net.oneandone.stool.SessionCommand Maven / Gradle / Ivy

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Stool's main component. Java Library, cli, setup code.
There is a newer version: 4.0.3
/**
 * Copyright 1&1 Internet AG, https://github.com/1and1/
 *
 * 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 net.oneandone.stool;

import net.oneandone.stool.locking.Mode;
import net.oneandone.stool.stage.Stage;
import net.oneandone.stool.locking.Lock;
import net.oneandone.stool.util.Session;
import net.oneandone.sushi.cli.Command;
import net.oneandone.sushi.cli.Console;
import net.oneandone.sushi.cli.Option;
import net.oneandone.sushi.fs.Node;
import net.oneandone.sushi.fs.World;
import net.oneandone.sushi.fs.file.FileNode;
import net.oneandone.sushi.launcher.Launcher;
import net.oneandone.sushi.util.Separator;
import net.oneandone.sushi.util.Strings;

import java.io.IOException;
import java.io.Writer;

public abstract class SessionCommand implements Command {
    protected final Console console;
    protected final World world;
    protected final Session session;
    private final Mode globalLock;

    public SessionCommand(Session session, Mode globalLock) {
        this.console = session.console;
        this.world = console.world;
        this.session = session;
        this.globalLock = globalLock;
    }

    @Option("nolock")
    protected boolean noLock;

    @Override
    public void invoke() throws Exception {
        try (Lock lock = createLock("ports", globalLock)) {
            doInvoke();
        }
        session.invocationFileUpdate();
    }

    protected Lock createLock(String lock, Mode mode) throws IOException {
        return session.lockManager.acquire(lock, console, noLock ? Mode.NONE : mode);
    }

    public abstract void doInvoke() throws Exception;

    protected void checkCommitted(Stage stage) throws IOException {
        FileNode directory;
        String str;

        directory = stage.getDirectory();
        if (!directory.join(".svn").isDirectory()) {
            return; // artifact stage
        }
        str = session.subversion().status(directory);
        if (isModified(str)) {
            message(Strings.indent(str, "  "));
            throw new IOException(directory + ": checkout has modifications - aborted.\n You may run with -force");
        }
    }

    private static boolean isModified(String lines) {
        for (String line : Separator.on("\n").split(lines)) {
            if (line.trim().length() > 0) {
                if (line.startsWith("X") || line.startsWith("Performing status on external item")) {
                    // needed for external references
                } else {
                    return true;
                }
            }
        }
        return false;
    }

    //--

    protected void run(Launcher l, Node output) throws IOException {
        message(l, output instanceof FileNode ? " > " + output : "");
        runQuiet(l, output);
    }

    protected void runQuiet(Launcher l, Node output) throws IOException {
        try (Writer out = output.createWriter()) {
            l.exec(out);
        }
    }

    protected void header(String h) {
        console.info.println("[" + h + "]");
    }

    protected void message(Launcher l, String suffix) {
        message(Separator.SPACE.join(l.getBuilder().command()) + suffix);
    }

    protected void message(String msg) {
        console.info.println(Strings.indent(msg, "  "));
    }

    protected void newline() {
        console.info.println();
    }
}