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Posted to commits@samza.apache.org by xi...@apache.org on 2018/01/09 01:26:12 UTC
[31/33] samza-hello-samza git commit: Added stream-table join sample
to cookbook
Added stream-table join sample to cookbook
As per subject, it's a demo of stream-to-table join using RocksDb.
Author: Wei Song <ws...@linkedin.com>
Reviewers: Prateek Maheshwari <pm...@apache.org>
Closes #31 from weisong44/latest
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/befe934c
Tree: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/tree/befe934c
Diff: http://git-wip-us.apache.org/repos/asf/samza-hello-samza/diff/befe934c
Branch: refs/heads/master
Commit: befe934c4ad9ba1664daa7a21c9574a52e0c5542
Parents: cb43653
Author: Wei Song <ws...@linkedin.com>
Authored: Mon Dec 18 16:11:20 2017 -0800
Committer: Prateek Maheshwari <pm...@linkedin.com>
Committed: Mon Dec 18 16:11:20 2017 -0800
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.../pageview-profile-table-joiner.properties | 35 +++++
.../cookbook/PageViewProfileTableJoiner.java | 132 +++++++++++++++++++
.../samza/examples/cookbook/data/Profile.java | 42 ++++++
3 files changed, 209 insertions(+)
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http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/befe934c/src/main/config/pageview-profile-table-joiner.properties
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diff --git a/src/main/config/pageview-profile-table-joiner.properties b/src/main/config/pageview-profile-table-joiner.properties
new file mode 100644
index 0000000..7cec601
--- /dev/null
+++ b/src/main/config/pageview-profile-table-joiner.properties
@@ -0,0 +1,35 @@
+# 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
+job.default.system=kafka
+job.coordinator.system=kafka
+
+# YARN
+yarn.package.path=file://${basedir}/target/${project.artifactId}-${pom.version}-dist.tar.gz
+
+# Task
+app.class=samza.examples.cookbook.PageViewProfileTableJoiner
+
+# Kafka System
+systems.kafka.samza.factory=org.apache.samza.system.kafka.KafkaSystemFactory
+systems.kafka.consumer.zookeeper.connect=localhost:2181
+systems.kafka.producer.bootstrap.servers=localhost:9092
+systems.kafka.default.stream.replication.factor=1
\ No newline at end of file
http://git-wip-us.apache.org/repos/asf/samza-hello-samza/blob/befe934c/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
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diff --git a/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java b/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
new file mode 100644
index 0000000..86deb61
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/PageViewProfileTableJoiner.java
@@ -0,0 +1,132 @@
+/*
+ * 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.config.Config;
+import org.apache.samza.operators.KV;
+import org.apache.samza.operators.OutputStream;
+import org.apache.samza.operators.StreamGraph;
+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.table.Table;
+
+import samza.examples.cookbook.data.PageView;
+import samza.examples.cookbook.data.Profile;
+
+/**
+ * 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 PROFILE_TOPIC = "profile-table-input";
+ private static final String PAGEVIEW_TOPIC = "pageview-join-input";
+ private static final String OUTPUT_TOPIC = "enriched-pageview-join-output";
+
+ @Override
+ public void init(StreamGraph graph, Config config) {
+
+ Serde<Profile> profileSerde = new JsonSerdeV2<>(Profile.class);
+ Serde<PageView> pageViewSerde = new JsonSerdeV2<>(PageView.class);
+
+ OutputStream<EnrichedPageView> joinResultStream = graph.getOutputStream(
+ OUTPUT_TOPIC, new JsonSerdeV2<>(EnrichedPageView.class));
+
+ Table profileTable = graph.getTable(new RocksDbTableDescriptor<String, Profile>("profile-table")
+ .withSerde(KVSerde.of(new StringSerde(), profileSerde)));
+
+ graph.getInputStream(PROFILE_TOPIC, profileSerde)
+ .map(profile -> KV.of(profile.userId, profile))
+ .sendTo(profileTable);
+
+ graph.getInputStream(PAGEVIEW_TOPIC, pageViewSerde)
+ .partitionBy(pv -> pv.userId, pv -> pv, new KVSerde(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/befe934c/src/main/java/samza/examples/cookbook/data/Profile.java
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diff --git a/src/main/java/samza/examples/cookbook/data/Profile.java b/src/main/java/samza/examples/cookbook/data/Profile.java
new file mode 100644
index 0000000..87706fd
--- /dev/null
+++ b/src/main/java/samza/examples/cookbook/data/Profile.java
@@ -0,0 +1,42 @@
+/*
+ * 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.data;
+
+import org.codehaus.jackson.annotate.JsonProperty;
+
+
+public class Profile {
+
+ public final String userId;
+ public final String company;
+
+ /**
+ * Constructs a user profile.
+ *
+ * @param userId the user Id
+ * @param company company to which the user belong to
+ */
+ public Profile(
+ @JsonProperty("userId") String userId,
+ @JsonProperty("company") String company) {
+ this.userId = userId;
+ this.company = company;
+ }
+
+}