[Backport 0.6] Add metrics for query types

flint-core/src/main/java/org/opensearch/flint/core/metrics/MetricConstants.java

@@ -140,6 +140,17 @@ public final class MetricConstants {
      */
     public static final String QUERY_EXECUTION_TIME_METRIC = "query.execution.processingTime";
 
+    /**
+     * Metric for query count of each query type (DROP/VACUUM/ALTER/REFRESH/CREATE INDEX)
+     */
+    public static final String QUERY_DROP_COUNT_METRIC = "query.drop.count";
+    public static final String QUERY_VACUUM_COUNT_METRIC = "query.vacuum.count";
+    public static final String QUERY_ALTER_COUNT_METRIC = "query.alter.count";
+    public static final String QUERY_REFRESH_COUNT_METRIC = "query.refresh.count";
+    public static final String QUERY_CREATE_INDEX_COUNT_METRIC = "query.createIndex.count";
+    public static final String QUERY_CREATE_INDEX_AUTO_REFRESH_COUNT_METRIC = "query.createIndex.autoRefresh.count";
+    public static final String QUERY_CREATE_INDEX_MANUAL_REFRESH_COUNT_METRIC = "query.createIndex.manualRefresh.count";
+
     /**
      * Metric for tracking the total bytes read from input
      */

flint-spark-integration/src/main/scala/org/opensearch/flint/spark/sql/IndexMetricHelper.scala

@@ -0,0 +1,35 @@
+/*
+ * Copyright OpenSearch Contributors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package org.opensearch.flint.spark.sql
+
+import org.opensearch.flint.core.metrics.{MetricConstants, MetricsUtil}
+
+trait IndexMetricHelper {
+  def emitCreateIndexMetric(autoRefresh: Boolean): Unit = {
+    MetricsUtil.incrementCounter(MetricConstants.QUERY_CREATE_INDEX_COUNT_METRIC)
+    if (autoRefresh) {
+      MetricsUtil.incrementCounter(MetricConstants.QUERY_CREATE_INDEX_AUTO_REFRESH_COUNT_METRIC)
+    } else {
+      MetricsUtil.incrementCounter(MetricConstants.QUERY_CREATE_INDEX_MANUAL_REFRESH_COUNT_METRIC)
+    }
+  }
+
+  def emitRefreshIndexMetric(): Unit = {
+    MetricsUtil.incrementCounter(MetricConstants.QUERY_REFRESH_COUNT_METRIC)
+  }
+
+  def emitAlterIndexMetric(): Unit = {
+    MetricsUtil.incrementCounter(MetricConstants.QUERY_ALTER_COUNT_METRIC)
+  }
+
+  def emitDropIndexMetric(): Unit = {
+    MetricsUtil.incrementCounter(MetricConstants.QUERY_DROP_COUNT_METRIC)
+  }
+
+  def emitVacuumIndexMetric(): Unit = {
+    MetricsUtil.incrementCounter(MetricConstants.QUERY_VACUUM_COUNT_METRIC)
+  }
+}

flint-spark-integration/src/main/scala/org/opensearch/flint/spark/sql/covering/FlintSparkCoveringIndexAstBuilder.scala

@@ -6,9 +6,10 @@
 package org.opensearch.flint.spark.sql.covering
 
 import org.antlr.v4.runtime.tree.RuleNode
+import org.opensearch.flint.core.metrics.{MetricConstants, MetricsUtil}
 import org.opensearch.flint.spark.FlintSpark
 import org.opensearch.flint.spark.covering.FlintSparkCoveringIndex
-import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, SparkSqlAstBuilder}
+import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, IndexMetricHelper, SparkSqlAstBuilder}
 import org.opensearch.flint.spark.sql.FlintSparkSqlAstBuilder.{getFullTableName, getSqlText}
 import org.opensearch.flint.spark.sql.FlintSparkSqlExtensionsParser._
 
@@ -20,7 +21,9 @@ import org.apache.spark.sql.types.StringType
 /**
  * Flint Spark AST builder that builds Spark command for Flint covering index statement.
  */
-trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[AnyRef] {
+trait FlintSparkCoveringIndexAstBuilder
+    extends FlintSparkSqlExtensionsVisitor[AnyRef]
+    with IndexMetricHelper {
   self: SparkSqlAstBuilder =>
 
   override def visitCreateCoveringIndexStatement(
@@ -49,6 +52,8 @@ trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
         .options(indexOptions, indexName)
         .create(ignoreIfExists)
 
