001/*
002 * (C) Copyright 2018 Nuxeo (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 *     Florent Guillaume
018 */
019package org.nuxeo.runtime.aws;
020
021import org.nuxeo.runtime.api.Framework;
022
023import com.amazonaws.auth.AWSCredentials;
024import com.amazonaws.auth.AWSCredentialsProvider;
025import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
026
027/**
028 * AWS Credentials Provider that uses Nuxeo configuration, or uses the default AWS chain as a fallback.
029 *
030 * @since 10.3
031 */
032public class NuxeoAWSCredentialsProvider implements AWSCredentialsProvider {
033
034    protected static final AWSCredentialsProvider INSTANCE = new NuxeoAWSCredentialsProvider();
035
036    protected static final AWSCredentialsProvider DEFAULT = new DefaultAWSCredentialsProviderChain();
037
038    public static AWSCredentialsProvider getInstance() {
039        return INSTANCE;
040    }
041
042    @Override
043    public AWSCredentials getCredentials() {
044        AWSConfigurationService service = Framework.getService(AWSConfigurationService.class);
045        if (service != null) {
046            AWSCredentials credentials = service.getAWSCredentials();
047            if (credentials != null) {
048                return credentials;
049            }
050        }
051        return DEFAULT.getCredentials();
052    }
053
054    @Override
055    public void refresh() {
056        DEFAULT.refresh();
057    }
058
059}