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117 changes: 117 additions & 0 deletions
117
...main/java/org/opensearch/securityanalytics/correlation/alert/CorrelationAlertService.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,117 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.opensearch.securityanalytics.correlation.alert; | ||
|
|
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| import org.apache.logging.log4j.LogManager; | ||
| import org.apache.logging.log4j.Logger; | ||
| import org.opensearch.action.search.SearchRequest; | ||
| import org.opensearch.action.search.SearchResponse; | ||
| import org.opensearch.client.Client; | ||
| import org.opensearch.cluster.ClusterState; | ||
| import org.opensearch.cluster.service.ClusterService; | ||
| import org.opensearch.common.xcontent.LoggingDeprecationHandler; | ||
| import org.opensearch.common.xcontent.XContentType; | ||
| import org.opensearch.commons.alerting.model.Table; | ||
| import org.opensearch.core.action.ActionListener; | ||
| import org.opensearch.core.xcontent.NamedXContentRegistry; | ||
| import org.opensearch.core.xcontent.XContentParser; | ||
| import org.opensearch.index.query.BoolQueryBuilder; | ||
| import org.opensearch.index.query.QueryBuilders; | ||
| import org.opensearch.search.SearchHit; | ||
| import org.opensearch.search.builder.SearchSourceBuilder; | ||
| import org.opensearch.search.sort.FieldSortBuilder; | ||
| import org.opensearch.search.sort.SortBuilders; | ||
| import org.opensearch.search.sort.SortOrder; | ||
| import org.opensearch.securityanalytics.model.CorrelationAlert; | ||
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|
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| import java.io.IOException; | ||
| import java.util.ArrayList; | ||
| import java.util.Collections; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
|
|
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| public class CorrelationAlertService { | ||
| public static final String CORRELATION_ALERT_INDEX = ".opensearch-sap-correlations-alerts"; | ||
| private static final Logger log = LogManager.getLogger(CorrelationAlertService.class); | ||
| private final Client client; | ||
| private final ClusterService clusterService; | ||
| private final NamedXContentRegistry xContentRegistry; | ||
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| public CorrelationAlertService(Client client, ClusterService clusterService, NamedXContentRegistry xContentRegistry) { | ||
| this.client = client; | ||
| this.clusterService = clusterService; | ||
| this.xContentRegistry = xContentRegistry; | ||
| } | ||
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| public void getCorrelationAlerts(ActionListener<CorrelationAlertsList> listener,Table table, | ||
| String severityLevel, | ||
| String alertState) { | ||
| try { | ||
| if (false == correlationAlertsIndexExists()) { | ||
| listener.onResponse(new CorrelationAlertsList(Collections.emptyList(), 0)); | ||
| } else { | ||
| FieldSortBuilder sortBuilder = SortBuilders | ||
| .fieldSort(table.getSortString()) | ||
| .order(SortOrder.fromString(table.getSortOrder())); | ||
| if (null != table.getMissing() && false == table.getMissing().isEmpty()) { | ||
| sortBuilder.missing(table.getMissing()); | ||
| } | ||
| BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery(); | ||
| if (false == Objects.equals(severityLevel, "ALL")) { | ||
| queryBuilder.filter(QueryBuilders.termQuery("severity", severityLevel)); | ||
| } | ||
| if (false == Objects.equals(alertState, "ALL")) { | ||
| queryBuilder.filter(QueryBuilders.termQuery("state", alertState)); | ||
| } | ||
| SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder() | ||
| .version(true) | ||
| .seqNoAndPrimaryTerm(true) | ||
| .query(queryBuilder) | ||
| .sort(sortBuilder) | ||
| .size(table.getSize()) | ||
| .from(table.getStartIndex()); | ||
|
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| SearchRequest searchRequest = new SearchRequest(CORRELATION_ALERT_INDEX).source(searchSourceBuilder); | ||
| client.search(searchRequest, ActionListener.wrap( searchResponse -> { | ||
| if (0 == searchResponse.getHits().getHits().length) { | ||
| listener.onResponse(new CorrelationAlertsList(Collections.emptyList(), 0)); | ||
| } else { | ||
| listener.onResponse( new CorrelationAlertsList( | ||
| parseCorrelationAlerts(searchResponse), | ||
| searchResponse.getHits() != null && searchResponse.getHits().getTotalHits() != null ? | ||
| (int) searchResponse.getHits().getTotalHits().value : 0) | ||
| ); | ||
| } | ||
| }, | ||
| e -> { | ||
| log.error("Search request to fetch correlation alerts failed", e); | ||
| listener.onFailure(e); | ||
| } | ||
| )); | ||
| } | ||
| } catch (Exception e) { | ||
| log.error("Unexpected error when fetch correlation alerts", e); | ||
| listener.onFailure(e); | ||
| } | ||
| } | ||
| public boolean correlationAlertsIndexExists() { | ||
| ClusterState clusterState = clusterService.state(); | ||
| return clusterState.getRoutingTable().hasIndex(CORRELATION_ALERT_INDEX); | ||
| } | ||
|
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| public List<CorrelationAlert> parseCorrelationAlerts(final SearchResponse response) throws IOException { | ||
| List<CorrelationAlert> alerts = new ArrayList<>(); | ||
| for (SearchHit hit : response.getHits()) { | ||
| XContentParser xcp = XContentType.JSON.xContent().createParser(xContentRegistry, | ||
| LoggingDeprecationHandler.INSTANCE, hit.getSourceAsString()); | ||
| CorrelationAlert correlationAlert = CorrelationAlert.docParse(xcp, hit.getId(), hit.getVersion()); | ||
| alerts.add(correlationAlert); | ||
| } | ||
| return alerts; | ||
| } | ||
| } | ||
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33 changes: 33 additions & 0 deletions
33
src/main/java/org/opensearch/securityanalytics/correlation/alert/CorrelationAlertsList.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| /* | ||
| * Copyright OpenSearch Contributors | ||
| * SPDX-License-Identifier: Apache-2.0 | ||
| */ | ||
| package org.opensearch.securityanalytics.correlation.alert; | ||
|
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| import org.opensearch.securityanalytics.model.CorrelationAlert; | ||
|
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| import java.util.List; | ||
|
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| /** | ||
| * Wrapper class that holds list of correlation alerts and total number of alerts available. | ||
| * Useful for pagination. | ||
| */ | ||
| public class CorrelationAlertsList { | ||
|
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| private final List<CorrelationAlert> correlationAlertList; | ||
| private final Integer totalAlerts; | ||
|
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| public CorrelationAlertsList(List<CorrelationAlert> correlationAlertList, Integer totalAlerts) { | ||
| this.correlationAlertList = correlationAlertList; | ||
| this.totalAlerts = totalAlerts; | ||
| } | ||
|
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| public List<CorrelationAlert> getCorrelationAlertList() { | ||
| return correlationAlertList; | ||
| } | ||
|
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| public Integer getTotalAlerts() { | ||
| return totalAlerts; | ||
| } | ||
|
|
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| } |
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