Java tutorial
/** * 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.curator.x.rpc.configuration; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.jsontype.SubtypeResolver; import com.fasterxml.jackson.databind.jsontype.impl.StdSubtypeResolver; import io.dropwizard.configuration.ConfigurationFactory; import io.dropwizard.configuration.ConfigurationFactoryFactory; import io.dropwizard.configuration.ConfigurationSourceProvider; import io.dropwizard.configuration.DefaultConfigurationFactoryFactory; import io.dropwizard.jackson.AnnotationSensitivePropertyNamingStrategy; import io.dropwizard.jackson.LogbackModule; import io.dropwizard.logging.ConsoleAppenderFactory; import io.dropwizard.logging.FileAppenderFactory; import io.dropwizard.logging.LoggingFactory; import io.dropwizard.logging.SyslogAppenderFactory; import org.jboss.netty.logging.InternalLoggerFactory; import org.jboss.netty.logging.Slf4JLoggerFactory; import javax.validation.Validation; import javax.validation.ValidatorFactory; import java.io.ByteArrayInputStream; import java.io.IOException; import java.io.InputStream; import java.nio.charset.Charset; public class ConfigurationBuilder { private final String configurationSource; static { LoggingFactory.bootstrap(); InternalLoggerFactory.setDefaultFactory(new Slf4JLoggerFactory()); } public ConfigurationBuilder(String configurationSource) { this.configurationSource = configurationSource; } public Configuration build() throws Exception { ObjectMapper mapper = new ObjectMapper(); mapper.registerModule(new LogbackModule()); mapper.setPropertyNamingStrategy(new AnnotationSensitivePropertyNamingStrategy()); SubtypeResolver subtypeResolver = new StdSubtypeResolver(); subtypeResolver.registerSubtypes(ConsoleAppenderFactory.class, FileAppenderFactory.class, SyslogAppenderFactory.class, ExponentialBackoffRetryConfiguration.class, RetryNTimesConfiguration.class); mapper.setSubtypeResolver(subtypeResolver); ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory(); ConfigurationFactoryFactory<Configuration> factoryFactory = new DefaultConfigurationFactoryFactory<Configuration>(); ConfigurationFactory<Configuration> configurationFactory = factoryFactory.create(Configuration.class, validatorFactory.getValidator(), mapper, "curator"); ConfigurationSourceProvider provider = new ConfigurationSourceProvider() { @Override public InputStream open(String path) throws IOException { return new ByteArrayInputStream(configurationSource.getBytes(Charset.defaultCharset())); } }; return configurationFactory.build(provider, ""); } }