Refactoring NodeStateManager etc. to support forecasting functionality (opensearch-project#965)

* Refactoring NodeStateManager etc. to support forecasting functionality

This commit extends the codebase to support both Anomaly Detection (AD) and forecasting. It contains a mixture of refactoring, renaming, removal of unused code, and package moving tasks. Here are the details:

Refactoring:
- `NodeStateManager.getAnomalyDetector` is now `getConfig`, with added functionality to fetch a Forecaster. The method comments are updated for clarity.
- Existing methods (`getFeatureSamplesForPeriods`, `getColdStartSamplesForPeriods`, `createPreviewSearchRequest`, `getMinDataTime`) have been added in `SearchFeatureDao` to handle forecasting logic.
- Adjusted `SecurityClientUtil` and `ParseUtils` to handle forecasting logic.
- Cleaned up `NodeState` to differentiate state for AD and forecasting.

Renaming:
- `AnomalyDetectorJob` is renamed to `Job` to facilitate reuse for forecasting.
- `NodeStateManager.getAnomalyDetectorJob` is renamed to `getJob`.
- Certain settings in `AnomalyDetectorSettings` are renamed to reflect they are meant for the AD setting. They have been marked as deprecated and new settings are used in `TimeSeriesSettings` instead.
- `IndexAnomalyDetectorJobActionHandler.getAnomalyDetectorJobForWrite` is renamed to `getJobForWrite`.
- `ADSafeSecurityInjector` is renamed to `TimeSeriesSafeSecurityInjector`.

Removing unused code:
- Synchronous code in `ClientUtil`, `IndexUtils`, and `CheckpointDao` is removed.
- The unused class `Throttler` is deleted.
- Mapping file names are changed, and the code referencing these files is adjusted.

Package moving:
- Several classes (`ClientUtil`, `MultiResponsesDelegateActionListener`, `SafeSecurityInjector`, `SecurityUtil`, `ExceptionUtil`, `SearchFeatureDao`, `CleanState`, `ExpiringState`, `MaintenanceState`, `NodeState`, `SingleStreamModelIdMapper`, `BackPressureRouting`) are moved to the respective `org.opensearch.timeseries` packages.

Miscellaneous:
- Fixed compiler failures caused by changes in opensearch-project/OpenSearch#8730 by replacing `DoubleArrayList` with `java.util.ArrayList`.
- Updates the Backwards Compatibility (bwc) version to align with the core's incremented bwc version as per [OpenSearch PR #8670](opensearch-project/OpenSearch#8670). This change prevents the issue described in [OpenSearch Issue #5076](opensearch-project/OpenSearch#5076).

Testing:
- Executed a `gradle build`.
- Added new tests for `ClientUtil` and `NodeStateManager`.

Signed-off-by: Kaituo Li <kaituo@amazon.com>

* improve comment

Signed-off-by: Kaituo Li <kaituo@amazon.com>

* fix compiler error and comments

Signed-off-by: Kaituo Li <kaituo@amazon.com>

---------

Signed-off-by: Kaituo Li <kaituo@amazon.com>

Author: kaituo

build.gradle

@@ -34,7 +34,7 @@ buildscript {
         js_resource_folder = "src/test/resources/job-scheduler"
         common_utils_version = System.getProperty("common_utils.version", opensearch_build)
         job_scheduler_version = System.getProperty("job_scheduler.version", opensearch_build)
-        bwcVersionShort = "2.9.0"
+        bwcVersionShort = "2.10.0"
         bwcVersion = bwcVersionShort + ".0"
         bwcOpenSearchADDownload = 'https://ci.opensearch.org/ci/dbc/distribution-build-opensearch/' + bwcVersionShort + '/latest/linux/x64/tar/builds/' +
                 'opensearch/plugins/opensearch-anomaly-detection-' + bwcVersion + '.zip'
@@ -672,8 +672,6 @@ List<String> jacocoExclusions = [
         'org.opensearch.timeseries.settings.TimeSeriesSettings',
         'org.opensearch.forecast.settings.ForecastSettings',
 
