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/**
* Copyright (C) 2019 Bonitasoft S.A.
* Bonitasoft, 32 rue Gustave Eiffel - 38000 Grenoble
* This library is free software; you can redistribute it and/or modify it under the terms
* of the GNU Lesser General Public License as published by the Free Software Foundation
* version 2.1 of the License.
* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Lesser General Public License for more details.
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
* Floor, Boston, MA 02110-1301, USA.
**/
package org.bonitasoft.engine.execution;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import org.bonitasoft.engine.bpm.contract.validation.ContractValidator;
import org.bonitasoft.engine.bpm.contract.validation.ContractValidatorFactory;
import org.bonitasoft.engine.commons.exceptions.SBonitaException;
import org.bonitasoft.engine.core.process.definition.ProcessDefinitionService;
import org.bonitasoft.engine.core.process.definition.model.SContractDefinition;
import org.bonitasoft.engine.core.process.definition.model.SFlowNodeDefinition;
import org.bonitasoft.engine.core.process.definition.model.SFlowNodeType;
import org.bonitasoft.engine.core.process.definition.model.SProcessDefinition;
import org.bonitasoft.engine.core.process.definition.model.SUserTaskDefinition;
import org.bonitasoft.engine.core.process.instance.api.exceptions.SContractViolationException;
import org.bonitasoft.engine.expression.ExpressionService;
/**
* @author Elias Ricken de Medeiros
*/
public class AdvancedStartProcessValidator {
private final ProcessDefinitionService processDefinitionService;
private final long processDefinitionId;
private ExpressionService expressionService;
public AdvancedStartProcessValidator(ProcessDefinitionService processDefinitionService, long processDefinitionId,
ExpressionService expressionService) {
this.processDefinitionService = processDefinitionService;
this.processDefinitionId = processDefinitionId;
this.expressionService = expressionService;
}
public List validate(List flowNodeNames, Map processContractInputs)
throws SBonitaException {
List problems = new ArrayList<>();
if (flowNodeNames.isEmpty()) {
problems.add("The list of activity names to start cannot be empty!");
}
List foundFlowNodes = new ArrayList<>(flowNodeNames.size());
SProcessDefinition processDefinition = processDefinitionService.getProcessDefinition(processDefinitionId);
problems.addAll(checkFlowNodesAreSupported(flowNodeNames, foundFlowNodes, processDefinition));
problems.addAll(checkForNotFoundFlowNodes(flowNodeNames, foundFlowNodes, processDefinition));
if (!problems.isEmpty()) {
//check contract only if flow nodes are ok
return problems;
}
problems.addAll(checkProcessContract(processContractInputs, processDefinition));
return problems;
}
private List checkProcessContract(Map processContractInputs,
SProcessDefinition processDefinition) {
return validateContract(processContractInputs, processDefinition.getContract(), processDefinition.getName());
}
private List validateContract(Map inputs, SContractDefinition contract,
String element) {
if (contract == null) {
return Collections.emptyList();
}
final ContractValidator validator = new ContractValidatorFactory().createContractValidator(expressionService);
try {
validator.validate(processDefinitionId, contract, inputs);
} catch (SContractViolationException e) {
return e.getExplanations().isEmpty() ? Collections.singletonList(e.getSimpleMessage() + " on " + element)
: appendElement(e, element);
}
return Collections.emptyList();
}
private List appendElement(SContractViolationException e, String element) {
ArrayList strings = new ArrayList<>();
for (String explanation : e.getExplanations()) {
strings.add(explanation + " on " + element);
}
return strings;
}
private List checkFlowNodesContracts(List flowNodeNames,
Map> activitiesContractInputs,
SProcessDefinition processDefinition) {
List problems = new ArrayList<>();
for (String flowNodeName : flowNodeNames) {
SFlowNodeDefinition flowNode = processDefinition.getProcessContainer().getFlowNode(flowNodeName);
if (flowNode instanceof SUserTaskDefinition && ((SUserTaskDefinition) flowNode).getContract() != null) {
problems.addAll(validateContract(
activitiesContractInputs == null ? Collections. emptyMap()
: activitiesContractInputs.get(flowNodeName),
((SUserTaskDefinition) flowNode).getContract(), flowNodeName));
}
}
return problems;
}
private List checkFlowNodesAreSupported(List flowNodeNames, List foundFlowNodes,
SProcessDefinition processDefinition) {
List problems = new ArrayList<>();
for (SFlowNodeDefinition flowNode : processDefinition.getProcessContainer().getFlowNodes()) {
boolean invalidType = SFlowNodeType.BOUNDARY_EVENT.equals(flowNode.getType())
|| SFlowNodeType.SUB_PROCESS.equals(flowNode.getType())
|| SFlowNodeType.GATEWAY.equals(flowNode.getType());
if (flowNodeNames.contains(flowNode.getName())) {
foundFlowNodes.add(flowNode.getName());
if (invalidType) {
problems.add(buildInvalidTypeErrorMessage(processDefinition, flowNode));
}
}
}
return problems;
}
private List checkForNotFoundFlowNodes(List flowNodeNames, List foundFlowNodes,
SProcessDefinition processDefinition) {
List problems = new ArrayList<>();
for (String flowNodeName : flowNodeNames) {
if (!foundFlowNodes.contains(flowNodeName)) {
problems.add(buildFlowNodeNotFoundErroMessage(processDefinition, flowNodeName));
}
}
return problems;
}
private String buildInvalidTypeErrorMessage(SProcessDefinition processDefinition, SFlowNodeDefinition flowNode) {
return "'" +
flowNode.getName() +
"' is not a valid start point for the process " +
buildProcessContext(processDefinition) +
" You cannot start a process from a gateway, a boundary event or an event sub-process";
}
private String buildFlowNodeNotFoundErroMessage(SProcessDefinition processDefinition, String flowNodeName) {
return "No flownode named '" +
flowNodeName +
"' was found in the process" +
buildProcessContext(processDefinition);
}
private String buildProcessContext(SProcessDefinition processDefinition) {
return ".";
}
}
