ConfigurationAWSCredentialsProvider.java

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// 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
//
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package com.amazonaws.glue.catalog.credentials;

import com.amazonaws.SdkClientException;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.auth.BasicSessionCredentials;
import com.amazonaws.glue.catalog.util.AWSGlueConfig;
import com.amazonaws.util.StringUtils;
import org.apache.hadoop.conf.Configuration;

public class ConfigurationAWSCredentialsProvider implements AWSCredentialsProvider {

    private Configuration conf;

    public ConfigurationAWSCredentialsProvider(Configuration conf) {
        this.conf = conf;
    }

    @Override
    public AWSCredentials getCredentials() {
        String accessKey = StringUtils.trim(conf.get(AWSGlueConfig.AWS_GLUE_ACCESS_KEY));
        String secretKey = StringUtils.trim(conf.get(AWSGlueConfig.AWS_GLUE_SECRET_KEY));
        String sessionToken = StringUtils.trim(conf.get(AWSGlueConfig.AWS_GLUE_SESSION_TOKEN));
        if (!StringUtils.isNullOrEmpty(accessKey) && !StringUtils.isNullOrEmpty(secretKey)) {
            return (StringUtils.isNullOrEmpty(sessionToken) ? new BasicAWSCredentials(accessKey,
                    secretKey) : new BasicSessionCredentials(accessKey, secretKey, sessionToken));
        } else {
            throw new SdkClientException(
                    "Unable to load AWS credentials from hive conf (aws.glue.access-key and aws.glue.secret-key)");
        }
    }

    @Override
    public void refresh() {

    }

    @Override
    public String toString() {
        return this.getClass().getSimpleName();
    }
}