+      emitCreateIndexMetric(indexOptions.autoRefresh())
+
       // Trigger auto refresh if enabled and not using external scheduler
       if (indexOptions
           .autoRefresh() && !indexBuilder.isExternalSchedulerEnabled()) {
@@ -62,6 +67,7 @@ trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitRefreshCoveringIndexStatement(
       ctx: RefreshCoveringIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      MetricsUtil.incrementCounter(MetricConstants.QUERY_REFRESH_COUNT_METRIC)
       val flintIndexName = getFlintIndexName(flint, ctx.indexName, ctx.tableName)
       flint.refreshIndex(flintIndexName)
       Seq.empty
@@ -107,6 +113,7 @@ trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitAlterCoveringIndexStatement(
       ctx: AlterCoveringIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitAlterIndexMetric()
       val indexName = getFlintIndexName(flint, ctx.indexName, ctx.tableName)
       val indexOptions = visitPropertyList(ctx.propertyList())
       val index = flint
@@ -121,6 +128,7 @@ trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitDropCoveringIndexStatement(
       ctx: DropCoveringIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitDropIndexMetric()
       val flintIndexName = getFlintIndexName(flint, ctx.indexName, ctx.tableName)
       flint.deleteIndex(flintIndexName)
       Seq.empty
@@ -130,6 +138,7 @@ trait FlintSparkCoveringIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitVacuumCoveringIndexStatement(
       ctx: VacuumCoveringIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitVacuumIndexMetric()
       val flintIndexName = getFlintIndexName(flint, ctx.indexName, ctx.tableName)
       flint.vacuumIndex(flintIndexName)
       Seq.empty

flint-spark-integration/src/main/scala/org/opensearch/flint/spark/sql/mv/FlintSparkMaterializedViewAstBuilder.scala

@@ -10,7 +10,7 @@ import scala.collection.convert.ImplicitConversions.`collection AsScalaIterable`
 import org.antlr.v4.runtime.tree.RuleNode
 import org.opensearch.flint.spark.FlintSpark
 import org.opensearch.flint.spark.mv.FlintSparkMaterializedView
-import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, SparkSqlAstBuilder}
+import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, IndexMetricHelper, SparkSqlAstBuilder}
 import org.opensearch.flint.spark.sql.FlintSparkSqlAstBuilder.{getFullTableName, getSqlText, IndexBelongsTo}
 import org.opensearch.flint.spark.sql.FlintSparkSqlExtensionsParser._
 
@@ -22,7 +22,9 @@ import org.apache.spark.sql.types.StringType
 /**
  * Flint Spark AST builder that builds Spark command for Flint materialized view statement.
  */
-trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisitor[AnyRef] {
+trait FlintSparkMaterializedViewAstBuilder
+    extends FlintSparkSqlExtensionsVisitor[AnyRef]
+    with IndexMetricHelper {
   self: SparkSqlAstBuilder =>
 
   override def visitCreateMaterializedViewStatement(
@@ -40,6 +42,8 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
       val indexOptions = visitPropertyList(ctx.propertyList())
       val flintIndexName = getFlintIndexName(flint, ctx.mvName)
 
+      emitCreateIndexMetric(indexOptions.autoRefresh())
+
       mvBuilder
         .options(indexOptions, flintIndexName)
         .create(ignoreIfExists)
@@ -56,6 +60,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   override def visitRefreshMaterializedViewStatement(
       ctx: RefreshMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitRefreshIndexMetric()
       val flintIndexName = getFlintIndexName(flint, ctx.mvName)
       flint.refreshIndex(flintIndexName)
       Seq.empty
@@ -106,6 +111,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   override def visitAlterMaterializedViewStatement(
       ctx: AlterMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitAlterIndexMetric()
       val indexName = getFlintIndexName(flint, ctx.mvName)
       val indexOptions = visitPropertyList(ctx.propertyList())
       val index = flint
@@ -120,6 +126,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   override def visitDropMaterializedViewStatement(
       ctx: DropMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitDropIndexMetric()
       flint.deleteIndex(getFlintIndexName(flint, ctx.mvName))
       Seq.empty
     }
@@ -128,6 +135,7 @@ trait FlintSparkMaterializedViewAstBuilder extends FlintSparkSqlExtensionsVisito
   override def visitVacuumMaterializedViewStatement(
       ctx: VacuumMaterializedViewStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitVacuumIndexMetric()
       flint.vacuumIndex(getFlintIndexName(flint, ctx.mvName))
       Seq.empty
     }

