| /* |
| * 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.flink.statefun.sdk.kinesis.auth; |
| |
| import java.util.Objects; |
| import java.util.Optional; |
| import javax.annotation.Nullable; |
| |
| /** AWS credentials to use for connecting to AWS Kinesis. */ |
| public abstract class AwsCredentials { |
| |
| private AwsCredentials() {} |
| |
| /** Consults AWS's default provider chain to determine the AWS credentials. */ |
| public static AwsCredentials fromDefaultProviderChain() { |
| return DefaultAwsCredentials.INSTANCE; |
| } |
| |
| /** |
| * Specifies the AWS credentials directly with provided access key ID and secret access key |
| * strings. |
| */ |
| public static AwsCredentials basic(String accessKeyId, String secretAccessKey) { |
| return new BasicAwsCredentials(accessKeyId, secretAccessKey); |
| } |
| |
| /** Specifies the AWS credentials using an AWS configuration profile. */ |
| public static AwsCredentials profile(String profileName) { |
| return new ProfileAwsCredentials(profileName, null); |
| } |
| |
| /** |
| * Specifies the AWS credentials using an AWS configuration profile, along with the profile's |
| * configuration path. |
| */ |
| public static AwsCredentials profile(String profileName, String profilePath) { |
| return new ProfileAwsCredentials(profileName, profilePath); |
| } |
| |
| /** |
| * Checks whether the credentials is configured to be obtained from AWS's default provider chain. |
| */ |
| public boolean isDefault() { |
| return getClass() == DefaultAwsCredentials.class; |
| } |
| |
| /** |
| * Checks whether the credentials is specified using directly provided access key ID and secret |
| * access key strings. |
| */ |
| public boolean isBasic() { |
| return getClass() == BasicAwsCredentials.class; |
| } |
| |
| /** Checks whether the credentials is configured using AWS configuration profiles. */ |
| public boolean isProfile() { |
| return getClass() == ProfileAwsCredentials.class; |
| } |
| |
| /** Returns this as a {@link BasicAwsCredentials}. */ |
| public BasicAwsCredentials asBasic() { |
| if (!isBasic()) { |
| throw new IllegalStateException( |
| "This AWS credential is not defined with basic access key id and secret key."); |
| } |
| return (BasicAwsCredentials) this; |
| } |
| |
| /** Returns this as a {@link ProfileAwsCredentials}. */ |
| public ProfileAwsCredentials asProfile() { |
| if (!isProfile()) { |
| throw new IllegalStateException( |
| "This AWS credential is not defined with a AWS configuration profile"); |
| } |
| return (ProfileAwsCredentials) this; |
| } |
| |
| public static final class DefaultAwsCredentials extends AwsCredentials { |
| private static final DefaultAwsCredentials INSTANCE = new DefaultAwsCredentials(); |
| } |
| |
| public static final class BasicAwsCredentials extends AwsCredentials { |
| private final String accessKeyId; |
| private final String secretAccessKey; |
| |
| BasicAwsCredentials(String accessKeyId, String secretAccessKey) { |
| this.accessKeyId = Objects.requireNonNull(accessKeyId); |
| this.secretAccessKey = Objects.requireNonNull(secretAccessKey); |
| } |
| |
| public String accessKeyId() { |
| return accessKeyId; |
| } |
| |
| public String secretAccessKey() { |
| return secretAccessKey; |
| } |
| } |
| |
| public static final class ProfileAwsCredentials extends AwsCredentials { |
| private final String profileName; |
| @Nullable private final String profilePath; |
| |
| ProfileAwsCredentials(String profileName, @Nullable String profilePath) { |
| this.profileName = Objects.requireNonNull(profileName); |
| this.profilePath = profilePath; |
| } |
| |
| public String name() { |
| return profileName; |
| } |
| |
| public Optional<String> path() { |
| return Optional.ofNullable(profilePath); |
| } |
| } |
| } |