1 files changed, 154 insertions, 0 deletions
diff --git a/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ClElementStatisticsProvider.java b/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ClElementStatisticsProvider.java
new file mode 100644
index 000000000..8a06cbf1e
--- /dev/null
+++ b/models/src/main/java/org/onap/policy/clamp/controlloop/models/controlloop/persistence/provider/ClElementStatisticsProvider.java
@@ -0,0 +1,154 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * Copyright (C) 2021 Nordix Foundation.
+ * ================================================================================
+ * Licensed 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.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.clamp.controlloop.models.controlloop.persistence.provider;
+
+import java.time.Instant;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+import javax.ws.rs.core.Response;
+import lombok.NonNull;
+import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
+import org.onap.policy.clamp.controlloop.models.controlloop.persistence.concepts.JpaClElementStatistics;
+import org.onap.policy.common.parameters.BeanValidationResult;
+import org.onap.policy.models.base.PfModelException;
+import org.onap.policy.models.base.PfModelRuntimeException;
+import org.onap.policy.models.base.PfReferenceTimestampKey;
+import org.onap.policy.models.provider.PolicyModelsProviderParameters;
+import org.onap.policy.models.provider.impl.AbstractModelsProvider;
+
+/**
+ * This class provides the provision of information on control loop element statistics in the database to callers.
+ *
+ * @author Ramesh Murugan Iyer (ramesh.murugan.iyer@est.tech)
+ */
+public class ClElementStatisticsProvider extends AbstractModelsProvider {
+
+    /**
+     * Create a provider for control loop element statistics.
+     *
+     * @param parameters the parameters for database access
+     * @throws PfModelException on initiation errors
+     */
+    public ClElementStatisticsProvider(@NonNull PolicyModelsProviderParameters parameters) throws PfModelException {
+        super(parameters);
+        this.init();
+    }
+
+    /**
+     * Creates control loop element statistics.
+     *
+     * @param clElementStatisticsList a specification of the CL element statistics to create
+     * @return the clElement statistics created
+     * @throws PfModelException on errors creating clElement statistics
+     */
+    public List<ClElementStatistics> createClElementStatistics(
+            @NonNull final List<ClElementStatistics> clElementStatisticsList) throws PfModelException {
+
+        BeanValidationResult validationResult =
+                new BeanValidationResult("control loop element statistics list", clElementStatisticsList);
+        for (ClElementStatistics clElementStatistics : clElementStatisticsList) {
+            JpaClElementStatistics jpaClElementStatistics = new JpaClElementStatistics();
+            jpaClElementStatistics.fromAuthorative(clElementStatistics);
+
+            validationResult.addResult(jpaClElementStatistics.validate("control loop element statistics"));
+        }
+
+        if (!validationResult.isValid()) {
+            throw new PfModelRuntimeException(Response.Status.BAD_REQUEST, validationResult.getResult());
+        }
+
+        for (ClElementStatistics clElementStatistics : clElementStatisticsList) {
+            JpaClElementStatistics jpaClElementStatistics = new JpaClElementStatistics();
+            jpaClElementStatistics.fromAuthorative(clElementStatistics);
+            getPfDao().create(jpaClElementStatistics);
+        }
+
+        // Return the created control loop element statistics
+        List<ClElementStatistics> elementStatistics = new ArrayList<>(clElementStatisticsList.size());
+
+        for (ClElementStatistics clElementStat : clElementStatisticsList) {
+            JpaClElementStatistics jpaClElementStatistics = getPfDao().get(JpaClElementStatistics.class,
+                new PfReferenceTimestampKey(clElementStat.getParticipantId().getName(),
+                    clElementStat.getParticipantId().getVersion(), clElementStat.getId().toString(),
+                    clElementStat.getTimeStamp()));
+            elementStatistics.add(jpaClElementStatistics.toAuthorative());
+        }
+
+        return elementStatistics;
+    }
+
+    /**
+     * Convert JPA clElement statistics list to clElement statistics list.
+     *
+     * @param jpaClElementStatistics the list to convert
+     * @return the clElement statistics list
+     */
+    private List<ClElementStatistics> asClElementStatisticsList(List<JpaClElementStatistics> jpaClElementStatistics) {
+        return jpaClElementStatistics.stream().map(JpaClElementStatistics::toAuthorative).collect(Collectors.toList());
+    }
+
+    /**
+     * Get clElement statistics.
+     *
+     * @param name the name of the participant
+     * @param version version of the participant
+     * @param id of the control loop element
+     * @param timestamp timestamp of the statistics
+     * @return the clElement statistics found
+     * @throws PfModelException on errors getting clElement statistics
+     */
+    public List<ClElementStatistics> getClElementStatistics(final String name, final String version, final String id,
+            final Instant timestamp) throws PfModelException {
+        List<ClElementStatistics> clElementStatistics = new ArrayList<>(1);
+        if (name != null && version != null && timestamp != null && id != null) {
+            clElementStatistics.add(getPfDao()
+                .get(JpaClElementStatistics.class, new PfReferenceTimestampKey(name, version, id, timestamp))
+                .toAuthorative());
+            return clElementStatistics;
+        } else if (name != null) {
+            clElementStatistics.addAll(getFilteredClElementStatistics(name, version, null, null, null,
+                "DESC", 0));
+        } else {
+            clElementStatistics.addAll(asClElementStatisticsList(getPfDao().getAll(JpaClElementStatistics.class)));
+        }
+        return  clElementStatistics;
+    }
+
+    /**
+     * Get filtered clElement statistics.
+     *
+     * @param name the clElement name for the statistics to get
+     * @param startTimeStamp startTimeStamp to filter statistics
+     * @param endTimeStamp endTimeStamp to filter statistics
+     * @param sortOrder sortOrder to query database
+     * @param getRecordNum Total query count from database
+     * @return the clElement statistics found
+     * @throws PfModelException on errors getting policies
+     */
+    public List<ClElementStatistics> getFilteredClElementStatistics(final String name, final String version,
+            final Instant startTimeStamp, final Instant endTimeStamp, Map<String, Object> filterMap,
+            final String sortOrder, final int getRecordNum) {
+        return asClElementStatisticsList(getPfDao().getFiltered(JpaClElementStatistics.class, name, version,
+                startTimeStamp, endTimeStamp, filterMap, sortOrder, getRecordNum));
+    }
+}