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package com.distelli.aws;

import com.distelli.cred.CredProvider;
import com.distelli.cred.CredPair;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicSessionCredentials;


import com.amazonaws.auth.DefaultAWSCredentialsProviderChain;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.amazonaws.auth.profile.ProfileCredentialsProvider;

public class CredProviderAws implements CredProvider {
    private AWSCredentialsProvider _credProvider;

    public CredProviderAws(String profileName) {
        _credProvider = new ProfileCredentialsProvider(profileName);
    }

    public CredProviderAws() {
        _credProvider = new DefaultAWSCredentialsProviderChain();
    }

    @Override
    public CredPair getCredPair() {
        AWSCredentials awsCreds = _credProvider.getCredentials();
        String keyId = awsCreds.getAWSAccessKeyId();
        String secret = awsCreds.getAWSSecretKey();
        if ( awsCreds instanceof BasicSessionCredentials ) {
            secret = secret + "\u001E" + ((BasicSessionCredentials)awsCreds).getSessionToken();
        }
        return new CredPair()
            .withKeyId(keyId)
            .withSecret(secret);
    }

    @Override
    public void refresh() {
        if ( null == _credProvider ) return;
        _credProvider.refresh();
    }
}