-        'org.opensearch.ad.util.ClientUtil',
-
         'org.opensearch.ad.transport.CronRequest',
         'org.opensearch.ad.AnomalyDetectorRunner',
 

src/main/java/org/opensearch/ad/AnomalyDetectorJobRunner.java

@@ -34,14 +34,12 @@
 import org.opensearch.ad.indices.ADIndexManagement;
 import org.opensearch.ad.model.ADTaskState;
 import org.opensearch.ad.model.AnomalyDetector;
-import org.opensearch.ad.model.AnomalyDetectorJob;
 import org.opensearch.ad.settings.AnomalyDetectorSettings;
 import org.opensearch.ad.task.ADTaskManager;
 import org.opensearch.ad.transport.AnomalyResultAction;
 import org.opensearch.ad.transport.AnomalyResultRequest;
 import org.opensearch.ad.transport.AnomalyResultResponse;
 import org.opensearch.ad.transport.AnomalyResultTransportAction;
-import org.opensearch.ad.util.SecurityUtil;
 import org.opensearch.client.Client;
 import org.opensearch.common.settings.Settings;
 import org.opensearch.common.xcontent.LoggingDeprecationHandler;
@@ -58,11 +56,15 @@
 import org.opensearch.jobscheduler.spi.schedule.IntervalSchedule;
 import org.opensearch.jobscheduler.spi.utils.LockService;
 import org.opensearch.threadpool.ThreadPool;
+import org.opensearch.timeseries.AnalysisType;
+import org.opensearch.timeseries.NodeStateManager;
 import org.opensearch.timeseries.common.exception.EndRunException;
 import org.opensearch.timeseries.common.exception.InternalFailure;
 import org.opensearch.timeseries.common.exception.TimeSeriesException;
 import org.opensearch.timeseries.constant.CommonName;
 import org.opensearch.timeseries.function.ExecutorFunction;
+import org.opensearch.timeseries.model.Job;
+import org.opensearch.timeseries.util.SecurityUtil;
 
 import com.google.common.base.Throwables;
 
@@ -134,12 +136,12 @@ public void runJob(ScheduledJobParameter scheduledJobParameter, JobExecutionCont
         String detectorId = scheduledJobParameter.getName();
         log.info("Start to run AD job {}", detectorId);
         adTaskManager.refreshRealtimeJobRunTime(detectorId);
-        if (!(scheduledJobParameter instanceof AnomalyDetectorJob)) {
+        if (!(scheduledJobParameter instanceof Job)) {
             throw new IllegalArgumentException(
-                "Job parameter is not instance of AnomalyDetectorJob, type: " + scheduledJobParameter.getClass().getCanonicalName()
+                "Job parameter is not instance of Job, type: " + scheduledJobParameter.getClass().getCanonicalName()
             );
         }
-        AnomalyDetectorJob jobParameter = (AnomalyDetectorJob) scheduledJobParameter;
+        Job jobParameter = (Job) scheduledJobParameter;
         Instant executionStartTime = Instant.now();
         IntervalSchedule schedule = (IntervalSchedule) jobParameter.getSchedule();
         Instant detectionStartTime = executionStartTime.minus(schedule.getInterval(), schedule.getUnit());
@@ -148,12 +150,12 @@ public void runJob(ScheduledJobParameter scheduledJobParameter, JobExecutionCont
 
         Runnable runnable = () -> {
             try {
-                nodeStateManager.getAnomalyDetector(detectorId, ActionListener.wrap(detectorOptional -> {
+                nodeStateManager.getConfig(detectorId, AnalysisType.AD, ActionListener.wrap(detectorOptional -> {
                     if (!detectorOptional.isPresent()) {
                         log.error(new ParameterizedMessage("fail to get detector [{}]", detectorId));
                         return;
                     }
-                    AnomalyDetector detector = detectorOptional.get();
+                    AnomalyDetector detector = (AnomalyDetector) detectorOptional.get();
 
                     if (jobParameter.getLockDurationSeconds() != null) {
                         lockService
@@ -216,7 +218,7 @@ public void runJob(ScheduledJobParameter scheduledJobParameter, JobExecutionCont
      * @param detector associated detector accessor
      */
     protected void runAdJob(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -284,7 +286,7 @@ protected void runAdJob(
     }
 
     private void runAnomalyDetectionJob(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -393,7 +395,7 @@ private void runAnomalyDetectionJob(
      * @param detector associated detector accessor
      */
     protected void handleAdException(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -482,7 +484,7 @@ protected void handleAdException(
     }
 
