peng-yongsheng closed pull request #812: Provide the getAlarmTrend query.
URL: https://github.com/apache/incubator-skywalking/pull/812
 
 
   

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diff --git 
a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/StorageModule.java
 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/StorageModule.java
index 425a71614..714255a06 100644
--- 
a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/StorageModule.java
+++ 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/StorageModule.java
@@ -105,6 +105,7 @@
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceHourMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMinuteMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMonthMetricPersistenceDAO;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationComponentUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationMappingUIDAO;
@@ -264,6 +265,7 @@ private void addUiDAO(List<Class> classes) {
         classes.add(IApplicationAlarmUIDAO.class);
         classes.add(IInstanceAlarmUIDAO.class);
         classes.add(IServiceAlarmUIDAO.class);
+        classes.add(IApplicationAlarmListUIDAO.class);
     }
 
     private void addAlarmDAO(List<Class> classes) {
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IApplicationAlarmListUIDAO.java
 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IApplicationAlarmListUIDAO.java
new file mode 100644
index 000000000..3cd92773a
--- /dev/null
+++ 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/dao/ui/IApplicationAlarmListUIDAO.java
@@ -0,0 +1,31 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.collector.storage.dao.ui;
+
+import java.util.List;
+import org.apache.skywalking.apm.collector.storage.base.dao.DAO;
+import org.apache.skywalking.apm.collector.storage.ui.common.Step;
+
+/**
+ * @author peng-yongsheng
+ */
+public interface IApplicationAlarmListUIDAO extends DAO {
+
+    List<Integer> getAlarmedApplicationNum(Step step, long start, long end);
+}
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/overview/AlarmTrend.java
 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/overview/AlarmTrend.java
index 025d27df8..d040f30e0 100644
--- 
a/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/overview/AlarmTrend.java
+++ 
b/apm-collector/apm-collector-storage/collector-storage-define/src/main/java/org/apache/skywalking/apm/collector/storage/ui/overview/AlarmTrend.java
@@ -18,11 +18,25 @@
 
 package org.apache.skywalking.apm.collector.storage.ui.overview;
 
+import java.util.LinkedList;
 import java.util.List;
 
 /**
  * @author peng-yongsheng
  */
 public class AlarmTrend {
-    public List<Integer> numOfAlarmRate;
+
+    private List<Integer> numOfAlarmRate;
+
+    public AlarmTrend() {
+        this.numOfAlarmRate = new LinkedList<>();
+    }
+
+    public List<Integer> getNumOfAlarmRate() {
+        return numOfAlarmRate;
+    }
+
+    public void setNumOfAlarmRate(List<Integer> numOfAlarmRate) {
+        this.numOfAlarmRate = numOfAlarmRate;
+    }
 }
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/StorageModuleEsProvider.java
 
b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/StorageModuleEsProvider.java
index 419069e8f..a4eda177f 100644
--- 
a/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/StorageModuleEsProvider.java
+++ 
b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/StorageModuleEsProvider.java
@@ -114,6 +114,7 @@
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceHourMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMinuteMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMonthMetricPersistenceDAO;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationComponentUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationMappingUIDAO;
@@ -220,6 +221,7 @@
 import 
org.apache.skywalking.apm.collector.storage.es.dao.srmp.ServiceReferenceMinuteMetricEsPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.es.dao.srmp.ServiceReferenceMonthMetricEsPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.es.dao.ui.ApplicationAlarmEsUIDAO;
+import 
org.apache.skywalking.apm.collector.storage.es.dao.ui.ApplicationAlarmListEsUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.es.dao.ui.ApplicationComponentEsUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.es.dao.ui.ApplicationMappingEsUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.es.dao.ui.ApplicationMetricEsUIDAO;
@@ -430,6 +432,8 @@ private void registerUiDAO() throws 
ServiceNotProvidedException {
         this.registerServiceImplementation(IApplicationAlarmUIDAO.class, new 
ApplicationAlarmEsUIDAO(elasticSearchClient));
         this.registerServiceImplementation(IInstanceAlarmUIDAO.class, new 
InstanceAlarmEsUIDAO(elasticSearchClient));
         this.registerServiceImplementation(IServiceAlarmUIDAO.class, new 
ServiceAlarmEsUIDAO(elasticSearchClient));
+
+        this.registerServiceImplementation(IApplicationAlarmListUIDAO.class, 
new ApplicationAlarmListEsUIDAO(elasticSearchClient));
     }
 
