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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2023 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.so.cnfm.lcm.bpmn.flows.service;
import static org.onap.so.cnfm.lcm.bpmn.flows.CamundaVariableNameConstants.AS_WORKFLOW_PROCESSING_EXCEPTION_PARAM_NAME;
import static org.onap.so.cnfm.lcm.bpmn.flows.CamundaVariableNameConstants.CREATE_AS_RESPONSE_PARAM_NAME;
import static org.onap.so.cnfm.lcm.bpmn.flows.Constants.TENANT_ID;
import static org.slf4j.LoggerFactory.getLogger;
import java.util.Optional;
import org.camunda.bpm.engine.HistoryService;
import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.history.HistoricVariableInstance;
import org.onap.so.cnfm.lcm.model.AsInstance;
import org.onap.so.cnfm.lcm.model.ErrorDetails;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.google.common.base.Strings;
/**
* @author Waqas Ikram (waqas.ikram@est.tech)
*
*/
@Service
public class WorkflowQueryService {
private static final Logger logger = getLogger(WorkflowQueryService.class);
private static final String PROCESS_INSTANCE_ID_NOT_FOUND_ERROR_MESSAGE =
"Unable to find {} variable using processInstanceId: {}";
private final HistoryService camundaHistoryService;
@Autowired
public WorkflowQueryService(final HistoryService camundaHistoryService) {
this.camundaHistoryService = camundaHistoryService;
}
public Optional<AsInstance> getCreateNsResponse(final String processInstanceId) {
try {
if (Strings.isNullOrEmpty(processInstanceId)) {
logger.error("Invalid processInstanceId: {}", processInstanceId);
return Optional.empty();
}
final HistoricVariableInstance historicVariableInstance =
getVariable(processInstanceId, CREATE_AS_RESPONSE_PARAM_NAME);
if (historicVariableInstance != null) {
logger.info("Found HistoricVariableInstance : {}", historicVariableInstance);
final Object variableValue = historicVariableInstance.getValue();
if (variableValue instanceof AsInstance) {
return Optional.ofNullable((AsInstance) variableValue);
}
logger.error("Unknown CreateAsResponse object type {} received value: {}",
historicVariableInstance.getValue() != null ? variableValue.getClass() : null, variableValue);
}
} catch (final ProcessEngineException processEngineException) {
logger.error(PROCESS_INSTANCE_ID_NOT_FOUND_ERROR_MESSAGE, CREATE_AS_RESPONSE_PARAM_NAME, processInstanceId,
processEngineException);
}
logger.error(PROCESS_INSTANCE_ID_NOT_FOUND_ERROR_MESSAGE, CREATE_AS_RESPONSE_PARAM_NAME, processInstanceId);
return Optional.empty();
}
public Optional<ErrorDetails> getErrorDetails(final String processInstanceId) {
try {
final HistoricVariableInstance historicVariableInstance =
getVariable(processInstanceId, AS_WORKFLOW_PROCESSING_EXCEPTION_PARAM_NAME);
logger.info("Found HistoricVariableInstance : {}", historicVariableInstance);
if (historicVariableInstance != null) {
final Object variableValue = historicVariableInstance.getValue();
if (variableValue instanceof ErrorDetails) {
return Optional.ofNullable((ErrorDetails) variableValue);
}
logger.error("Unknown ErrorContents object type {} received value: {}",
historicVariableInstance.getValue() != null ? variableValue.getClass() : null, variableValue);
}
logger.error("Unable to retrieve HistoricVariableInstance value was null");
} catch (final ProcessEngineException processEngineException) {
logger.error(PROCESS_INSTANCE_ID_NOT_FOUND_ERROR_MESSAGE, AS_WORKFLOW_PROCESSING_EXCEPTION_PARAM_NAME,
processInstanceId, processEngineException);
}
return Optional.empty();
}
private HistoricVariableInstance getVariable(final String processInstanceId, final String name) {
return camundaHistoryService.createHistoricVariableInstanceQuery().processInstanceId(processInstanceId)
.variableName(name).tenantIdIn(TENANT_ID).singleResult();
}
}
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