| /* |
| * 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.tamaya.spisupport; |
| |
| import org.apache.tamaya.Configuration; |
| import org.apache.tamaya.TypeLiteral; |
| import org.apache.tamaya.spi.ConfigurationBuilder; |
| import org.apache.tamaya.spi.ConfigurationContext; |
| import org.apache.tamaya.spi.PropertyConverter; |
| import org.apache.tamaya.spi.PropertyFilter; |
| import org.apache.tamaya.spi.PropertySource; |
| import org.apache.tamaya.spi.PropertySourceProvider; |
| import org.apache.tamaya.spi.ServiceContext; |
| import org.apache.tamaya.spi.ServiceContextManager; |
| import org.apache.tamaya.spisupport.propertysource.CLIPropertySource; |
| import org.apache.tamaya.spisupport.propertysource.EnvironmentPropertySource; |
| import org.apache.tamaya.spisupport.propertysource.JavaConfigurationPropertySource; |
| import org.apache.tamaya.spisupport.propertysource.SystemPropertySource; |
| |
| import java.lang.reflect.ParameterizedType; |
| import java.lang.reflect.Type; |
| import java.util.*; |
| import java.util.logging.Logger; |
| |
| /** |
| * Default implementation of {@link ConfigurationBuilder}. |
| */ |
| public class DefaultConfigurationBuilder implements ConfigurationBuilder { |
| |
| private static final Logger LOG = Logger.getLogger(DefaultConfigurationBuilder.class.getName()); |
| |
| protected ServiceContext serviceContext = ServiceContextManager.getServiceContext(); |
| protected List<PropertyFilter> propertyFilters = new ArrayList<>(); |
| protected List<PropertySource> propertySources = new ArrayList<>(); |
| protected Map<TypeLiteral<?>, List<PropertyConverter<?>>> propertyConverters = new HashMap<>(); |
| protected MetadataProvider metaDataProvider = serviceContext.create(MetadataProvider.class, DefaultMetaDataProvider::new); |
| |
| /** |
| * Flag if the config has already been built. |
| * Configuration can be built only once |
| */ |
| protected boolean built; |
| |
| /** |
| * Creates a new builder instance. |
| */ |
| public DefaultConfigurationBuilder() { |
| |
| } |
| |
| |
| /** |
| * Creates a new builder instance. |
| * @param context the configuration context to be used, not null. |
| */ |
| public DefaultConfigurationBuilder(ConfigurationContext context) { |
| this.propertyConverters.putAll(context.getPropertyConverters()); |
| this.propertyFilters.addAll(context.getPropertyFilters()); |
| for(PropertySource ps:context.getPropertySources()) { |
| addPropertySources(ps); |
| } |
| } |
| |
| /** |
| * Creates a new builder instance initializing it with the given context. |
| * @param configuration the configuration to be used, not null. |
| */ |
| public DefaultConfigurationBuilder(Configuration configuration) { |
| this(configuration.getContext()); |
| } |
| |
| @Override |
| public ConfigurationBuilder setClassLoader(ClassLoader classLoader) { |
| setServiceContext(ServiceContextManager.getServiceContext(classLoader)); |
| serviceContext.reset(); |
| return this; |
| } |
| |
| @Override |
| public ClassLoader getClassLoader() { |
| return serviceContext.getClassLoader(); |
| } |
| |
| @Override |
| public ConfigurationBuilder setServiceContext(ServiceContext serviceContext) { |
| checkBuilderState(); |
| this.serviceContext = Objects.requireNonNull(serviceContext); |
| return this; |
| } |
| |
| /** |
| * Allows to setCurrent configuration context during unit tests. |
| * @param configuration the configuration to be used, not null. |
| */ |
| public ConfigurationBuilder setConfiguration(Configuration configuration) { |
| setContext(configuration.getContext()); |
| return this; |
| } |
| |
| |
| @Override |
| public ConfigurationBuilder setContext(ConfigurationContext context) { |
| checkBuilderState(); |
| //noinspection deprecation |
| this.propertyFilters.clear(); |
| this.propertyFilters.addAll(context.getPropertyFilters()); |
| this.propertySources.clear(); |
| for(PropertySource ps:context.getPropertySources()) { |
| addPropertySources(ps); |
| } |
| this.propertyConverters.clear(); |
| this.propertyConverters.putAll(context.getPropertyConverters()); |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder setMeta(String property, String key, String value){ |
| this.metaDataProvider.setMeta(property, key, value); |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder setMeta(String property, Map<String, String> metaData){ |
| this.metaDataProvider.setMeta(property, metaData); |
| return this; |
| } |
| |
| /** |
| * Adds the given sources as property sources. |
| * |
