Create v3

streams-bootstrap/src/main/java/com/bakdata/kafka/StreamsExecutionOptions.java

@@ -24,6 +24,7 @@
 
 package com.bakdata.kafka;
 
+import com.google.common.annotations.VisibleForTesting;
 import java.time.Duration;
 import java.util.function.Consumer;
 import java.util.function.Supplier;
@@ -74,11 +75,16 @@ private static boolean isStaticMembershipDisabled(final StreamsConfig config) {
     }
 
     CloseOptions createCloseOptions(final StreamsConfig config) {
-        final boolean staticMembershipDisabled = isStaticMembershipDisabled(config);
-        final boolean leaveGroup = staticMembershipDisabled || this.volatileGroupInstanceId;
+        final boolean leaveGroup = this.shouldLeaveGroup(config);
         return new CloseOptions().leaveGroup(leaveGroup).timeout(this.closeTimeout);
     }
 
+    @VisibleForTesting
+    boolean shouldLeaveGroup(final StreamsConfig config) {
+        final boolean staticMembershipDisabled = isStaticMembershipDisabled(config);
+        return staticMembershipDisabled || this.volatileGroupInstanceId;
+    }
+
     void onStart(final KafkaStreams streams) {
         this.onStart.accept(streams);
     }

streams-bootstrap/src/test/java/com/bakdata/kafka/StreamsExecutionOptionsTest.java

@@ -0,0 +1,63 @@
+/*
+ * MIT License
+ *
+ * Copyright (c) 2024 bakdata
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+
+package com.bakdata.kafka;
+
+import static java.util.Collections.emptyMap;
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.util.Map;
+import org.apache.kafka.clients.consumer.ConsumerConfig;
+import org.apache.kafka.streams.StreamsConfig;
+import org.junit.jupiter.api.Test;
+
+public class StreamsExecutionOptionsTest {
+
+    @Test
+    void shouldLeaveGroup() {
+        final StreamsExecutionOptions options = StreamsExecutionOptions.builder()
+                .build();
+        assertThat(options.shouldLeaveGroup(new StreamsConfig(emptyMap()))).isTrue();
+    }
+
+    @Test
+    void shouldNotLeaveGroup() {
+        final StreamsExecutionOptions options = StreamsExecutionOptions.builder()
+                .volatileGroupInstanceId(false)
+                .build();
+        assertThat(options.shouldLeaveGroup(new StreamsConfig(Map.of(
+                ConsumerConfig.GROUP_INSTANCE_ID_CONFIG, "foo"
+        )))).isFalse();
+    }
+
+    @Test
+    void shouldLeaveGroupWithVolatileGroupId() {
+        final StreamsExecutionOptions options = StreamsExecutionOptions.builder()
+                .volatileGroupInstanceId(true)
+                .build();
+        assertThat(options.shouldLeaveGroup(new StreamsConfig(Map.of(
+                ConsumerConfig.GROUP_INSTANCE_ID_CONFIG, "foo"
+        )))).isTrue();
+    }
+}