Examples of hudson.EnvVars

hudson.EnvVars
Environment variables.
While all the platforms I tested (Linux 2.6, Solaris, and Windows XP) have the case sensitive environment variable table, Windows batch script handles environment variable in the case preserving but case insensitive way (that is, cmd.exe can get both FOO and foo as environment variables when it's launched, and the "set" command will display it accordingly, but "echo %foo%" results in echoing the value of "FOO", not "foo" — this is presumably caused by the behavior of the underlying Win32 API GetEnvironmentVariable acting in case insensitive way.) Windows users are also used to write environment variable case-insensitively (like %Path% vs %PATH%), and you can see many documents on the web that claims Windows environment variables are case insensitive.
So for a consistent cross platform behavior, it creates the least confusion to make the table case insensitive but case preserving.
In Jenkins, often we need to build up "environment variable overrides" on master, then to execute the process on slaves. This causes a problem when working with variables like PATH. So to make this work, we introduce a special convention PATH+FOO — all entries that starts with PATH+ are merged and prepended to the inherited PATH variable, on the process where a new process is executed. @author Kohsuke Kawaguchi

            }


            public synchronized EnvVars getEnvironmentVariables() {
                if(envVars !=null)
                    return envVars;
                envVars = new EnvVars();
                try {
                    byte[] environ = FileUtils.readFileToByteArray(getFile("environ"));
                    int pos=0;
                    for (int i = 0; i < environ.length; i++) {
                        byte b = environ[i];

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        return String.format("[%1$tD %1$tT]", new Date());
    }


    @Override
    public void launch(SlaveComputer computer, final TaskListener listener) {
        EnvVars _cookie = null;
        Process _proc = null;
        try {
            listener.getLogger().println(hudson.model.Messages.Slave_Launching(getTimestamp()));
            if(getCommand().trim().length()==0) {
                listener.getLogger().println(Messages.CommandLauncher_NoLaunchCommand());
                return;
            }
            listener.getLogger().println("$ " + getCommand());


            ProcessBuilder pb = new ProcessBuilder(Util.tokenize(getCommand()));
            final EnvVars cookie = _cookie = EnvVars.createCookie();
            pb.environment().putAll(cookie);
            pb.environment().put("WORKSPACE", computer.getNode().getRemoteFS()); //path for local slave log


            {// system defined variables
                String rootUrl = Jenkins.getInstance().getRootUrl();

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                return false;
            }


            int r;
            try {
                EnvVars envVars = build.getEnvironment(listener);
                // on Windows environment variables are converted to all upper case,
                // but no such conversions are done on Unix, so to make this cross-platform,
                // convert variables to all upper cases.
                for(Map.Entry<String,String> e : build.getBuildVariables().entrySet())
                    envVars.put(e.getKey(),e.getValue());


                r = launcher.launch().cmds(buildCommandLine(script)).envs(envVars).stdout(listener).pwd(ws).join();
            } catch (IOException e) {
                Util.displayIOException(e,listener);
                e.printStackTrace(listener.fatalError(Messages.CommandInterpreter_CommandFailed()));

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            }


            public synchronized EnvVars getEnvironmentVariables() {
                if(envVars !=null)
                    return envVars;
                envVars = new EnvVars();


                try {
                    RandomAccessFile as = new RandomAccessFile(getFile("as"),"r");
                    if(LOGGER.isLoggable(FINER))
                        LOGGER.finer("Reading "+getFile("as"));

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    @Override
    public boolean perform(AbstractBuild<?,?> build, Launcher launcher, BuildListener listener) throws IOException, InterruptedException {
        if(debug)
            listener.getLogger().println("Running mailer");
        // substitute build parameters
        EnvVars env = build.getEnvironment(listener);
        String recip = env.expand(recipients);


        return new MailSender(recip, dontNotifyEveryUnstableBuild, sendToIndividuals, descriptor().getCharset()) {
            /** Check whether a path (/-separated) will be archived. */
            @Override
            public boolean artifactMatches(String path, AbstractBuild<?,?> build) {

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            private void parse() {
                try {
// allocate them first, so that the parse error wil result in empty data
                    // and avoid retry.
                    arguments = new ArrayList<String>();
                    envVars = new EnvVars();


                    IntByReference _ = new IntByReference();


                    IntByReference argmaxRef = new IntByReference(0);
                    IntByReference size = new IntByReference(sizeOfInt);

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        try {
            listener.getLogger().println(Messages.Fingerprinter_Recording());


            Map<String,String> record = new HashMap<String,String>();
            
            EnvVars environment = build.getEnvironment(listener);
            if(targets.length()!=0) {
                String expandedTargets = environment.expand(targets);
                record(build, listener, record, expandedTargets);
            }


            if(recordBuildArtifacts) {
                ArtifactArchiver aa = build.getProject().getPublishersList().get(ArtifactArchiver.class);
                if(aa==null) {
                    // configuration error
                    listener.error(Messages.Fingerprinter_NoArchiving());
                    build.setResult(Result.FAILURE);
                    return true;
                }
                String expandedArtifacts = environment.expand(aa.getArtifacts());
                record(build, listener, record, expandedArtifacts);
            }


            build.getActions().add(new FingerprintAction(build,record));

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    @SuppressWarnings("rawtypes")
    private void assertGetEnvironmentWorks(Run build) throws IOException, InterruptedException {
        whenJenkinsMasterHasNoExecutors();
        // and getEnvironment is called outside of build
        EnvVars envVars =  build.getEnvironment(StreamTaskListener.fromStdout());
        // then it should still succeed - i.e. no NPE o.s.l.t.
        assertNotNull(envVars);
    }

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     * <p>
     * See {@link MavenModuleSetBuild#getEnvironment(TaskListener)}  for discussion.
     */
    @Override
    public EnvVars getEnvironment(TaskListener log) throws IOException, InterruptedException {
        EnvVars envs = super.getEnvironment(log);


        // We need to add M2_HOME and the mvn binary to the PATH so if Maven
        // needs to run Maven it will pick the correct one.
        // This can happen if maven calls ANT which itself calls Maven
        // or if Maven calls itself e.g. maven-release-plugin

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        DbBackedBuild dynamicBuild = mock(DbBackedBuild.class, CALLS_REAL_METHODS);
        BuildCause buildCause = mock(BuildCause.class);
        when(buildCause.getEnvVars()).thenReturn(ImmutableMap.of("ENV1", "env1"));


        doReturn(buildCause).when(dynamicBuild).getCause();
        doReturn(new EnvVars("BRANCH", "master")).when(dynamicBuild).getJenkinsEnvVariables(null);
        assertNotNull(dynamicBuild.getEnvironment(null));
        assertEquals("master", dynamicBuild.getEnvironment(null).get("DOTCI_BRANCH"));
        assertEquals("env1", dynamicBuild.getEnvironment(null).get("ENV1"));
        assertEquals("true", dynamicBuild.getEnvironment(null).get("DOTCI"));
        assertEquals("true", dynamicBuild.getEnvironment(null).get("CI"));

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