| * @param sources property sources to addPropertyValue. |
| * @return the current configuration builder. |
| */ |
| @Override |
| public ConfigurationBuilder addPropertySources(Collection<PropertySource> sources){ |
| checkBuilderState(); |
| for(PropertySource source:sources) { |
| if(this.propertySources.stream() |
| .filter(ex -> Objects.equals(ex.getName(), source.getName())) |
| .findAny() |
| .isPresent()){ |
| LOG.finest(() -> "Omitting already present property source: " + source.getName()); |
| continue; |
| } |
| this.propertySources.add(source); |
| } |
| return this; |
| } |
| |
| public ConfigurationBuilder addDefaultPropertyFilters() { |
| checkBuilderState(); |
| for(PropertyFilter pf:serviceContext.getServices(PropertyFilter.class)){ |
| addPropertyFilters(pf); |
| } |
| return this; |
| } |
| |
| public ConfigurationBuilder addDefaultPropertySources() { |
| checkBuilderState(); |
| List<PropertySource> propertySources = new ArrayList<>(); |
| addCorePropertyResources(propertySources); |
| for(PropertySource ps: serviceContext.getServices(PropertySource.class)) { |
| if(!propertySources.contains(ps)){ |
| propertySources.add(ps); |
| } |
| } |
| for(PropertySourceProvider provider: |
| serviceContext.getServices(PropertySourceProvider.class)){ |
| propertySources.addAll(provider.getPropertySources()); |
| } |
| Collections.sort(propertySources, PropertySourceComparator.getInstance()); |
| return addPropertySources(propertySources); |
| } |
| |
| public ConfigurationBuilder addDefaultPropertyConverters() { |
| checkBuilderState(); |
| addCorePropertyConverters(); |
| for(Map.Entry<TypeLiteral, Collection<PropertyConverter>> en:getDefaultPropertyConverters().entrySet()){ |
| for(PropertyConverter pc: en.getValue()) { |
| addPropertyConverters(en.getKey(), pc); |
| } |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder removePropertySources(Collection<PropertySource> propertySources) { |
| checkBuilderState(); |
| this.propertySources.removeAll(propertySources); |
| return this; |
| } |
| |
| @Override |
| public List<PropertySource> getPropertySources() { |
| return Collections.unmodifiableList(this.propertySources); |
| } |
| |
| @Override |
| public ConfigurationBuilder increasePriority(PropertySource propertySource) { |
| checkBuilderState(); |
| int index = propertySources.indexOf(propertySource); |
| if(index<0){ |
| throw new IllegalArgumentException("No such PropertySource: " + propertySource); |
| } |
| if(index<(propertySources.size()-1)){ |
| propertySources.remove(propertySource); |
| propertySources.add(index+1, propertySource); |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder decreasePriority(PropertySource propertySource) { |
| checkBuilderState(); |
| int index = propertySources.indexOf(propertySource); |
| if(index<0){ |
| throw new IllegalArgumentException("No such PropertySource: " + propertySource); |
| } |
| if(index>0){ |
| propertySources.remove(propertySource); |
| propertySources.add(index-1, propertySource); |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder highestPriority(PropertySource propertySource) { |
| checkBuilderState(); |
| int index = propertySources.indexOf(propertySource); |
| if(index<0){ |
| throw new IllegalArgumentException("No such PropertySource: " + propertySource); |
| } |
| if(index<(propertySources.size()-1)){ |
| propertySources.remove(propertySource); |
| propertySources.add(propertySource); |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder lowestPriority(PropertySource propertySource) { |
| checkBuilderState(); |
| int index = propertySources.indexOf(propertySource); |
| if(index<0){ |
| throw new IllegalArgumentException("No such PropertySource: " + propertySource); |
| } |
| if(index>0){ |
| propertySources.remove(propertySource); |
| propertySources.add(0, propertySource); |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder addPropertyFilters(Collection<PropertyFilter> filters){ |
| checkBuilderState(); |
| for(PropertyFilter f:filters) { |
| if (!this.propertyFilters.contains(f)) { |
| this.propertyFilters.add(f); |
| } |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder removePropertyFilters(Collection<PropertyFilter> filters) { |
| checkBuilderState(); |
| this.propertyFilters.removeAll(filters); |
| return this; |
| } |
| |
| @Override |
| public <T> ConfigurationBuilder removePropertyConverters(TypeLiteral<T> typeToConvert, |
| Collection<PropertyConverter<T>> converters) { |
