diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt b/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt index 0a80f33ae..489a846f9 100644 --- a/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt +++ b/alerting/src/main/kotlin/org/opensearch/alerting/AlertingPlugin.kt @@ -97,6 +97,7 @@ import org.opensearch.core.xcontent.XContentParser import org.opensearch.env.Environment import org.opensearch.env.NodeEnvironment import org.opensearch.index.IndexModule +import org.opensearch.monitor.jvm.JvmStats import org.opensearch.painless.spi.Allowlist import org.opensearch.painless.spi.AllowlistLoader import org.opensearch.painless.spi.PainlessExtension @@ -257,6 +258,7 @@ internal class AlertingPlugin : PainlessExtension, ActionPlugin, ScriptPlugin, R .registerTriggerService(TriggerService(scriptService)) .registerAlertService(AlertService(client, xContentRegistry, alertIndices)) .registerDocLevelMonitorQueries(DocLevelMonitorQueries(client, clusterService)) + .registerJvmStats(JvmStats.jvmStats()) .registerWorkflowService(WorkflowService(client, xContentRegistry)) .registerConsumers() .registerDestinationSettings() @@ -314,6 +316,7 @@ internal class AlertingPlugin : PainlessExtension, ActionPlugin, ScriptPlugin, R AlertingSettings.ALERT_HISTORY_MAX_DOCS, AlertingSettings.ALERT_HISTORY_RETENTION_PERIOD, AlertingSettings.ALERTING_MAX_MONITORS, + AlertingSettings.PERCOLATE_QUERY_DOCS_SIZE_MEMORY_PERCENTAGE_LIMIT, AlertingSettings.REQUEST_TIMEOUT, AlertingSettings.MAX_ACTION_THROTTLE_VALUE, AlertingSettings.FILTER_BY_BACKEND_ROLES, diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/DocumentLevelMonitorRunner.kt b/alerting/src/main/kotlin/org/opensearch/alerting/DocumentLevelMonitorRunner.kt index 3b8e4dee7..e5147a3e6 100644 --- a/alerting/src/main/kotlin/org/opensearch/alerting/DocumentLevelMonitorRunner.kt +++ b/alerting/src/main/kotlin/org/opensearch/alerting/DocumentLevelMonitorRunner.kt @@ -22,6 +22,8 @@ import org.opensearch.alerting.model.MonitorRunResult import org.opensearch.alerting.model.userErrorMessage import org.opensearch.alerting.opensearchapi.suspendUntil import org.opensearch.alerting.script.DocumentLevelTriggerExecutionContext +import org.opensearch.alerting.settings.AlertingSettings.Companion.PERCOLATE_QUERY_DOCS_SIZE_MEMORY_PERCENTAGE_LIMIT +import org.opensearch.alerting.settings.AlertingSettings.Companion.PERCOLATE_QUERY_MAX_NUM_DOCS_IN_MEMORY import org.opensearch.alerting.util.AlertingException import org.opensearch.alerting.util.IndexUtils import org.opensearch.alerting.util.defaultToPerExecutionAction @@ -56,13 +58,17 @@ import org.opensearch.index.IndexNotFoundException import org.opensearch.index.query.BoolQueryBuilder import org.opensearch.index.query.Operator import org.opensearch.index.query.QueryBuilders +import org.opensearch.monitor.jvm.JvmStats import org.opensearch.percolator.PercolateQueryBuilderExt +import org.opensearch.search.SearchHit import org.opensearch.search.SearchHits import org.opensearch.search.builder.SearchSourceBuilder import org.opensearch.search.sort.SortOrder import java.io.IOException import java.time.Instant import java.util.UUID +import java.util.concurrent.atomic.AtomicLong +import java.util.stream.Collectors import kotlin.math.max object DocumentLevelMonitorRunner : MonitorRunner() { @@ -149,7 +155,14 @@ object DocumentLevelMonitorRunner : MonitorRunner() { // Map of document ids per index when monitor is workflow delegate and has chained findings val matchingDocIdsPerIndex = workflowRunContext?.matchingDocIdsPerIndex + /* Contains list of docs source that are held in memory to submit to percolate query against query index. + * Docs are fetched from the source index per shard and transformed.