     private void stopAdJobForEndRunException(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -524,9 +526,9 @@ private void stopAdJob(String detectorId, ExecutorFunction function) {
                         .createParser(NamedXContentRegistry.EMPTY, LoggingDeprecationHandler.INSTANCE, response.getSourceAsString())
                 ) {
                     ensureExpectedToken(XContentParser.Token.START_OBJECT, parser.nextToken(), parser);
-                    AnomalyDetectorJob job = AnomalyDetectorJob.parse(parser);
+                    Job job = Job.parse(parser);
                     if (job.isEnabled()) {
-                        AnomalyDetectorJob newJob = new AnomalyDetectorJob(
+                        Job newJob = new Job(
                             job.getName(),
                             job.getSchedule(),
                             job.getWindowDelay(),
@@ -566,7 +568,7 @@ private void stopAdJob(String detectorId, ExecutorFunction function) {
     }
 
     private void indexAnomalyResult(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -590,7 +592,7 @@ private void indexAnomalyResult(
     }
 
     private void indexAnomalyResultException(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -621,7 +623,7 @@ private void indexAnomalyResultException(
     }
 
     private void indexAnomalyResultException(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -646,7 +648,7 @@ private void indexAnomalyResultException(
     }
 
     private void indexAnomalyResultException(
-        AnomalyDetectorJob jobParameter,
+        Job jobParameter,
         LockService lockService,
         LockModel lock,
         Instant detectionStartTime,
@@ -666,7 +668,7 @@ private void indexAnomalyResultException(
         }
     }
 
-    private void releaseLock(AnomalyDetectorJob jobParameter, LockService lockService, LockModel lock) {
+    private void releaseLock(Job jobParameter, LockService lockService, LockModel lock) {
         lockService
             .release(
                 lock,

src/main/java/org/opensearch/ad/AnomalyDetectorProfileRunner.java

@@ -35,7 +35,6 @@
 import org.opensearch.ad.constant.ADCommonName;
 import org.opensearch.ad.model.ADTaskType;
 import org.opensearch.ad.model.AnomalyDetector;
-import org.opensearch.ad.model.AnomalyDetectorJob;
 import org.opensearch.ad.model.DetectorProfile;
 import org.opensearch.ad.model.DetectorProfileName;
 import org.opensearch.ad.model.DetectorState;
@@ -49,9 +48,6 @@
 import org.opensearch.ad.transport.RCFPollingAction;
 import org.opensearch.ad.transport.RCFPollingRequest;
 import org.opensearch.ad.transport.RCFPollingResponse;
-import org.opensearch.ad.util.ExceptionUtil;
-import org.opensearch.ad.util.MultiResponsesDelegateActionListener;
-import org.opensearch.ad.util.SecurityClientUtil;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.common.xcontent.LoggingDeprecationHandler;
@@ -68,11 +64,16 @@
 import org.opensearch.search.aggregations.metrics.CardinalityAggregationBuilder;
 import org.opensearch.search.aggregations.metrics.InternalCardinality;
 import org.opensearch.search.builder.SearchSourceBuilder;
+import org.opensearch.timeseries.AnalysisType;
 import org.opensearch.timeseries.common.exception.NotSerializedExceptionName;
 import org.opensearch.timeseries.common.exception.ResourceNotFoundException;
 import org.opensearch.timeseries.constant.CommonName;
 import org.opensearch.timeseries.model.IntervalTimeConfiguration;
+import org.opensearch.timeseries.model.Job;
 import org.opensearch.timeseries.util.DiscoveryNodeFilterer;
+import org.opensearch.timeseries.util.ExceptionUtil;
+import org.opensearch.timeseries.util.MultiResponsesDelegateActionListener;
+import org.opensearch.timeseries.util.SecurityClientUtil;
 import org.opensearch.transport.TransportService;
 
 public class AnomalyDetectorProfileRunner extends AbstractProfileRunner {
@@ -159,7 +160,7 @@ private void prepareProfile(
                         .createParser(xContentRegistry, LoggingDeprecationHandler.INSTANCE, getResponse.getSourceAsString())
                 ) {
                     ensureExpectedToken(XContentParser.Token.START_OBJECT, parser.nextToken(), parser);
-                    AnomalyDetectorJob job = AnomalyDetectorJob.parse(parser);
+                    Job job = Job.parse(parser);
                     long enabledTimeMs = job.getEnabledTime().toEpochMilli();
 