| Collection<PropertyConverter<?>> subConverters = this.propertyConverters.get(typeToConvert); |
| if(subConverters!=null) { |
| subConverters.removeAll(converters); |
| } |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder removePropertyConverters(TypeLiteral<?> typeToConvert) { |
| this.propertyConverters.remove(typeToConvert); |
| return this; |
| } |
| |
| @Override |
| public <T> ConfigurationBuilder addPropertyConverters(TypeLiteral<T> type, Collection<PropertyConverter<T>> propertyConverters){ |
| checkBuilderState(); |
| Objects.requireNonNull(type); |
| Objects.requireNonNull(propertyConverters); |
| List<PropertyConverter<?>> converters = this.propertyConverters.get(type); |
| if(converters==null){ |
| converters = new ArrayList<>(); |
| this.propertyConverters.put(type, converters); |
| } |
| for(PropertyConverter<T> propertyConverter:propertyConverters) { |
| if (!converters.contains(propertyConverter)) { |
| converters.add(propertyConverter); |
| } else { |
| LOG.finest("Converter ignored, already registered: " + propertyConverter); |
| } |
| } |
| return this; |
| } |
| |
| /** |
| * Builds a new configuration based on the configuration of this builder instance. |
| * |
| * @return a new {@link org.apache.tamaya.Configuration} configuration instance, |
| * never {@code null}. |
| */ |
| @Override |
| public Configuration build() { |
| Configuration cfg = new DefaultConfiguration( |
| new DefaultConfigurationContext( |
| serviceContext, |
| this.propertyFilters, |
| this.propertySources, |
| this.propertyConverters, |
| this.metaDataProvider)); |
| this.built = true; |
| return cfg; |
| } |
| |
| @Override |
| public ConfigurationBuilder sortPropertyFilter(Comparator<PropertyFilter> comparator) { |
| Collections.sort(propertyFilters, comparator); |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder sortPropertySources(Comparator<PropertySource> comparator) { |
| Collections.sort(propertySources, comparator); |
| return this; |
| } |
| |
| @Override |
| public ConfigurationBuilder sortPropertyConverter(Comparator<PropertyConverter> comparator) { |
| for(List<PropertyConverter<?>> converters:this.propertyConverters.values()) { |
| Collections.sort(converters, comparator); |
| } |
| return this; |
| } |
| |
| @Override |
| public List<PropertyFilter> getPropertyFilters() { |
| return this.propertyFilters; |
| } |
| |
| @Override |
| public Map<TypeLiteral<?>, List<PropertyConverter<?>>> getPropertyConverter() { |
| return this.propertyConverters; |
| } |
| |
| protected ConfigurationBuilder loadDefaults() { |
| checkBuilderState(); |
| addDefaultPropertySources(); |
| addDefaultPropertyFilters(); |
| addDefaultPropertyConverters(); |
| return this; |
| } |
| |
| protected Map<TypeLiteral, Collection<PropertyConverter>> getDefaultPropertyConverters() { |
| Map<TypeLiteral, Collection<PropertyConverter>> result = new HashMap<>(); |
| for (PropertyConverter conv : serviceContext.getServices( |
| PropertyConverter.class)) { |
| for(Type type:conv.getClass().getGenericInterfaces()){ |
| if(type instanceof ParameterizedType){ |
| ParameterizedType pt = (ParameterizedType)type; |
| if(PropertyConverter.class.equals(((ParameterizedType) type).getRawType())){ |
| TypeLiteral target = TypeLiteral.of(pt.getActualTypeArguments()[0]); |
| Collection<PropertyConverter> convList = result.get(target); |
| if (convList == null) { |
| convList = new ArrayList<>(); |
| result.put(target, convList); |
| } |
| convList.add(conv); |
| } |
| } |
| } |
| } |
| return result; |
| } |
| |
| protected void addCorePropertyResources(List<PropertySource> propertySources) { |
| JavaConfigurationPropertySource jps = new JavaConfigurationPropertySource(); |
| jps.init(serviceContext.getClassLoader()); |
| for(PropertySource ps: new PropertySource[]{ |
| new EnvironmentPropertySource(), |
| jps, |
| new CLIPropertySource(), |
| new SystemPropertySource() |
| }){ |
| if(!propertySources.contains(ps)){ |
| propertySources.add(ps); |
| } |
| } |
| } |
| |
| @SuppressWarnings("unchecked") |
| protected void addCorePropertyConverters() { |
| // should be overridden by subclasses. |
| } |
| |
| protected PropertySource getPropertySource(String name) { |
| for(PropertySource ps:propertySources){ |
| if(ps.getName().equals(name)){ |
| return ps; |
| } |
| } |
| throw new IllegalArgumentException("No such PropertySource: "+name); |
| } |
| |
| private void checkBuilderState() { |
| if (built) { |
| throw new IllegalStateException("Configuration has already been build."); |
| } |
| } |
| } |