*/ + val transformedDocs = mutableListOf>() + val docsSizeInBytes = AtomicLong(0) + val concreteIndicesSeenSoFar = mutableListOf() + val updatedIndexNames = mutableListOf() docLevelMonitorInput.indices.forEach { indexName -> + var concreteIndices = IndexUtils.resolveAllIndices( listOf(indexName), monitorCtx.clusterService!!, @@ -170,7 +183,9 @@ object DocumentLevelMonitorRunner : MonitorRunner() { ) } } + concreteIndicesSeenSoFar.addAll(concreteIndices) val updatedIndexName = indexName.replace("*", "_") + updatedIndexNames.add(updatedIndexName) val conflictingFields = monitorCtx.docLevelMonitorQueries!!.getAllConflictingFields( monitorCtx.clusterService!!.state(), concreteIndices @@ -219,41 +234,39 @@ object DocumentLevelMonitorRunner : MonitorRunner() { // Prepare DocumentExecutionContext for each index val docExecutionContext = DocumentExecutionContext(queries, indexLastRunContext, indexUpdatedRunContext) - val matchingDocs = getMatchingDocs( + fetchShardDataAndMaybeExecutePercolateQueries( monitor, monitorCtx, docExecutionContext, updatedIndexName, concreteIndexName, conflictingFields.toList(), - matchingDocIdsPerIndex?.get(concreteIndexName) + matchingDocIdsPerIndex?.get(concreteIndexName), + monitorMetadata, + inputRunResults, + docsToQueries, + transformedDocs, + docsSizeInBytes, + updatedIndexNames, + concreteIndicesSeenSoFar ) - - if (matchingDocs.isNotEmpty()) { - val matchedQueriesForDocs = getMatchedQueries( - monitorCtx, - matchingDocs.map { it.second }, - monitor, - monitorMetadata, - updatedIndexName, - concreteIndexName - ) - - matchedQueriesForDocs.forEach { hit -> - val id = hit.id - .replace("_${updatedIndexName}_${monitor.id}", "") - .replace("_${concreteIndexName}_${monitor.id}", "") - - val docIndices = hit.field("_percolator_document_slot").values.map { it.toString().toInt() } - docIndices.forEach { idx -> - val docIndex = "${matchingDocs[idx].first}|$concreteIndexName" - inputRunResults.getOrPut(id) { mutableSetOf() }.add(docIndex) - docsToQueries.getOrPut(docIndex) { mutableListOf() }.add(id) - } - } - } } } + /* if all indices are covered still in-memory docs size limit is not breached we would need to submit + the percolate query at the end */ + if (transformedDocs.isNotEmpty()) { + performPercolateQueryAndResetCounters( + monitorCtx, + transformedDocs, + docsSizeInBytes, + monitor, + monitorMetadata, + updatedIndexNames, + concreteIndicesSeenSoFar, + inputRunResults, + docsToQueries + ) + } monitorResult = monitorResult.copy(inputResults = InputRunResults(listOf(inputRunResults))) /* @@ -584,6 +597,7 @@ object DocumentLevelMonitorRunner : MonitorRunner() { .size(1) ) val response: SearchResponse = client.suspendUntil { client.search(request, it) } + JvmStats.jvmStats() if (response.status() !== RestStatus.OK) { throw IOException("Failed to get max seq no for shard: $shard") } @@ -598,17 +612,28 @@ object DocumentLevelMonitorRunner : MonitorRunner() { return allShards.filter { it.primary() }.size } - private suspend fun getMatchingDocs( + /** 1. Fetch data per shard for given index. (only 10000 docs are fetched. + * needs to be converted to scroll if not performant enough) + * 2. Transform documents to conform to format required for percolate query + * 3a. Check if docs in memory are crossing threshold defined by setting. + * 3b. If yes, perform percolate query and update docToQueries Map with all hits from percolate queries */ + private suspend fun fetchShardDataAndMaybeExecutePercolateQueries( monitor: Monitor, monitorCtx: MonitorRunnerExecutionContext, docExecutionCtx: DocumentExecutionContext, - index: String, - concreteIndex: String, + indexName: String, + concreteIndexName: String, conflictingFields: List, - docIds: List? = null - ): List> { + docIds: List? = null, + monitorMetadata: MonitorMetadata, + inputRunResults: MutableMap>, + docsToQueries: MutableMap>, + transformedDocs: MutableList>, + docsSizeInBytes: AtomicLong, + monitorInputIndices: List, + concreteIndices: List, + ) { val count: Int = docExecutionCtx.updatedLastRunContext["shards_count"] as Int - val matchingDocs = mutableListOf>() for (i: Int in 0 until count) { val shard = i.toString() try { @@ -617,24 +642,99 @@ object DocumentLevelMonitorRunner : MonitorRunner() { val hits: SearchHits = searchShard( monitorCtx, - concreteIndex, + concreteIndexName, shard, prevSeqNo, maxSeqNo, null, docIds ) + transformedDocs.addAll( + transformSearchHitsAndReconstructDocs( + hits, + indexName, + concreteIndexName, + monitor.id, + conflictingFields, + docsSizeInBytes + ) + ) + } catch (e: Exception) { + logger.error( + "Monitor ${monitor.id} :" + + " Failed to run fetch data from shard [$shard] of index [$concreteIndexName]. Error: ${e.message}", + e + ) + } + if ( + transformedDocs.isNotEmpty() && + shouldPerformPercolateQueryAndFlushInMemoryDocs(docsSizeInBytes, transformedDocs.size, monitorCtx) + ) { + performPercolateQueryAndResetCounters( + monitorCtx, + transformedDocs, + docsSizeInBytes, + monitor, + monitorMetadata, + monitorInputIndices, + concreteIndices, + inputRunResults, + docsToQueries + ) + } + } + } + + private fun shouldPerformPercolateQueryAndFlushInMemoryDocs( + docsSizeInBytes: AtomicLong, + numDocs: Int, + monitorCtx: MonitorRunnerExecutionContext, + ): Boolean { + return isInMemoryDocsSizeExceedingMemoryLimit(docsSizeInBytes.get(), monitorCtx) || + isInMemoryNumDocsExceedingMaxDocsPerPercolateQueryLimit(numDocs, monitorCtx) + } + + private suspend fun performPercolateQueryAndResetCounters( + monitorCtx: MonitorRunnerExecutionContext, + transformedDocs: MutableList>, + docsSizeInBytes: AtomicLong, + monitor: Monitor, + monitorMetadata: MonitorMetadata, + monitorInputIndices: List, + concreteIndices: List, + inputRunResults: MutableMap>, + docsToQueries: MutableMap>, + ) { + try { + val percolateQueryResponseHits = runPercolateQueryOnTransformedDocs( + monitorCtx, + transformedDocs, + monitor, + monitorMetadata, + concreteIndices, + monitorInputIndices + ) - if (hits.hits.isNotEmpty()) { - matchingDocs.addAll(getAllDocs(hits, index, concreteIndex, monitor.id, conflictingFields)) + percolateQueryResponseHits.forEach { hit -> + var id = hit.id + concreteIndices.forEach { id = id.replace("_${it}_${monitor.id}", "") } + monitorInputIndices.forEach { id = id.replace("_${it}_${monitor.id}", "") } + val docIndices = hit.field("_percolator_document_slot").values.map { it.toString().toInt() } + docIndices.forEach { idx -> + val docIndex = "${transformedDocs[idx].first}|${transformedDocs[idx].second.concreteIndexName}" + inputRunResults.getOrPut(id) { mutableSetOf() }.add(docIndex) + docsToQueries.getOrPut(docIndex) { mutableListOf() }.add(id) } - } catch (e: Exception) { - logger.warn("Failed to run for shard $shard. Error: ${e.message}") } + } finally { // no catch block because exception is caught and handled in runMonitor() class + transformedDocs.clear() + docsSizeInBytes.set(0) } - return matchingDocs } + /** Executes search query on given shard of given index to fetch docs with sequene number greater than prevSeqNo. + * This method hence fetches only docs from shard which haven't been queried before + */ private suspend fun searchShard( monitorCtx: MonitorRunnerExecutionContext, index: String, @@ -665,46 +765,55 @@ object DocumentLevelMonitorRunner : MonitorRunner() { SearchSourceBuilder() .version(true) .query(boolQueryBuilder) - .size(10000) // fixme: make this configurable. + .size(10000) // fixme: use scroll to ensure all docs are covered, when number of queryable docs are greater than 10k ) .preference(Preference.PRIMARY_FIRST.type()) val response: SearchResponse = monitorCtx.client!!.suspendUntil { monitorCtx.client!!.search(request, it) } if (response.status() !