QueryCountStatsMonitor can be injected in the Peon (#10092)

* QueryCountStatsMonitor can be injected in the Peon

This change fixes a dependency injection bug where there is a circular
dependency on getting the MonitorScheduler when a user configures the
QueryCountStatsMonitor to be used.

* fix tests

* Actually fix the tests this time

extensions-core/kafka-indexing-service/src/test/java/org/apache/druid/indexing/kafka/KafkaIndexTaskTest.java

@@ -2703,7 +2703,7 @@ public class KafkaIndexTaskTest extends SeekableStreamIndexTaskTestBase
         this::makeTimeseriesAndScanConglomerate,
         Execs.directExecutor(), // queryExecutorService
         NoopJoinableFactory.INSTANCE,
-        EasyMock.createMock(MonitorScheduler.class),
+        () -> EasyMock.createMock(MonitorScheduler.class),
         new SegmentLoaderFactory(null, testUtils.getTestObjectMapper()),
         testUtils.getTestObjectMapper(),
         testUtils.getTestIndexIO(),

extensions-core/kinesis-indexing-service/src/test/java/org/apache/druid/indexing/kinesis/KinesisIndexTaskTest.java

@@ -2963,7 +2963,7 @@ public class KinesisIndexTaskTest extends SeekableStreamIndexTaskTestBase
         this::makeTimeseriesOnlyConglomerate,
         Execs.directExecutor(), // queryExecutorService
         NoopJoinableFactory.INSTANCE,
-        EasyMock.createMock(MonitorScheduler.class),
+        () -> EasyMock.createMock(MonitorScheduler.class),
         new SegmentLoaderFactory(null, testUtils.getTestObjectMapper()),
         testUtils.getTestObjectMapper(),
         testUtils.getTestIndexIO(),

indexing-service/src/main/java/org/apache/druid/indexing/common/TaskToolbox.java

@@ -39,6 +39,7 @@ import org.apache.druid.indexing.common.actions.TaskActionClient;
 import org.apache.druid.indexing.common.config.TaskConfig;
 import org.apache.druid.indexing.worker.IntermediaryDataManager;
 import org.apache.druid.java.util.emitter.service.ServiceEmitter;
+import org.apache.druid.java.util.metrics.Monitor;
 import org.apache.druid.java.util.metrics.MonitorScheduler;
 import org.apache.druid.query.QueryRunnerFactoryConglomerate;
 import org.apache.druid.segment.IndexIO;
@@ -57,6 +58,7 @@ import org.apache.druid.server.coordination.DataSegmentServerAnnouncer;
 import org.apache.druid.timeline.DataSegment;
 import org.joda.time.Interval;
 
+import javax.annotation.Nullable;
 import java.io.File;
 import java.io.IOException;
 import java.util.Collection;
@@ -86,7 +88,8 @@ public class TaskToolbox
    * because it may be unavailable, e. g. for batch tasks running in Spark or Hadoop.
    */
   private final Provider<QueryRunnerFactoryConglomerate> queryRunnerFactoryConglomerateProvider;
-  private final MonitorScheduler monitorScheduler;
+  @Nullable
+  private final Provider<MonitorScheduler> monitorSchedulerProvider;
   private final ExecutorService queryExecutorService;
   private final JoinableFactory joinableFactory;
   private final SegmentLoader segmentLoader;
@@ -120,7 +123,7 @@ public class TaskToolbox
       Provider<QueryRunnerFactoryConglomerate> queryRunnerFactoryConglomerateProvider,
       ExecutorService queryExecutorService,
       JoinableFactory joinableFactory,
-      MonitorScheduler monitorScheduler,
+      @Nullable Provider<MonitorScheduler> monitorSchedulerProvider,
       SegmentLoader segmentLoader,
       ObjectMapper jsonMapper,
       File taskWorkDir,
@@ -151,7 +154,7 @@ public class TaskToolbox
     this.queryRunnerFactoryConglomerateProvider = queryRunnerFactoryConglomerateProvider;
     this.queryExecutorService = queryExecutorService;
     this.joinableFactory = joinableFactory;
-    this.monitorScheduler = monitorScheduler;
+    this.monitorSchedulerProvider = monitorSchedulerProvider;
     this.segmentLoader = segmentLoader;
     this.jsonMapper = jsonMapper;
     this.taskWorkDir = taskWorkDir;
@@ -239,9 +242,34 @@ public class TaskToolbox
     return joinableFactory;
   }
 
+  @Nullable
   public MonitorScheduler getMonitorScheduler()
   {
-    return monitorScheduler;
+    return monitorSchedulerProvider == null ? null : monitorSchedulerProvider.get();
+  }
+
+  /**
+   * Adds a monitor to the monitorScheduler if it is configured
+   * @param monitor
+   */
+  public void addMonitor(Monitor monitor)
+  {
+    MonitorScheduler scheduler = getMonitorScheduler();
+    if (scheduler != null) {
+      scheduler.addMonitor(monitor);
+    }
+  }
+
+  /**
+   * Adds a monitor to the monitorScheduler if it is configured
+   * @param monitor
+   */
+  public void removeMonitor(Monitor monitor)
+  {
+    MonitorScheduler scheduler = getMonitorScheduler();
+    if (scheduler != null) {
+      scheduler.removeMonitor(monitor);
+    }
   }
 
   public ObjectMapper getJsonMapper()

indexing-service/src/main/java/org/apache/druid/indexing/common/TaskToolboxFactory.java

