| /* |
| * 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.knox.gateway.identityasserter.hadoop.groups.filter; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.knox.gateway.deploy.DeploymentContext; |
| import org.apache.knox.gateway.descriptor.FilterParamDescriptor; |
| import org.apache.knox.gateway.descriptor.ResourceDescriptor; |
| import org.apache.knox.gateway.identityasserter.common.filter.AbstractIdentityAsserterDeploymentContributor; |
| import org.apache.knox.gateway.topology.Provider; |
| import org.apache.knox.gateway.topology.Service; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| import java.util.Locale; |
| import java.util.Map; |
| import java.util.Map.Entry; |
| |
| /** |
| * A provider deployment contributor for looking up authenticated user groups as |
| * seen by Hadoop implementation. |
| * |
| * @since 0.11.0 |
| */ |
| |
| public class HadoopGroupProviderDeploymentContributor |
| extends AbstractIdentityAsserterDeploymentContributor { |
| |
| /** |
| * Name of our <b>identity-assertion</b> provider. |
| */ |
| public static final String HADOOP_GROUP_PROVIDER = "HadoopGroupProvider"; |
| |
| /* create an instance */ |
| public HadoopGroupProviderDeploymentContributor() { |
| super(); |
| } |
| |
| @Override |
| public String getName() { |
| return HADOOP_GROUP_PROVIDER; |
| } |
| |
| @Override |
| protected String getFilterClassname() { |
| return HadoopGroupProviderFilter.class.getName(); |
| } |
| |
| @Override |
| public void contributeFilter( DeploymentContext context, Provider provider, Service service, |
| ResourceDescriptor resource, List<FilterParamDescriptor> params ) { |
| Map<String, String> p = provider.getParams(); |
| String prefix = p.get("CENTRAL_GROUP_CONFIG_PREFIX"); |
| if (prefix != null && !prefix.isEmpty()) { |
| if (!prefix.endsWith(".")) { |
| prefix += "."; |
| } |
| Map<String, String> groupMappingParams = |
| ((Configuration)context.getGatewayConfig()).getPropsWithPrefix(prefix); |
| if (groupMappingParams != null) { |
| params = createParamList(resource, params, groupMappingParams); |
| } |
| } |
| |
| if (params == null || params.isEmpty()) { |
| params = buildFilterInitParms(provider, resource, params); |
| } |
| resource.addFilter().name(getName()).role(getRole()).impl(getFilterClassname()).params(params); |
| } |
| |
| @Override |
| public List<FilterParamDescriptor> buildFilterInitParms(Provider provider, |
| ResourceDescriptor resource, List<FilterParamDescriptor> params) { |
| // blindly add all the provider params as filter init params |
| if (params == null) { |
| params = new ArrayList<>(); |
| } |
| Map<String, String> providerParams = provider.getParams(); |
| return createParamList(resource, params, providerParams); |
| } |
| |
| private List<FilterParamDescriptor> createParamList(ResourceDescriptor resource, List<FilterParamDescriptor> params, |
| Map<String, String> providerParams) { |
| if (params == null) { |
| params = new ArrayList<>(); |
| } |
| for(Entry<String, String> entry : providerParams.entrySet()) { |
| params.add( resource.createFilterParam().name(entry.getKey().toLowerCase(Locale.ROOT)).value(entry.getValue())); |
| } |
| return params; |
| } |
| } |