== RestStatus.OK) { - throw IOException("Failed to search shard: $shard") + throw IOException("Failed to search shard: [$shard] in index [$index]. Response status is ${response.status()}") } return response.hits } - private suspend fun getMatchedQueries( + /** Executes percolate query on the docs against the monitor's query index and return the hits from the search response*/ + private suspend fun runPercolateQueryOnTransformedDocs( monitorCtx: MonitorRunnerExecutionContext, - docs: List, + docs: MutableList>, monitor: Monitor, monitorMetadata: MonitorMetadata, - index: String, - concreteIndex: String + concreteIndices: List, + monitorInputIndices: List, ): SearchHits { - val boolQueryBuilder = BoolQueryBuilder().must(QueryBuilders.matchQuery("index", index).operator(Operator.AND)) - - val percolateQueryBuilder = PercolateQueryBuilderExt("query", docs, XContentType.JSON) + val indices = docs.stream().map { it.second.indexName }.distinct().collect(Collectors.toList()) + val boolQueryBuilder = BoolQueryBuilder().must(buildShouldClausesOverPerIndexMatchQueries(indices)) + val percolateQueryBuilder = + PercolateQueryBuilderExt("query", docs.map { it.second.docSource }, XContentType.JSON) if (monitor.id.isNotEmpty()) { boolQueryBuilder.must(QueryBuilders.matchQuery("monitor_id", monitor.id).operator(Operator.AND)) } boolQueryBuilder.filter(percolateQueryBuilder) - - val queryIndex = monitorMetadata.sourceToQueryIndexMapping[index + monitor.id] - if (queryIndex == null) { - val message = "Failed to resolve concrete queryIndex from sourceIndex during monitor execution!" + - " sourceIndex:$concreteIndex queryIndex:${monitor.dataSources.queryIndex}" + val queryIndices = + docs.map { monitorMetadata.sourceToQueryIndexMapping[it.second.indexName + monitor.id] }.distinct() + if (queryIndices.isEmpty()) { + val message = + "Monitor ${monitor.id}: Failed to resolve query Indices from source indices during monitor execution!" + + " sourceIndices: $monitorInputIndices" logger.error(message) throw AlertingException.wrap( OpenSearchStatusException(message, RestStatus.INTERNAL_SERVER_ERROR) ) } - val searchRequest = SearchRequest(queryIndex).preference(Preference.PRIMARY_FIRST.type()) + + val searchRequest = + SearchRequest().indices(*queryIndices.toTypedArray()).preference(Preference.PRIMARY_FIRST.type()) val searchSourceBuilder = SearchSourceBuilder() searchSourceBuilder.query(boolQueryBuilder) searchRequest.source(searchSourceBuilder) - + logger.debug( + "Monitor ${monitor.id}: " + + "Executing percolate query for docs from source indices " + + "$monitorInputIndices against query index $queryIndices" + ) var response: SearchResponse try { response = monitorCtx.client!!.suspendUntil { @@ -712,42 +821,58 @@ object DocumentLevelMonitorRunner : MonitorRunner() { } } catch (e: Exception) { throw IllegalStateException( - "Failed to run percolate search for sourceIndex [$index] and queryIndex [$queryIndex] for ${docs.size} document(s)", e + "Monitor ${monitor.id}:" + + " Failed to run percolate search for sourceIndex [${concreteIndices.joinToString()}] " + + "and queryIndex [${queryIndices.joinToString()}] for ${docs.size} document(s)", + e ) } if (response.status() !