001/* 002 * (C) Copyright 2015 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * François Maturel 018 */ 019 020package org.nuxeo.ecm.platform.ui.web.keycloak; 021 022import java.io.IOException; 023import java.io.InputStream; 024import java.lang.reflect.Constructor; 025import java.lang.reflect.InvocationTargetException; 026import java.lang.reflect.Method; 027 028import com.fasterxml.jackson.databind.ObjectMapper; 029 030import org.keycloak.adapters.KeycloakDeployment; 031import org.keycloak.adapters.KeycloakDeploymentBuilder; 032import org.keycloak.representations.adapters.config.AdapterConfig; 033import org.keycloak.util.SystemPropertiesJsonParserFactory; 034 035/** 036 * This class is developed to overcome a Jackson version problem between Nuxeo and Keycloak.<br> 037 * Nuxeo uses Jackson version 1.8.x where Keycloak uses 1.9.x<br> 038 * Sadly the {@link ObjectMapper#setSerializationInclusion} method is not in 1.8.x<br> 039 * Then {@link KeycloakNuxeoDeployment} is the same class as {@link KeycloakDeploymentBuilder}, rewriting static method 040 * {@link KeycloakDeploymentBuilder#loadAdapterConfig} to avoid the use of 041 * {@link ObjectMapper#setSerializationInclusion} 042 * 043 * @since 7.4 044 */ 045public class KeycloakNuxeoDeployment { 046 047 /** 048 * Invokes KeycloakDeploymentBuilder.internalBuild with reflection to avoid rewriting source code 049 * 050 * @param is the configuration file {@link InputStream} 051 * @return the {@link KeycloakDeployment} corresponding to the configuration file 052 */ 053 public static KeycloakDeployment build(InputStream is) { 054 AdapterConfig adapterConfig = loadAdapterConfig(is); 055 056 try { 057 Constructor<KeycloakDeploymentBuilder> constructor = KeycloakDeploymentBuilder.class.getDeclaredConstructor(); 058 constructor.setAccessible(true); 059 KeycloakDeploymentBuilder builder = constructor.newInstance(); 060 061 Method method = KeycloakDeploymentBuilder.class.getDeclaredMethod("internalBuild", AdapterConfig.class); 062 method.setAccessible(true); 063 return (KeycloakDeployment) method.invoke(builder, adapterConfig); 064 } catch (InvocationTargetException | InstantiationException | IllegalAccessException | NoSuchMethodException e) { 065 throw new RuntimeException(e); 066 } 067 } 068 069 public static AdapterConfig loadAdapterConfig(InputStream is) { 070 ObjectMapper mapper = new ObjectMapper(new SystemPropertiesJsonParserFactory()); 071 AdapterConfig adapterConfig; 072 try { 073 adapterConfig = mapper.readValue(is, AdapterConfig.class); 074 } catch (IOException e) { 075 throw new RuntimeException(e); 076 } 077 return adapterConfig; 078 } 079 080}