@@ -74,7 +74,7 @@ public class TaskToolboxFactory
   private final Provider<QueryRunnerFactoryConglomerate> queryRunnerFactoryConglomerateProvider;
   private final ExecutorService queryExecutorService;
   private final JoinableFactory joinableFactory;
-  private final MonitorScheduler monitorScheduler;
+  private final Provider<MonitorScheduler> monitorSchedulerProvider;
   private final SegmentLoaderFactory segmentLoaderFactory;
   private final ObjectMapper jsonMapper;
   private final IndexIO indexIO;
@@ -105,7 +105,7 @@ public class TaskToolboxFactory
       Provider<QueryRunnerFactoryConglomerate> queryRunnerFactoryConglomerateProvider,
       @Processing ExecutorService queryExecutorService,
       JoinableFactory joinableFactory,
-      MonitorScheduler monitorScheduler,
+      Provider<MonitorScheduler> monitorSchedulerProvider,
       SegmentLoaderFactory segmentLoaderFactory,
       @Json ObjectMapper jsonMapper,
       IndexIO indexIO,
@@ -135,7 +135,7 @@ public class TaskToolboxFactory
     this.queryRunnerFactoryConglomerateProvider = queryRunnerFactoryConglomerateProvider;
     this.queryExecutorService = queryExecutorService;
     this.joinableFactory = joinableFactory;
-    this.monitorScheduler = monitorScheduler;
+    this.monitorSchedulerProvider = monitorSchedulerProvider;
     this.segmentLoaderFactory = segmentLoaderFactory;
     this.jsonMapper = jsonMapper;
     this.indexIO = Preconditions.checkNotNull(indexIO, "Null IndexIO");
@@ -169,7 +169,7 @@ public class TaskToolboxFactory
         queryRunnerFactoryConglomerateProvider,
         queryExecutorService,
         joinableFactory,
-        monitorScheduler,
+        monitorSchedulerProvider,
         segmentLoaderFactory.manufacturate(taskWorkDir),
         jsonMapper,
         taskWorkDir,

indexing-service/src/main/java/org/apache/druid/indexing/common/task/AppenderatorDriverRealtimeIndexTask.java

@@ -327,7 +327,7 @@ public class AppenderatorDriverRealtimeIndexTask extends AbstractTask implements
       );
 
       // Set up metrics emission
-      toolbox.getMonitorScheduler().addMonitor(metricsMonitor);
+      toolbox.addMonitor(metricsMonitor);
 
       // Delay firehose connection to avoid claiming input resources while the plumber is starting up.
       final FirehoseFactory firehoseFactory = spec.getIOConfig().getFirehoseFactory();
@@ -444,7 +444,7 @@ public class AppenderatorDriverRealtimeIndexTask extends AbstractTask implements
       appenderator.close();
       CloseQuietly.close(driver);
 
-      toolbox.getMonitorScheduler().removeMonitor(metricsMonitor);
+      toolbox.removeMonitor(metricsMonitor);
 
       if (appenderatorsManager.shouldTaskMakeNodeAnnouncements()) {
         toolbox.getDataSegmentServerAnnouncer().unannounce();

indexing-service/src/main/java/org/apache/druid/indexing/common/task/RealtimeIndexTask.java

@@ -378,7 +378,7 @@ public class RealtimeIndexTask extends AbstractTask
       plumber.startJob();
 
       // Set up metrics emission
-      toolbox.getMonitorScheduler().addMonitor(metricsMonitor);
+      toolbox.addMonitor(metricsMonitor);
 
       // Delay firehose connection to avoid claiming input resources while the plumber is starting up.
       final FirehoseFactory firehoseFactory = spec.getIOConfig().getFirehoseFactory();
@@ -473,7 +473,7 @@ public class RealtimeIndexTask extends AbstractTask
           if (firehose != null) {
             CloseQuietly.close(firehose);
           }
-          toolbox.getMonitorScheduler().removeMonitor(metricsMonitor);
+          toolbox.removeMonitor(metricsMonitor);
         }
       }
 

indexing-service/src/main/java/org/apache/druid/indexing/common/task/batch/parallel/PartialSegmentGenerateTask.java

@@ -157,14 +157,12 @@ abstract class PartialSegmentGenerateTask<T extends GeneratedPartitionsReport> e
     final FireDepartmentMetrics fireDepartmentMetrics = fireDepartmentForMetrics.getMetrics();
     final RowIngestionMeters buildSegmentsMeters = new DropwizardRowIngestionMeters();
 