     private void registerAlarmDAO() throws ServiceNotProvidedException {
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/ApplicationAlarmListEsUIDAO.java
 
b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/ApplicationAlarmListEsUIDAO.java
new file mode 100644
index 000000000..158bb82a7
--- /dev/null
+++ 
b/apm-collector/apm-collector-storage/collector-storage-es-provider/src/main/java/org/apache/skywalking/apm/collector/storage/es/dao/ui/ApplicationAlarmListEsUIDAO.java
@@ -0,0 +1,69 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.collector.storage.es.dao.ui;
+
+import java.util.LinkedList;
+import java.util.List;
+import 
org.apache.skywalking.apm.collector.client.elasticsearch.ElasticSearchClient;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
+import org.apache.skywalking.apm.collector.storage.es.base.dao.EsDAO;
+import 
org.apache.skywalking.apm.collector.storage.table.alarm.ApplicationAlarmListTable;
+import org.apache.skywalking.apm.collector.storage.ui.common.Step;
+import 
org.apache.skywalking.apm.collector.storage.utils.TimePyramidTableNameBuilder;
+import org.elasticsearch.action.search.SearchRequestBuilder;
+import org.elasticsearch.action.search.SearchResponse;
+import org.elasticsearch.action.search.SearchType;
+import org.elasticsearch.index.query.QueryBuilders;
+import org.elasticsearch.search.aggregations.AggregationBuilders;
+import org.elasticsearch.search.aggregations.bucket.terms.Terms;
+
+/**
+ * @author peng-yongsheng
+ */
+public class ApplicationAlarmListEsUIDAO extends EsDAO implements 
IApplicationAlarmListUIDAO {
+
+    public ApplicationAlarmListEsUIDAO(ElasticSearchClient client) {
+        super(client);
+    }
+
+    @Override public List<Integer> getAlarmedApplicationNum(Step step, long 
start, long end) {
+        String tableName = TimePyramidTableNameBuilder.build(step, 
ApplicationAlarmListTable.TABLE);
+        SearchRequestBuilder searchRequestBuilder = 
getClient().prepareSearch(tableName);
+        searchRequestBuilder.setTypes(ApplicationAlarmListTable.TABLE_TYPE);
+        searchRequestBuilder.setSearchType(SearchType.DFS_QUERY_THEN_FETCH);
+        
searchRequestBuilder.setQuery(QueryBuilders.rangeQuery(ApplicationAlarmListTable.COLUMN_TIME_BUCKET).gte(start).lte(end));
+        searchRequestBuilder.setSize(0);
+
+        
searchRequestBuilder.addAggregation(AggregationBuilders.terms(ApplicationAlarmListTable.COLUMN_TIME_BUCKET).field(ApplicationAlarmListTable.COLUMN_TIME_BUCKET).size(100)
+            
.subAggregation(AggregationBuilders.terms(ApplicationAlarmListTable.COLUMN_APPLICATION_ID).field(ApplicationAlarmListTable.COLUMN_APPLICATION_ID).size(100)));
+
+        SearchResponse searchResponse = 
searchRequestBuilder.execute().actionGet();
+
+        Terms timeBucketTerms = 
searchResponse.getAggregations().get(ApplicationAlarmListTable.COLUMN_TIME_BUCKET);
+
+        List<Integer> alarmApplicationNum = new LinkedList<>();
+        for (Terms.Bucket timeBucketBucket : timeBucketTerms.getBuckets()) {
+            Terms applicationBucketTerms = 
timeBucketBucket.getAggregations().get(ApplicationAlarmListTable.COLUMN_APPLICATION_ID);
+            int num = applicationBucketTerms.getBuckets().size();
+            alarmApplicationNum.add(num);
+        }
+
+        return alarmApplicationNum;
+    }
+}
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/StorageModuleH2Provider.java
 
