Feat/148 ubi refactor policy component

Closes #148 (closed)

src/policy/src/main/java/org/etsi/tfs/policy/policy/AddPolicyDeviceImpl.java

+/*
+* Copyright 2022-2023 ETSI TeraFlowSDN - TFS OSG (https://tfs.etsi.org/)
+*
+* 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.
+*/
+
+package org.etsi.tfs.policy.policy;
+
+import static org.etsi.tfs.policy.common.ApplicationProperties.INVALID_MESSAGE;
+import static org.etsi.tfs.policy.common.ApplicationProperties.VALIDATED_POLICYRULE_STATE;
+
+import io.smallrye.mutiny.Uni;
+import io.smallrye.mutiny.groups.UniJoin;
+import jakarta.enterprise.context.ApplicationScoped;
+import jakarta.inject.Inject;
+import java.util.List;
+import org.etsi.tfs.policy.context.ContextService;
+import org.etsi.tfs.policy.exception.ExternalServiceFailureException;
+import org.etsi.tfs.policy.policy.model.PolicyRule;
+import org.etsi.tfs.policy.policy.model.PolicyRuleBasic;
+import org.etsi.tfs.policy.policy.model.PolicyRuleDevice;
+import org.etsi.tfs.policy.policy.model.PolicyRuleState;
+import org.etsi.tfs.policy.policy.model.PolicyRuleStateEnum;
+import org.etsi.tfs.policy.policy.model.PolicyRuleTypeDevice;
+import org.etsi.tfs.policy.policy.service.PolicyRuleConditionValidator;
+
+@ApplicationScoped
+public class AddPolicyDeviceImpl {
+
+    @Inject private PolicyRuleConditionValidator policyRuleConditionValidator;
+
+    @Inject private CommonPolicyServiceImpl commonPolicyServiceImpl;
+    @Inject private CommonAlarmService commonAlarmService;
+
+    @Inject private ContextService contextService;
+
+    public Uni<List<Boolean>> returnInvalidDeviceIds(List<String> deviceIds) {
+        UniJoin.Builder<Boolean> builder = Uni.join().builder();
+        for (String deviceId : deviceIds) {
+            final var validatedDeviceId = policyRuleConditionValidator.isDeviceIdValid(deviceId);
+            builder.add(validatedDeviceId);
+        }
+        return builder.joinAll().andFailFast();
+    }
+
+    public Uni<PolicyRuleState> areDeviceOnContext(
+            List<Boolean> areDevices,
+            PolicyRuleDevice policyRuleDevice,
+            PolicyRuleBasic policyRuleBasic) {
+        if (areDevices.contains(false)) {
+            var policyRuleState =
+                    new PolicyRuleState(
+                            PolicyRuleStateEnum.POLICY_FAILED,
+                            String.format(
+                                    INVALID_MESSAGE, policyRuleDevice.getPolicyRuleBasic().getPolicyRuleId()));
+
+            return Uni.createFrom().item(policyRuleState);
+        }
+
+        final var policyRuleTypeDevice = new PolicyRuleTypeDevice(policyRuleDevice);
+        final var policyRule = new PolicyRule(policyRuleTypeDevice);
+
+        final var alarmDescriptorList = commonPolicyServiceImpl.createAlarmDescriptorList(policyRule);
+        if (alarmDescriptorList.isEmpty()) {
+            var policyRuleState =
+                    new PolicyRuleState(
+                            PolicyRuleStateEnum.POLICY_FAILED,
+                            String.format(
+                                    "Invalid PolicyRuleConditions in PolicyRule with ID: %s",
+                                    policyRuleBasic.getPolicyRuleId()));
+            return Uni.createFrom().item(policyRuleState);
+        }
+
+        return contextService
+                .setPolicyRule(policyRule)
+                .onFailure()
+                .transform(failure -> new ExternalServiceFailureException(failure.getMessage()))
+                .onItem()
+                .transform(
+                        policyId -> {
+                            commonAlarmService.startMonitoringBasedOnAlarmDescriptors(
+                                    policyId, policyRuleDevice, alarmDescriptorList);
+                            return VALIDATED_POLICYRULE_STATE;
+                        });
+    }
+}