/*
* 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.synapse.commons.datasource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.commons.SynapseCommonsException;
import org.wso2.securevault.SecretResolver;
import org.wso2.securevault.SecretResolverFactory;
import org.wso2.securevault.secret.SecretInformation;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Properties;
/**
* Keep and maintain <code>DataSourceInformation</code>
*/
@SuppressWarnings("unused")
public class DataSourceInformationRepository {
private static final Log log = LogFactory.getLog(DataSourceInformationRepository.class);
private final Map<String, DataSourceInformation> dataSourceInformationMap =
new HashMap<String, DataSourceInformation>();
private DataSourceInformationRepositoryListener listener;
/**
* The global secret resolver of the datasources
*/
private SecretResolver secretResolver;
/**
* Configuring DataSourceInformationRepository
*
* @param configurationProperties properties to be used for configure
*/
public void configure(Properties configurationProperties) {
if (listener != null) {
listener.reConfigure(configurationProperties);
}
secretResolver = SecretResolverFactory.create(configurationProperties,
DataSourceConstants.PROP_SYNAPSE_PREFIX_DS);
}
/**
* Adding a DataSourceInformation instance
*
* @param dataSourceInformation <code>DataSourceInformation</code> instance
*/
public void addDataSourceInformation(DataSourceInformation dataSourceInformation) {
if (dataSourceInformation == null) {
throw new SynapseCommonsException("DataSource information is null", log);
}
// Sets the global secret resolver
SecretInformation secretInformation = dataSourceInformation.getSecretInformation();
if (secretInformation != null) {
secretInformation.setGlobalSecretResolver(secretResolver);
}
dataSourceInformationMap.put(dataSourceInformation.getAlias(), dataSourceInformation);
if (assertListerNotNull()) {
listener.addDataSourceInformation(dataSourceInformation);
}
}
/**
* Get an existing <code>DataSourceInformation</code> instance for the given name
*
* @param name Name of the DataSourceInformation to be returned
* @return DataSourceInformation instance if the are any with given name, otherwise
* , returns null
*/
public DataSourceInformation getDataSourceInformation(String name) {
if (name == null || "".equals(name)) {
throw new SynapseCommonsException("Name of the datasource information instance to be " +
"returned is null", log);
}
return dataSourceInformationMap.get(name);
}
/**
* Removing a DataSourceInformation instance by name
*
* @param name Name of the DataSourceInformation to be removed
* @return removed DataSourceInformation instance
*/
public DataSourceInformation removeDataSourceInformation(String name) {
if (name == null || "".equals(name)) {
throw new SynapseCommonsException("Name of the datasource information instance to be" +
" removed is null", log);
}
DataSourceInformation information = dataSourceInformationMap.remove(name);
if (information == null) {
throw new SynapseCommonsException("There is no datasource information instance" +
" for given name :" + name, log);
}
if (assertListerNotNull()) {
listener.removeDataSourceInformation(information);
}
return information;
}
/**
* Returns all <code>DataSourceInformation</code>s in the repository
*
* @return List of <code>DataSourceInformation</code>s
*/
public Iterator<DataSourceInformation> getAllDataSourceInformation() {
return dataSourceInformationMap.values().iterator();
}
/**
* Sets a <code>DataSourceInformationRepositoryListener</code> instance
*
* @param listener <code>DataSourceInformationRepositoryListener</code> instance
*/
public void setRepositoryListener(DataSourceInformationRepositoryListener listener) {
if (listener == null) {
throw new SynapseCommonsException("Provided DataSourceInformationRepositoryListener " +
"instance is null", log);
}
if (this.listener != null) {
throw new SynapseCommonsException("There is already a DataSourceInformationRepositoryListener " +
"associated with 'DataSourceInformationRepository", log);
}
this.listener = listener;
}
/**
* Remove existing <code>DataSourceInformationRepositoryListener</code>
*/
public void removeRepositoryListener() {
this.listener = null;
}
/**
* Gets the existing <code>DataSourceInformationRepositoryListener</code>
*
* @return DataSourceInformationRepositoryListener that have been registered
*/
public DataSourceInformationRepositoryListener getRepositoryListener() {
return this.listener;
}
private boolean assertListerNotNull() {
if (listener == null) {
if (log.isDebugEnabled()) {
log.debug("Cannot find a DataSourceInformationRepositoryListener.");
}
return false;
}
if (log.isDebugEnabled()) {
log.debug("Using DataSourceInformationRepositoryListener as :" + listener);
}
return true;
}
}