Gradle.java

package hudson.plugins.gradle;

import hudson.*;
import hudson.model.*;
import hudson.tasks.BuildStepDescriptor;
import hudson.tasks.Builder;
import hudson.tools.ToolInstallation;
import hudson.util.ArgumentListBuilder;
import net.sf.json.JSONObject;
import org.jenkinsci.lib.dryrun.DryRun;
import org.kohsuke.stapler.DataBoundConstructor;
import org.kohsuke.stapler.StaplerRequest;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;


/**
 * @author Gregory Boissinot
 */
public class Gradle extends Builder implements DryRun {

    private final String description;
    private final String switches;
    private final String tasks;
    private final String rootBuildScriptDir;
    private final String buildFile;
    private final String gradleName;
    private final boolean useWrapper;

    @DataBoundConstructor
    public Gradle(String description, String switches, String tasks, String rootBuildScriptDir, String buildFile,
                  String gradleName, boolean useWrapper) {
        this.description = description;
        this.switches = switches;
        this.tasks = tasks;
        this.gradleName = gradleName;
        this.rootBuildScriptDir = rootBuildScriptDir;
        this.buildFile = buildFile;
        this.useWrapper = !useWrapper;
    }


    @SuppressWarnings("unused")
    public String getSwitches() {
        return switches;
    }

    @SuppressWarnings("unused")
    public String getBuildFile() {
        return buildFile;
    }

    @SuppressWarnings("unused")
    public String getGradleName() {
        return gradleName;
    }

    @SuppressWarnings("unused")
    public String getTasks() {
        return tasks;
    }

    @SuppressWarnings("unused")
    public String getDescription() {
        return description;
    }

    @SuppressWarnings("unused")
    public boolean isUseWrapper() {
        return useWrapper;
    }

    @SuppressWarnings("unused")
    public String getRootBuildScriptDir() {
        return rootBuildScriptDir;
    }

    public GradleInstallation getGradle() {
        for (GradleInstallation i : getDescriptor().getInstallations()) {
            if (gradleName != null && i.getName().equals(gradleName)) {
                return i;
            }
        }
        return null;
    }

    @Override
    public boolean performDryRun(AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener) throws InterruptedException, IOException {
        return performTask(true, build, launcher, listener);
    }

    @Override
    public boolean perform(AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener)
            throws InterruptedException, IOException {
        return performTask(false, build, launcher, listener);
    }

    private boolean performTask(boolean dryRun, AbstractBuild<?, ?> build, Launcher launcher, BuildListener listener)
            throws InterruptedException, IOException {

        EnvVars env = build.getEnvironment(listener);

        //Switches
        String extraSwitches = env.get("GRADLE_EXT_SWITCHES");
        String normalizedSwitches;
        if (extraSwitches != null) {
            normalizedSwitches = switches + " " + extraSwitches;
        } else {
            normalizedSwitches = switches;
        }
        normalizedSwitches = normalizedSwitches.replaceAll("[\t\r\n]+", " ");
        normalizedSwitches = Util.replaceMacro(normalizedSwitches, env);
        normalizedSwitches = Util.replaceMacro(normalizedSwitches, build.getBuildVariables());

        //Add dry-run switch if needed
        if (dryRun) {
            normalizedSwitches = normalizedSwitches + " --dry-run";
        }

        //Tasks
        String extraTasks = env.get("GRADLE_EXT_TASKS");
        String normalizedTasks;
        if (extraTasks != null) {
            normalizedTasks = tasks + " " + extraTasks;
        } else {
            normalizedTasks = tasks;
        }
        normalizedTasks = normalizedTasks.replaceAll("[\t\r\n]+", " ");
        normalizedTasks = Util.replaceMacro(normalizedTasks, env);
        normalizedTasks = Util.replaceMacro(normalizedTasks, build.getBuildVariables());

        //Build arguments
        ArgumentListBuilder args = new ArgumentListBuilder();
        GradleInstallation ai = getGradle();
        if (ai == null) {
            if (useWrapper) {
                String execName = (Functions.isWindows()) ? GradleInstallation.WINDOWS_GRADLE_WRAPPER_COMMAND : GradleInstallation.UNIX_GRADLE_WRAPPER_COMMAND;
                FilePath gradleWrapperFile = new FilePath(build.getModuleRoot(), execName);
                args.add(gradleWrapperFile.getRemote());
            } else {
                args.add(launcher.isUnix() ? GradleInstallation.UNIX_GRADLE_COMMAND : GradleInstallation.WINDOWS_GRADLE_COMMAND);
            }
        } else {
            ai = ai.forNode(Computer.currentComputer().getNode(), listener);
            ai = ai.forEnvironment(env);
            String exe;
            if (useWrapper) {
                exe = ai.getWrapperExecutable(launcher, build);
            } else {
                exe = ai.getExecutable(launcher);
            }
            if (exe == null) {
                listener.fatalError("ERROR");
                return false;
            }
            args.add(exe);
        }
        args.addKeyValuePairs("-D", fixParameters(build.getBuildVariables()));
        args.addTokenized(normalizedSwitches);
        args.addTokenized(normalizedTasks);
        if (buildFile != null && buildFile.trim().length() != 0) {
            String buildFileNormalized = Util.replaceMacro(buildFile.trim(), env);
            args.add("-b");
            args.add(buildFileNormalized);
        }
        if (ai != null) {
            env.put("GRADLE_HOME", ai.getHome());
        }

