GH-222: Expose KCL gracefulShutdownTimeout

Fixes: #222
Issue link: #222

spring-cloud-stream-binder-kinesis-docs/src/main/asciidoc/overview.adoc

@@ -304,6 +304,11 @@ The KCL idle between requests in polling mode.
 +
 Default: 1500L
 
+gracefulShutdownTimeout::
+The KCL graceful shutdown timeout in milliseconds.
++
+Default: 0 - regular shutdown process
+
 Starting with version `4.0.4` (basically since `spring-integration-aws-3.0.8`), the `KclMessageDrivenChannelAdapter` can be customized programmatically for the `ConfigsBuilder` parts.
 For example, to set a custom value for the `LeaseManagementConfig.maxLeasesForWorker` property, the `ConsumerEndpointCustomizer<KclMessageDrivenChannelAdapter>` bean has to be provided:
 

spring-cloud-stream-binder-kinesis/src/main/java/org/springframework/cloud/stream/binder/kinesis/KinesisMessageChannelBinder.java

@@ -417,6 +417,7 @@ private MessageProducerSupport createKclConsumerEndpoint(ConsumerDestination des
 		adapter.setLeaseTableName(kinesisConsumerProperties.getLeaseTableName());
 		adapter.setPollingMaxRecords(kinesisConsumerProperties.getPollingMaxRecords());
 		adapter.setPollingIdleTime(kinesisConsumerProperties.getPollingIdleTime());
+		adapter.setGracefulShutdownTimeout(kinesisConsumerProperties.getGracefulShutdownTimeout());
 		if (properties.getExtension().isEmbedHeaders()) {
 			adapter.setEmbeddedHeadersMapper(this.embeddedHeadersMapper);
 		}

spring-cloud-stream-binder-kinesis/src/main/java/org/springframework/cloud/stream/binder/kinesis/properties/KinesisConsumerProperties.java

@@ -88,6 +88,11 @@ public class KinesisConsumerProperties {
 	 */
 	private long pollingIdleTime = 1500L;
 
+	/**
+	 * The KCL graceful shutdown timeout in milliseconds.
+	 */
+	private long gracefulShutdownTimeout;
+
 	private boolean embedHeaders;
 
 	/**
@@ -231,4 +236,12 @@ public void setPollingIdleTime(long pollingIdleTime) {
 		this.pollingIdleTime = pollingIdleTime;
 	}
 
+	public long getGracefulShutdownTimeout() {
+		return this.gracefulShutdownTimeout;
+	}
+
+	public void setGracefulShutdownTimeout(long gracefulShutdownTimeout) {
+		this.gracefulShutdownTimeout = gracefulShutdownTimeout;
+	}
+
 }