-    if (toolbox.getMonitorScheduler() != null) {
+    toolbox.addMonitor(
-      toolbox.getMonitorScheduler().addMonitor(
         new RealtimeMetricsMonitor(
             Collections.singletonList(fireDepartmentForMetrics),
             Collections.singletonMap(DruidMetrics.TASK_ID, new String[]{getId()})
         )
     );
-    }
 
     final ParallelIndexTuningConfig tuningConfig = ingestionSchema.getTuningConfig();
     final PartitionsSpec partitionsSpec = tuningConfig.getGivenOrDefaultPartitionsSpec();

indexing-service/src/main/java/org/apache/druid/indexing/common/task/batch/parallel/SinglePhaseSubTask.java

@@ -296,14 +296,12 @@ public class SinglePhaseSubTask extends AbstractBatchIndexTask
         new FireDepartment(dataSchema, new RealtimeIOConfig(null, null), null);
     final FireDepartmentMetrics fireDepartmentMetrics = fireDepartmentForMetrics.getMetrics();
 
-    if (toolbox.getMonitorScheduler() != null) {
+    toolbox.addMonitor(
-      toolbox.getMonitorScheduler().addMonitor(
         new RealtimeMetricsMonitor(
             Collections.singletonList(fireDepartmentForMetrics),
             Collections.singletonMap(DruidMetrics.TASK_ID, new String[]{getId()})
         )
     );
-    }
 
     final ParallelIndexTuningConfig tuningConfig = ingestionSchema.getTuningConfig();
     final DynamicPartitionsSpec partitionsSpec = (DynamicPartitionsSpec) tuningConfig.getGivenOrDefaultPartitionsSpec();

indexing-service/src/main/java/org/apache/druid/indexing/seekablestream/SeekableStreamIndexTaskRunner.java

@@ -397,8 +397,7 @@ public abstract class SeekableStreamIndexTaskRunner<PartitionIdType, SequenceOff
         null
     );
     FireDepartmentMetrics fireDepartmentMetrics = fireDepartmentForMetrics.getMetrics();
-    toolbox.getMonitorScheduler()
+    toolbox.addMonitor(TaskRealtimeMetricsMonitorBuilder.build(task, fireDepartmentForMetrics, rowIngestionMeters));
-           .addMonitor(TaskRealtimeMetricsMonitorBuilder.build(task, fireDepartmentForMetrics, rowIngestionMeters));
 
     final String lookupTier = task.getContextValue(RealtimeIndexTask.CTX_KEY_LOOKUP_TIER);
     final LookupNodeService lookupNodeService = lookupTier == null ?

indexing-service/src/test/java/org/apache/druid/indexing/common/TaskToolboxTest.java

@@ -111,7 +111,7 @@ public class TaskToolboxTest
         () -> mockQueryRunnerFactoryConglomerate,
         mockQueryExecutorService,
         NoopJoinableFactory.INSTANCE,
-        mockMonitorScheduler,
+        () -> mockMonitorScheduler,
         mockSegmentLoaderFactory,
         ObjectMapper,
         mockIndexIO,

indexing-service/src/test/java/org/apache/druid/indexing/common/task/AppenderatorDriverRealtimeIndexTaskTest.java

@@ -1594,7 +1594,7 @@ public class AppenderatorDriverRealtimeIndexTaskTest
         () -> conglomerate,
         Execs.directExecutor(), // queryExecutorService
         NoopJoinableFactory.INSTANCE,
-        EasyMock.createMock(MonitorScheduler.class),
+        () -> EasyMock.createMock(MonitorScheduler.class),
         new SegmentLoaderFactory(null, testUtils.getTestObjectMapper()),
         testUtils.getTestObjectMapper(),
         testUtils.getTestIndexIO(),

indexing-service/src/test/java/org/apache/druid/indexing/common/task/RealtimeIndexTaskTest.java

@@ -981,7 +981,7 @@ public class RealtimeIndexTaskTest
         () -> conglomerate,
         Execs.directExecutor(), // queryExecutorService
         NoopJoinableFactory.INSTANCE,
-        EasyMock.createMock(MonitorScheduler.class),
+        () -> EasyMock.createMock(MonitorScheduler.class),
         new SegmentLoaderFactory(null, testUtils.getTestObjectMapper()),
         testUtils.getTestObjectMapper(),
         testUtils.getTestIndexIO(),

indexing-service/src/test/java/org/apache/druid/indexing/overlord/TaskLifecycleTest.java

@@ -665,7 +665,7 @@ public class TaskLifecycleTest
         () -> queryRunnerFactoryConglomerate, // query runner factory conglomerate corporation unionized collective
         Execs.directExecutor(), // query executor service
         NoopJoinableFactory.INSTANCE,
-        monitorScheduler, // monitor scheduler
+        () -> monitorScheduler, // monitor scheduler
         new SegmentLoaderFactory(null, new DefaultObjectMapper()),
         MAPPER,
         INDEX_IO,