org.kuali.maven.wagon.auth.AuthenticationInfoCredentialsProvider.java Source code

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Here is the source code for org.kuali.maven.wagon.auth.AuthenticationInfoCredentialsProvider.java

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/**
 * Copyright 2010-2014 The Kuali Foundation
 *
 * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
 *
 * 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.kuali.maven.wagon.auth;

import org.apache.maven.wagon.authentication.AuthenticationInfo;

import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.AWSCredentialsProvider;
import com.google.common.base.Optional;

public final class AuthenticationInfoCredentialsProvider implements AWSCredentialsProvider {

    public AuthenticationInfoCredentialsProvider(Optional<AuthenticationInfo> auth) {
        Assert.notNull(auth);
        this.auth = auth;
    }

    private final Optional<AuthenticationInfo> auth;

    public AWSCredentials getCredentials() {
        if (!auth.isPresent()) {
            throw new IllegalStateException(getAuthenticationErrorMessage());
        }
        String accessKey = auth.get().getUserName();
        String secretKey = auth.get().getPassword();
        Assert.noBlanksWithMsg(getAuthenticationErrorMessage(), accessKey, secretKey);
        return new AwsCredentials(accessKey, secretKey);
    }

    public void refresh() {
        // no-op
    }

    protected String getAuthenticationErrorMessage() {
        StringBuffer sb = new StringBuffer();
        sb.append(
                "The S3 wagon needs AWS Access Key set as the username and AWS Secret Key set as the password. eg:\n");
        sb.append("<server>\n");
        sb.append("  <id>my.server</id>\n");
        sb.append("  <username>[AWS Access Key ID]</username>\n");
        sb.append("  <password>[AWS Secret Access Key]</password>\n");
        sb.append("</server>\n");
        return sb.toString();
    }

}