BuildCommand.java

/*
 * The MIT License
 *
 * Copyright (c) 2004-2010, Sun Microsystems, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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package hudson.cli;

import hudson.console.ModelHyperlinkNote;
import hudson.model.AbstractBuild;
import hudson.model.AbstractProject;
import hudson.model.Cause.UserIdCause;
import hudson.model.ParametersAction;
import hudson.model.ParameterValue;
import hudson.model.ParametersDefinitionProperty;
import hudson.model.ParameterDefinition;
import hudson.Extension;
import hudson.AbortException;
import hudson.model.Item;
import hudson.model.Result;
import hudson.model.TaskListener;
import hudson.model.queue.QueueTaskFuture;
import hudson.scm.PollingResult.Change;
import hudson.util.EditDistance;
import hudson.util.StreamTaskListener;
import org.kohsuke.args4j.Argument;
import org.kohsuke.args4j.Option;

import java.util.Map;
import java.util.HashMap;
import java.util.List;
import java.util.ArrayList;
import java.util.Map.Entry;
import java.io.FileNotFoundException;
import java.io.PrintStream;

import jenkins.model.Jenkins;

/**
 * Builds a job, and optionally waits until its completion.
 *
 * @author Kohsuke Kawaguchi
 */
@Extension
public class BuildCommand extends CLICommand {
    @Override
    public String getShortDescription() {
        return Messages.BuildCommand_ShortDescription();
    }

    @Argument(metaVar="JOB",usage="Name of the job to build",required=true)
    public AbstractProject<?,?> job;

    @Option(name="-f", usage="Follow the build progress. Like -s only interrupts are not passed through to the build.")
    public boolean follow = false;

    @Option(name="-s",usage="Wait until the completion/abortion of the command. Interrupts are passed through to the build.")
    public boolean sync = false;

    @Option(name="-w",usage="Wait until the start of the command")
    public boolean wait = false;

    @Option(name="-c",usage="Check for SCM changes before starting the build, and if there's no change, exit without doing a build")
    public boolean checkSCM = false;

    @Option(name="-p",usage="Specify the build parameters in the key=value format.")
    public Map<String,String> parameters = new HashMap<String, String>();

    @Option(name="-v",usage="Prints out the console output of the build. Use with -s")
    public boolean consoleOutput = false;

    @Option(name="-r") @Deprecated
    public int retryCnt = 10;

    protected static final String BUILD_SCHEDULING_REFUSED = "Build scheduling Refused by an extension, hence not in Queue";

    protected int run() throws Exception {
        job.checkPermission(Item.BUILD);

        ParametersAction a = null;
        if (!parameters.isEmpty()) {
            ParametersDefinitionProperty pdp = job.getProperty(ParametersDefinitionProperty.class);
            if (pdp==null)
                throw new AbortException(job.getFullDisplayName()+" is not parameterized but the -p option was specified");

            List<ParameterValue> values = new ArrayList<ParameterValue>();

            for (Entry<String, String> e : parameters.entrySet()) {
                String name = e.getKey();
                ParameterDefinition pd = pdp.getParameterDefinition(name);
                if (pd==null)
                    throw new AbortException(String.format("\'%s\' is not a valid parameter. Did you mean %s?",
                            name, EditDistance.findNearest(name, pdp.getParameterDefinitionNames())));
                values.add(pd.createValue(this,e.getValue()));
            }

            // handle missing parameters by adding as default values ISSUE JENKINS-7162
            for(ParameterDefinition pd :  pdp.getParameterDefinitions()) {
                if (parameters.containsKey(pd.getName()))
                    continue;

                // not passed in use default
                values.add(pd.getDefaultParameterValue());
            }

            a = new ParametersAction(values);
        }

        if (checkSCM) {
            if (job.poll(new StreamTaskListener(stdout, getClientCharset())).change == Change.NONE) {
                return 0;
            }
        }

        if (!job.isBuildable()) {
            String msg = Messages.BuildCommand_CLICause_CannotBuildUnknownReasons(job.getFullDisplayName());
            if (job.isDisabled()) {
                msg = Messages.BuildCommand_CLICause_CannotBuildDisabled(job.getFullDisplayName());
            } else if (job.isHoldOffBuildUntilSave()){
                msg = Messages.BuildCommand_CLICause_CannotBuildConfigNotSaved(job.getFullDisplayName());
            }
            stderr.println(msg);
            return -1;
        }

        QueueTaskFuture<? extends AbstractBuild> f = job.scheduleBuild2(0, new CLICause(Jenkins.getAuthentication().getName()), a);
        
        if (wait || sync || follow) {
            if (f == null) {
                stderr.println(BUILD_SCHEDULING_REFUSED);
                return -1;
            }
            AbstractBuild b = f.waitForStart();    // wait for the start
            stdout.println("Started "+b.getFullDisplayName());

            if (sync || follow) {
                try {
                    if (consoleOutput) {
                        // read output in a retry loop, by default try only once
                        // writeWholeLogTo may fail with FileNotFound
                        // exception on a slow/busy machine, if it takes
                        // longish to create the log file
                        int retryInterval = 100;
                        for (int i=0;i<=retryCnt;) {
                            try {
                                b.writeWholeLogTo(stdout);
                                break;
                            }
                            catch (FileNotFoundException e) {
                                if ( i == retryCnt ) {
                                    throw e;
                                }
                                i++;
                                Thread.sleep(retryInterval);
                            }
                        }
                    }
                    f.get();    // wait for the completion
                    stdout.println("Completed "+b.getFullDisplayName()+" : "+b.getResult());
                    return b.getResult().ordinal;
                } catch (InterruptedException e) {
                    if (follow) {
                        return 125;
                    } else {
                        // if the CLI is aborted, try to abort the build as well
                        f.cancel(true);
                        throw e;
                    }
                }
            }
        }

        return 0;
    }

    @Override
    protected void printUsageSummary(PrintStream stderr) {
        stderr.println(
            "Starts a build, and optionally waits for a completion.\n" +
            "Aside from general scripting use, this command can be\n" +
            "used to invoke another job from within a build of one job.\n" +
            "With the -s option, this command changes the exit code based on\n" +
            "the outcome of the build (exit code 0 indicates a success)\n" +
            "and interrupting the command will interrupt the job.\n" +
            "With the -f option, this command changes the exit code based on\n" +
            "the outcome of the build (exit code 0 indicates a success)\n" +
            "however, unlike -s, interrupting the command will not interrupt\n" +
            "the job (exit code 125 indicates the command was interrupted)\n" +
            "With the -c option, a build will only run if there has been\n" +
            "an SCM change"
        );
    }

    public static class CLICause extends UserIdCause {

    	private String startedBy;

    	public CLICause(){
    		startedBy = "unknown";
    	}

    	public CLICause(String startedBy){
    		this.startedBy = startedBy;
    	}

        @Override
        public String getShortDescription() {
            return Messages.BuildCommand_CLICause_ShortDescription(startedBy);
        }

        @Override
        public void print(TaskListener listener) {
            listener.getLogger().println(Messages.BuildCommand_CLICause_ShortDescription(
                    ModelHyperlinkNote.encodeTo("/user/" + startedBy, startedBy)));
        }

        @Override
        public boolean equals(Object o) {
            return o instanceof CLICause;
        }

        @Override
        public int hashCode() {
            return 7;
        }
    }
}