com.vmware.photon.controller.api.Component.java Source code

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Here is the source code for com.vmware.photon.controller.api.Component.java

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/*
 * Copyright 2015 VMware, Inc. All Rights Reserved.
 *
 * Licensed 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 com.vmware.photon.controller.api;

import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;

import java.util.Collection;
import java.util.EnumSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * Components of the system.
 */
public enum Component {
    HOUSEKEEPER("housekeeper"), ROOT_SCHEDULER("rootScheduler"), DEPLOYER("deployer"), CLOUD_STORE("cloudStore");
    private static final Map<String, Component> COMPONENT_MAP;
    static {
        ImmutableMap.Builder<String, Component> builder = ImmutableMap.builder();
        for (Component component : Component.values()) {
            builder.put(component.toString(), component);
        }
        COMPONENT_MAP = builder.build();
    }
    private final String moduleString;

    Component(String moduleString) {
        this.moduleString = moduleString;
    }

    /**
     * Translates a collection of Strings into Component Enums.
     */
    public static Set<Component> fromStrings(Collection<String> values) {

        List<Component> result = Lists.newArrayListWithExpectedSize(values.size());

        for (String value : values) {
            result.add(Component.fromString(value));
        }

        return EnumSet.copyOf(result);
    }

    public static Component fromString(String value) {
        Component result = COMPONENT_MAP.get(value);
        if (result == null) {
            throw new IllegalArgumentException(value + " is not a valid component!!");
        }
        return result;
    }

    @Override
    public String toString() {
        return moduleString;
    }
}