org.camunda.bpm.engine.rest.impl.MessageRestServiceImpl Maven / Gradle / Ivy
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* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.rest.impl;
import java.util.Map;
import java.util.Map.Entry;
import javax.ws.rs.core.Response.Status;
import org.camunda.bpm.engine.MismatchingMessageCorrelationException;
import org.camunda.bpm.engine.RuntimeService;
import org.camunda.bpm.engine.rest.MessageRestService;
import org.camunda.bpm.engine.rest.dto.VariableValueDto;
import org.camunda.bpm.engine.rest.dto.message.CorrelationMessageDto;
import org.camunda.bpm.engine.rest.exception.InvalidRequestException;
import org.camunda.bpm.engine.rest.exception.RestException;
import org.camunda.bpm.engine.runtime.MessageCorrelationBuilder;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.ArrayList;
import java.util.List;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.camunda.bpm.engine.rest.dto.message.MessageCorrelationResultDto;
import org.camunda.bpm.engine.rest.dto.message.MessageCorrelationResultWithVariableDto;
import org.camunda.bpm.engine.runtime.MessageCorrelationResult;
import org.camunda.bpm.engine.runtime.MessageCorrelationResultWithVariables;
public class MessageRestServiceImpl extends AbstractRestProcessEngineAware implements MessageRestService {
public MessageRestServiceImpl(String engineName, ObjectMapper objectMapper) {
super(engineName, objectMapper);
}
@Override
public Response deliverMessage(CorrelationMessageDto messageDto) {
if (messageDto.getMessageName() == null) {
throw new InvalidRequestException(Status.BAD_REQUEST, "No message name supplied");
}
if (messageDto.getTenantId() != null && messageDto.isWithoutTenantId()) {
throw new InvalidRequestException(Status.BAD_REQUEST, "Parameter 'tenantId' cannot be used together with parameter 'withoutTenantId'.");
}
boolean variablesInResultEnabled = messageDto.isVariablesInResultEnabled();
if (!messageDto.isResultEnabled() && variablesInResultEnabled) {
throw new InvalidRequestException(Status.BAD_REQUEST, "Parameter 'variablesInResultEnabled' cannot be used without 'resultEnabled' set to true.");
}
List resultDtos = new ArrayList<>();
try {
MessageCorrelationBuilder correlation = createMessageCorrelationBuilder(messageDto);
if (!variablesInResultEnabled) {
resultDtos.addAll(correlate(messageDto, correlation));
} else {
resultDtos.addAll(correlateWithVariablesEnabled(messageDto, correlation));
}
} catch (RestException e) {
String errorMessage = String.format("Cannot deliver message: %s", e.getMessage());
throw new InvalidRequestException(e.getStatus(), e, errorMessage);
} catch (MismatchingMessageCorrelationException e) {
throw new RestException(Status.BAD_REQUEST, e);
}
return createResponse(resultDtos, messageDto);
}
protected List correlate(CorrelationMessageDto messageDto, MessageCorrelationBuilder correlation) {
List resultDtos = new ArrayList<>();
if (!messageDto.isAll()) {
MessageCorrelationResult result = correlation.correlateWithResult();
resultDtos.add(MessageCorrelationResultDto.fromMessageCorrelationResult(result));
} else {
List results = correlation.correlateAllWithResult();
for (MessageCorrelationResult result : results) {
resultDtos.add(MessageCorrelationResultDto.fromMessageCorrelationResult(result));
}
}
return resultDtos;
}
protected List correlateWithVariablesEnabled(CorrelationMessageDto messageDto, MessageCorrelationBuilder correlation) {
List resultDtos = new ArrayList<>();
if (!messageDto.isAll()) {
MessageCorrelationResultWithVariables result = correlation.correlateWithResultAndVariables(false);
resultDtos.add(MessageCorrelationResultWithVariableDto.fromMessageCorrelationResultWithVariables(result));
} else {
List results = correlation.correlateAllWithResultAndVariables(false);
for (MessageCorrelationResultWithVariables result : results) {
resultDtos.add(MessageCorrelationResultWithVariableDto.fromMessageCorrelationResultWithVariables(result));
}
}
return resultDtos;
}
protected Response createResponse(List resultDtos, CorrelationMessageDto messageDto) {
Response.ResponseBuilder response = Response.noContent();
if (messageDto.isResultEnabled()) {
response = Response.ok(resultDtos, MediaType.APPLICATION_JSON);
}
return response.build();
}
protected MessageCorrelationBuilder createMessageCorrelationBuilder(CorrelationMessageDto messageDto) {
RuntimeService runtimeService = processEngine.getRuntimeService();
ObjectMapper objectMapper = getObjectMapper();
Map correlationKeys = VariableValueDto.toMap(messageDto.getCorrelationKeys(), processEngine, objectMapper);
Map localCorrelationKeys = VariableValueDto.toMap(messageDto.getLocalCorrelationKeys(), processEngine, objectMapper);
Map processVariables = VariableValueDto.toMap(messageDto.getProcessVariables(), processEngine, objectMapper);
Map processVariablesLocal = VariableValueDto.toMap(messageDto.getProcessVariablesLocal(), processEngine, objectMapper);
MessageCorrelationBuilder builder = runtimeService
.createMessageCorrelation(messageDto.getMessageName());
if (processVariables != null) {
builder.setVariables(processVariables);
}
if (processVariablesLocal != null) {
builder.setVariablesLocal(processVariablesLocal);
}
if (messageDto.getBusinessKey() != null) {
builder.processInstanceBusinessKey(messageDto.getBusinessKey());
}
if (correlationKeys != null && !correlationKeys.isEmpty()) {
for (Entry correlationKey : correlationKeys.entrySet()) {
String name = correlationKey.getKey();
Object value = correlationKey.getValue();
builder.processInstanceVariableEquals(name, value);
}
}
if (localCorrelationKeys != null && !localCorrelationKeys.isEmpty()) {
for (Entry correlationKey : localCorrelationKeys.entrySet()) {
String name = correlationKey.getKey();
Object value = correlationKey.getValue();
builder.localVariableEquals(name, value);
}
}
if (messageDto.getTenantId() != null) {
builder.tenantId(messageDto.getTenantId());
} else if (messageDto.isWithoutTenantId()) {
builder.withoutTenantId();
}
String processInstanceId = messageDto.getProcessInstanceId();
if (processInstanceId != null) {
builder.processInstanceId(processInstanceId);
}
return builder;
}
}