        if (!launcher.isUnix()) {
            // on Windows, executing batch file can't return the correct error code,
            // so we need to wrap it into cmd.exe.
            // double %% is needed because we want ERRORLEVEL to be expanded after
            // batch file executed, not before. This alone shows how broken Windows is...
            args.prepend("cmd.exe", "/C");
            args.add("&&", "exit", "%%ERRORLEVEL%%");
        }

        FilePath rootLauncher;
        if (rootBuildScriptDir != null && rootBuildScriptDir.trim().length() != 0) {
            String rootBuildScriptNormalized = rootBuildScriptDir.trim().replaceAll("[\t\r\n]+", " ");
            rootBuildScriptNormalized = Util.replaceMacro(rootBuildScriptNormalized.trim(), env);
            rootBuildScriptNormalized = Util.replaceMacro(rootBuildScriptNormalized, build.getBuildVariableResolver());
            rootLauncher = new FilePath(build.getModuleRoot(), rootBuildScriptNormalized);
        } else {
            rootLauncher = build.getWorkspace();
        }

        //Not call from an Executor
        if (rootLauncher == null) {
            rootLauncher = build.getProject().getSomeWorkspace();
        }

        try {
            GradleConsoleAnnotator gca = new GradleConsoleAnnotator(
                    listener.getLogger(), build.getCharset());
            int r;
            try {
                r = launcher.launch().cmds(args).envs(env).stdout(gca)
                        .pwd(rootLauncher).join();
            } finally {
                gca.forceEol();
            }
            boolean success = r == 0;
            // if the build is successful then set it as success otherwise as a failure.
            build.setResult(Result.SUCCESS);
            if (!success) {
                build.setResult(Result.FAILURE);
            }
            return success;
        } catch (IOException e) {
            Util.displayIOException(e, listener);
            e.printStackTrace(listener.fatalError("command execution failed"));
            build.setResult(Result.FAILURE);
            return false;
        }
    }

    private Map<String, String> fixParameters(Map<String, String> parmas) {
        Map<String, String> result = new HashMap<String, String>();
        for (Map.Entry<String, String> entry : parmas.entrySet()) {
            String value = entry.getValue();
            if (isValue2Escape(value)) {
                result.put(entry.getKey(), "\"" + value + "\"");
            } else {
                result.put(entry.getKey(), value);
            }
        }
        return result;
    }

    private boolean isValue2Escape(String value) {
        if (value == null) {
            return false;
        }
        if (value.trim().length() == 0) {
            return false;
        }
        return value.contains("<") || value.contains(">");
    }

    @Override
    public DescriptorImpl getDescriptor() {
        return (DescriptorImpl) super.getDescriptor();
    }

    @Extension
    public static final class DescriptorImpl extends BuildStepDescriptor<Builder> {

        @CopyOnWrite
        private volatile GradleInstallation[] installations = new GradleInstallation[0];

        public DescriptorImpl() {
            load();
        }

        protected DescriptorImpl(Class<? extends Gradle> clazz) {
            super(clazz);
        }

        /**
         * Obtains the {@link GradleInstallation.DescriptorImpl} instance.
         */
        public GradleInstallation.DescriptorImpl getToolDescriptor() {
            return ToolInstallation.all().get(GradleInstallation.DescriptorImpl.class);
        }

        @Override
        public boolean isApplicable(Class<? extends AbstractProject> jobType) {
            return true;
        }

        protected void convert(Map<String, Object> oldPropertyBag) {
            if (oldPropertyBag.containsKey("installations")) {
                installations = (GradleInstallation[]) oldPropertyBag.get("installations");
            }
        }

        @Override
        public String getHelpFile() {
            return "/plugin/gradle/help.html";
        }

        @Override
        public String getDisplayName() {
            return Messages.step_displayName();
        }

        public GradleInstallation[] getInstallations() {
            return installations;
        }

        public void setInstallations(GradleInstallation... installations) {
            this.installations = installations;
            save();
        }

        @Override
        public Gradle newInstance(StaplerRequest request, JSONObject formData) throws FormException {
            return (Gradle) request.bindJSON(clazz, formData);
        }
    }

}