Apply final to public API classes where possible - ibm-mq-metrics (open-telemetry#2214)

Author: trask

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/WmqContext.java

@@ -17,7 +17,7 @@
  * authorization.<br>
  * It also validates the arguments passed for various scenarios.
  */
-public class WmqContext {
+public final class WmqContext {
   private static final String TRANSPORT_TYPE_CLIENT = "Client";
   private static final String TRANSPORT_TYPE_BINDINGS = "Bindings";
 

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/WmqMonitor.java

@@ -43,7 +43,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class WmqMonitor {
+public final class WmqMonitor {
 
   private static final Logger logger = LoggerFactory.getLogger(WmqMonitor.class);
 

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/config/ExcludeFilters.java

@@ -12,7 +12,7 @@
 import java.util.Set;
 
 /** A jackson databind class used for config. */
-public class ExcludeFilters {
+public final class ExcludeFilters {
 
   private String type = "UNKNOWN";
   private Set<String> values = new HashSet<>();

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/config/QueueManager.java

@@ -10,7 +10,7 @@
 
 /** This is a jackson databind class used purely for config. */
 @JsonIgnoreProperties(ignoreUnknown = true)
-public class QueueManager {
+public final class QueueManager {
 
   @Nullable private String host;
   private int port = -1;

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/config/ResourceFilters.java

@@ -8,7 +8,7 @@
 import java.util.HashSet;
 import java.util.Set;
 
-public class ResourceFilters {
+public final class ResourceFilters {
 
   private Set<String> include = new HashSet<>();
   private Set<ExcludeFilters> exclude = new HashSet<>();

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/metricscollector/MessageBuddy.java

@@ -12,7 +12,7 @@
 import com.ibm.mq.headers.pcf.PCFMessage;
 import java.time.Instant;
 
-public class MessageBuddy {
+public final class MessageBuddy {
 
   private MessageBuddy() {}
 

ibm-mq-metrics/src/main/java/io/opentelemetry/ibm/mq/util/WmqUtil.java

@@ -16,7 +16,7 @@
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-public class WmqUtil {
+public final class WmqUtil {
 
   private static final Logger logger = LoggerFactory.getLogger(WmqUtil.class);