== RestStatus.OK) { - throw IOException("Failed to search percolate index: $queryIndex") + throw IOException( + "Monitor ${monitor.id}: Failed to search percolate index: ${queryIndices.joinToString()}. " + + "Response status is ${response.status()}" + ) } return response.hits } + /** we cannot use terms query because `index` field's mapping is of type TEXT and not keyword. Refer doc-level-queries.json*/ + private fun buildShouldClausesOverPerIndexMatchQueries(indices: List): BoolQueryBuilder { + val boolQueryBuilder = QueryBuilders.boolQuery() + indices.forEach { boolQueryBuilder.should(QueryBuilders.matchQuery("index", it)) } + return boolQueryBuilder + } - private fun getAllDocs( + /** Transform field names and index names in all the search hits to format required to run percolate search against them. + * Hits are transformed using method transformDocumentFieldNames() */ + private fun transformSearchHitsAndReconstructDocs( hits: SearchHits, index: String, concreteIndex: String, monitorId: String, - conflictingFields: List - ): List> { - return hits.map { hit -> - val sourceMap = hit.sourceAsMap - - transformDocumentFieldNames( - sourceMap, - conflictingFields, - "_${index}_$monitorId", - "_${concreteIndex}_$monitorId", - "" - ) - - var xContentBuilder = XContentFactory.jsonBuilder().map(sourceMap) - - val sourceRef = BytesReference.bytes(xContentBuilder) - - logger.debug("Document [${hit.id}] payload after transform: ", sourceRef.utf8ToString()) - - Pair(hit.id, sourceRef) - } + conflictingFields: List, + docsSizeInBytes: AtomicLong, + ): List> { + return hits.mapNotNull(fun(hit: SearchHit): Pair? { + try { + val sourceMap = hit.sourceAsMap + transformDocumentFieldNames( + sourceMap, + conflictingFields, + "_${index}_$monitorId", + "_${concreteIndex}_$monitorId", + "" + ) + var xContentBuilder = XContentFactory.jsonBuilder().map(sourceMap) + val sourceRef = BytesReference.bytes(xContentBuilder) + docsSizeInBytes.getAndAdd(sourceRef.ramBytesUsed()) + return Pair(hit.id, TransformedDocDto(index, concreteIndex, hit.id, sourceRef)) + } catch (e: Exception) { + logger.error("Monitor $monitorId: Failed to transform payload $hit for percolate query", e) + // skip any document which we fail to transform because we anyway won't be able to run percolate queries on them. + return null + } + }) } /** @@ -800,4 +925,33 @@ object DocumentLevelMonitorRunner : MonitorRunner() { } jsonAsMap.putAll(tempMap) } + + /** + * Returns true, if the docs fetched from shards thus far amount to less than threshold + * amount of percentage (default:10. setting is dynamic and configurable) of the total heap size or not. + * + */ + private fun isInMemoryDocsSizeExceedingMemoryLimit(docsBytesSize: Long, monitorCtx: MonitorRunnerExecutionContext): Boolean { + var thresholdPercentage = PERCOLATE_QUERY_DOCS_SIZE_MEMORY_PERCENTAGE_LIMIT.get(monitorCtx.settings) + val heapMaxBytes = monitorCtx.jvmStats!!.mem.heapMax.bytes + val thresholdBytes = (thresholdPercentage.toDouble() / 100.0) * heapMaxBytes + + return docsBytesSize > thresholdBytes + } + + private fun isInMemoryNumDocsExceedingMaxDocsPerPercolateQueryLimit(numDocs: Int, monitorCtx: MonitorRunnerExecutionContext): Boolean { + var maxNumDocsThreshold = PERCOLATE_QUERY_MAX_NUM_DOCS_IN_MEMORY.get(monitorCtx.settings) + return numDocs >= maxNumDocsThreshold + } + + /** + * POJO holding information about each doc's concrete index, id, input index pattern/alias/datastream name + * and doc source. A list of these POJOs would be passed to percolate query execution logic. + */ + private data class TransformedDocDto( + var indexName: String, + var concreteIndexName: String, + var docId: String, + var docSource: BytesReference + ) } diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerExecutionContext.kt b/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerExecutionContext.kt index 41a26bb79..3b17ceebe 100644 --- a/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerExecutionContext.kt +++ b/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerExecutionContext.kt @@ -18,6 +18,7 @@ import org.opensearch.cluster.service.ClusterService import org.opensearch.common.settings.Settings import org.opensearch.common.unit.TimeValue import org.opensearch.core.xcontent.NamedXContentRegistry +import org.opensearch.monitor.jvm.JvmStats import org.opensearch.script.ScriptService import org.opensearch.threadpool.ThreadPool @@ -36,6 +37,7 @@ data class MonitorRunnerExecutionContext( var alertService: AlertService? = null, var docLevelMonitorQueries: DocLevelMonitorQueries? = null, var workflowService: WorkflowService? = null, + var jvmStats: JvmStats? = null, @Volatile var retryPolicy: BackoffPolicy? = null, @Volatile var moveAlertsRetryPolicy: BackoffPolicy? = null, diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerService.kt b/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerService.kt index ca223f7a0..a884199f8 100644 --- a/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerService.kt +++ b/alerting/src/main/kotlin/org/opensearch/alerting/MonitorRunnerService.kt @@ -48,6 +48,7 @@ import org.opensearch.commons.alerting.model.action.Action import org.opensearch.commons.alerting.util.isBucketLevelMonitor import org.opensearch.core.action.ActionListener import org.opensearch.core.xcontent.NamedXContentRegistry +import org.opensearch.monitor.jvm.JvmStats import org.opensearch.script.Script import org.opensearch.script.ScriptService import org.opensearch.script.TemplateScript @@ -132,6 +133,11 @@ object MonitorRunnerService : JobRunner, CoroutineScope, AbstractLifecycleCompon return this } + fun registerJvmStats(jvmStats: JvmStats): MonitorRunnerService { + this.monitorCtx.jvmStats = jvmStats + return this + } + // Must be called after registerClusterService and registerSettings in AlertingPlugin fun registerConsumers(): MonitorRunnerService { monitorCtx.retryPolicy = BackoffPolicy.constantBackoff( diff --git a/alerting/src/main/kotlin/org/opensearch/alerting/settings/AlertingSettings.kt b/alerting/src/main/kotlin/org/opensearch/alerting/settings/AlertingSettings.kt index e23d44c5b..c7d571824 100644 --- a/alerting/src/main/kotlin/org/opensearch/alerting/settings/AlertingSettings.kt +++ b/alerting/src/main/kotlin/org/opensearch/alerting/settings/AlertingSettings.kt @@ -24,6 +24,30 @@ class AlertingSettings { Setting.Property.NodeScope, Setting.Property.Dynamic ) + /** Defines the threshold of the docs accumulated in memory to query against percolate query index in document + * level monitor execution. The docs are being collected from searching on shards of indices mentioned in the + * monitor input indices field. + */ + val PERCOLATE_QUERY_DOCS_SIZE_MEMORY_PERCENTAGE_LIMIT = Setting.intSetting( + "plugins.alerting.monitor.percolate_query_docs_size_memory_percentage_limit", + 10, + 0, + 100, + Setting.Property.NodeScope, Setting.Property.Dynamic + ) + + /** Defines the threshold of the maximum number of docs accumulated in memory to query against percolate query index in document + * level monitor execution. The docs are being collected from searching on shards of indices mentioned in the + * monitor input indices field. When the number of in-memory docs reaches or exceeds threshold we immediately perform percolate + * query with the current set of docs and clear the cache and repeat the process till we have queried all indices in current + * execution + */ + val PERCOLATE_QUERY_MAX_NUM_DOCS_IN_MEMORY = Setting.intSetting( + "plugins.alerting.monitor.percolate_query_max_num_docs_in_memory", + 10000, 1000, + Setting.Property.NodeScope, Setting.Property.Dynamic + ) + val INPUT_TIMEOUT = Setting.positiveTimeSetting( "plugins.alerting.input_timeout", LegacyOpenDistroAlertingSettings.INPUT_TIMEOUT,