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/**
* ============LICENSE_START=======================================================
* org.onap.aai
* ================================================================================
* Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.aai.schemaservice.interceptors.pre;
import org.onap.aai.exceptions.AAIException;
import org.onap.aai.logging.ErrorLogHelper;
import org.onap.aai.schemaservice.interceptors.AAIContainerFilter;
import org.onap.aai.schemaservice.interceptors.AAIHeaderProperties;
import javax.annotation.Priority;
import javax.ws.rs.container.ContainerRequestContext;
import javax.ws.rs.container.ContainerRequestFilter;
import javax.ws.rs.container.PreMatching;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Optional;
import java.util.UUID;
@PreMatching
@Priority(AAIRequestFilterPriority.HEADER_VALIDATION)
public class HeaderValidation extends AAIContainerFilter implements ContainerRequestFilter {
@Override
public void filter(ContainerRequestContext requestContext) throws IOException {
Optional<Response> oResp;
String transId = requestContext.getHeaderString(AAIHeaderProperties.TRANSACTION_ID);
String fromAppId = requestContext.getHeaderString(AAIHeaderProperties.FROM_APP_ID);
List<MediaType> acceptHeaderValues = requestContext.getAcceptableMediaTypes();
oResp = this.validateHeaderValuePresence(fromAppId, "AAI_4009", acceptHeaderValues);
if (oResp.isPresent()) {
requestContext.abortWith(oResp.get());
return;
}
oResp = this.validateHeaderValuePresence(transId, "AAI_4010", acceptHeaderValues);
if (oResp.isPresent()) {
requestContext.abortWith(oResp.get());
return;
}
if (!this.isValidUUID(transId)) {
transId = UUID.randomUUID().toString();
requestContext.getHeaders().get(AAIHeaderProperties.TRANSACTION_ID).clear();
requestContext.getHeaders().add(AAIHeaderProperties.TRANSACTION_ID, transId);
}
}
private Optional<Response> validateHeaderValuePresence(String value, String errorCode,
List<MediaType> acceptHeaderValues) {
Response response = null;
AAIException aaie;
if (value == null) {
aaie = new AAIException(errorCode);
return Optional.of(Response.status(aaie.getErrorObject().getHTTPResponseCode())
.entity(ErrorLogHelper.getRESTAPIErrorResponse(acceptHeaderValues, aaie, new ArrayList<>()))
.build());
}
return Optional.ofNullable(response);
}
}
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