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    protected final String id;
039
040    /**
041     * Gets a Nuxeo AWS Credentials Provider for the default configuration.
042     */
043    public static AWSCredentialsProvider getInstance() {
044        return INSTANCE;
045    }
046
047    /**
048     * Creates a new Nuxeo AWS Credentials Provider for the default configuration.
049     */
050    public NuxeoAWSCredentialsProvider() {
051        this(null);
052    }
053
054    /**
055     * Creates a new Nuxeo AWS Credentials Provider for the given configuration.
056     *
057     * @param id the configuration id, or {@code null} for the default
058     * @since 11.1
059     */
060    public NuxeoAWSCredentialsProvider(String id) {
061        this.id = id;
062    }
063
064    @Override
065    public AWSCredentials getCredentials() {
066        AWSConfigurationService service = Framework.getService(AWSConfigurationService.class);
067        if (service != null) {
068            AWSCredentials credentials = service.getAWSCredentials(id);
069            if (credentials != null) {
070                return credentials;
071            }
072        }
073        return DEFAULT.getCredentials();
074    }
075
076    @Override
077    public void refresh() {
078        DEFAULT.refresh();
079    }
080
081}