flint-spark-integration/src/main/scala/org/opensearch/flint/spark/sql/skipping/FlintSparkSkippingIndexAstBuilder.scala

@@ -14,7 +14,7 @@ import org.opensearch.flint.spark.skipping.FlintSparkSkippingIndex
 import org.opensearch.flint.spark.skipping.FlintSparkSkippingStrategy.SkippingKind
 import org.opensearch.flint.spark.skipping.FlintSparkSkippingStrategy.SkippingKind.{BLOOM_FILTER, MIN_MAX, PARTITION, VALUE_SET}
 import org.opensearch.flint.spark.skipping.valueset.ValueSetSkippingStrategy.VALUE_SET_MAX_SIZE_KEY
-import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, SparkSqlAstBuilder}
+import org.opensearch.flint.spark.sql.{FlintSparkSqlCommand, FlintSparkSqlExtensionsVisitor, IndexMetricHelper, SparkSqlAstBuilder}
 import org.opensearch.flint.spark.sql.FlintSparkSqlAstBuilder.{getFullTableName, getSqlText}
 import org.opensearch.flint.spark.sql.FlintSparkSqlExtensionsParser._
 
@@ -26,7 +26,9 @@ import org.apache.spark.sql.types.StringType
 /**
  * Flint Spark AST builder that builds Spark command for Flint skipping index statement.
  */
-trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[AnyRef] {
+trait FlintSparkSkippingIndexAstBuilder
+    extends FlintSparkSqlExtensionsVisitor[AnyRef]
+    with IndexMetricHelper {
   self: SparkSqlAstBuilder =>
 
   override def visitCreateSkippingIndexStatement(
@@ -73,6 +75,8 @@ trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
       val indexOptions = visitPropertyList(ctx.propertyList())
       val indexName = getSkippingIndexName(flint, ctx.tableName)
 
+      emitCreateIndexMetric(indexOptions.autoRefresh())
+
       indexBuilder
         .options(indexOptions, indexName)
         .create(ignoreIfExists)
@@ -88,6 +92,7 @@ trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitRefreshSkippingIndexStatement(
       ctx: RefreshSkippingIndexStatementContext): Command =
     FlintSparkSqlCommand() { flint =>
+      emitRefreshIndexMetric()
       val indexName = getSkippingIndexName(flint, ctx.tableName)
       flint.refreshIndex(indexName)
       Seq.empty
@@ -115,6 +120,7 @@ trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitAlterSkippingIndexStatement(
       ctx: AlterSkippingIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitAlterIndexMetric()
       val indexName = getSkippingIndexName(flint, ctx.tableName)
       val indexOptions = visitPropertyList(ctx.propertyList())
       val index = flint
@@ -142,6 +148,7 @@ trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
 
   override def visitDropSkippingIndexStatement(ctx: DropSkippingIndexStatementContext): Command =
     FlintSparkSqlCommand() { flint =>
+      emitDropIndexMetric()
       val indexName = getSkippingIndexName(flint, ctx.tableName)
       flint.deleteIndex(indexName)
       Seq.empty
@@ -150,6 +157,7 @@ trait FlintSparkSkippingIndexAstBuilder extends FlintSparkSqlExtensionsVisitor[A
   override def visitVacuumSkippingIndexStatement(
       ctx: VacuumSkippingIndexStatementContext): Command = {
     FlintSparkSqlCommand() { flint =>
+      emitVacuumIndexMetric()
       val indexName = getSkippingIndexName(flint, ctx.tableName)
       flint.vacuumIndex(indexName)
       Seq.empty