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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* 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 org.apache.tuscany.sca.distributed.management.impl;
import java.util.ArrayList;
import java.util.List;
import org.apache.tuscany.sca.distributed.management.ServiceDiscovery;
import org.osoa.sca.annotations.Scope;
/**
* Stores details of services exposed and retrieves details of remote services
*
* @version $Rev: 552343 $ $Date: 2007-07-01 18:43:40 +0100 (Sun, 01 Jul 2007) $
*/
@Scope("COMPOSITE")
public class ServiceDiscoveryMemoryImpl implements ServiceDiscovery{
List<ServiceEndpoint> serviceEndpoints = new ArrayList<ServiceEndpoint>();
public class ServiceEndpoint {
private String domainUri;
private String nodeUri;
private String serviceName;
private String bindingName;
private String url;
public ServiceEndpoint(String domainUri, String nodeUri, String serviceName, String bindingName, String URL){
this.domainUri = domainUri;
this.nodeUri = nodeUri;
this.serviceName = serviceName;
this.bindingName = bindingName;
this.url = URL;
}
public boolean match(String domainUri, String serviceName, String bindingName) {
// trap the case where the we are trying to map
// ComponentName/Service name with a registered ComponentName - this is OK
// ComponentName with a registered ComponentName/ServiceName - this should fail
boolean serviceNameMatch = false;
if (this.serviceName.equals(serviceName)) {
serviceNameMatch = true;
} else {
int s = serviceName.indexOf('/');
if ((s != -1) &&
(this.serviceName.equals(serviceName.substring(0, s)))){
serviceNameMatch = true;
}
}
return ((this.domainUri.equals(domainUri)) &&
(serviceNameMatch) &&
(this.bindingName.equals(bindingName)));
}
public String getUrl() {
return url;
}
@Override
public String toString (){
return "[" +
domainUri + " " +
nodeUri + " " +
serviceName + " " +
bindingName + " " +
url +
"]";
}
}
/**
* Accepts information about a service endpoint and holds onto it
*
* @param domainUri the string uri for the distributed domain
* @param nodeUri the string uri for the current node
* @param serviceName the name of the service that is exposed and the provided endpoint
* @param bindingName the remote binding that is providing the endpoint
* @param url the enpoint url
*/
public String registerServiceEndpoint(String domainUri, String nodeUri, String serviceName, String bindingName, String URL){
// if the service name ends in a "/" remove it
String modifiedServiceName = null;
if ( serviceName.endsWith("/") ) {
modifiedServiceName = serviceName.substring(0, serviceName.length() - 1);
} else {
modifiedServiceName = serviceName;
}
ServiceEndpoint serviceEndpoint = new ServiceEndpoint (domainUri, nodeUri, modifiedServiceName, bindingName, URL);
serviceEndpoints.add(serviceEndpoint);
System.err.println("Registering service: " + serviceEndpoint.toString());
return "";
}
/**
* Locates information about a service endpoint
*
* @param domainUri the string uri for the distributed domain
* @param serviceName the name of the service that is exposed and the provided endpoint
* @param bindingName the remote binding that we want to find an endpoint for
* @return url the endpoint url
*/
public String findServiceEndpoint(String domainUri, String serviceName, String bindingName){
System.err.println("Finding service: [" +
domainUri + " " +
serviceName + " " +
bindingName +
"]");
String url = "";
for(ServiceEndpoint serviceEndpoint : serviceEndpoints){
if ( serviceEndpoint.match(domainUri, serviceName, bindingName)){
url = serviceEndpoint.getUrl();
System.err.println("Matching service url: " + url);
}
}
return url;
}
}
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