/**
* 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.hadoop.gateway.deploy.impl;
import org.apache.hadoop.gateway.deploy.DeploymentContext;
import org.apache.hadoop.gateway.deploy.ProviderDeploymentContributorBase;
import org.apache.hadoop.gateway.descriptor.FilterDescriptor;
import org.apache.hadoop.gateway.descriptor.FilterParamDescriptor;
import org.apache.hadoop.gateway.descriptor.ResourceDescriptor;
import org.apache.hadoop.gateway.topology.Provider;
import org.apache.hadoop.gateway.topology.Service;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
public class GenericProviderDeploymentContributor extends ProviderDeploymentContributorBase {
public static String FILTER_PARAM = "filter";
@Override
public String getRole() {
return "*";
}
@Override
public String getName() {
return "generic";
}
@Override
public void contributeFilter(
DeploymentContext context,
Provider provider,
Service service,
ResourceDescriptor resource,
List<FilterParamDescriptor> params ) {
String filterClassName = getFilterClassName( provider.getParams() );
if( filterClassName != null ) {
FilterDescriptor filter = resource.addFilter();
filter.name( getName() );
filter.role( provider.getRole() );
filter.impl( filterClassName );
filter.params( getFilterInitParams( filter, provider.getParams(), params ) );
}
}
private String getFilterClassName( Map<String,String> params ) {
String filterClassName = null;
if( params != null ) {
filterClassName = params.get( FILTER_PARAM );
}
if( filterClassName == null ) {
throw new IllegalArgumentException( FILTER_PARAM + "==null" );
}
return filterClassName;
}
private List<FilterParamDescriptor> getFilterInitParams(
FilterDescriptor filter,
Map<String,String> providerParams,
List<FilterParamDescriptor> filterParams ) {
List<FilterParamDescriptor> aggregateParams = new ArrayList<FilterParamDescriptor>();
if( providerParams != null ) {
for( Map.Entry<String,String> param : providerParams.entrySet() ) {
String name = param.getKey();
if( !FILTER_PARAM.equalsIgnoreCase( name ) ) {
aggregateParams.add( filter.createParam().name( name ).value( param.getValue() ) );
}
}
}
if( filterParams != null ) {
aggregateParams.addAll( filterParams );
}
return aggregateParams;
}
}