com.facebook.buck.cli.SuggestCommand.java Source code

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Here is the source code for com.facebook.buck.cli.SuggestCommand.java

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/*
 * Copyright 2016-present Facebook, Inc.
 *
 * 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.facebook.buck.cli;

import com.facebook.buck.model.BuildTarget;
import com.facebook.buck.util.Console;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;

import org.kohsuke.args4j.Argument;

import java.io.IOException;
import java.util.List;

/**
 * Command for proposing a fine-grained partitioning of a Java build rule.
 */
public class SuggestCommand extends AbstractCommand {
    /** This command has one required argument, which must be a build target or alias. */
    @Argument
    private List<String> arguments = Lists.newArrayList();

    /**
     * Normalizes the sole build target argument and partitions it using a
     * {@link FineGrainedJavaDependencySuggester}.
     */
    @Override
    public int runWithoutHelp(final CommandRunnerParams params) throws IOException, InterruptedException {
        final Console console = params.getConsole();
        if (arguments.size() != 1) {
            console.printErrorText("Must specify exactly one argument to 'buck suggest'.");
            return 1;
        }

        String targetToBreakDown = Iterables.getOnlyElement(arguments);
        final String fullyQualifiedTarget = Iterables.getOnlyElement(
                getCommandLineBuildTargetNormalizer(params.getBuckConfig()).normalize(targetToBreakDown));

        JavaBuildGraphProcessor.Processor processor = (graph, javaDepsFinder, executorService) -> {
            BuildTarget buildTarget = params.getBuckConfig()
                    .getBuildTargetForFullyQualifiedTarget(fullyQualifiedTarget);
            FineGrainedJavaDependencySuggester suggester = new FineGrainedJavaDependencySuggester(buildTarget,
                    graph, javaDepsFinder, console);
            suggester.suggestRefactoring();
        };
        try {
            JavaBuildGraphProcessor.run(params, this, processor);
        } catch (JavaBuildGraphProcessor.ExitCodeException e) {
            return e.exitCode;
        }

        return 0;
    }

    @Override
    public boolean isReadOnly() {
        return true;
    }

    @Override
    public String getShortDescription() {
        return "suggests a refactoring for the specified build target";
    }
}