https://issues.apache.org/jira/browse/AMQ-4853

Add hashCode and equals override so that this object can be used in
collections properly

activemq-client/src/main/java/org/apache/activemq/command/ConsumerInfo.java

@@ -114,6 +114,7 @@ public class ConsumerInfo extends BaseCommand {
         return subscriptionName != null;
     }
 
+    @Override
     public byte getDataStructureType() {
         return DATA_STRUCTURE_TYPE;
     }
@@ -343,6 +344,7 @@ public class ConsumerInfo extends BaseCommand {
         this.additionalPredicate = additionalPredicate;
     }
 
+    @Override
     public Response visit(CommandVisitor visitor) throws Exception {
         return visitor.processAddConsumer(this);
     }
@@ -434,6 +436,33 @@ public class ConsumerInfo extends BaseCommand {
         return result;
     }
 
+    @Override
+    public int hashCode() {
+        return (consumerId == null) ? 0 : consumerId.hashCode();
+    }
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+
+        ConsumerInfo other = (ConsumerInfo) obj;
+
+        if (consumerId == null && other.consumerId != null) {
+            return false;
+        } else if (!consumerId.equals(other.consumerId)) {
+            return false;
+        }
+        return true;
+    }
+
     /**
      * Tracks the original subscription id that causes a subscription to
      * percolate through a network when networkTTL > 1. Tracking the original