KAFKA_PRODUCER_BOOTSTRAP_SERVERS = ImmutableList.of("localhost:9092");
- private static final Map<String, String> KAFKA_DEFAULT_STREAM_CONFIGS = ImmutableMap.of("replication.factor", "1");
-
- /**
- * Default API key "demo" only works for symbol "MSFT"; however you can get an
- * API key for free at https://www.alphavantage.co/, which will work for other symbols.
- */
- private static final String API_KEY = "demo";
-
- private static final String URL_TEMPLATE =
- "https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=%s&apikey=" + API_KEY;
-
- private static final String INPUT_STREAM_ID = "stock-symbol-input";
- private static final String OUTPUT_STREAM_ID = "stock-price-output";
-
- @Override
- public void describe(StreamApplicationDescriptor appDescriptor) {
- KafkaSystemDescriptor kafkaSystemDescriptor = new KafkaSystemDescriptor(KAFKA_SYSTEM_NAME)
- .withConsumerZkConnect(KAFKA_CONSUMER_ZK_CONNECT)
- .withProducerBootstrapServers(KAFKA_PRODUCER_BOOTSTRAP_SERVERS)
- .withDefaultStreamConfigs(KAFKA_DEFAULT_STREAM_CONFIGS);
-
- KafkaInputDescriptor<String> stockSymbolInputDescriptor =
- kafkaSystemDescriptor.getInputDescriptor(INPUT_STREAM_ID, new StringSerde());
- KafkaOutputDescriptor<StockPrice> stockPriceOutputDescriptor =
- kafkaSystemDescriptor.getOutputDescriptor(OUTPUT_STREAM_ID, new JsonSerdeV2<>(StockPrice.class));
- MessageStream<String> stockSymbolStream = appDescriptor.getInputStream(stockSymbolInputDescriptor);
- OutputStream<StockPrice> stockPriceStream = appDescriptor.getOutputStream(stockPriceOutputDescriptor);
-
- RemoteTableDescriptor<String, Double> remoteTableDescriptor =
- new RemoteTableDescriptor("remote-table")
- .withReadRateLimit(10)
- .withReadFunction(new StockPriceReadFunction());
- CachingTableDescriptor<String, Double> cachedRemoteTableDescriptor =
- new CachingTableDescriptor<String, Double>("cached-remote-table")
- .withTable(remoteTableDescriptor)
- .withReadTtl(Duration.ofSeconds(5));
- Table<KV<String, Double>> cachedRemoteTable = appDescriptor.getTable(cachedRemoteTableDescriptor);
-
- stockSymbolStream
- .map(symbol -> new KV<String, Void>(symbol, null))
- .join(cachedRemoteTable, new JoinFn())
- .sendTo(stockPriceStream);
-
- }
-
- static class JoinFn implements StreamTableJoinFunction<String, KV<String, Void>, KV<String, Double>, StockPrice> {
- @Override
- public StockPrice apply(KV<String, Void> message, KV<String, Double> record) {
- return record == null ? null : new StockPrice(message.getKey(), record.getValue());
- }
- @Override
- public String getMessageKey(KV<String, Void> message) {
- return message.getKey();
- }
- @Override
- public String getRecordKey(KV<String, Double> record) {
- return record.getKey();
- }
- }
-
- static class StockPriceReadFunction implements TableReadFunction<String, Double> {
- @Override
- public CompletableFuture<Double> getAsync(String symbol) {
- return CompletableFuture.supplyAsync(() -> {
- try {
- URL url = new URL(String.format(URL_TEMPLATE, symbol));
- String response = HttpUtil.read(url, 5000, new ExponentialSleepStrategy());
- JsonParser parser = new JsonFactory().createJsonParser(response);
- while (!parser.isClosed()) {
- if (JsonToken.FIELD_NAME.equals(parser.nextToken()) && "4. close".equalsIgnoreCase(parser.getCurrentName())) {
- return Double.valueOf(parser.nextTextValue());
- }
- }
- return -1d;
- } catch (Exception ex) {
- throw new SamzaException(ex);
- }
- });
- }
-
- @Override
- public boolean isRetriable(Throwable throwable) {
- return false;
- }
- }
-
- static class StockPrice implements Serializable {
-
- public final String symbol;
- public final Double close;
-
- public StockPrice(
- @JsonProperty("symbol") String symbol,
- @JsonProperty("close") Double close) {
- this.symbol = symbol;
- this.close = close;
- }
- }
-
-}