                     boolean isMultiEntityDetector = detector.isHighCardinality();
@@ -315,6 +316,7 @@ private void profileEntityStats(MultiResponsesDelegateActionListener<DetectorPro
                         client::search,
                         detector.getId(),
                         client,
+                        AnalysisType.AD,
                         searchResponseListener
                     );
             } else {
@@ -368,6 +370,7 @@ private void profileEntityStats(MultiResponsesDelegateActionListener<DetectorPro
                         client::search,
                         detector.getId(),
                         client,
+                        AnalysisType.AD,
                         searchResponseListener
                     );
             }
@@ -418,7 +421,7 @@ private void profileStateRelated(
     private void profileModels(
         AnomalyDetector detector,
         Set<DetectorProfileName> profiles,
-        AnomalyDetectorJob job,
+        Job job,
         boolean forMultiEntityDetector,
         MultiResponsesDelegateActionListener<DetectorProfile> listener
     ) {
@@ -430,7 +433,7 @@ private void profileModels(
     private ActionListener<ProfileResponse> onModelResponse(
         AnomalyDetector detector,
         Set<DetectorProfileName> profilesToCollect,
-        AnomalyDetectorJob job,
+        Job job,
         MultiResponsesDelegateActionListener<DetectorProfile> listener
     ) {
         boolean isMultientityDetector = detector.isHighCardinality();
@@ -464,7 +467,7 @@ private ActionListener<ProfileResponse> onModelResponse(
     }
 
     private void profileMultiEntityDetectorStateRelated(
-        AnomalyDetectorJob job,
+        Job job,
         Set<DetectorProfileName> profilesToCollect,
         ProfileResponse profileResponse,
         DetectorProfile.Builder profileBuilder,

src/main/java/org/opensearch/ad/AnomalyDetectorRunner.java

@@ -33,11 +33,11 @@
 import org.opensearch.ad.model.AnomalyDetector;
 import org.opensearch.ad.model.AnomalyResult;
 import org.opensearch.ad.model.EntityAnomalyResult;
-import org.opensearch.ad.util.MultiResponsesDelegateActionListener;
 import org.opensearch.common.util.concurrent.ThreadContext;
 import org.opensearch.timeseries.model.Entity;
 import org.opensearch.timeseries.model.Feature;
 import org.opensearch.timeseries.model.FeatureData;
+import org.opensearch.timeseries.util.MultiResponsesDelegateActionListener;
 
 /**
  * Runner to trigger an anomaly detector.

src/main/java/org/opensearch/ad/EntityProfileRunner.java

@@ -28,7 +28,6 @@
 import org.opensearch.ad.constant.ADCommonMessages;
 import org.opensearch.ad.constant.ADCommonName;
 import org.opensearch.ad.model.AnomalyDetector;
-import org.opensearch.ad.model.AnomalyDetectorJob;
 import org.opensearch.ad.model.AnomalyResult;
 import org.opensearch.ad.model.EntityProfile;
 import org.opensearch.ad.model.EntityProfileName;
@@ -38,8 +37,6 @@
 import org.opensearch.ad.transport.EntityProfileAction;
 import org.opensearch.ad.transport.EntityProfileRequest;
 import org.opensearch.ad.transport.EntityProfileResponse;
-import org.opensearch.ad.util.MultiResponsesDelegateActionListener;
-import org.opensearch.ad.util.SecurityClientUtil;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.routing.Preference;
 import org.opensearch.common.xcontent.LoggingDeprecationHandler;
@@ -53,11 +50,15 @@
 import org.opensearch.index.query.TermQueryBuilder;
 import org.opensearch.search.aggregations.AggregationBuilders;
 import org.opensearch.search.builder.SearchSourceBuilder;
+import org.opensearch.timeseries.AnalysisType;
 import org.opensearch.timeseries.constant.CommonMessages;
 import org.opensearch.timeseries.constant.CommonName;
 import org.opensearch.timeseries.model.Entity;
 import org.opensearch.timeseries.model.IntervalTimeConfiguration;
+import org.opensearch.timeseries.model.Job;
+import org.opensearch.timeseries.util.MultiResponsesDelegateActionListener;
 import org.opensearch.timeseries.util.ParseUtils;
+import org.opensearch.timeseries.util.SecurityClientUtil;
 
 public class EntityProfileRunner extends AbstractProfileRunner {
     private final Logger logger = LogManager.getLogger(EntityProfileRunner.class);
@@ -188,6 +189,7 @@ private void validateEntity(
                 client::search,
                 detector.getId(),
                 client,
+                AnalysisType.AD,
                 searchResponseListener
             );
 
