org.apache.whirr.service.vblob.CommonsConfigurationToVBlobConfig.java Source code

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Here is the source code for org.apache.whirr.service.vblob.CommonsConfigurationToVBlobConfig.java

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/**
 * 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.whirr.service.vblob;

import static com.google.common.base.Preconditions.checkNotNull;

import java.net.URI;

import org.apache.commons.configuration.Configuration;
import org.apache.whirr.service.vblob.VBlobConfig.Builder;

import com.google.common.base.Function;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;

public class CommonsConfigurationToVBlobConfig implements Function<Configuration, VBlobConfig> {
    private final String prefix;
    private final String user;

    public CommonsConfigurationToVBlobConfig(String prefix, String user) {
        this.prefix = checkNotNull(prefix, "prefix");
        this.user = checkNotNull(user, "user");
    }

    @SuppressWarnings("unchecked")
    static String getPropertyOrThrowReasonableNPE(String propertyKey, Configuration config) {
        return checkNotNull(config.getString(propertyKey), "%s not in %s", propertyKey,
                ImmutableSet.copyOf(config.getKeys()));
    }

    @Override
    public VBlobConfig apply(Configuration input) {
        Builder builder = VBlobConfig.builder();
        builder.user(user);
        builder.home(getPropertyOrThrowReasonableNPE(prefix + ".home", input));
        builder.s3Port(Integer.parseInt(getPropertyOrThrowReasonableNPE(prefix + ".s3port", input)));
        builder.authorizedAccessKey(getPropertyOrThrowReasonableNPE(prefix + ".auth.access-key", input));
        builder.authorizedSecretKey(getPropertyOrThrowReasonableNPE(prefix + ".auth.secret-key", input));
        builder.tar(URI.create(getPropertyOrThrowReasonableNPE(prefix + ".tar.url", input)));
        builder.formatToNodejsPackage(ImmutableMap.<String, URI>builder()
                .put("deb", URI.create(getPropertyOrThrowReasonableNPE(prefix + ".node.deb.url", input)))
                .put("rpm", URI.create(getPropertyOrThrowReasonableNPE(prefix + ".node.rpm.url", input))).build());
        builder.foreverVersion(getPropertyOrThrowReasonableNPE(prefix + ".forever.version", input));
        return builder.build();
    }
}