org.grails.cli.profile.steps.StepRegistry.groovy Maven / Gradle / Ivy

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/*
 * Copyright 2014-2023 the original author or authors.
 *
 * 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
 *
 *      https://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.grails.cli.profile.steps

import groovy.transform.CompileStatic

import org.grails.cli.profile.Command
import org.grails.cli.profile.Step

/**
 * Registry of steps
 *
 * @author Graeme Rocher
 *
 * @since 3.0
 */
@CompileStatic
class StepRegistry {

    private static final Collection REGISTERED_STEP_FACTORIES = []

    static {
        Iterator stepFactories = ServiceLoader.load(StepFactory).iterator()

        while (stepFactories.hasNext()) {
            StepFactory stepFactory = stepFactories.next()
            REGISTERED_STEP_FACTORIES << stepFactory
        }
    }

    /**
     * Looks up a {@link Step}
     *
     * @param name The name of the {@link Step}
     * @return A step or null if it doesn't exist for the given name
     */
    static Step getStep(String name, Command command, Map parameters) {
        if (!name) {
            return null
        }
        for (StepFactory sf in REGISTERED_STEP_FACTORIES) {
            Step step = sf.createStep(name, command, parameters)
            if (step) {
                return step
            }
        }
    }

}