Alternative less expensive stats service. (#549)

* Alternative less expensive stats service.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Fix NEP. Address is optional.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* revert null check,

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Specified return object.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

* Add tenant count overall.

Signed-off-by: kaizimmerm <kai.zimmermann@bosch-si.com>

hawkbit-mgmt-resource/src/main/java/org/eclipse/hawkbit/mgmt/rest/resource/MgmtSystemManagementResource.java

@@ -19,14 +19,13 @@ import org.eclipse.hawkbit.mgmt.json.model.systemmanagement.MgmtSystemStatistics
 import org.eclipse.hawkbit.mgmt.json.model.systemmanagement.MgmtSystemTenantServiceUsage;
 import org.eclipse.hawkbit.mgmt.rest.api.MgmtSystemManagementRestApi;
 import org.eclipse.hawkbit.repository.SystemManagement;
-import org.eclipse.hawkbit.repository.report.model.SystemUsageReport;
+import org.eclipse.hawkbit.repository.report.model.SystemUsageReportWithTenants;
 import org.eclipse.hawkbit.repository.report.model.TenantUsage;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.cache.Cache;
 import org.springframework.cache.CacheManager;
-import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.security.access.prepost.PreAuthorize;
 import org.springframework.web.bind.annotation.PathVariable;
@@ -68,7 +67,7 @@ public class MgmtSystemManagementResource implements MgmtSystemManagementRestApi
      */
     @Override
     public ResponseEntity<MgmtSystemStatisticsRest> getSystemUsageStats() {
-        final SystemUsageReport report = systemManagement.getSystemUsageStatistics();
+        final SystemUsageReportWithTenants report = systemManagement.getSystemUsageStatisticsWithTenants();
 
         final MgmtSystemStatisticsRest result = new MgmtSystemStatisticsRest()
                 .setOverallActions(report.getOverallActions()).setOverallArtifacts(report.getOverallArtifacts())

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/repository/SystemManagement.java

@@ -17,6 +17,7 @@ import org.eclipse.hawkbit.repository.model.DistributionSetType;
 import org.eclipse.hawkbit.repository.model.SoftwareModuleType;
 import org.eclipse.hawkbit.repository.model.TenantMetaData;
 import org.eclipse.hawkbit.repository.report.model.SystemUsageReport;
+import org.eclipse.hawkbit.repository.report.model.SystemUsageReportWithTenants;
 import org.eclipse.hawkbit.tenancy.TenantAware;
 import org.springframework.data.domain.Page;
 import org.springframework.data.domain.Pageable;
@@ -70,6 +71,14 @@ public interface SystemManagement {
      * @return SystemUsageReport of the current system
      */
     @PreAuthorize(SpringEvalExpressions.HAS_AUTH_SYSTEM_ADMIN)
+    SystemUsageReportWithTenants getSystemUsageStatisticsWithTenants();
+
+    /**
+     * Calculated overall system usage statistics
+     *
+     * @return SystemUsageReport of the current system
+     */
+    @PreAuthorize(SpringEvalExpressions.HAS_AUTH_SYSTEM_ADMIN)
     SystemUsageReport getSystemUsageStatistics();
 
     /**

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/repository/report/model/SystemUsageReport.java

@@ -8,10 +8,6 @@
  */
 package org.eclipse.hawkbit.repository.report.model;
 
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.List;
-
 /**
  * Bean for holding the system usage stats.
  *
@@ -21,8 +17,7 @@ public class SystemUsageReport {
     private final long overallArtifacts;
     private final long overallArtifactVolumeInBytes;
     private final long overallActions;
-
-    private final List<TenantUsage> tenants = new ArrayList<>();
+    private final long overallTenants;
 
     /**
      * Constructor.
@@ -35,60 +30,35 @@ public class SystemUsageReport {
      *            of the system
      * @param overallArtifactVolumeInBytes
      *            of the system
+     * @param overallTenants
+     *            of the system
      */
     public SystemUsageReport(final long overallTargets, final long overallArtifacts, final long overallActions,
-            final long overallArtifactVolumeInBytes) {
-        super();
+            final long overallArtifactVolumeInBytes, final long overallTenants) {
         this.overallTargets = overallTargets;
         this.overallArtifacts = overallArtifacts;
         this.overallActions = overallActions;
-
         this.overallArtifactVolumeInBytes = overallArtifactVolumeInBytes;
+        this.overallTenants = overallTenants;
     }
 
-    /**
-     * @return overallTargets in the system
-     */
     public long getOverallTargets() {
         return overallTargets;
     }
 
-    /**
-     * @return overallArtifacts in the system
-     */
     public long getOverallArtifacts() {
         return overallArtifacts;
     }
 
-    /**
-     * @return overallArtifactVolumeInBytes of the system
-     */
     public long getOverallArtifactVolumeInBytes() {
         return overallArtifactVolumeInBytes;
     }
 
-    /**
-     * @param tenantUsage
-     *            of one tenant
-     * @return updated bean
-     */
-    public SystemUsageReport addTenantData(final TenantUsage tenantUsage) {
-        tenants.add(tenantUsage);
-        return this;
-    }
-
-    /**
-     * @return actions of system
-     */
     public long getOverallActions() {
         return overallActions;
     }
 
-    /**
-     * @return tenant data
-     */
-    public List<TenantUsage> getTenants() {
-        return Collections.unmodifiableList(tenants);
+    public long getOverallTenants() {
+        return overallTenants;
     }
-
 }

hawkbit-repository/hawkbit-repository-api/src/main/java/org/eclipse/hawkbit/repository/report/model/SystemUsageReportWithTenants.java

