| 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.scriptbuilder.functions; |
| 20 | |
| 21 | import java.util.concurrent.atomic.AtomicReference; |
| 22 | |
| 23 | import org.jclouds.javax.annotation.Nullable; |
| 24 | |
| 25 | import org.jclouds.domain.Credentials; |
| 26 | import org.jclouds.scriptbuilder.domain.AcceptsStatementVisitor; |
| 27 | import org.jclouds.scriptbuilder.domain.Statement; |
| 28 | import org.jclouds.scriptbuilder.domain.StatementVisitor; |
| 29 | import org.jclouds.scriptbuilder.statements.login.AdminAccess; |
| 30 | |
| 31 | import com.google.common.base.Function; |
| 32 | |
| 33 | /** |
| 34 | * |
| 35 | * @author Adrian Cole |
| 36 | */ |
| 37 | public enum CredentialsFromAdminAccess implements Function<Statement, Credentials> { |
| 38 | INSTANCE; |
| 39 | @Override |
| 40 | public Credentials apply(@Nullable Statement input) { |
| 41 | if (input == null) |
| 42 | return null; |
| 43 | if (input instanceof AcceptsStatementVisitor) { |
| 44 | final AtomicReference<Credentials> credsHolder = new AtomicReference<Credentials>(); |
| 45 | AcceptsStatementVisitor.class.cast(input).accept(new StatementVisitor() { |
| 46 | |
| 47 | @Override |
| 48 | public void visit(Statement in) { |
| 49 | if (credsHolder.get() == null) { |
| 50 | Credentials creds = apply(in); |
| 51 | if (creds != null) |
| 52 | credsHolder.set(creds); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | }); |
| 57 | return credsHolder.get(); |
| 58 | } else if (input instanceof AdminAccess) { |
| 59 | return AdminAccess.class.cast(input).getAdminCredentials(); |
| 60 | } else { |
| 61 | return null; |
| 62 | } |
| 63 | } |
| 64 | } |