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MDW is a workflow framework specializing in microservice orchestration
There is a newer version: 6.1.39
/*
 * Copyright (C) 2017 CenturyLink, 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.centurylink.mdw.cli;

import java.io.IOException;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import com.beust.jcommander.JCommander;
import com.beust.jcommander.Parameter;
import com.beust.jcommander.Parameters;
import com.centurylink.mdw.dataaccess.VersionControl;

/**
 * Uses reflection to avoid hard dependency on JGit.
 */
@Parameters(commandNames="git", commandDescription="Git commands")
public class Git implements Operation {

    public static void main(String[] args) throws IOException {
        JCommander cmd = new JCommander();
        Git git = new Git();
        cmd.addCommand("git", git);
        String[] gitArgs = new String[args.length + 1];
        gitArgs[0] = "git";
        gitArgs[1] = "args";
        for (int i = 1; i < args.length; i++) {
            gitArgs[i+1] = args[i];
        }
        cmd.parse(gitArgs);
        git.run(Main.getMonitor());
    }

    private String mavenRepoUrl;
    private VcInfo vcInfo;
    private String command;
    private Object[] params;
    private Object result;
    public Object getResult() { return result; }

    /**
     * Arguments for pass-thru git command.
     */
    @Parameter(names="args", description="Pass-thru jgit arguments", variableArity=true)
    public List args = new ArrayList<>();

    // for CLI
    Git() {
        mavenRepoUrl = "http://repo.maven.apache.org/maven2";
        command = "git";
    }

    public Git(String mavenRepoUrl, VcInfo vcInfo, String command, Object...params) {
        this.mavenRepoUrl = mavenRepoUrl;
        this.vcInfo = vcInfo;
        this.command = command;
        this.params = params;
    }

    @Override
    public Git run(ProgressMonitor... progressMonitors) throws IOException {

        Map gitDependencies = VcInfo.getDependencies("git");
        for (String dep : gitDependencies.keySet()) {
            new Dependency(mavenRepoUrl, dep, gitDependencies.get(dep)).run(progressMonitors);
        }

        if (command != null) {
            try {
                invokeVersionControl();
            }
            catch (ReflectiveOperationException ex) {
                throw new IOException(ex.getMessage(), ex);
            }
        }

        return this;
    }

    private Class vcClass;
    private VersionControl versionControl;
    VersionControl getVersionControl() { return versionControl; }

    private void invokeVersionControl()
            throws ReflectiveOperationException, IOException {
        if (vcClass == null) {
            String vcClassName = VcInfo.getVersionControlClass("git");
            vcClass = Class.forName(vcClassName).asSubclass(VersionControl.class);
            versionControl = vcClass.newInstance();
            if (!command.equals("git")) {
                versionControl.connect(vcInfo.getUrl(), vcInfo.getUser(), vcInfo.getPassword(), vcInfo.getLocalDir());
                if (!versionControl.exists()) {
                    getOut().println("Git local not found: " + vcInfo.getLocalDir() + " -- cloning from " + vcInfo.getUrl() + "...");
                    vcClass.getMethod("cloneNoCheckout", boolean.class).invoke(versionControl, true);
                }
            }
        }

        // run the requested command
        List> types = new ArrayList<>();
        List