| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.util; |
| 20 | |
| 21 | import static com.google.common.base.Splitter.on; |
| 22 | import static com.google.common.collect.Iterables.concat; |
| 23 | import static com.google.common.collect.Iterables.transform; |
| 24 | |
| 25 | import java.util.Properties; |
| 26 | |
| 27 | import com.google.common.base.Function; |
| 28 | import com.google.common.collect.ImmutableList; |
| 29 | import com.google.common.collect.ImmutableSet; |
| 30 | import com.google.inject.Module; |
| 31 | |
| 32 | |
| 33 | |
| 34 | /** |
| 35 | * |
| 36 | * |
| 37 | * @author Adrian Cole |
| 38 | */ |
| 39 | public class Modules2 { |
| 40 | |
| 41 | public static Iterable<Module> modulesFromCommaDelimitedString(String moduleClasses) { |
| 42 | Iterable<Module> modules = ImmutableSet.of(); |
| 43 | if (moduleClasses != null) { |
| 44 | Iterable<String> transformer = ImmutableList.copyOf(on(',').split(moduleClasses)); |
| 45 | modules = transform(transformer, new Function<String, Module>() { |
| 46 | |
| 47 | @Override |
| 48 | public Module apply(String from) { |
| 49 | try { |
| 50 | return (Module) Class.forName(from).newInstance(); |
| 51 | } catch (InstantiationException e) { |
| 52 | throw new RuntimeException("error instantiating " + from, e); |
| 53 | } catch (IllegalAccessException e) { |
| 54 | throw new RuntimeException("error instantiating " + from, e); |
| 55 | } catch (ClassNotFoundException e) { |
| 56 | throw new RuntimeException("error instantiating " + from, e); |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | }); |
| 61 | } |
| 62 | return modules; |
| 63 | } |
| 64 | |
| 65 | public static Iterable<Module> modulesForProviderInProperties(String providerName, Properties props) { |
| 66 | return concat(modulesFromProperty(props, "jclouds.modules"), |
| 67 | modulesFromProperty(props, providerName + ".modules")); |
| 68 | } |
| 69 | |
| 70 | public static Iterable<Module> modulesFromProperty(Properties props, String property) { |
| 71 | return modulesFromCommaDelimitedString(props.getProperty(property, null)); |
| 72 | } |
| 73 | |
| 74 | } |