b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/StorageModuleH2Provider.java
index 49124cdaf..43ba27ea6 100644
--- 
a/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/StorageModuleH2Provider.java
+++ 
b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/StorageModuleH2Provider.java
@@ -110,6 +110,7 @@
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceHourMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMinuteMetricPersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.srmp.IServiceReferenceMonthMetricPersistenceDAO;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationComponentUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationMappingUIDAO;
@@ -216,6 +217,7 @@
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.srmp.ServiceReferenceMinuteMetricH2PersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.srmp.ServiceReferenceMonthMetricH2PersistenceDAO;
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.ui.ApplicationAlarmH2UIDAO;
+import 
org.apache.skywalking.apm.collector.storage.h2.dao.ui.ApplicationAlarmListH2UIDAO;
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.ui.ApplicationComponentH2UIDAO;
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.ui.ApplicationMappingH2UIDAO;
 import 
org.apache.skywalking.apm.collector.storage.h2.dao.ui.ApplicationMetricH2UIDAO;
@@ -406,6 +408,8 @@ private void registerUiDAO() throws 
ServiceNotProvidedException {
         this.registerServiceImplementation(IApplicationAlarmUIDAO.class, new 
ApplicationAlarmH2UIDAO(h2Client));
         this.registerServiceImplementation(IInstanceAlarmUIDAO.class, new 
InstanceAlarmH2UIDAO(h2Client));
         this.registerServiceImplementation(IServiceAlarmUIDAO.class, new 
ServiceAlarmH2UIDAO(h2Client));
+
+        this.registerServiceImplementation(IApplicationAlarmListUIDAO.class, 
new ApplicationAlarmListH2UIDAO(h2Client));
     }
 
     private void registerAlarmDAO() throws ServiceNotProvidedException {
diff --git 
a/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/ApplicationAlarmListH2UIDAO.java
 
b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/ApplicationAlarmListH2UIDAO.java
new file mode 100644
index 000000000..598144a2a
--- /dev/null
+++ 
b/apm-collector/apm-collector-storage/collector-storage-h2-provider/src/main/java/org/apache/skywalking/apm/collector/storage/h2/dao/ui/ApplicationAlarmListH2UIDAO.java
@@ -0,0 +1,39 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package org.apache.skywalking.apm.collector.storage.h2.dao.ui;
+
+import java.util.List;
+import org.apache.skywalking.apm.collector.client.h2.H2Client;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
+import org.apache.skywalking.apm.collector.storage.h2.base.dao.H2DAO;
+import org.apache.skywalking.apm.collector.storage.ui.common.Step;
+
+/**
+ * @author peng-yongsheng
+ */
+public class ApplicationAlarmListH2UIDAO extends H2DAO implements 
IApplicationAlarmListUIDAO {
+
+    public ApplicationAlarmListH2UIDAO(H2Client client) {
+        super(client);
+    }
+
+    @Override public List<Integer> getAlarmedApplicationNum(Step step, long 
start, long end) {
+        return null;
+    }
+}
diff --git 
a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
 
b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
index 5f2059daf..c609e5d75 100644
--- 
a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
+++ 
b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/query/OverViewLayerQuery.java
@@ -109,10 +109,13 @@ public ClusterBrief getClusterBrief(Duration duration) 
throws ParseException {
     }
 
     public AlarmTrend getAlarmTrend(Duration duration) throws ParseException {
+        long startTimeBucket = 
DurationUtils.INSTANCE.exchangeToTimeBucket(duration.getStart());
+        long endTimeBucket = 
DurationUtils.INSTANCE.exchangeToTimeBucket(duration.getEnd());
+
         long start = 
DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), 
duration.getStart());
         long end = 
DurationUtils.INSTANCE.durationToSecondTimeBucket(duration.getStep(), 
duration.getEnd());
 