@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) 2015 Bosch Software Innovations GmbH and others.
+ *
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ */
+package org.eclipse.hawkbit.repository.report.model;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ * Bean for holding the system usage stats including tenant specific data.
+ *
+ */
+public class SystemUsageReportWithTenants extends SystemUsageReport {
+
+    private final List<TenantUsage> tenants = new ArrayList<>();
+
+    /**
+     * Constructor.
+     *
+     * @param overallTargets
+     *            of the system
+     * @param overallArtifacts
+     *            of the system
+     * @param overallActions
+     *            of the system
+     * @param overallArtifactVolumeInBytes
+     *            of the system
+     */
+    public SystemUsageReportWithTenants(final long overallTargets, final long overallArtifacts,
+            final long overallActions, final long overallArtifactVolumeInBytes, final long overallTenants) {
+        super(overallTargets, overallArtifacts, overallActions, overallArtifactVolumeInBytes, overallTenants);
+    }
+
+    /**
+     * @param tenantUsage
+     *            of one tenant
+     * @return updated bean
+     */
+    public SystemUsageReportWithTenants addTenantData(final TenantUsage tenantUsage) {
+        tenants.add(tenantUsage);
+        return this;
+    }
+
+    /**
+     * @return tenant data
+     */
+    public List<TenantUsage> getTenants() {
+        return Collections.unmodifiableList(tenants);
+    }
+
+}

hawkbit-repository/hawkbit-repository-jpa/src/main/java/org/eclipse/hawkbit/repository/jpa/JpaSystemManagement.java

@@ -30,6 +30,7 @@ import org.eclipse.hawkbit.repository.model.DistributionSetType;
 import org.eclipse.hawkbit.repository.model.SoftwareModuleType;
 import org.eclipse.hawkbit.repository.model.TenantMetaData;
 import org.eclipse.hawkbit.repository.report.model.SystemUsageReport;
+import org.eclipse.hawkbit.repository.report.model.SystemUsageReportWithTenants;
 import org.eclipse.hawkbit.security.SystemSecurityContext;
 import org.eclipse.hawkbit.tenancy.TenantAware;
 import org.eclipse.persistence.config.PersistenceUnitProperties;
@@ -145,15 +146,20 @@ public class JpaSystemManagement implements CurrentTenantCacheKeyGenerator, Syst
         final Long actions = (Long) entityManager.createNativeQuery("SELECT COUNT(id) FROM sp_action")
                 .getSingleResult();
 
-        final SystemUsageReport result = new SystemUsageReport(targets, artifacts, actions,
-                sumOfArtifacts.setScale(0, BigDecimal.ROUND_HALF_UP).longValue());
+        return new SystemUsageReportWithTenants(targets, artifacts, actions,
+                sumOfArtifacts.setScale(0, BigDecimal.ROUND_HALF_UP).longValue(), tenantMetaDataRepository.count());
+    }
+
+    @Override
+    public SystemUsageReportWithTenants getSystemUsageStatisticsWithTenants() {
+        final SystemUsageReportWithTenants result = (SystemUsageReportWithTenants) getSystemUsageStatistics();
 
         usageStatsPerTenant(result);
 
         return result;
     }
 
-    private void usageStatsPerTenant(final SystemUsageReport report) {
+    private void usageStatsPerTenant(final SystemUsageReportWithTenants report) {
         final List<String> tenants = findTenants(new PageRequest(0, MAX_TENANTS_QUERY)).getContent();
 
         tenants.forEach(tenant -> tenantAware.runAsTenant(tenant, () -> {

hawkbit-repository/hawkbit-repository-jpa/src/test/java/org/eclipse/hawkbit/repository/jpa/SystemManagementTest.java

@@ -51,7 +51,7 @@ public class SystemManagementTest extends AbstractJpaIntegrationTest {
         assertThat(systemManagement.getSystemUsageStatistics().getOverallArtifactVolumeInBytes()).isEqualTo(1234 * 2);
 
         // per tenant data
-        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatistics().getTenants();
+        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatisticsWithTenants().getTenants();
         assertThat(tenants).hasSize(3);
         assertThat(tenants).containsOnly(new TenantUsage("default"),
                 new TenantUsage("tenant0").setArtifacts(1).setOverallArtifactVolumeInBytes(1234),
@@ -69,10 +69,11 @@ public class SystemManagementTest extends AbstractJpaIntegrationTest {
         assertThat(systemManagement.getSystemUsageStatistics().getOverallActions()).isEqualTo(0);
 
         // per tenant data
-        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatistics().getTenants();
+        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatisticsWithTenants().getTenants();
         assertThat(tenants).hasSize(3);
         assertThat(tenants).containsOnly(new TenantUsage("default"), new TenantUsage("tenant0").setTargets(100),
                 new TenantUsage("tenant1").setTargets(100));
+
     }
 
     @Test
@@ -85,7 +86,7 @@ public class SystemManagementTest extends AbstractJpaIntegrationTest {
         assertThat(systemManagement.getSystemUsageStatistics().getOverallActions()).isEqualTo(400);
 
         // per tenant data
-        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatistics().getTenants();
+        final List<TenantUsage> tenants = systemManagement.getSystemUsageStatisticsWithTenants().getTenants();
         assertThat(tenants).hasSize(3);
         assertThat(tenants).containsOnly(new TenantUsage("default"),
                 new TenantUsage("tenant0").setTargets(100).setActions(200),