@@ -228,7 +230,7 @@ private void getJob(
                         .createParser(xContentRegistry, LoggingDeprecationHandler.INSTANCE, getResponse.getSourceAsString())
                 ) {
                     ensureExpectedToken(XContentParser.Token.START_OBJECT, parser.nextToken(), parser);
-                    AnomalyDetectorJob job = AnomalyDetectorJob.parse(parser);
+                    Job job = Job.parse(parser);
 
                     int totalResponsesToWait = 0;
                     if (profilesToCollect.contains(EntityProfileName.INIT_PROGRESS)
@@ -331,7 +333,7 @@ private void profileStateRelated(
         Entity entityValue,
         Set<EntityProfileName> profilesToCollect,
         AnomalyDetector detector,
-        AnomalyDetectorJob job,
+        Job job,
         MultiResponsesDelegateActionListener<EntityProfile> delegateListener
     ) {
         if (totalUpdates == 0) {

src/main/java/org/opensearch/ad/ExecuteADResultResponseRecorder.java

@@ -38,20 +38,22 @@
 import org.opensearch.ad.transport.RCFPollingAction;
 import org.opensearch.ad.transport.RCFPollingRequest;
 import org.opensearch.ad.transport.handler.AnomalyIndexHandler;
-import org.opensearch.ad.util.ExceptionUtil;
 import org.opensearch.client.Client;
 import org.opensearch.cluster.node.DiscoveryNode;
 import org.opensearch.common.unit.TimeValue;
 import org.opensearch.commons.authuser.User;
 import org.opensearch.search.SearchHits;
 import org.opensearch.threadpool.ThreadPool;
+import org.opensearch.timeseries.AnalysisType;
+import org.opensearch.timeseries.NodeStateManager;
 import org.opensearch.timeseries.TimeSeriesAnalyticsPlugin;
 import org.opensearch.timeseries.common.exception.EndRunException;
 import org.opensearch.timeseries.common.exception.ResourceNotFoundException;
 import org.opensearch.timeseries.common.exception.TimeSeriesException;
 import org.opensearch.timeseries.model.FeatureData;
 import org.opensearch.timeseries.model.IntervalTimeConfiguration;
 import org.opensearch.timeseries.util.DiscoveryNodeFilterer;
+import org.opensearch.timeseries.util.ExceptionUtil;
 
 public class ExecuteADResultResponseRecorder {
     private static final Logger log = LogManager.getLogger(ExecuteADResultResponseRecorder.class);
@@ -337,20 +339,20 @@ private void confirmTotalRCFUpdatesFound(
         String error,
         ActionListener<Long> listener
     ) {
-        nodeStateManager.getAnomalyDetector(detectorId, ActionListener.wrap(detectorOptional -> {
+        nodeStateManager.getConfig(detectorId, AnalysisType.AD, ActionListener.wrap(detectorOptional -> {
             if (!detectorOptional.isPresent()) {
                 listener.onFailure(new TimeSeriesException(detectorId, "fail to get detector"));
                 return;
             }
-            nodeStateManager.getAnomalyDetectorJob(detectorId, ActionListener.wrap(jobOptional -> {
+            nodeStateManager.getJob(detectorId, ActionListener.wrap(jobOptional -> {
                 if (!jobOptional.isPresent()) {
                     listener.onFailure(new TimeSeriesException(detectorId, "fail to get job"));
                     return;
                 }
 
                 ProfileUtil
                     .confirmDetectorRealtimeInitStatus(
-                        detectorOptional.get(),
+                        (AnomalyDetector) detectorOptional.get(),
                         jobOptional.get().getEnabledTime().toEpochMilli(),
                         client,
                         ActionListener.wrap(searchResponse -> {

src/main/java/org/opensearch/ad/caching/CacheBuffer.java

@@ -25,7 +25,6 @@
 import org.apache.commons.lang.builder.HashCodeBuilder;
 import org.apache.logging.log4j.LogManager;
 import org.apache.logging.log4j.Logger;
-import org.opensearch.ad.ExpiringState;
 import org.opensearch.ad.MemoryTracker;
 import org.opensearch.ad.MemoryTracker.Origin;
 import org.opensearch.ad.ml.EntityModel;
@@ -36,6 +35,7 @@
 import org.opensearch.ad.ratelimit.CheckpointWriteWorker;
 import org.opensearch.ad.ratelimit.RequestPriority;
 import org.opensearch.ad.util.DateUtils;
+import org.opensearch.timeseries.ExpiringState;
 
 /**
  * We use a layered cache to manage active entities’ states.  We have a two-level