-        return getAlarmService().getApplicationAlarmTrend(duration.getStep(), 
start, end);
+        return getAlarmService().getApplicationAlarmTrend(duration.getStep(), 
startTimeBucket, endTimeBucket, start, end);
     }
 
     public ConjecturalAppBrief getConjecturalApps(Duration duration) throws 
ParseException {
diff --git 
a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/AlarmService.java
 
b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/AlarmService.java
index 066d71c68..7ecd6f3ec 100644
--- 
a/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/AlarmService.java
+++ 
b/apm-collector/apm-collector-ui/collector-ui-jetty-provider/src/main/java/org/apache/skywalking/apm/collector/ui/service/AlarmService.java
@@ -22,14 +22,15 @@
 import java.util.List;
 import org.apache.skywalking.apm.collector.core.module.ModuleManager;
 import org.apache.skywalking.apm.collector.storage.StorageModule;
+import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmListUIDAO;
 import 
org.apache.skywalking.apm.collector.storage.dao.ui.IApplicationAlarmUIDAO;
 import org.apache.skywalking.apm.collector.storage.dao.ui.IInstanceAlarmUIDAO;
+import org.apache.skywalking.apm.collector.storage.dao.ui.IInstanceUIDAO;
 import org.apache.skywalking.apm.collector.storage.dao.ui.IServiceAlarmUIDAO;
 import org.apache.skywalking.apm.collector.storage.ui.alarm.Alarm;
+import org.apache.skywalking.apm.collector.storage.ui.application.Application;
 import org.apache.skywalking.apm.collector.storage.ui.common.Step;
 import org.apache.skywalking.apm.collector.storage.ui.overview.AlarmTrend;
-import org.apache.skywalking.apm.collector.storage.utils.DurationPoint;
-import org.apache.skywalking.apm.collector.ui.utils.DurationUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
@@ -40,14 +41,18 @@
 
     private final Logger logger = LoggerFactory.getLogger(AlarmService.class);
 
+    private final IInstanceUIDAO instanceDAO;
     private final IApplicationAlarmUIDAO applicationAlarmUIDAO;
     private final IInstanceAlarmUIDAO instanceAlarmUIDAO;
     private final IServiceAlarmUIDAO serviceAlarmUIDAO;
+    private final IApplicationAlarmListUIDAO applicationAlarmListUIDAO;
 
     public AlarmService(ModuleManager moduleManager) {
+        this.instanceDAO = 
moduleManager.find(StorageModule.NAME).getService(IInstanceUIDAO.class);
         this.applicationAlarmUIDAO = 
moduleManager.find(StorageModule.NAME).getService(IApplicationAlarmUIDAO.class);
         this.instanceAlarmUIDAO = 
moduleManager.find(StorageModule.NAME).getService(IInstanceAlarmUIDAO.class);
         this.serviceAlarmUIDAO = 
moduleManager.find(StorageModule.NAME).getService(IServiceAlarmUIDAO.class);
+        this.applicationAlarmListUIDAO = 
moduleManager.find(StorageModule.NAME).getService(IApplicationAlarmListUIDAO.class);
     }
 
     public Alarm loadApplicationAlarmList(String keyword, long start, long end,
@@ -68,10 +73,15 @@ public Alarm loadServiceAlarmList(String keyword, long 
start, long end,
         return serviceAlarmUIDAO.loadAlarmList(keyword, start, end, limit, 
from);
     }
 
-    public AlarmTrend getApplicationAlarmTrend(Step step, long start, long 
end) throws ParseException {
-        List<DurationPoint> durationPoints = 
DurationUtils.INSTANCE.getDurationPoints(step, start, end);
+    public AlarmTrend getApplicationAlarmTrend(Step step, long 
startTimeBucket, long endTimeBucket, long start,
+        long end) throws ParseException {
+        List<Application> applications = instanceDAO.getApplications(start, 
end);
 
+        List<Integer> applicationNum = 
applicationAlarmListUIDAO.getAlarmedApplicationNum(step, startTimeBucket, 
endTimeBucket);
         AlarmTrend alarmTrend = new AlarmTrend();
+        applicationNum.forEach(num -> {
+            alarmTrend.getNumOfAlarmRate().add((num * 10000) / 
(applications.size()));
+        });
         return alarmTrend;
     }
 }


 

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