org.jclouds.googlecomputeengine.compute.functions.BuildInstanceMetadata Maven / Gradle / Ivy

Go to download
/*
 * 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.jclouds.googlecomputeengine.compute.functions;

import static com.google.common.base.Preconditions.checkNotNull;
import static java.lang.String.format;

import javax.inject.Singleton;

import org.jclouds.compute.options.TemplateOptions;

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

/**
 * Prepares metadata from the provided TemplateOptions
 *
 * @author David Alves
 */
@Singleton
public class BuildInstanceMetadata implements Function> {

   @Override
   public ImmutableMap.Builder apply(TemplateOptions input) {
      ImmutableMap.Builder builder = ImmutableMap.builder();
      if (input.getPublicKey() != null) {
         builder.put("sshKeys", format("%s:%s %s@localhost", checkNotNull(input.getLoginUser(),
                 "loginUser cannot be null"), input.getPublicKey(), input.getLoginUser()));
      }
      builder.putAll(input.getUserMetadata());
      return builder;
   }

}