Change CassandraTaskExports filtering (#554)

* Change CassandraTaskExports filtering to use String instead of OperationType

* Remove unused import

Author: burmanm

CHANGELOG.md

@@ -10,8 +10,9 @@ Changelog for Management API, new PRs should update the `main / unreleased` sect
 ```
 
 ## unreleased
-* [ENHANCEMENT] [#552](https://github.com/k8ssandra/management-api-for-apache-cassandra/issues/552) Improve "liveness" probe implementation
 * [FEATURE] [#551](https://github.com/k8ssandra/management-api-for-apache-cassandra/issues/551) Add Cassandra 5.0.2 to the build matrix
+* [ENHANCEMENT] [#552](https://github.com/k8ssandra/management-api-for-apache-cassandra/issues/552) Improve "liveness" probe implementation
+* [BUGFIX] [#553](https://github.com/k8ssandra/management-api-for-apache-cassandra/issues/553) Fix CassandraTaskExports metric filtering to make it work with 5.0.x Major compactions
 
 ## v0.1.87 (2024-10-02)
 * [FEATURE] [#535](https://github.com/k8ssandra/management-api-for-apache-cassandra/issues/535) Add Cassandra 5.0.0 to the build matrix

management-api-agent-common/src/main/java/io/k8ssandra/metrics/prometheus/CassandraTasksExports.java

@@ -17,7 +17,6 @@
 import java.util.List;
 import java.util.Map;
 import java.util.stream.Collectors;
-import org.apache.cassandra.db.compaction.OperationType;
 import org.slf4j.LoggerFactory;
 
 /**
@@ -306,12 +305,13 @@ List<MetricFamilySamples> getCompactionStats() {
                   }
 
                   try {
-                    OperationType operationType = OperationType.valueOf(taskType.toUpperCase());
+                    // Can't use OperationType since it differs between 5.0 and 4.1
+                    String operationType = taskType.toUpperCase().replaceAll(" ", "_");
                     // Ignore taskTypes: COUNTER_CACHE_SAVE, KEY_CACHE_SAVE, ROW_CACHE_SAVE (from
                     // Cassandra 4.1)
-                    return operationType != OperationType.COUNTER_CACHE_SAVE
-                        && operationType != OperationType.KEY_CACHE_SAVE
-                        && operationType != OperationType.ROW_CACHE_SAVE;
+                    return operationType != "COUNTER_CACHE_SAVE"
+                        && operationType != "KEY_CACHE_SAVE"
+                        && operationType != "ROW_CACHE_SAVE";
                   } catch (IllegalArgumentException e) {
                     return false;
                   }