/**
* Copyright © 2012 Alcatel-Lucent.
*
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership.
* Licensed to you 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 com.alu.e3.gateway.common.camel.processor;
import java.util.List;
import org.apache.camel.Exchange;
import org.apache.camel.Processor;
import com.alu.e3.common.E3Constant;
import com.alu.e3.common.InvalidIDException;
import com.alu.e3.common.camel.AuthIdentity;
import com.alu.e3.common.camel.ExchangeConstantKeys;
import com.alu.e3.common.osgi.api.IDataManager;
import com.alu.e3.data.model.Auth;
import com.alu.e3.data.model.CallDescriptor;
import com.alu.e3.gateway.common.camel.exception.GatewayException;
import com.alu.e3.gateway.common.camel.exception.GatewayExceptionCode;
public class SubscriberIDExtractor implements Processor {
protected IDataManager dataManager;
public void setDataManager(IDataManager dataManager) {
this.dataManager = dataManager;
}
@Override
public void process(Exchange exchange) throws Exception {
// Get current AuthIdentity
AuthIdentity authIdentity = exchange.getProperty( ExchangeConstantKeys.E3_AUTH_IDENTITY.toString(), AuthIdentity.class);
// extracts subscriber id and checks authorization
String subscriberId = extractSubscriberId(exchange);
if (null == subscriberId) return ;
List<CallDescriptor> callDescriptors = checkSubscriberIdAuth(subscriberId, authIdentity);// throws if failed
// merge call descriptor
mergeCallDescriptor(callDescriptors, authIdentity);
}
protected String extractSubscriberId(Exchange exchange) throws GatewayException {
String subscriberId = exchange.getIn().getHeader(E3Constant.SUBSCRIBER_ID_HEADER_NAME, String.class);
if (subscriberId == null || subscriberId.isEmpty()) return null;
String[] parts = subscriberId.split("\\|");
if (parts.length != 2 || parts[1].isEmpty()) return null;
return parts[1];
}
protected List<CallDescriptor> checkSubscriberIdAuth(String subscriberId, AuthIdentity authIdentity) throws GatewayException {
// Get subscriber matching CallDescriptors
Auth auth;
try {
auth = dataManager.getAuthById(subscriberId);
} catch (InvalidIDException e) {
throw new GatewayException(GatewayExceptionCode.AUTHORIZATION, e.getMessage() );
}
if (auth == null || !auth.getStatus().isActive()) {
throw new GatewayException(GatewayExceptionCode.AUTHORIZATION, "Authorization status is invalid");
}
return dataManager.getMatchingPolicies(authIdentity.getApi(), auth);
}
protected void mergeCallDescriptor(List<CallDescriptor> callDescriptors, AuthIdentity authIdentity) {
if ( null == callDescriptors)return; // no specific descriptor
// Merge lists of CallDescriptors on the current AuthIdentity
List<CallDescriptor> descriptors = authIdentity.getCallDescriptors();
for (CallDescriptor callDescriptor : callDescriptors) {
if (!descriptors.contains(callDescriptor)) {
descriptors.add(callDescriptor);
}
}
}
}