Migrate Beam benchmark implementation

Co-authored-by: Jan Bensien stu128012@mail.uni-kiel.de

This merge request will fix #147 (closed). It is based on the existing implementation in the https://git.se.informatik.uni-kiel.de/stu128012/theodolite/-/tree/beam_current_theodolite fork but has to tackle the following requirements:

• Migrate the individual benchmarks with their new enumeration
  • Migrate UC1
  • Migrate UC2 (f.k.a. UC3)
  • Migrate UC3 (f.k.a. UC4)
  • Migrate UC4 (f.k.a. UC2)
• Migrate to Titan Control Center Commons 0.1.0 (Avro records and Schema Registry are already used)
• Fix code quality issues if any
• Support Docker builds (already available in the base branch)
• Build and push Docker images in CI pipeline
• Update Docker Compose files in docker-test
• Share code among Beam runners (either create subprojects or dedicated Gradle tasks or dedicated Dockerfiles or environment variables or ...)
  • Current approach is to use different subprojects. Other approaches would increase the complexity and is currently not possible because of:
    • https://issues.apache.org/jira/browse/BEAM-9830
    • https://stackoverflow.com/questions/61441333/conflict-with-runner-dependencies-in-beam
    • build beam commons project (for builing configurations, common PT transformations)
    • outsource uc1-4 pipelines into single projects
    • outsource uc1-4 beam samza into single projects
    • outsource uc1-4 beam flink into single projects
• Clean up Gradle build files
  • Build Gradle plugins:
    • Build beam commons plugin
    • Build beam flink plugin
    • Build beam samza plugin
  • Check if same versions of dependecies are used (slf4, etc)
• Provide corresponding Kubernetes benchmark definitions -> Moved to #281 (closed)
• Solve #278 (closed)
• Fix #293 (closed)
• Solve #291 (not part of this MR)
• Make samza configurable through environment variables
• Resolve ./gradlew build --warning-mode all
• @she Image names in Docker Compose files must be replaced when merging and pushing images

Depends on !188 (merged)

theodolite-benchmarks/uc3-beam-flink/src/main/java/application/EventTimePolicy.java

+package application;
+
+
+import java.util.Optional;
+import org.apache.beam.sdk.io.kafka.KafkaRecord;
+import org.apache.beam.sdk.io.kafka.TimestampPolicy;
+import org.apache.beam.sdk.transforms.windowing.BoundedWindow;
+import org.joda.time.Instant;
+
+/**
+ * TimeStampPolicy to use event time based on the timestamp of the record value.
+ */
+public class EventTimePolicy
+    extends TimestampPolicy<String, titan.ccp.model.records.ActivePowerRecord> {
+  protected Instant currentWatermark;
+
+  public EventTimePolicy(final Optional<Instant> previousWatermark) {
+    this.currentWatermark = previousWatermark.orElse(BoundedWindow.TIMESTAMP_MIN_VALUE);
+  }
+
+
+  @Override
+  public Instant getTimestampForRecord(final PartitionContext ctx,
+      final KafkaRecord<String, titan.ccp.model.records.ActivePowerRecord> record) {
+    this.currentWatermark = new Instant(record.getKV().getValue().getTimestamp());
+    return this.currentWatermark;
+  }
+
+  @Override
+  public Instant getWatermark(final PartitionContext ctx) {
+    return this.currentWatermark;
+  }
+
+}